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fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186

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bryce/fix-proxy-nextresponse-redirect
Mar 30, 2026
Merged

fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
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bryce/fix-proxy-nextresponse-redirect

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@brkalowbrkalow commented Mar 27, 2026•
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Summary

  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.

How it was discovered

A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.

Test plan

  • Backend proxy tests pass (72/72)
  • Next.js clerkMiddleware tests pass (134/134)
  • Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in

🤖 Generated with Claude Code

Summary by CodeRabbit

  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.

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🦋 Changeset detected

Latest commit: f87586c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 11 packages
NameType
@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
@clerk/react-routerPatch
@clerk/tanstack-react-startPatch
@clerk/testingPatch

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!snapshot

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Hey @brkalow - the snapshot version command generated the following package versions:

PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941

Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit

npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact

@clerk/astro

npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact

@clerk/backend

npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact

@clerk/chrome-extension

npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact

@clerk/clerk-js

npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact

@clerk/dev-cli

npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact

@clerk/expo

npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact

@clerk/expo-passkeys

npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact

@clerk/express

npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact

@clerk/fastify

npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact

@clerk/hono

npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact

@clerk/localizations

npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact

@clerk/msw

npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact

@clerk/nextjs

npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact

@clerk/nuxt

npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact

@clerk/react

npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact

@clerk/react-router

npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact

@clerk/shared

npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact

@clerk/tanstack-react-start

npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact

@clerk/testing

npm i @clerk/testing@2.0.7-snapshot.v20260327200941 --save-exact

@clerk/ui

npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact

@clerk/upgrade

npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact

@clerk/vue

npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact

@brkalow
brkalowforce-pushed the bryce/fix-proxy-nextresponse-redirect branch from e2288ff to 184e184CompareMarch 27, 2026 20:27
@brkalowbrkalow changed the title fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
brkalow
brkalow commented Mar 27, 2026
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Comment threadpackages/backend/src/proxy.ts Outdated
@brkalow
brkalow marked this pull request as ready for review March 27, 2026 21:04
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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: Repository YAML (base), Organization UI (inherited)

Review profile: ASSERTIVE

Plan: Pro

Run ID: 30312067-286c-45ee-93e3-7dda9660d01d

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Reviewing files that changed from the base of the PR and between 3ffbec2 and f87586c.

📒 Files selected for processing (2)
  • .changeset/fix-proxy-redirect-manual.md
  • packages/backend/src/proxy.ts
📝 Walkthrough

Walkthrough

The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.

🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check nameStatusExplanation
Description Check✅ PassedCheck skipped - CodeRabbit’s high-level summary is enabled.
Title check✅ PassedThe title clearly and accurately summarizes the main change: adding redirect:'manual' to the frontend API proxy fetch call to fix redirect handling behavior.
Docstring Coverage✅ PassedDocstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.

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npm i https://pkg.pr.new/@clerk/agent-toolkit@8186

@clerk/astro

npm i https://pkg.pr.new/@clerk/astro@8186

@clerk/backend

npm i https://pkg.pr.new/@clerk/backend@8186

@clerk/chrome-extension

npm i https://pkg.pr.new/@clerk/chrome-extension@8186

@clerk/clerk-js

npm i https://pkg.pr.new/@clerk/clerk-js@8186

@clerk/dev-cli

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@clerk/expo

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@clerk/expo-passkeys

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@clerk/express

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@clerk/fastify

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@clerk/hono

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@clerk/localizations

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@clerk/nextjs

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@clerk/nuxt

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@clerk/react

npm i https://pkg.pr.new/@clerk/react@8186

@clerk/react-router

npm i https://pkg.pr.new/@clerk/react-router@8186

@clerk/shared

npm i https://pkg.pr.new/@clerk/shared@8186

@clerk/tanstack-react-start

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@clerk/testing

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@clerk/ui

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@clerk/upgrade

npm i https://pkg.pr.new/@clerk/upgrade@8186

@clerk/vue

npm i https://pkg.pr.new/@clerk/vue@8186

commit: f87586c

brkalowand others added 3 commits March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
5875a1a
@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
brkalowforce-pushed the bryce/fix-proxy-nextresponse-redirect branch from 3ffbec2 to f87586cCompareMarch 27, 2026 21:18
@brkalow
brkalow merged commit 39ee042 into mainMar 30, 2026
44 checks passed
@brkalow
brkalow deleted the bryce/fix-proxy-nextresponse-redirect branch March 30, 2026 15:24
@clerk-cookieclerk-cookie mentioned this pull request Mar 27, 2026
Merged
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fix(backend): use redirect:'manual' in frontend API proxy fetch by brkalow · Pull Request #8186 · clerk/javascript · GitHub
Skip to content
fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186
Merged
brkalow merged 3 commits into
mainfrom 
bryce/fix-proxy-nextresponse-redirect
Mar 30, 2026
Merged
fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
mainfrom 
bryce/fix-proxy-nextresponse-redirect
Conversation
@brkalow
@brkalowbrkalow
commented
Mar 27, 2026•

