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v2 - clean deprecated methods and exports - #1419

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Jan 23, 2026
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v2 - clean deprecated methods and exports#1419
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom
KKonstantinov:feature/clean-deprecated-method-calls

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@KKonstantinovKKonstantinov commented Jan 22, 2026•
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Clean deprecated method signature and some exports previously used for backwards compatibility

Motivation and Context

  • This is a v2 cleanup that removes deprecated, backwards-compat registration APIs on McpServer (.tool, .prompt, .resource) and migrates usage to the explicit registerTool, registerPrompt, and registerResource APIs.
  • Simplifies the public API surface and avoids ambiguous overloads (particularly around tool schema vs annotations), while keeping the supported registration style consistent across tools/resources/prompts.
  • Removes deprecated @modelcontextprotocol/core exports/types that were retained as aliases during spec/API transitions.

How Has This Been Tested?

  • Updated unit and integration tests to use the new registration APIs.
  • Suggested local verification:
    • pnpm test:all
    • pnpm check:all

Breaking Changes

  • Removed deprecated McpServer.tool(), McpServer.prompt(), and McpServer.resource() methods. Use registerTool, registerPrompt, and registerResource instead.
  • Registration signatures are now options-object based:
    • Tools: registerTool(name, { description?, inputSchema?, outputSchema?, annotations?, execution? }, handler) (use {} when no options are needed).
    • Prompts: registerPrompt(name, { description?, argsSchema? }, handler) (use {} when no options are needed).
    • Resources: registerResource(name, uriOrTemplate, metadata, handler) (use {} when no metadata is needed).
  • Removed deprecated @modelcontextprotocol/core exports/types (update imports to the non-deprecated names):
    • isJSONRPCResponse (use isJSONRPCResultResponse / isJSONRPCResponseSchema as appropriate)
    • JSONRPCErrorSchema (use JSONRPCErrorResponseSchema)
    • isJSONRPCError (use isJSONRPCErrorResponse)
    • ResourceReferenceSchema / ResourceReference (use ResourceTemplateReferenceSchema / ResourceTemplateReference)
    • JSONRPCError (use JSONRPCErrorResponse)

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)
  • Documentation update

Checklist

  • I have read the MCP Documentation
  • My code follows the repository's style guidelines
  • New and existing tests pass locally
  • I have added appropriate error handling
  • I have added or updated documentation as needed

Additional context

  • Includes changesets to bump @modelcontextprotocol/{core,server,node,test-integration} after removal of deprecated APIs.
  • Migrates examples and tests to the register* APIs (e.g. examples/server/src/ssePollingExample.ts, server/node middleware tests, and integration tests).

@KKonstantinov
KKonstantinov requested a review from a team as a code ownerJanuary 22, 2026 06:54
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🦋 Changeset detected

Latest commit: 43f9738

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

This PR includes changesets to release 6 packages
NameType
@modelcontextprotocol/nodePatch
@modelcontextprotocol/test-integrationPatch
@modelcontextprotocol/serverPatch
@modelcontextprotocol/corePatch
@modelcontextprotocol/expressPatch
@modelcontextprotocol/honoPatch

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commit: 43f9738

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KKonstantinov marked this pull request as draft January 22, 2026 07:06
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LGTM! Thanks for doing this, .tool() really needs to go :D

@felixweinberger
felixweinberger merged commit dcf708d into modelcontextprotocol:mainJan 23, 2026
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`v2` - clean deprecated methods and exports by KKonstantinov · Pull Request #1419 · modelcontextprotocol/typescript-sdk · GitHub
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v2 - clean deprecated methods and exports - #1419
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felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
Jan 23, 2026
Merged
v2 - clean deprecated methods and exports#1419
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
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Contributor
Clean deprecated method signature and some exports previously used for backwards compatibility
Motivation and Context
  • This is a v2 cleanup that removes deprecated, backwards-compat registration APIs on McpServer (.tool, .prompt, .resource) and migrates usage to the explicit registerTool, registerPrompt, and registerResource APIs.
  • Simplifies the public API surface and avoids ambiguous overloads (particularly around tool schema vs annotations), while keeping the supported registration style consistent across tools/resources/prompts.
  • Removes deprecated @modelcontextprotocol/core exports/types that were retained as aliases during spec/API transitions.
How Has This Been Tested?
  • Updated unit and integration tests to use the new registration APIs.
  • Suggested local verification:

