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nikosdouvlis merged 6 commits into from
Mar 19, 2026
Merged

feat(clerk-js): Send previous session token on /tokens requests #8105

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cbc83a0
feat(clerk-js): Send previous session token on /tokens requests
nikosdouvlis Mar 18, 2026
388086f
test(clerk-js): Add tests for sending previous token in /tokens body
nikosdouvlis Mar 18, 2026
66d9de6
feat(clerk-js): Gate previous token in /tokens body behind session_mi…
nikosdouvlis Mar 19, 2026
2b6ae78
refactor(clerk-js): Move session_minter flag from Environment to Auth…
nikosdouvlis Mar 19, 2026
469fb9f
fix(clerk-js): Add sessionMinter to test mock so feature gate passes
nikosdouvlis Mar 19, 2026
ecdb80a
fix(clerk-js): Update AuthConfig snapshot test and bump bundlewatch l…
nikosdouvlis Mar 19, 2026
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5 changes: 5 additions & 0 deletions .changeset/session-minter-send-token.md
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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
---
'@clerk/clerk-js': patch
---

Send previous session token on `/tokens` requests to support Session Minter edge token minting.
41 changes: 41 additions & 0 deletions integration/tests/resiliency.test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -518,4 +518,45 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withEmailCodes] })('resilienc
await u.po.clerk.toBeLoaded();
});
});

test.describe('token refresh with previous token in body', () => {
test('token refresh includes previous token in POST body and succeeds', async ({ page, context }) => {
const u = createTestUtils({ app, page, context });

// Sign in
await u.po.signIn.goTo();
await u.po.signIn.signInWithEmailAndInstantPassword({ email: fakeUser.email, password: fakeUser.password });
await u.po.expect.toBeSignedIn();

// Track token request bodies
const tokenRequestBodies: string[] = [];
await context.route('**/v1/client/sessions/*/tokens*', async route => {
const postData = route.request().postData();
if (postData) {
tokenRequestBodies.push(postData);
}
await route.continue();
});

// Force a fresh token fetch (cache miss -> hits /tokens endpoint)
const token = await page.evaluate(async () => {
const clerk = (window as any).Clerk;
await clerk.session?.clearCache();
return await clerk.session?.getToken({ skipCache: true });
});

// Token refresh should succeed (backend ignores the param for now)
expect(token).toBeTruthy();

// Verify token param is present in the POST body (form-urlencoded)
// fapiClient serializes body as form-urlencoded via qs.stringify(camelToSnake(body))
// so "token" stays "token" (no case change) and the body looks like "organization_id=&token=<jwt>"
expect(tokenRequestBodies.length).toBeGreaterThanOrEqual(1);
const lastBody = tokenRequestBodies[tokenRequestBodies.length - 1];
expect(lastBody).toContain('token=');

// User should still be signed in after refresh
await u.po.expect.toBeSignedIn();
});
});
});
2 changes: 1 addition & 1 deletion packages/clerk-js/bundlewatch.config.json
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Open in desktop
Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
{
"files": [
{ "path": "./dist/clerk.js", "maxSize": "540KB" },
{ "path": "./dist/clerk.browser.js", "maxSize": "66KB" },
{ "path": "./dist/clerk.browser.js", "maxSize": "67KB" },
{ "path": "./dist/clerk.legacy.browser.js", "maxSize": "108KB" },
{ "path": "./dist/clerk.no-rhc.js", "maxSize": "307KB" },
{ "path": "./dist/clerk.native.js", "maxSize": "66KB" },
Expand Down
3 changes: 3 additions & 0 deletions packages/clerk-js/src/core/resources/AuthConfig.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -8,6 +8,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
reverification: boolean = false;
singleSessionMode: boolean = false;
preferredChannels: Record<string, PhoneCodeChannel> | null = null;
sessionMinter: boolean = false;

public constructor(data: Partial<AuthConfigJSON> | null = null) {
super();
Expand All@@ -23,6 +24,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
this.reverification = this.withDefault(data.reverification, this.reverification);
this.singleSessionMode = this.withDefault(data.single_session_mode, this.singleSessionMode);
this.preferredChannels = this.withDefault(data.preferred_channels, this.preferredChannels);
this.sessionMinter = this.withDefault(data.session_minter, this.sessionMinter);
return this;
}

Expand All@@ -33,6 +35,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
object: 'auth_config',
reverification: this.reverification,
single_session_mode: this.singleSessionMode,
session_minter: this.sessionMinter,
};
}
}
8 changes: 7 additions & 1 deletion packages/clerk-js/src/core/resources/Session.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -480,7 +480,13 @@ export class Session extends BaseResource implements SessionResource {
): Promise<TokenResource> {
const path = template ? `${this.path()}/tokens/${template}` : `${this.path()}/tokens`;
// TODO: update template endpoint to accept organizationId
const params: Record<string, string | null> = template ? {} : { organizationId: organizationId ?? null };
const sessionMinterEnabled = Session.clerk?.__internal_environment?.authConfig?.sessionMinter;
const params: Record<string, string | null> = template
? {}
: {
organizationId: organizationId ?? null,
...(sessionMinterEnabled && this.lastActiveToken ? { token: this.lastActiveToken.getRawString() } : {}),
};
const lastActiveToken = this.lastActiveToken?.getRawString();

const tokenResolver = Token.create(path, params, skipCache ? { debug: 'skip_cache' } : undefined).catch(e => {
Expand Down
1 change: 1 addition & 0 deletions packages/clerk-js/src/core/resources/__tests__/AuthConfig.test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,6 +46,7 @@ describe('AuthConfig', () => {
id: '',
reverification: true,
single_session_mode: true,
session_minter: false,
});
});
});
124 changes: 124 additions & 0 deletions packages/clerk-js/src/core/resources/__tests__/Session.test.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -1522,6 +1522,130 @@ describe('Session', () => {
});
});

describe('sends previous token in /tokens request body', () => {
let dispatchSpy: ReturnType<typeof vi.spyOn>;
let fetchSpy: ReturnType<typeof vi.spyOn>;

beforeEach(() => {
dispatchSpy = vi.spyOn(eventBus, 'emit');
fetchSpy = vi.spyOn(BaseResource, '_fetch' as any);
BaseResource.clerk = clerkMock({
__internal_environment: {
authConfig: { sessionMinter: true },
},
}) as any;
});

afterEach(() => {
dispatchSpy?.mockRestore();
fetchSpy?.mockRestore();
BaseResource.clerk = null as any;
});

it('includes token in request body when lastActiveToken exists', async () => {
const session = new Session({
status: 'active',
id: 'session_1',
object: 'session',
user: createUser({}),
last_active_organization_id: null,
last_active_token: { object: 'token', jwt: mockJwt },
actor: null,
created_at: new Date().getTime(),
updated_at: new Date().getTime(),
} as SessionJSON);

SessionTokenCache.clear();

fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

await session.getToken();

expect(fetchSpy).toHaveBeenCalledTimes(1);
expect(fetchSpy.mock.calls[0][0]).toMatchObject({
path: '/client/sessions/session_1/tokens',
method: 'POST',
body: { organizationId: null, token: mockJwt },
});
});

it('does not include token key in request body when lastActiveToken is null (first mint)', async () => {
const session = new Session({
status: 'active',
id: 'session_1',
object: 'session',
user: createUser({}),
last_active_organization_id: null,
actor: null,
created_at: new Date().getTime(),
updated_at: new Date().getTime(),
} as unknown as SessionJSON);