edited by coderabbitai
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Summary
  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.
How it was discovered
A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.
Test plan
  •  Backend proxy tests pass (72/72)
  •  Next.js clerkMiddleware tests pass (134/134)
  •  Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in
🤖 Generated with Claude Code
Summary by CodeRabbit
  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.
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🦋 Changeset detected
Latest commit: f87586c
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 11 packages
NameType
@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
@clerk/react-routerPatch
@clerk/tanstack-react-startPatch
@clerk/testingPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
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!snapshot
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Hey @brkalow - the snapshot version command generated the following package versions:
PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941
Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit
npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact
@clerk/astro
npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/backend
npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact
@clerk/chrome-extension
npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/clerk-js
npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact
@clerk/dev-cli
npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact
@clerk/expo
npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/expo-passkeys
npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/express
npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/fastify
npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/hono
npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact
@clerk/localizations
npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact
@clerk/msw
npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact
@clerk/nextjs
npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact
@clerk/nuxt
npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/react
npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact
@clerk/react-router
npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/shared
npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact
@clerk/tanstack-react-start
npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/testing
npm i @clerk/testing@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/ui
npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact
@clerk/upgrade
npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact
@clerk/vue
npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact
@brkalow
brkalowforce-pushed
the
bryce/fix-proxy-nextresponse-redirect
branch
from
e2288ff to
184e184CompareMarch 27, 2026 20:27
@brkalowbrkalow
changed the title
fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
brkalow
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commented
Mar 27, 2026
View reviewed changes
Comment threadpackages/backend/src/proxy.ts
Outdated

@brkalow
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marked this pull request as ready for review
March 27, 2026 21:04
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No actionable comments were generated in the recent review. 🎉
ℹ️ Recent review info
⚙️ Run configuration
Configuration used: Repository YAML (base), Organization UI (inherited)
Review profile: ASSERTIVE
Plan: Pro
Run ID: 30312067-286c-45ee-93e3-7dda9660d01d
📥 Commits
Reviewing files that changed from the base of the PR and between 3ffbec2 and f87586c.
📒 Files selected for processing (2)
  • .changeset/fix-proxy-redirect-manual.md
  • packages/backend/src/proxy.ts
📝 Walkthrough
Walkthrough
The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.
🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check nameStatusExplanation
Description Check✅ PassedCheck skipped - CodeRabbit’s high-level summary is enabled.
Title check✅ PassedThe title clearly and accurately summarizes the main change: adding redirect:'manual' to the frontend API proxy fetch call to fix redirect handling behavior.
Docstring Coverage✅ PassedDocstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
✏️ Tip: You can configure your own custom pre-merge checks in the settings.
Comment @coderabbitai help to get the list of available commands and usage tips.
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@clerk/agent-toolkit
npm i https://pkg.pr.new/@clerk/agent-toolkit@8186

@clerk/astro
npm i https://pkg.pr.new/@clerk/astro@8186

@clerk/backend
npm i https://pkg.pr.new/@clerk/backend@8186

@clerk/chrome-extension
npm i https://pkg.pr.new/@clerk/chrome-extension@8186

@clerk/clerk-js
npm i https://pkg.pr.new/@clerk/clerk-js@8186

@clerk/dev-cli
npm i https://pkg.pr.new/@clerk/dev-cli@8186

@clerk/expo
npm i https://pkg.pr.new/@clerk/expo@8186

@clerk/expo-passkeys
npm i https://pkg.pr.new/@clerk/expo-passkeys@8186

@clerk/express
npm i https://pkg.pr.new/@clerk/express@8186

@clerk/fastify
npm i https://pkg.pr.new/@clerk/fastify@8186

@clerk/hono
npm i https://pkg.pr.new/@clerk/hono@8186

@clerk/localizations
npm i https://pkg.pr.new/@clerk/localizations@8186

@clerk/nextjs
npm i https://pkg.pr.new/@clerk/nextjs@8186

@clerk/nuxt
npm i https://pkg.pr.new/@clerk/nuxt@8186

@clerk/react
npm i https://pkg.pr.new/@clerk/react@8186

@clerk/react-router
npm i https://pkg.pr.new/@clerk/react-router@8186

@clerk/shared
npm i https://pkg.pr.new/@clerk/shared@8186

@clerk/tanstack-react-start
npm i https://pkg.pr.new/@clerk/tanstack-react-start@8186