SessionTokenCache.clear();

fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

await session.getToken();

expect(fetchSpy).toHaveBeenCalledTimes(1);
expect(fetchSpy.mock.calls[0][0]).toMatchObject({
path: '/client/sessions/session_1/tokens',
method: 'POST',
body: { organizationId: null },
});
expect(fetchSpy.mock.calls[0][0].body).not.toHaveProperty('token');
});

it('does not include token in request body for template token requests', async () => {
const session = new Session({
status: 'active',
id: 'session_1',
object: 'session',
user: createUser({}),
last_active_organization_id: null,
last_active_token: { object: 'token', jwt: mockJwt },
actor: null,
created_at: new Date().getTime(),
updated_at: new Date().getTime(),
} as SessionJSON);

SessionTokenCache.clear();

fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

await session.getToken({ template: 'my-template' });

expect(fetchSpy).toHaveBeenCalledTimes(1);
expect(fetchSpy.mock.calls[0][0]).toMatchObject({
path: '/client/sessions/session_1/tokens/my-template',
method: 'POST',
});
expect(fetchSpy.mock.calls[0][0].body).toEqual({});
});

it('token value matches lastActiveToken.getRawString() exactly', async () => {
const session = new Session({
status: 'active',
id: 'session_1',
object: 'session',
user: createUser({}),
last_active_organization_id: null,
last_active_token: { object: 'token', jwt: mockJwt },
actor: null,
created_at: new Date().getTime(),
updated_at: new Date().getTime(),
} as SessionJSON);

SessionTokenCache.clear();

fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

await session.getToken();

expect(fetchSpy.mock.calls[0][0].body.token).toBe(mockJwt);
});
});

describe('origin outage mode fallback', () => {
let dispatchSpy: ReturnType<typeof vi.spyOn>;
let fetchSpy: ReturnType<typeof vi.spyOn>;
Expand Down
1 change: 1 addition & 0 deletions packages/shared/src/types/authConfig.ts
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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,5 +21,6 @@ export interface AuthConfigResource extends ClerkResource {
* Preferred channels for phone code providers.
*/
preferredChannels: Record<string, PhoneCodeChannel> | null;
sessionMinter: boolean;
__internal_toSnapshot: () => AuthConfigJSONSnapshot;
}
1 change: 1 addition & 0 deletions packages/shared/src/types/json.ts
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Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -332,6 +332,7 @@ export interface AuthConfigJSON extends ClerkResourceJSON {
claimed_at: number | null;
reverification: boolean;
preferred_channels?: Record<string, PhoneCodeChannel>;
session_minter?: boolean;
}

export interface VerificationJSON extends ClerkResourceJSON {
Expand Down
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
feat(clerk-js): Send previous session token on /tokens requests by nikosdouvlis · Pull Request #8105 · clerk/javascript · GitHub
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feat(clerk-js): Send previous session token on /tokens requests#8105

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 Merged

nikosdouvlis
merged 6 commits into

from

Mar 19, 2026
 Merged


feat(clerk-js): Send previous session token on /tokens requests
#8105
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cbc83a0

feat(clerk-js): Send previous session token on /tokens requests


nikosdouvlis Mar 18, 2026
388086f

test(clerk-js): Add tests for sending previous token in /tokens body


nikosdouvlis Mar 18, 2026
66d9de6

feat(clerk-js): Gate previous token in /tokens body behind session_mi…


nikosdouvlis Mar 19, 2026
2b6ae78

refactor(clerk-js): Move session_minter flag from Environment to Auth…


nikosdouvlis Mar 19, 2026
469fb9f

fix(clerk-js): Add sessionMinter to test mock so feature gate passes


nikosdouvlis Mar 19, 2026
ecdb80a

fix(clerk-js): Update AuthConfig snapshot test and bump bundlewatch l…


nikosdouvlis Mar 19, 2026

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5 changes: 5 additions & 0 deletions
.changeset/session-minter-send-token.md

View file


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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
---
'@clerk/clerk-js': patch
---

Send previous session token on `/tokens` requests to support Session Minter edge token minting.

41 changes: 41 additions & 0 deletions
integration/tests/resiliency.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -518,4 +518,45 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withEmailCodes] })('resilienc
 await u.po.clerk.toBeLoaded();
 });
 });

 test.describe('token refresh with previous token in body', () => {
 test('token refresh includes previous token in POST body and succeeds', async ({ page, context }) => {
 const u = createTestUtils({ app, page, context });

 // Sign in
 await u.po.signIn.goTo();
 await u.po.signIn.signInWithEmailAndInstantPassword({ email: fakeUser.email, password: fakeUser.password });
 await u.po.expect.toBeSignedIn();

 // Track token request bodies
 const tokenRequestBodies: string[] = [];
 await context.route('**/v1/client/sessions/*/tokens*', async route => {
 const postData = route.request().postData();
 if (postData) {
 tokenRequestBodies.push(postData);
 }
 await route.continue();
 });

 // Force a fresh token fetch (cache miss -> hits /tokens endpoint)
 const token = await page.evaluate(async () => {
 const clerk = (window as any).Clerk;
 await clerk.session?.clearCache();
 return await clerk.session?.getToken({ skipCache: true });
 });

 // Token refresh should succeed (backend ignores the param for now)
 expect(token).toBeTruthy();

 // Verify token param is present in the POST body (form-urlencoded)
 // fapiClient serializes body as form-urlencoded via qs.stringify(camelToSnake(body))
 // so "token" stays "token" (no case change) and the body looks like "organization_id=&token=<jwt>"
 expect(tokenRequestBodies.length).toBeGreaterThanOrEqual(1);
 const lastBody = tokenRequestBodies[tokenRequestBodies.length - 1];
 expect(lastBody).toContain('token=');

 // User should still be signed in after refresh
 await u.po.expect.toBeSignedIn();
 });
 });
});

2 changes: 1 addition & 1 deletion
packages/clerk-js/bundlewatch.config.json

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
{
 "files": [
 { "path": "./dist/clerk.js", "maxSize": "540KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "66KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "67KB" },
 { "path": "./dist/clerk.legacy.browser.js", "maxSize": "108KB" },
 { "path": "./dist/clerk.no-rhc.js", "maxSize": "307KB" },
 { "path": "./dist/clerk.native.js", "maxSize": "66KB" },
Expand Down

3 changes: 3 additions & 0 deletions
packages/clerk-js/src/core/resources/AuthConfig.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -8,6 +8,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 reverification: boolean = false;
 singleSessionMode: boolean = false;
 preferredChannels: Record<string, PhoneCodeChannel> | null = null;
 sessionMinter: boolean = false;

 public constructor(data: Partial<AuthConfigJSON> | null = null) {
 super();
Expand All@@ -23,6 +24,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 this.reverification = this.withDefault(data.reverification, this.reverification);
 this.singleSessionMode = this.withDefault(data.single_session_mode, this.singleSessionMode);
 this.preferredChannels = this.withDefault(data.preferred_channels, this.preferredChannels);
 this.sessionMinter = this.withDefault(data.session_minter, this.sessionMinter);
 return this;
 }

Expand All@@ -33,6 +35,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 object: 'auth_config',
 reverification: this.reverification,
 single_session_mode: this.singleSessionMode,
 session_minter: this.sessionMinter,
 };
 }
}