@clerk/testing
npm i https://pkg.pr.new/@clerk/testing@8186

@clerk/ui
npm i https://pkg.pr.new/@clerk/ui@8186

@clerk/upgrade
npm i https://pkg.pr.new/@clerk/upgrade@8186

@clerk/vue
npm i https://pkg.pr.new/@clerk/vue@8186

commit: f87586c
brkalowand others
added 3 commits
March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
5875a1a
@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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brkalow
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Mar 27, 2026
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try {
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fix(backend): use redirect:'manual' in frontend API proxy fetch by brkalow · Pull Request #8186 · clerk/javascript · GitHub
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fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186
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fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
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@brkalow
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Mar 27, 2026•

edited by coderabbitai
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Summary
  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.
How it was discovered
A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.
Test plan
  •  Backend proxy tests pass (72/72)
  •  Next.js clerkMiddleware tests pass (134/134)
  •  Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in
🤖 Generated with Claude Code
Summary by CodeRabbit
  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.
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🦋 Changeset detected
Latest commit: f87586c
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 11 packages
NameType
@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
@clerk/react-routerPatch
@clerk/tanstack-react-startPatch
@clerk/testingPatch
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Hey @brkalow - the snapshot version command generated the following package versions:
PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941
Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit
npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact
@clerk/astro
npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/backend
npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact
@clerk/chrome-extension
npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/clerk-js
npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact
@clerk/dev-cli
npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact
@clerk/expo
npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/expo-passkeys
npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/express
npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/fastify
npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/hono
npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact
@clerk/localizations
npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact
@clerk/msw
npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact
@clerk/nextjs
npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact
@clerk/nuxt
npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/react
npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact
@clerk/react-router
npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/shared
npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact
@clerk/tanstack-react-start
npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/testing
npm i @clerk/testing@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/ui
npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact
@clerk/upgrade
npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact
@clerk/vue
npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact
@brkalow
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changed the title
fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
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No actionable comments were generated in the recent review. 🎉
ℹ️ Recent review info
⚙️ Run configuration
Configuration used: Repository YAML (base), Organization UI (inherited)
Review profile: ASSERTIVE
Plan: Pro
Run ID: 30312067-286c-45ee-93e3-7dda9660d01d
📥 Commits
Reviewing files that changed from the base of the PR and between 3ffbec2 and f87586c.
📒 Files selected for processing (2)
  • .changeset/fix-proxy-redirect-manual.md
  • packages/backend/src/proxy.ts
📝 Walkthrough
Walkthrough
The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.
🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check nameStatusExplanation
Description Check✅ PassedCheck skipped - CodeRabbit’s high-level summary is enabled.
Title check✅ PassedThe title clearly and accurately summarizes the main change: adding redirect:'manual' to the frontend API proxy fetch call to fix redirect handling behavior.
Docstring Coverage✅ PassedDocstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
✏️ Tip: You can configure your own custom pre-merge checks in the settings.
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@clerk/agent-toolkit
npm i https://pkg.pr.new/@clerk/agent-toolkit@8186

@clerk/astro
npm i https://pkg.pr.new/@clerk/astro@8186

@clerk/backend
npm i https://pkg.pr.new/@clerk/backend@8186

@clerk/chrome-extension
npm i https://pkg.pr.new/@clerk/chrome-extension@8186

@clerk/clerk-js
npm i https://pkg.pr.new/@clerk/clerk-js@8186

@clerk/dev-cli
npm i https://pkg.pr.new/@clerk/dev-cli@8186

@clerk/expo
npm i https://pkg.pr.new/@clerk/expo@8186

@clerk/expo-passkeys
npm i https://pkg.pr.new/@clerk/expo-passkeys@8186

@clerk/express
npm i https://pkg.pr.new/@clerk/express@8186

@clerk/fastify
npm i https://pkg.pr.new/@clerk/fastify@8186

@clerk/hono
npm i https://pkg.pr.new/@clerk/hono@8186

@clerk/localizations
npm i https://pkg.pr.new/@clerk/localizations@8186

@clerk/nextjs
npm i https://pkg.pr.new/@clerk/nextjs@8186

@clerk/nuxt
npm i https://pkg.pr.new/@clerk/nuxt@8186

@clerk/react
npm i https://pkg.pr.new/@clerk/react@8186

@clerk/react-router
npm i https://pkg.pr.new/@clerk/react-router@8186

@clerk/shared
npm i https://pkg.pr.new/@clerk/shared@8186

@clerk/tanstack-react-start
npm i https://pkg.pr.new/@clerk/tanstack-react-start@8186

@clerk/testing
npm i https://pkg.pr.new/@clerk/testing@8186

@clerk/ui
npm i https://pkg.pr.new/@clerk/ui@8186

@clerk/upgrade
npm i https://pkg.pr.new/@clerk/upgrade@8186

@clerk/vue
npm i https://pkg.pr.new/@clerk/vue@8186

commit: f87586c
brkalowand others
added 3 commits
March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
5875a1a
@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
brkalowforce-pushed
the
bryce/fix-proxy-nextresponse-redirect
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3ffbec2 to
f87586cCompareMarch 27, 2026 21:18
@brkalow
brkalow
merged commit 39ee042
into
mainMar 30, 2026

44 checks passed

@brkalow
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deleted the

bryce/fix-proxy-nextresponse-redirect

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March 30, 2026 15:24
@clerk-cookieclerk-cookie
mentioned this pull request
Mar 27, 2026
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fix(backend): use redirect:'manual' in frontend API proxy fetch by brkalow · Pull Request #8186 · clerk/javascript · GitHub
Skip to content
fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186
Merged
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bryce/fix-proxy-nextresponse-redirect
Mar 30, 2026
Merged
fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
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Mar 27, 2026•

edited by coderabbitai
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Summary
  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.
How it was discovered
A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.
Test plan
  •  Backend proxy tests pass (72/72)
  •  Next.js clerkMiddleware tests pass (134/134)
  •  Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in
🤖 Generated with Claude Code
Summary by CodeRabbit
  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.
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🦋 Changeset detected
Latest commit: f87586c
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 11 packages
NameType
@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
@clerk/react-routerPatch
@clerk/tanstack-react-startPatch
@clerk/testingPatch
Not sure what this means? Click here to learn what changesets are.
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Hey @brkalow - the snapshot version command generated the following package versions:
PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941
Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit
npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact
@clerk/astro
npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/backend
npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact
@clerk/chrome-extension
npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/clerk-js
npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact
@clerk/dev-cli
npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact
@clerk/expo
npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/expo-passkeys
npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/express
npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/fastify
npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/hono
npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact
@clerk/localizations
npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact
@clerk/msw
npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact
@clerk/nextjs
npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact
@clerk/nuxt
npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/react
npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact
@clerk/react-router
npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/shared
npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact
@clerk/tanstack-react-start
npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/testing
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@clerk/ui
npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact
@clerk/upgrade
npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact
@clerk/vue
npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact
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fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
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  • .changeset/fix-proxy-redirect-manual.md
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📝 Walkthrough
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The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.
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@clerk/fastify
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commit: f87586c
brkalowand others
added 3 commits
March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
5875a1a
@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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, '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" + '
fix(backend): use redirect:'manual' in frontend API proxy fetch by brkalow · Pull Request #8186 · clerk/javascript · GitHub
Skip to content
fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186
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fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
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Mar 27, 2026•

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Summary
  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.
How it was discovered
A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.
Test plan
  •  Backend proxy tests pass (72/72)
  •  Next.js clerkMiddleware tests pass (134/134)
  •  Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in
🤖 Generated with Claude Code
Summary by CodeRabbit
  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.
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🦋 Changeset detected
Latest commit: f87586c
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 11 packages
NameType
@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
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@clerk/tanstack-react-startPatch
@clerk/testingPatch
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Click here if you're a maintainer who wants to add another changeset to this PR
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Hey @brkalow - the snapshot version command generated the following package versions:
PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941
Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit
npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact
@clerk/astro
npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/backend
npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact
@clerk/chrome-extension
npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/clerk-js
npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact
@clerk/dev-cli
npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact
@clerk/expo
npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/expo-passkeys
npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/express
npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/fastify
npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/hono
npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact
@clerk/localizations
npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact
@clerk/msw
npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact
@clerk/nextjs
npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact
@clerk/nuxt
npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/react
npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact
@clerk/react-router
npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/shared
npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact
@clerk/tanstack-react-start
npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/testing
npm i @clerk/testing@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/ui
npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact
@clerk/upgrade
npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact
@clerk/vue
npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact
@brkalow
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@brkalowbrkalow
changed the title
fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
brkalow
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commented
Mar 27, 2026
View reviewed changes
Comment threadpackages/backend/src/proxy.ts
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marked this pull request as ready for review
March 27, 2026 21:04
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No actionable comments were generated in the recent review. 🎉
ℹ️ Recent review info
⚙️ Run configuration
Configuration used: Repository YAML (base), Organization UI (inherited)
Review profile: ASSERTIVE
Plan: Pro
Run ID: 30312067-286c-45ee-93e3-7dda9660d01d
📥 Commits
Reviewing files that changed from the base of the PR and between 3ffbec2 and f87586c.
📒 Files selected for processing (2)
  • .changeset/fix-proxy-redirect-manual.md
  • packages/backend/src/proxy.ts
📝 Walkthrough
Walkthrough
The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.
🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check nameStatusExplanation
Description Check✅ PassedCheck skipped - CodeRabbit’s high-level summary is enabled.
Title check✅ PassedThe title clearly and accurately summarizes the main change: adding redirect:'manual' to the frontend API proxy fetch call to fix redirect handling behavior.
Docstring Coverage✅ PassedDocstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
✏️ Tip: You can configure your own custom pre-merge checks in the settings.
Comment @coderabbitai help to get the list of available commands and usage tips.
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npm i https://pkg.pr.new/@clerk/agent-toolkit@8186