8 changes: 7 additions & 1 deletion
packages/clerk-js/src/core/resources/Session.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -480,7 +480,13 @@ export class Session extends BaseResource implements SessionResource {
 ): Promise<TokenResource> {
 const path = template ? `${this.path()}/tokens/${template}` : `${this.path()}/tokens`;
 // TODO: update template endpoint to accept organizationId
 const params: Record<string, string | null> = template ? {} : { organizationId: organizationId ?? null };
 const sessionMinterEnabled = Session.clerk?.__internal_environment?.authConfig?.sessionMinter;
 const params: Record<string, string | null> = template
 ? {}
 : {
 organizationId: organizationId ?? null,
 ...(sessionMinterEnabled && this.lastActiveToken ? { token: this.lastActiveToken.getRawString() } : {}),
 };
 const lastActiveToken = this.lastActiveToken?.getRawString();

 const tokenResolver = Token.create(path, params, skipCache ? { debug: 'skip_cache' } : undefined).catch(e => {
Expand Down

1 change: 1 addition & 0 deletions
packages/clerk-js/src/core/resources/__tests__/AuthConfig.test.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,6 +46,7 @@ describe('AuthConfig', () => {
 id: '',
 reverification: true,
 single_session_mode: true,
 session_minter: false,
 });
 });
});

124 changes: 124 additions & 0 deletions
packages/clerk-js/src/core/resources/__tests__/Session.test.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1522,6 +1522,130 @@ describe('Session', () => {
 });
 });

 describe('sends previous token in /tokens request body', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;

 beforeEach(() => {
 dispatchSpy = vi.spyOn(eventBus, 'emit');
 fetchSpy = vi.spyOn(BaseResource, '_fetch' as any);
 BaseResource.clerk = clerkMock({
 __internal_environment: {
 authConfig: { sessionMinter: true },
 },
 }) as any;
 });

 afterEach(() => {
 dispatchSpy?.mockRestore();
 fetchSpy?.mockRestore();
 BaseResource.clerk = null as any;
 });

 it('includes token in request body when lastActiveToken exists', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null, token: mockJwt },
 });
 });

 it('does not include token key in request body when lastActiveToken is null (first mint)', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as unknown as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null },
 });
 expect(fetchSpy.mock.calls[0][0].body).not.toHaveProperty('token');
 });

 it('does not include token in request body for template token requests', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken({ template: 'my-template' });

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens/my-template',
 method: 'POST',
 });
 expect(fetchSpy.mock.calls[0][0].body).toEqual({});
 });

 it('token value matches lastActiveToken.getRawString() exactly', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy.mock.calls[0][0].body.token).toBe(mockJwt);
 });
 });

 describe('origin outage mode fallback', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;
Expand Down

1 change: 1 addition & 0 deletions
packages/shared/src/types/authConfig.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -21,5 +21,6 @@ export interface AuthConfigResource extends ClerkResource {
 * Preferred channels for phone code providers.
 */
 preferredChannels: Record<string, PhoneCodeChannel> | null;
 sessionMinter: boolean;
 __internal_toSnapshot: () => AuthConfigJSONSnapshot;
}

1 change: 1 addition & 0 deletions
packages/shared/src/types/json.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -332,6 +332,7 @@ export interface AuthConfigJSON extends ClerkResourceJSON {
 claimed_at: number | null;
 reverification: boolean;
 preferred_channels?: Record<string, PhoneCodeChannel>;
 session_minter?: boolean;
}

export interface VerificationJSON extends ClerkResourceJSON {
Expand Down
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var style = document.createElement('style');
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color-scheme: dark light;
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.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
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';
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
feat(clerk-js): Send previous session token on /tokens requests by nikosdouvlis · Pull Request #8105 · clerk/javascript · GitHub
Skip to content
feat(clerk-js): Send previous session token on /tokens requests#8105

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nikosdouvlis
merged 6 commits into

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Mar 19, 2026
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feat(clerk-js): Send previous session token on /tokens requests
#8105
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cbc83a0

feat(clerk-js): Send previous session token on /tokens requests


nikosdouvlis Mar 18, 2026
388086f

test(clerk-js): Add tests for sending previous token in /tokens body


nikosdouvlis Mar 18, 2026
66d9de6

feat(clerk-js): Gate previous token in /tokens body behind session_mi…


nikosdouvlis Mar 19, 2026
2b6ae78

refactor(clerk-js): Move session_minter flag from Environment to Auth…


nikosdouvlis Mar 19, 2026
469fb9f

fix(clerk-js): Add sessionMinter to test mock so feature gate passes


nikosdouvlis Mar 19, 2026
ecdb80a

fix(clerk-js): Update AuthConfig snapshot test and bump bundlewatch l…


nikosdouvlis Mar 19, 2026

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5 changes: 5 additions & 0 deletions
.changeset/session-minter-send-token.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
---
'@clerk/clerk-js': patch
---

Send previous session token on `/tokens` requests to support Session Minter edge token minting.

41 changes: 41 additions & 0 deletions
integration/tests/resiliency.test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -518,4 +518,45 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withEmailCodes] })('resilienc
 await u.po.clerk.toBeLoaded();
 });
 });

 test.describe('token refresh with previous token in body', () => {
 test('token refresh includes previous token in POST body and succeeds', async ({ page, context }) => {
 const u = createTestUtils({ app, page, context });

 // Sign in
 await u.po.signIn.goTo();
 await u.po.signIn.signInWithEmailAndInstantPassword({ email: fakeUser.email, password: fakeUser.password });
 await u.po.expect.toBeSignedIn();

 // Track token request bodies
 const tokenRequestBodies: string[] = [];
 await context.route('**/v1/client/sessions/*/tokens*', async route => {
 const postData = route.request().postData();
 if (postData) {
 tokenRequestBodies.push(postData);
 }
 await route.continue();
 });

 // Force a fresh token fetch (cache miss -> hits /tokens endpoint)
 const token = await page.evaluate(async () => {
 const clerk = (window as any).Clerk;
 await clerk.session?.clearCache();
 return await clerk.session?.getToken({ skipCache: true });
 });

 // Token refresh should succeed (backend ignores the param for now)
 expect(token).toBeTruthy();

 // Verify token param is present in the POST body (form-urlencoded)
 // fapiClient serializes body as form-urlencoded via qs.stringify(camelToSnake(body))
 // so "token" stays "token" (no case change) and the body looks like "organization_id=&token=<jwt>"
 expect(tokenRequestBodies.length).toBeGreaterThanOrEqual(1);
 const lastBody = tokenRequestBodies[tokenRequestBodies.length - 1];
 expect(lastBody).toContain('token=');

 // User should still be signed in after refresh
 await u.po.expect.toBeSignedIn();
 });
 });
});

2 changes: 1 addition & 1 deletion
packages/clerk-js/bundlewatch.config.json

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
{
 "files": [
 { "path": "./dist/clerk.js", "maxSize": "540KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "66KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "67KB" },
 { "path": "./dist/clerk.legacy.browser.js", "maxSize": "108KB" },
 { "path": "./dist/clerk.no-rhc.js", "maxSize": "307KB" },
 { "path": "./dist/clerk.native.js", "maxSize": "66KB" },
Expand Down

3 changes: 3 additions & 0 deletions
packages/clerk-js/src/core/resources/AuthConfig.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -8,6 +8,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 reverification: boolean = false;
 singleSessionMode: boolean = false;
 preferredChannels: Record<string, PhoneCodeChannel> | null = null;
 sessionMinter: boolean = false;

 public constructor(data: Partial<AuthConfigJSON> | null = null) {
 super();
Expand All@@ -23,6 +24,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 this.reverification = this.withDefault(data.reverification, this.reverification);
 this.singleSessionMode = this.withDefault(data.single_session_mode, this.singleSessionMode);
 this.preferredChannels = this.withDefault(data.preferred_channels, this.preferredChannels);
 this.sessionMinter = this.withDefault(data.session_minter, this.sessionMinter);
 return this;
 }

Expand All@@ -33,6 +35,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 object: 'auth_config',
 reverification: this.reverification,
 single_session_mode: this.singleSessionMode,
 session_minter: this.sessionMinter,
 };
 }
}

8 changes: 7 additions & 1 deletion
packages/clerk-js/src/core/resources/Session.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -480,7 +480,13 @@ export class Session extends BaseResource implements SessionResource {
 ): Promise<TokenResource> {
 const path = template ? `${this.path()}/tokens/${template}` : `${this.path()}/tokens`;
 // TODO: update template endpoint to accept organizationId
 const params: Record<string, string | null> = template ? {} : { organizationId: organizationId ?? null };
 const sessionMinterEnabled = Session.clerk?.__internal_environment?.authConfig?.sessionMinter;
 const params: Record<string, string | null> = template
 ? {}
 : {
 organizationId: organizationId ?? null,
 ...(sessionMinterEnabled && this.lastActiveToken ? { token: this.lastActiveToken.getRawString() } : {}),
 };
 const lastActiveToken = this.lastActiveToken?.getRawString();

 const tokenResolver = Token.create(path, params, skipCache ? { debug: 'skip_cache' } : undefined).catch(e => {
Expand Down

1 change: 1 addition & 0 deletions
packages/clerk-js/src/core/resources/__tests__/AuthConfig.test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,6 +46,7 @@ describe('AuthConfig', () => {
 id: '',
 reverification: true,
 single_session_mode: true,
 session_minter: false,
 });
 });
});

124 changes: 124 additions & 0 deletions
packages/clerk-js/src/core/resources/__tests__/Session.test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -1522,6 +1522,130 @@ describe('Session', () => {
 });
 });

 describe('sends previous token in /tokens request body', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;

 beforeEach(() => {
 dispatchSpy = vi.spyOn(eventBus, 'emit');
 fetchSpy = vi.spyOn(BaseResource, '_fetch' as any);
 BaseResource.clerk = clerkMock({
 __internal_environment: {
 authConfig: { sessionMinter: true },
 },
 }) as any;
 });

 afterEach(() => {
 dispatchSpy?.mockRestore();
 fetchSpy?.mockRestore();
 BaseResource.clerk = null as any;
 });

 it('includes token in request body when lastActiveToken exists', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null, token: mockJwt },
 });
 });

 it('does not include token key in request body when lastActiveToken is null (first mint)', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as unknown as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null },
 });
 expect(fetchSpy.mock.calls[0][0].body).not.toHaveProperty('token');
 });

 it('does not include token in request body for template token requests', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken({ template: 'my-template' });

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens/my-template',
 method: 'POST',
 });
 expect(fetchSpy.mock.calls[0][0].body).toEqual({});
 });

 it('token value matches lastActiveToken.getRawString() exactly', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy.mock.calls[0][0].body.token).toBe(mockJwt);
 });
 });

 describe('origin outage mode fallback', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;
Expand Down

1 change: 1 addition & 0 deletions
packages/shared/src/types/authConfig.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,5 +21,6 @@ export interface AuthConfigResource extends ClerkResource {
 * Preferred channels for phone code providers.
 */
 preferredChannels: Record<string, PhoneCodeChannel> | null;
 sessionMinter: boolean;
 __internal_toSnapshot: () => AuthConfigJSONSnapshot;
}

1 change: 1 addition & 0 deletions
packages/shared/src/types/json.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -332,6 +332,7 @@ export interface AuthConfigJSON extends ClerkResourceJSON {
 claimed_at: number | null;
 reverification: boolean;
 preferred_channels?: Record<string, PhoneCodeChannel>;
 session_minter?: boolean;
}

export interface VerificationJSON extends ClerkResourceJSON {
Expand Down
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
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if (node.nodeType === 3) { // text node
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var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
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found = true;
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parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
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highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
feat(clerk-js): Send previous session token on /tokens requests by nikosdouvlis · Pull Request #8105 · clerk/javascript · GitHub
Skip to content
feat(clerk-js): Send previous session token on /tokens requests#8105

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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Sign in
to your account

 Merged

nikosdouvlis
merged 6 commits into

from

Mar 19, 2026
 Merged


feat(clerk-js): Send previous session token on /tokens requests
#8105
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cbc83a0

feat(clerk-js): Send previous session token on /tokens requests


nikosdouvlis Mar 18, 2026
388086f

test(clerk-js): Add tests for sending previous token in /tokens body


nikosdouvlis Mar 18, 2026
66d9de6

feat(clerk-js): Gate previous token in /tokens body behind session_mi…


nikosdouvlis Mar 19, 2026
2b6ae78

refactor(clerk-js): Move session_minter flag from Environment to Auth…


nikosdouvlis Mar 19, 2026
469fb9f

fix(clerk-js): Add sessionMinter to test mock so feature gate passes


nikosdouvlis Mar 19, 2026
ecdb80a

fix(clerk-js): Update AuthConfig snapshot test and bump bundlewatch l…


nikosdouvlis Mar 19, 2026

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5 changes: 5 additions & 0 deletions
.changeset/session-minter-send-token.md

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Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
---
'@clerk/clerk-js': patch
---

Send previous session token on `/tokens` requests to support Session Minter edge token minting.

41 changes: 41 additions & 0 deletions
integration/tests/resiliency.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -518,4 +518,45 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withEmailCodes] })('resilienc
 await u.po.clerk.toBeLoaded();
 });
 });

 test.describe('token refresh with previous token in body', () => {
 test('token refresh includes previous token in POST body and succeeds', async ({ page, context }) => {
 const u = createTestUtils({ app, page, context });

 // Sign in
 await u.po.signIn.goTo();
 await u.po.signIn.signInWithEmailAndInstantPassword({ email: fakeUser.email, password: fakeUser.password });
 await u.po.expect.toBeSignedIn();

 // Track token request bodies
 const tokenRequestBodies: string[] = [];
 await context.route('**/v1/client/sessions/*/tokens*', async route => {
 const postData = route.request().postData();
 if (postData) {
 tokenRequestBodies.push(postData);
 }
 await route.continue();
 });

 // Force a fresh token fetch (cache miss -> hits /tokens endpoint)
 const token = await page.evaluate(async () => {
 const clerk = (window as any).Clerk;
 await clerk.session?.clearCache();
 return await clerk.session?.getToken({ skipCache: true });
 });

 // Token refresh should succeed (backend ignores the param for now)
 expect(token).toBeTruthy();

 // Verify token param is present in the POST body (form-urlencoded)
 // fapiClient serializes body as form-urlencoded via qs.stringify(camelToSnake(body))
 // so "token" stays "token" (no case change) and the body looks like "organization_id=&token=<jwt>"
 expect(tokenRequestBodies.length).toBeGreaterThanOrEqual(1);
 const lastBody = tokenRequestBodies[tokenRequestBodies.length - 1];
 expect(lastBody).toContain('token=');

 // User should still be signed in after refresh
 await u.po.expect.toBeSignedIn();
 });
 });
});

2 changes: 1 addition & 1 deletion
packages/clerk-js/bundlewatch.config.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
{
 "files": [
 { "path": "./dist/clerk.js", "maxSize": "540KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "66KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "67KB" },
 { "path": "./dist/clerk.legacy.browser.js", "maxSize": "108KB" },
 { "path": "./dist/clerk.no-rhc.js", "maxSize": "307KB" },
 { "path": "./dist/clerk.native.js", "maxSize": "66KB" },
Expand Down