@clerk/astro
npm i https://pkg.pr.new/@clerk/astro@8186

@clerk/backend
npm i https://pkg.pr.new/@clerk/backend@8186

@clerk/chrome-extension
npm i https://pkg.pr.new/@clerk/chrome-extension@8186

@clerk/clerk-js
npm i https://pkg.pr.new/@clerk/clerk-js@8186

@clerk/dev-cli
npm i https://pkg.pr.new/@clerk/dev-cli@8186

@clerk/expo
npm i https://pkg.pr.new/@clerk/expo@8186

@clerk/expo-passkeys
npm i https://pkg.pr.new/@clerk/expo-passkeys@8186

@clerk/express
npm i https://pkg.pr.new/@clerk/express@8186

@clerk/fastify
npm i https://pkg.pr.new/@clerk/fastify@8186

@clerk/hono
npm i https://pkg.pr.new/@clerk/hono@8186

@clerk/localizations
npm i https://pkg.pr.new/@clerk/localizations@8186

@clerk/nextjs
npm i https://pkg.pr.new/@clerk/nextjs@8186

@clerk/nuxt
npm i https://pkg.pr.new/@clerk/nuxt@8186

@clerk/react
npm i https://pkg.pr.new/@clerk/react@8186

@clerk/react-router
npm i https://pkg.pr.new/@clerk/react-router@8186

@clerk/shared
npm i https://pkg.pr.new/@clerk/shared@8186

@clerk/tanstack-react-start
npm i https://pkg.pr.new/@clerk/tanstack-react-start@8186

@clerk/testing
npm i https://pkg.pr.new/@clerk/testing@8186

@clerk/ui
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@clerk/upgrade
npm i https://pkg.pr.new/@clerk/upgrade@8186

@clerk/vue
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commit: f87586c
brkalowand others
added 3 commits
March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
5875a1a
@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
brkalowforce-pushed
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@brkalow
brkalow
merged commit 39ee042
into
mainMar 30, 2026

44 checks passed

@brkalow
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deleted the

bryce/fix-proxy-nextresponse-redirect

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March 30, 2026 15:24
@clerk-cookieclerk-cookie
mentioned this pull request
Mar 27, 2026
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, '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('^' + ".*" + '
fix(backend): use redirect:'manual' in frontend API proxy fetch by brkalow · Pull Request #8186 · clerk/javascript · GitHub
Skip to content
fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186
Merged
brkalow merged 3 commits into
mainfrom 
bryce/fix-proxy-nextresponse-redirect
Mar 30, 2026
Merged
fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
mainfrom 
bryce/fix-proxy-nextresponse-redirect
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@brkalow
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Mar 27, 2026•

edited by coderabbitai
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Summary
  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.
How it was discovered
A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.
Test plan
  •  Backend proxy tests pass (72/72)
  •  Next.js clerkMiddleware tests pass (134/134)
  •  Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in
🤖 Generated with Claude Code
Summary by CodeRabbit
  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.
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🦋 Changeset detected
Latest commit: f87586c
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 11 packages
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@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
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@clerk/tanstack-react-startPatch
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Hey @brkalow - the snapshot version command generated the following package versions:
PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941
Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit
npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact
@clerk/astro
npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/backend
npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact
@clerk/chrome-extension
npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/clerk-js
npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact
@clerk/dev-cli
npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact
@clerk/expo
npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/expo-passkeys
npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/express
npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/fastify
npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/hono
npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact
@clerk/localizations
npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact
@clerk/msw
npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact
@clerk/nextjs
npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact
@clerk/nuxt
npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/react
npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact
@clerk/react-router
npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/shared
npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact
@clerk/tanstack-react-start
npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/testing
npm i @clerk/testing@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/ui
npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact
@clerk/upgrade
npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact
@clerk/vue
npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact
@brkalow
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fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
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Mar 27, 2026
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📒 Files selected for processing (2)
  • .changeset/fix-proxy-redirect-manual.md
  • packages/backend/src/proxy.ts
📝 Walkthrough
Walkthrough
The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.
🚥 Pre-merge checks | ✅ 3
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Check nameStatusExplanation
Description Check✅ PassedCheck skipped - CodeRabbit’s high-level summary is enabled.
Title check✅ PassedThe title clearly and accurately summarizes the main change: adding redirect:'manual' to the frontend API proxy fetch call to fix redirect handling behavior.
Docstring Coverage✅ PassedDocstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
✏️ Tip: You can configure your own custom pre-merge checks in the settings.
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@clerk/backend
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@clerk/chrome-extension
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@clerk/clerk-js
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@clerk/dev-cli
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@clerk/expo-passkeys
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@clerk/express
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@clerk/fastify
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@clerk/hono
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@clerk/localizations
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@clerk/nextjs
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@clerk/nuxt
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@clerk/react
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@clerk/react-router
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@clerk/shared
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@clerk/tanstack-react-start
npm i https://pkg.pr.new/@clerk/tanstack-react-start@8186