3 changes: 3 additions & 0 deletions
packages/clerk-js/src/core/resources/AuthConfig.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -8,6 +8,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 reverification: boolean = false;
 singleSessionMode: boolean = false;
 preferredChannels: Record<string, PhoneCodeChannel> | null = null;
 sessionMinter: boolean = false;

 public constructor(data: Partial<AuthConfigJSON> | null = null) {
 super();
Expand All@@ -23,6 +24,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 this.reverification = this.withDefault(data.reverification, this.reverification);
 this.singleSessionMode = this.withDefault(data.single_session_mode, this.singleSessionMode);
 this.preferredChannels = this.withDefault(data.preferred_channels, this.preferredChannels);
 this.sessionMinter = this.withDefault(data.session_minter, this.sessionMinter);
 return this;
 }

Expand All@@ -33,6 +35,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 object: 'auth_config',
 reverification: this.reverification,
 single_session_mode: this.singleSessionMode,
 session_minter: this.sessionMinter,
 };
 }
}

8 changes: 7 additions & 1 deletion
packages/clerk-js/src/core/resources/Session.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -480,7 +480,13 @@ export class Session extends BaseResource implements SessionResource {
 ): Promise<TokenResource> {
 const path = template ? `${this.path()}/tokens/${template}` : `${this.path()}/tokens`;
 // TODO: update template endpoint to accept organizationId
 const params: Record<string, string | null> = template ? {} : { organizationId: organizationId ?? null };
 const sessionMinterEnabled = Session.clerk?.__internal_environment?.authConfig?.sessionMinter;
 const params: Record<string, string | null> = template
 ? {}
 : {
 organizationId: organizationId ?? null,
 ...(sessionMinterEnabled && this.lastActiveToken ? { token: this.lastActiveToken.getRawString() } : {}),
 };
 const lastActiveToken = this.lastActiveToken?.getRawString();

 const tokenResolver = Token.create(path, params, skipCache ? { debug: 'skip_cache' } : undefined).catch(e => {
Expand Down

1 change: 1 addition & 0 deletions
packages/clerk-js/src/core/resources/__tests__/AuthConfig.test.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,6 +46,7 @@ describe('AuthConfig', () => {
 id: '',
 reverification: true,
 single_session_mode: true,
 session_minter: false,
 });
 });
});

124 changes: 124 additions & 0 deletions
packages/clerk-js/src/core/resources/__tests__/Session.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1522,6 +1522,130 @@ describe('Session', () => {
 });
 });

 describe('sends previous token in /tokens request body', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;

 beforeEach(() => {
 dispatchSpy = vi.spyOn(eventBus, 'emit');
 fetchSpy = vi.spyOn(BaseResource, '_fetch' as any);
 BaseResource.clerk = clerkMock({
 __internal_environment: {
 authConfig: { sessionMinter: true },
 },
 }) as any;
 });

 afterEach(() => {
 dispatchSpy?.mockRestore();
 fetchSpy?.mockRestore();
 BaseResource.clerk = null as any;
 });

 it('includes token in request body when lastActiveToken exists', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null, token: mockJwt },
 });
 });

 it('does not include token key in request body when lastActiveToken is null (first mint)', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as unknown as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null },
 });
 expect(fetchSpy.mock.calls[0][0].body).not.toHaveProperty('token');
 });

 it('does not include token in request body for template token requests', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken({ template: 'my-template' });

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens/my-template',
 method: 'POST',
 });
 expect(fetchSpy.mock.calls[0][0].body).toEqual({});
 });

 it('token value matches lastActiveToken.getRawString() exactly', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy.mock.calls[0][0].body.token).toBe(mockJwt);
 });
 });

 describe('origin outage mode fallback', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;
Expand Down

1 change: 1 addition & 0 deletions
packages/shared/src/types/authConfig.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,5 +21,6 @@ export interface AuthConfigResource extends ClerkResource {
 * Preferred channels for phone code providers.
 */
 preferredChannels: Record<string, PhoneCodeChannel> | null;
 sessionMinter: boolean;
 __internal_toSnapshot: () => AuthConfigJSONSnapshot;
}

1 change: 1 addition & 0 deletions
packages/shared/src/types/json.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -332,6 +332,7 @@ export interface AuthConfigJSON extends ClerkResourceJSON {
 claimed_at: number | null;
 reverification: boolean;
 preferred_channels?: Record<string, PhoneCodeChannel>;
 session_minter?: boolean;
}

export interface VerificationJSON extends ClerkResourceJSON {
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
feat(clerk-js): Send previous session token on /tokens requests by nikosdouvlis · Pull Request #8105 · clerk/javascript · GitHub
Skip to content
feat(clerk-js): Send previous session token on /tokens requests#8105

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 Merged

nikosdouvlis
merged 6 commits into

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Mar 19, 2026
 Merged


feat(clerk-js): Send previous session token on /tokens requests
#8105
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cbc83a0

feat(clerk-js): Send previous session token on /tokens requests


nikosdouvlis Mar 18, 2026
388086f

test(clerk-js): Add tests for sending previous token in /tokens body


nikosdouvlis Mar 18, 2026
66d9de6

feat(clerk-js): Gate previous token in /tokens body behind session_mi…


nikosdouvlis Mar 19, 2026
2b6ae78

refactor(clerk-js): Move session_minter flag from Environment to Auth…


nikosdouvlis Mar 19, 2026
469fb9f

fix(clerk-js): Add sessionMinter to test mock so feature gate passes


nikosdouvlis Mar 19, 2026
ecdb80a

fix(clerk-js): Update AuthConfig snapshot test and bump bundlewatch l…


nikosdouvlis Mar 19, 2026

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5 changes: 5 additions & 0 deletions
.changeset/session-minter-send-token.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
---
'@clerk/clerk-js': patch
---

Send previous session token on `/tokens` requests to support Session Minter edge token minting.

41 changes: 41 additions & 0 deletions
integration/tests/resiliency.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -518,4 +518,45 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withEmailCodes] })('resilienc
 await u.po.clerk.toBeLoaded();
 });
 });

 test.describe('token refresh with previous token in body', () => {
 test('token refresh includes previous token in POST body and succeeds', async ({ page, context }) => {
 const u = createTestUtils({ app, page, context });

 // Sign in
 await u.po.signIn.goTo();
 await u.po.signIn.signInWithEmailAndInstantPassword({ email: fakeUser.email, password: fakeUser.password });
 await u.po.expect.toBeSignedIn();

 // Track token request bodies
 const tokenRequestBodies: string[] = [];
 await context.route('**/v1/client/sessions/*/tokens*', async route => {
 const postData = route.request().postData();
 if (postData) {
 tokenRequestBodies.push(postData);
 }
 await route.continue();
 });

 // Force a fresh token fetch (cache miss -> hits /tokens endpoint)
 const token = await page.evaluate(async () => {
 const clerk = (window as any).Clerk;
 await clerk.session?.clearCache();
 return await clerk.session?.getToken({ skipCache: true });
 });

 // Token refresh should succeed (backend ignores the param for now)
 expect(token).toBeTruthy();

 // Verify token param is present in the POST body (form-urlencoded)
 // fapiClient serializes body as form-urlencoded via qs.stringify(camelToSnake(body))
 // so "token" stays "token" (no case change) and the body looks like "organization_id=&token=<jwt>"
 expect(tokenRequestBodies.length).toBeGreaterThanOrEqual(1);
 const lastBody = tokenRequestBodies[tokenRequestBodies.length - 1];
 expect(lastBody).toContain('token=');

 // User should still be signed in after refresh
 await u.po.expect.toBeSignedIn();
 });
 });
});