@clerk/testing
npm i https://pkg.pr.new/@clerk/testing@8186

@clerk/ui
npm i https://pkg.pr.new/@clerk/ui@8186

@clerk/upgrade
npm i https://pkg.pr.new/@clerk/upgrade@8186

@clerk/vue
npm i https://pkg.pr.new/@clerk/vue@8186

commit: f87586c
brkalowand others
added 3 commits
March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
5875a1a
@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
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@clerk-cookieclerk-cookie
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Mar 27, 2026
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, 'i');
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try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(backend): use redirect:'manual' in frontend API proxy fetch by brkalow · Pull Request #8186 · clerk/javascript · GitHub
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fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186
Merged
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bryce/fix-proxy-nextresponse-redirect
Mar 30, 2026
Merged
fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
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@brkalow
@brkalowbrkalow
commented
Mar 27, 2026•

edited by coderabbitai
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Summary
  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.
How it was discovered
A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.
Test plan
  •  Backend proxy tests pass (72/72)
  •  Next.js clerkMiddleware tests pass (134/134)
  •  Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in
🤖 Generated with Claude Code
Summary by CodeRabbit
  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.
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🦋 Changeset detected
Latest commit: f87586c
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 11 packages
NameType
@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
@clerk/react-routerPatch
@clerk/tanstack-react-startPatch
@clerk/testingPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
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Hey @brkalow - the snapshot version command generated the following package versions:
PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941
Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit
npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact
@clerk/astro
npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/backend
npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact
@clerk/chrome-extension
npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/clerk-js
npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact
@clerk/dev-cli
npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact
@clerk/expo
npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/expo-passkeys
npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/express
npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/fastify
npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/hono
npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact
@clerk/localizations
npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact
@clerk/msw
npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact
@clerk/nextjs
npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact
@clerk/nuxt
npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/react
npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact
@clerk/react-router
npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/shared
npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact
@clerk/tanstack-react-start
npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/testing
npm i @clerk/testing@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/ui
npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact
@clerk/upgrade
npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact
@clerk/vue
npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact
@brkalow
brkalowforce-pushed
the
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e2288ff to
184e184CompareMarch 27, 2026 20:27
@brkalowbrkalow
changed the title
fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
brkalow
brkalow
commented
Mar 27, 2026
View reviewed changes
Comment threadpackages/backend/src/proxy.ts
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No actionable comments were generated in the recent review. 🎉
ℹ️ Recent review info
⚙️ Run configuration
Configuration used: Repository YAML (base), Organization UI (inherited)
Review profile: ASSERTIVE
Plan: Pro
Run ID: 30312067-286c-45ee-93e3-7dda9660d01d
📥 Commits
Reviewing files that changed from the base of the PR and between 3ffbec2 and f87586c.
📒 Files selected for processing (2)
  • .changeset/fix-proxy-redirect-manual.md
  • packages/backend/src/proxy.ts
📝 Walkthrough
Walkthrough
The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.
🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check nameStatusExplanation
Description Check✅ PassedCheck skipped - CodeRabbit’s high-level summary is enabled.
Title check✅ PassedThe title clearly and accurately summarizes the main change: adding redirect:'manual' to the frontend API proxy fetch call to fix redirect handling behavior.
Docstring Coverage✅ PassedDocstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
✏️ Tip: You can configure your own custom pre-merge checks in the settings.
Comment @coderabbitai help to get the list of available commands and usage tips.
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@clerk/agent-toolkit
npm i https://pkg.pr.new/@clerk/agent-toolkit@8186

@clerk/astro
npm i https://pkg.pr.new/@clerk/astro@8186

@clerk/backend
npm i https://pkg.pr.new/@clerk/backend@8186

@clerk/chrome-extension
npm i https://pkg.pr.new/@clerk/chrome-extension@8186

@clerk/clerk-js
npm i https://pkg.pr.new/@clerk/clerk-js@8186

@clerk/dev-cli
npm i https://pkg.pr.new/@clerk/dev-cli@8186

@clerk/expo
npm i https://pkg.pr.new/@clerk/expo@8186

@clerk/expo-passkeys
npm i https://pkg.pr.new/@clerk/expo-passkeys@8186

@clerk/express
npm i https://pkg.pr.new/@clerk/express@8186

@clerk/fastify
npm i https://pkg.pr.new/@clerk/fastify@8186

@clerk/hono
npm i https://pkg.pr.new/@clerk/hono@8186

@clerk/localizations
npm i https://pkg.pr.new/@clerk/localizations@8186

@clerk/nextjs
npm i https://pkg.pr.new/@clerk/nextjs@8186

@clerk/nuxt
npm i https://pkg.pr.new/@clerk/nuxt@8186

@clerk/react
npm i https://pkg.pr.new/@clerk/react@8186

@clerk/react-router
npm i https://pkg.pr.new/@clerk/react-router@8186

@clerk/shared
npm i https://pkg.pr.new/@clerk/shared@8186

@clerk/tanstack-react-start
npm i https://pkg.pr.new/@clerk/tanstack-react-start@8186

@clerk/testing
npm i https://pkg.pr.new/@clerk/testing@8186

@clerk/ui
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@clerk/upgrade
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@clerk/vue
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commit: f87586c
brkalowand others
added 3 commits
March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
5875a1a
@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
brkalowforce-pushed
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bryce/fix-proxy-nextresponse-redirect
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f87586cCompareMarch 27, 2026 21:18
@brkalow
brkalow
merged commit 39ee042
into
mainMar 30, 2026

44 checks passed

@brkalow
brkalow
deleted the

bryce/fix-proxy-nextresponse-redirect

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March 30, 2026 15:24
@clerk-cookieclerk-cookie
mentioned this pull request
Mar 27, 2026
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fix(backend): use redirect:'manual' in frontend API proxy fetch by brkalow · Pull Request #8186 · clerk/javascript · GitHub
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fix(backend): use redirect:'manual' in frontend API proxy fetch - #8186
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bryce/fix-proxy-nextresponse-redirect
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fix(backend): use redirect:'manual' in frontend API proxy fetch#8186
brkalow merged 3 commits into
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bryce/fix-proxy-nextresponse-redirect
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Mar 27, 2026•

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Summary
  • clerkFrontendApiProxy uses fetch() to forward requests to FAPI, but without redirect: 'manual', fetch defaults to redirect: 'follow' — chasing redirects server-side.
  • When FAPI returns a 302 back to the app origin (e.g. after processing an OAuth callback), fetch() follows the redirect internally, hitting the app without auth cookies. This renders the sign-in page at the callback URL.
  • The fix adds redirect: 'manual' to the fetch options so the 302 is returned to the browser as-is.
How it was discovered
A customer's OAuth callback was resolving to their /sign-in page. Server logs showed the proxy request succeeding, but a second request was rendering the dashboard route without auth — this second request was invisible in browser network logs because it was fetch() following the redirect server-side inside the proxy.
Test plan
  •  Backend proxy tests pass (72/72)
  •  Next.js clerkMiddleware tests pass (134/134)
  •  Manual test: OAuth flow with frontendApiProxy enabled completes without redirecting to sign-in
🤖 Generated with Claude Code
Summary by CodeRabbit
  • Bug Fixes
    • Proxy now returns redirect (3xx) responses to clients unchanged instead of following them server-side.
    • Prevents server-side automatic redirect handling for frontend API flows (including post‑OAuth), ensuring clients receive original redirect responses.
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🦋 Changeset detected
Latest commit: f87586c
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 11 packages
NameType
@clerk/backendPatch
@clerk/agent-toolkitPatch
@clerk/astroPatch
@clerk/expressPatch
@clerk/fastifyPatch
@clerk/honoPatch
@clerk/nextjsPatch
@clerk/nuxtPatch
@clerk/react-routerPatch
@clerk/tanstack-react-startPatch
@clerk/testingPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
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!snapshot
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Hey @brkalow - the snapshot version command generated the following package versions:
PackageVersion
@clerk/agent-toolkit0.3.7-snapshot.v20260327200941
@clerk/astro3.0.7-snapshot.v20260327200941
@clerk/backend3.2.3-snapshot.v20260327200941
@clerk/chrome-extension3.1.5-snapshot.v20260327200941
@clerk/clerk-js6.3.3-snapshot.v20260327200941
@clerk/dev-cli0.1.1-snapshot.v20260327200941
@clerk/expo3.1.5-snapshot.v20260327200941
@clerk/expo-passkeys1.0.7-snapshot.v20260327200941
@clerk/express2.0.7-snapshot.v20260327200941
@clerk/fastify3.1.5-snapshot.v20260327200941
@clerk/hono0.1.5-snapshot.v20260327200941
@clerk/localizations4.2.4-snapshot.v20260327200941
@clerk/msw0.0.7-snapshot.v20260327200941
@clerk/nextjs7.0.7-snapshot.v20260327200941
@clerk/nuxt2.0.7-snapshot.v20260327200941
@clerk/react6.1.3-snapshot.v20260327200941
@clerk/react-router3.0.7-snapshot.v20260327200941
@clerk/shared4.3.3-snapshot.v20260327200941
@clerk/tanstack-react-start1.0.7-snapshot.v20260327200941
@clerk/testing2.0.7-snapshot.v20260327200941
@clerk/ui1.2.4-snapshot.v20260327200941
@clerk/upgrade2.0.3-snapshot.v20260327200941
@clerk/vue2.0.7-snapshot.v20260327200941
Tip: Use the snippet copy button below to quickly install the required packages.
@clerk/agent-toolkit