2 changes: 1 addition & 1 deletion
packages/clerk-js/bundlewatch.config.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
{
 "files": [
 { "path": "./dist/clerk.js", "maxSize": "540KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "66KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "67KB" },
 { "path": "./dist/clerk.legacy.browser.js", "maxSize": "108KB" },
 { "path": "./dist/clerk.no-rhc.js", "maxSize": "307KB" },
 { "path": "./dist/clerk.native.js", "maxSize": "66KB" },
Expand Down

3 changes: 3 additions & 0 deletions
packages/clerk-js/src/core/resources/AuthConfig.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -8,6 +8,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 reverification: boolean = false;
 singleSessionMode: boolean = false;
 preferredChannels: Record<string, PhoneCodeChannel> | null = null;
 sessionMinter: boolean = false;

 public constructor(data: Partial<AuthConfigJSON> | null = null) {
 super();
Expand All@@ -23,6 +24,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 this.reverification = this.withDefault(data.reverification, this.reverification);
 this.singleSessionMode = this.withDefault(data.single_session_mode, this.singleSessionMode);
 this.preferredChannels = this.withDefault(data.preferred_channels, this.preferredChannels);
 this.sessionMinter = this.withDefault(data.session_minter, this.sessionMinter);
 return this;
 }

Expand All@@ -33,6 +35,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 object: 'auth_config',
 reverification: this.reverification,
 single_session_mode: this.singleSessionMode,
 session_minter: this.sessionMinter,
 };
 }
}

8 changes: 7 additions & 1 deletion
packages/clerk-js/src/core/resources/Session.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -480,7 +480,13 @@ export class Session extends BaseResource implements SessionResource {
 ): Promise<TokenResource> {
 const path = template ? `${this.path()}/tokens/${template}` : `${this.path()}/tokens`;
 // TODO: update template endpoint to accept organizationId
 const params: Record<string, string | null> = template ? {} : { organizationId: organizationId ?? null };
 const sessionMinterEnabled = Session.clerk?.__internal_environment?.authConfig?.sessionMinter;
 const params: Record<string, string | null> = template
 ? {}
 : {
 organizationId: organizationId ?? null,
 ...(sessionMinterEnabled && this.lastActiveToken ? { token: this.lastActiveToken.getRawString() } : {}),
 };
 const lastActiveToken = this.lastActiveToken?.getRawString();

 const tokenResolver = Token.create(path, params, skipCache ? { debug: 'skip_cache' } : undefined).catch(e => {
Expand Down

1 change: 1 addition & 0 deletions
packages/clerk-js/src/core/resources/__tests__/AuthConfig.test.ts

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Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,6 +46,7 @@ describe('AuthConfig', () => {
 id: '',
 reverification: true,
 single_session_mode: true,
 session_minter: false,
 });
 });
});

124 changes: 124 additions & 0 deletions
packages/clerk-js/src/core/resources/__tests__/Session.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1522,6 +1522,130 @@ describe('Session', () => {
 });
 });

 describe('sends previous token in /tokens request body', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;

 beforeEach(() => {
 dispatchSpy = vi.spyOn(eventBus, 'emit');
 fetchSpy = vi.spyOn(BaseResource, '_fetch' as any);
 BaseResource.clerk = clerkMock({
 __internal_environment: {
 authConfig: { sessionMinter: true },
 },
 }) as any;
 });

 afterEach(() => {
 dispatchSpy?.mockRestore();
 fetchSpy?.mockRestore();
 BaseResource.clerk = null as any;
 });

 it('includes token in request body when lastActiveToken exists', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null, token: mockJwt },
 });
 });

 it('does not include token key in request body when lastActiveToken is null (first mint)', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as unknown as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null },
 });
 expect(fetchSpy.mock.calls[0][0].body).not.toHaveProperty('token');
 });

 it('does not include token in request body for template token requests', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken({ template: 'my-template' });

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens/my-template',
 method: 'POST',
 });
 expect(fetchSpy.mock.calls[0][0].body).toEqual({});
 });

 it('token value matches lastActiveToken.getRawString() exactly', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy.mock.calls[0][0].body.token).toBe(mockJwt);
 });
 });

 describe('origin outage mode fallback', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;
Expand Down

1 change: 1 addition & 0 deletions
packages/shared/src/types/authConfig.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -21,5 +21,6 @@ export interface AuthConfigResource extends ClerkResource {
 * Preferred channels for phone code providers.
 */
 preferredChannels: Record<string, PhoneCodeChannel> | null;
 sessionMinter: boolean;
 __internal_toSnapshot: () => AuthConfigJSONSnapshot;
}

1 change: 1 addition & 0 deletions
packages/shared/src/types/json.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -332,6 +332,7 @@ export interface AuthConfigJSON extends ClerkResourceJSON {
 claimed_at: number | null;
 reverification: boolean;
 preferred_channels?: Record<string, PhoneCodeChannel>;
 session_minter?: boolean;
}

export interface VerificationJSON extends ClerkResourceJSON {
Expand Down
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
feat(clerk-js): Send previous session token on /tokens requests by nikosdouvlis · Pull Request #8105 · clerk/javascript · GitHub
Skip to content
feat(clerk-js): Send previous session token on /tokens requests#8105

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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Sign in
to your account

 Merged

nikosdouvlis
merged 6 commits into

from

Mar 19, 2026
 Merged


feat(clerk-js): Send previous session token on /tokens requests
#8105
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cbc83a0

feat(clerk-js): Send previous session token on /tokens requests


nikosdouvlis Mar 18, 2026
388086f

test(clerk-js): Add tests for sending previous token in /tokens body


nikosdouvlis Mar 18, 2026
66d9de6

feat(clerk-js): Gate previous token in /tokens body behind session_mi…


nikosdouvlis Mar 19, 2026
2b6ae78

refactor(clerk-js): Move session_minter flag from Environment to Auth…


nikosdouvlis Mar 19, 2026
469fb9f

fix(clerk-js): Add sessionMinter to test mock so feature gate passes


nikosdouvlis Mar 19, 2026
ecdb80a

fix(clerk-js): Update AuthConfig snapshot test and bump bundlewatch l…


nikosdouvlis Mar 19, 2026

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5 changes: 5 additions & 0 deletions
.changeset/session-minter-send-token.md

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
---
'@clerk/clerk-js': patch
---

Send previous session token on `/tokens` requests to support Session Minter edge token minting.

41 changes: 41 additions & 0 deletions
integration/tests/resiliency.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -518,4 +518,45 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withEmailCodes] })('resilienc
 await u.po.clerk.toBeLoaded();
 });
 });

 test.describe('token refresh with previous token in body', () => {
 test('token refresh includes previous token in POST body and succeeds', async ({ page, context }) => {
 const u = createTestUtils({ app, page, context });

 // Sign in
 await u.po.signIn.goTo();
 await u.po.signIn.signInWithEmailAndInstantPassword({ email: fakeUser.email, password: fakeUser.password });
 await u.po.expect.toBeSignedIn();

 // Track token request bodies
 const tokenRequestBodies: string[] = [];
 await context.route('**/v1/client/sessions/*/tokens*', async route => {
 const postData = route.request().postData();
 if (postData) {
 tokenRequestBodies.push(postData);
 }
 await route.continue();
 });

 // Force a fresh token fetch (cache miss -> hits /tokens endpoint)
 const token = await page.evaluate(async () => {
 const clerk = (window as any).Clerk;
 await clerk.session?.clearCache();
 return await clerk.session?.getToken({ skipCache: true });
 });