npm i @clerk/agent-toolkit@0.3.7-snapshot.v20260327200941 --save-exact
@clerk/astro
npm i @clerk/astro@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/backend
npm i @clerk/backend@3.2.3-snapshot.v20260327200941 --save-exact
@clerk/chrome-extension
npm i @clerk/chrome-extension@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/clerk-js
npm i @clerk/clerk-js@6.3.3-snapshot.v20260327200941 --save-exact
@clerk/dev-cli
npm i @clerk/dev-cli@0.1.1-snapshot.v20260327200941 --save-exact
@clerk/expo
npm i @clerk/expo@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/expo-passkeys
npm i @clerk/expo-passkeys@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/express
npm i @clerk/express@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/fastify
npm i @clerk/fastify@3.1.5-snapshot.v20260327200941 --save-exact
@clerk/hono
npm i @clerk/hono@0.1.5-snapshot.v20260327200941 --save-exact
@clerk/localizations
npm i @clerk/localizations@4.2.4-snapshot.v20260327200941 --save-exact
@clerk/msw
npm i @clerk/msw@0.0.7-snapshot.v20260327200941 --save-exact
@clerk/nextjs
npm i @clerk/nextjs@7.0.7-snapshot.v20260327200941 --save-exact
@clerk/nuxt
npm i @clerk/nuxt@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/react
npm i @clerk/react@6.1.3-snapshot.v20260327200941 --save-exact
@clerk/react-router
npm i @clerk/react-router@3.0.7-snapshot.v20260327200941 --save-exact
@clerk/shared
npm i @clerk/shared@4.3.3-snapshot.v20260327200941 --save-exact
@clerk/tanstack-react-start
npm i @clerk/tanstack-react-start@1.0.7-snapshot.v20260327200941 --save-exact
@clerk/testing
npm i @clerk/testing@2.0.7-snapshot.v20260327200941 --save-exact
@clerk/ui
npm i @clerk/ui@1.2.4-snapshot.v20260327200941 --save-exact
@clerk/upgrade
npm i @clerk/upgrade@2.0.3-snapshot.v20260327200941 --save-exact
@clerk/vue
npm i @clerk/vue@2.0.7-snapshot.v20260327200941 --save-exact
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@brkalowbrkalow
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fix(nextjs): wrap proxy responses in NextResponse for proper redirect handlingfix(backend): use redirect:'manual' in frontend API proxy fetchMar 27, 2026
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Mar 27, 2026
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March 27, 2026 21:04
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No actionable comments were generated in the recent review. 🎉
ℹ️ Recent review info
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Configuration used: Repository YAML (base), Organization UI (inherited)
Review profile: ASSERTIVE
Plan: Pro
Run ID: 30312067-286c-45ee-93e3-7dda9660d01d
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Reviewing files that changed from the base of the PR and between 3ffbec2 and f87586c.
📒 Files selected for processing (2)
  • .changeset/fix-proxy-redirect-manual.md
  • packages/backend/src/proxy.ts
📝 Walkthrough
Walkthrough
The clerkFrontendApiProxy fetch call in packages/backend/src/proxy.ts was updated to set redirect: 'manual'. This causes the proxy to stop automatically following 3xx responses from the frontend API and instead return redirect status codes and headers to the client unchanged. The change is a single-line addition and does not alter any exported or public API signatures.
🚥 Pre-merge checks | ✅ 3
✅ Passed checks (3 passed)
Check nameStatusExplanation
Description Check✅ PassedCheck skipped - CodeRabbit’s high-level summary is enabled.
Title check✅ PassedThe title clearly and accurately summarizes the main change: adding redirect:'manual' to the frontend API proxy fetch call to fix redirect handling behavior.
Docstring Coverage✅ PassedDocstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
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@clerk/agent-toolkit
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@clerk/astro
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commit: f87586c
brkalowand others
added 3 commits
March 27, 2026 16:17
@brkalow@claude
fix(backend): use redirect:'manual' in frontend API proxy fetch
e222343
fetch() defaults to redirect:'follow', which causes it to chase
same-origin redirects server-side. When FAPI returns a 302 back to
the app origin (e.g. after OAuth callback), the proxy's fetch follows
the redirect internally — hitting the app without auth cookies —
instead of passing the 302 to the browser. This breaks OAuth flows
by rendering the sign-in page at the callback URL.
Adding redirect:'manual' ensures the 302 is returned to the browser
as-is, letting the browser handle the navigation with proper cookies.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
@brkalow
Apply suggestion from@brkalow
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@brkalow@claude
fix(backend): add changeset for proxy redirect fix
f87586c
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Mar 27, 2026
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