 // Token refresh should succeed (backend ignores the param for now)
 expect(token).toBeTruthy();

 // Verify token param is present in the POST body (form-urlencoded)
 // fapiClient serializes body as form-urlencoded via qs.stringify(camelToSnake(body))
 // so "token" stays "token" (no case change) and the body looks like "organization_id=&token=<jwt>"
 expect(tokenRequestBodies.length).toBeGreaterThanOrEqual(1);
 const lastBody = tokenRequestBodies[tokenRequestBodies.length - 1];
 expect(lastBody).toContain('token=');

 // User should still be signed in after refresh
 await u.po.expect.toBeSignedIn();
 });
 });
});

2 changes: 1 addition & 1 deletion
packages/clerk-js/bundlewatch.config.json

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
{
 "files": [
 { "path": "./dist/clerk.js", "maxSize": "540KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "66KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "67KB" },
 { "path": "./dist/clerk.legacy.browser.js", "maxSize": "108KB" },
 { "path": "./dist/clerk.no-rhc.js", "maxSize": "307KB" },
 { "path": "./dist/clerk.native.js", "maxSize": "66KB" },
Expand Down

3 changes: 3 additions & 0 deletions
packages/clerk-js/src/core/resources/AuthConfig.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -8,6 +8,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 reverification: boolean = false;
 singleSessionMode: boolean = false;
 preferredChannels: Record<string, PhoneCodeChannel> | null = null;
 sessionMinter: boolean = false;

 public constructor(data: Partial<AuthConfigJSON> | null = null) {
 super();
Expand All@@ -23,6 +24,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 this.reverification = this.withDefault(data.reverification, this.reverification);
 this.singleSessionMode = this.withDefault(data.single_session_mode, this.singleSessionMode);
 this.preferredChannels = this.withDefault(data.preferred_channels, this.preferredChannels);
 this.sessionMinter = this.withDefault(data.session_minter, this.sessionMinter);
 return this;
 }

Expand All@@ -33,6 +35,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 object: 'auth_config',
 reverification: this.reverification,
 single_session_mode: this.singleSessionMode,
 session_minter: this.sessionMinter,
 };
 }
}

8 changes: 7 additions & 1 deletion
packages/clerk-js/src/core/resources/Session.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -480,7 +480,13 @@ export class Session extends BaseResource implements SessionResource {
 ): Promise<TokenResource> {
 const path = template ? `${this.path()}/tokens/${template}` : `${this.path()}/tokens`;
 // TODO: update template endpoint to accept organizationId
 const params: Record<string, string | null> = template ? {} : { organizationId: organizationId ?? null };
 const sessionMinterEnabled = Session.clerk?.__internal_environment?.authConfig?.sessionMinter;
 const params: Record<string, string | null> = template
 ? {}
 : {
 organizationId: organizationId ?? null,
 ...(sessionMinterEnabled && this.lastActiveToken ? { token: this.lastActiveToken.getRawString() } : {}),
 };
 const lastActiveToken = this.lastActiveToken?.getRawString();

 const tokenResolver = Token.create(path, params, skipCache ? { debug: 'skip_cache' } : undefined).catch(e => {
Expand Down

1 change: 1 addition & 0 deletions
packages/clerk-js/src/core/resources/__tests__/AuthConfig.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -46,6 +46,7 @@ describe('AuthConfig', () => {
 id: '',
 reverification: true,
 single_session_mode: true,
 session_minter: false,
 });
 });
});

124 changes: 124 additions & 0 deletions
packages/clerk-js/src/core/resources/__tests__/Session.test.ts

View file


Open in desktop

Original file line numberDiff line numberDiff line change
Expand Up@@ -1522,6 +1522,130 @@ describe('Session', () => {
 });
 });

 describe('sends previous token in /tokens request body', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;

 beforeEach(() => {
 dispatchSpy = vi.spyOn(eventBus, 'emit');
 fetchSpy = vi.spyOn(BaseResource, '_fetch' as any);
 BaseResource.clerk = clerkMock({
 __internal_environment: {
 authConfig: { sessionMinter: true },
 },
 }) as any;
 });

 afterEach(() => {
 dispatchSpy?.mockRestore();
 fetchSpy?.mockRestore();
 BaseResource.clerk = null as any;
 });

 it('includes token in request body when lastActiveToken exists', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null, token: mockJwt },
 });
 });

 it('does not include token key in request body when lastActiveToken is null (first mint)', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as unknown as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null },
 });
 expect(fetchSpy.mock.calls[0][0].body).not.toHaveProperty('token');
 });

 it('does not include token in request body for template token requests', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken({ template: 'my-template' });

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens/my-template',
 method: 'POST',
 });
 expect(fetchSpy.mock.calls[0][0].body).toEqual({});
 });

 it('token value matches lastActiveToken.getRawString() exactly', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy.mock.calls[0][0].body.token).toBe(mockJwt);
 });
 });

 describe('origin outage mode fallback', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;
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1 change: 1 addition & 0 deletions
packages/shared/src/types/authConfig.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,5 +21,6 @@ export interface AuthConfigResource extends ClerkResource {
 * Preferred channels for phone code providers.
 */
 preferredChannels: Record<string, PhoneCodeChannel> | null;
 sessionMinter: boolean;
 __internal_toSnapshot: () => AuthConfigJSONSnapshot;
}

1 change: 1 addition & 0 deletions
packages/shared/src/types/json.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -332,6 +332,7 @@ export interface AuthConfigJSON extends ClerkResourceJSON {
 claimed_at: number | null;
 reverification: boolean;
 preferred_channels?: Record<string, PhoneCodeChannel>;
 session_minter?: boolean;
}

export interface VerificationJSON extends ClerkResourceJSON {
Expand Down
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if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
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function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
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var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
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})();
})();
feat(clerk-js): Send previous session token on /tokens requests by nikosdouvlis · Pull Request #8105 · clerk/javascript · GitHub
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feat(clerk-js): Send previous session token on /tokens requests#8105

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 Merged

nikosdouvlis
merged 6 commits into

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Mar 19, 2026
 Merged


feat(clerk-js): Send previous session token on /tokens requests
#8105
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cbc83a0

feat(clerk-js): Send previous session token on /tokens requests


nikosdouvlis Mar 18, 2026
388086f

test(clerk-js): Add tests for sending previous token in /tokens body


nikosdouvlis Mar 18, 2026
66d9de6

feat(clerk-js): Gate previous token in /tokens body behind session_mi…


nikosdouvlis Mar 19, 2026
2b6ae78

refactor(clerk-js): Move session_minter flag from Environment to Auth…


nikosdouvlis Mar 19, 2026
469fb9f

fix(clerk-js): Add sessionMinter to test mock so feature gate passes


nikosdouvlis Mar 19, 2026
ecdb80a

fix(clerk-js): Update AuthConfig snapshot test and bump bundlewatch l…


nikosdouvlis Mar 19, 2026

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5 changes: 5 additions & 0 deletions
.changeset/session-minter-send-token.md

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
---
'@clerk/clerk-js': patch
---

Send previous session token on `/tokens` requests to support Session Minter edge token minting.

41 changes: 41 additions & 0 deletions
integration/tests/resiliency.test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -518,4 +518,45 @@ testAgainstRunningApps({ withEnv: [appConfigs.envs.withEmailCodes] })('resilienc
 await u.po.clerk.toBeLoaded();
 });
 });

 test.describe('token refresh with previous token in body', () => {
 test('token refresh includes previous token in POST body and succeeds', async ({ page, context }) => {
 const u = createTestUtils({ app, page, context });

 // Sign in
 await u.po.signIn.goTo();
 await u.po.signIn.signInWithEmailAndInstantPassword({ email: fakeUser.email, password: fakeUser.password });
 await u.po.expect.toBeSignedIn();

 // Track token request bodies
 const tokenRequestBodies: string[] = [];
 await context.route('**/v1/client/sessions/*/tokens*', async route => {
 const postData = route.request().postData();
 if (postData) {
 tokenRequestBodies.push(postData);
 }
 await route.continue();
 });

 // Force a fresh token fetch (cache miss -> hits /tokens endpoint)
 const token = await page.evaluate(async () => {
 const clerk = (window as any).Clerk;
 await clerk.session?.clearCache();
 return await clerk.session?.getToken({ skipCache: true });
 });

 // Token refresh should succeed (backend ignores the param for now)
 expect(token).toBeTruthy();

 // Verify token param is present in the POST body (form-urlencoded)
 // fapiClient serializes body as form-urlencoded via qs.stringify(camelToSnake(body))
 // so "token" stays "token" (no case change) and the body looks like "organization_id=&token=<jwt>"
 expect(tokenRequestBodies.length).toBeGreaterThanOrEqual(1);
 const lastBody = tokenRequestBodies[tokenRequestBodies.length - 1];
 expect(lastBody).toContain('token=');

 // User should still be signed in after refresh
 await u.po.expect.toBeSignedIn();
 });
 });
});

2 changes: 1 addition & 1 deletion
packages/clerk-js/bundlewatch.config.json

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Original file line numberDiff line numberDiff line change
@@ -1,7 +1,7 @@
{
 "files": [
 { "path": "./dist/clerk.js", "maxSize": "540KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "66KB" },
 { "path": "./dist/clerk.browser.js", "maxSize": "67KB" },
 { "path": "./dist/clerk.legacy.browser.js", "maxSize": "108KB" },
 { "path": "./dist/clerk.no-rhc.js", "maxSize": "307KB" },
 { "path": "./dist/clerk.native.js", "maxSize": "66KB" },
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3 changes: 3 additions & 0 deletions
packages/clerk-js/src/core/resources/AuthConfig.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -8,6 +8,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 reverification: boolean = false;
 singleSessionMode: boolean = false;
 preferredChannels: Record<string, PhoneCodeChannel> | null = null;
 sessionMinter: boolean = false;

 public constructor(data: Partial<AuthConfigJSON> | null = null) {
 super();
Expand All@@ -23,6 +24,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 this.reverification = this.withDefault(data.reverification, this.reverification);
 this.singleSessionMode = this.withDefault(data.single_session_mode, this.singleSessionMode);
 this.preferredChannels = this.withDefault(data.preferred_channels, this.preferredChannels);
 this.sessionMinter = this.withDefault(data.session_minter, this.sessionMinter);
 return this;
 }

Expand All@@ -33,6 +35,7 @@ export class AuthConfig extends BaseResource implements AuthConfigResource {
 object: 'auth_config',
 reverification: this.reverification,
 single_session_mode: this.singleSessionMode,
 session_minter: this.sessionMinter,
 };
 }
}

8 changes: 7 additions & 1 deletion
packages/clerk-js/src/core/resources/Session.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -480,7 +480,13 @@ export class Session extends BaseResource implements SessionResource {
 ): Promise<TokenResource> {
 const path = template ? `${this.path()}/tokens/${template}` : `${this.path()}/tokens`;
 // TODO: update template endpoint to accept organizationId
 const params: Record<string, string | null> = template ? {} : { organizationId: organizationId ?? null };
 const sessionMinterEnabled = Session.clerk?.__internal_environment?.authConfig?.sessionMinter;
 const params: Record<string, string | null> = template
 ? {}
 : {
 organizationId: organizationId ?? null,
 ...(sessionMinterEnabled && this.lastActiveToken ? { token: this.lastActiveToken.getRawString() } : {}),
 };
 const lastActiveToken = this.lastActiveToken?.getRawString();

 const tokenResolver = Token.create(path, params, skipCache ? { debug: 'skip_cache' } : undefined).catch(e => {
Expand Down

1 change: 1 addition & 0 deletions
packages/clerk-js/src/core/resources/__tests__/AuthConfig.test.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -46,6 +46,7 @@ describe('AuthConfig', () => {
 id: '',
 reverification: true,
 single_session_mode: true,
 session_minter: false,
 });
 });
});

124 changes: 124 additions & 0 deletions
packages/clerk-js/src/core/resources/__tests__/Session.test.ts

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Expand Up@@ -1522,6 +1522,130 @@ describe('Session', () => {
 });
 });

 describe('sends previous token in /tokens request body', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;

 beforeEach(() => {
 dispatchSpy = vi.spyOn(eventBus, 'emit');
 fetchSpy = vi.spyOn(BaseResource, '_fetch' as any);
 BaseResource.clerk = clerkMock({
 __internal_environment: {
 authConfig: { sessionMinter: true },
 },
 }) as any;
 });

 afterEach(() => {
 dispatchSpy?.mockRestore();
 fetchSpy?.mockRestore();
 BaseResource.clerk = null as any;
 });

 it('includes token in request body when lastActiveToken exists', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null, token: mockJwt },
 });
 });

 it('does not include token key in request body when lastActiveToken is null (first mint)', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as unknown as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens',
 method: 'POST',
 body: { organizationId: null },
 });
 expect(fetchSpy.mock.calls[0][0].body).not.toHaveProperty('token');
 });

 it('does not include token in request body for template token requests', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken({ template: 'my-template' });

 expect(fetchSpy).toHaveBeenCalledTimes(1);
 expect(fetchSpy.mock.calls[0][0]).toMatchObject({
 path: '/client/sessions/session_1/tokens/my-template',
 method: 'POST',
 });
 expect(fetchSpy.mock.calls[0][0].body).toEqual({});
 });

 it('token value matches lastActiveToken.getRawString() exactly', async () => {
 const session = new Session({
 status: 'active',
 id: 'session_1',
 object: 'session',
 user: createUser({}),
 last_active_organization_id: null,
 last_active_token: { object: 'token', jwt: mockJwt },
 actor: null,
 created_at: new Date().getTime(),
 updated_at: new Date().getTime(),
 } as SessionJSON);

 SessionTokenCache.clear();

 fetchSpy.mockResolvedValueOnce({ object: 'token', jwt: mockJwt });

 await session.getToken();

 expect(fetchSpy.mock.calls[0][0].body.token).toBe(mockJwt);
 });
 });

 describe('origin outage mode fallback', () => {
 let dispatchSpy: ReturnType<typeof vi.spyOn>;
 let fetchSpy: ReturnType<typeof vi.spyOn>;
Expand Down

1 change: 1 addition & 0 deletions
packages/shared/src/types/authConfig.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -21,5 +21,6 @@ export interface AuthConfigResource extends ClerkResource {
 * Preferred channels for phone code providers.
 */
 preferredChannels: Record<string, PhoneCodeChannel> | null;
 sessionMinter: boolean;
 __internal_toSnapshot: () => AuthConfigJSONSnapshot;
}

1 change: 1 addition & 0 deletions
packages/shared/src/types/json.ts

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Original file line numberDiff line numberDiff line change
Expand Up@@ -332,6 +332,7 @@ export interface AuthConfigJSON extends ClerkResourceJSON {
 claimed_at: number | null;
 reverification: boolean;
 preferred_channels?: Record<string, PhoneCodeChannel>;
 session_minter?: boolean;
}

export interface VerificationJSON extends ClerkResourceJSON {
Expand Down
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