    • pnpm test:all
    • pnpm check:all
Breaking Changes
  • Removed deprecated McpServer.tool(), McpServer.prompt(), and McpServer.resource() methods. Use registerTool, registerPrompt, and registerResource instead.
  • Registration signatures are now options-object based:

    • Tools: registerTool(name, { description?, inputSchema?, outputSchema?, annotations?, execution? }, handler) (use {} when no options are needed).
    • Prompts: registerPrompt(name, { description?, argsSchema? }, handler) (use {} when no options are needed).
    • Resources: registerResource(name, uriOrTemplate, metadata, handler) (use {} when no metadata is needed).
  • Removed deprecated @modelcontextprotocol/core exports/types (update imports to the non-deprecated names):

    • isJSONRPCResponse (use isJSONRPCResultResponse / isJSONRPCResponseSchema as appropriate)
    • JSONRPCErrorSchema (use JSONRPCErrorResponseSchema)
    • isJSONRPCError (use isJSONRPCErrorResponse)
    • ResourceReferenceSchema / ResourceReference (use ResourceTemplateReferenceSchema / ResourceTemplateReference)
    • JSONRPCError (use JSONRPCErrorResponse)
Types of changes
  •  Bug fix (non-breaking change which fixes an issue)
  •  New feature (non-breaking change which adds functionality)
  •  Breaking change (fix or feature that would cause existing functionality to change)
  •  Documentation update
Checklist
  •  I have read the MCP Documentation
  •  My code follows the repository's style guidelines
  •  New and existing tests pass locally
  •  I have added appropriate error handling
  •  I have added or updated documentation as needed
Additional context
  • Includes changesets to bump @modelcontextprotocol/{core,server,node,test-integration} after removal of deprecated APIs.
  • Migrates examples and tests to the register* APIs (e.g. examples/server/src/ssePollingExample.ts, server/node middleware tests, and integration tests).
@KKonstantinov
KKonstantinov
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🦋 Changeset detected
Latest commit: 43f9738
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 6 packages
NameType
@modelcontextprotocol/nodePatch
@modelcontextprotocol/test-integrationPatch
@modelcontextprotocol/serverPatch
@modelcontextprotocol/corePatch
@modelcontextprotocol/expressPatch
@modelcontextprotocol/honoPatch
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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npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1419

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1419

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1419

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1419

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1419

commit: 43f9738
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LGTM! Thanks for doing this, .tool() really needs to go :D
@felixweinberger
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`v2` - clean deprecated methods and exports by KKonstantinov · Pull Request #1419 · modelcontextprotocol/typescript-sdk · GitHub
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v2 - clean deprecated methods and exports - #1419
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modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
Jan 23, 2026
Merged
v2 - clean deprecated methods and exports#1419
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
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Clean deprecated method signature and some exports previously used for backwards compatibility
Motivation and Context
  • This is a v2 cleanup that removes deprecated, backwards-compat registration APIs on McpServer (.tool, .prompt, .resource) and migrates usage to the explicit registerTool, registerPrompt, and registerResource APIs.
  • Simplifies the public API surface and avoids ambiguous overloads (particularly around tool schema vs annotations), while keeping the supported registration style consistent across tools/resources/prompts.
  • Removes deprecated @modelcontextprotocol/core exports/types that were retained as aliases during spec/API transitions.
How Has This Been Tested?
  • Updated unit and integration tests to use the new registration APIs.
  • Suggested local verification:

    • pnpm test:all
    • pnpm check:all
Breaking Changes
  • Removed deprecated McpServer.tool(), McpServer.prompt(), and McpServer.resource() methods. Use registerTool, registerPrompt, and registerResource instead.
  • Registration signatures are now options-object based:

    • Tools: registerTool(name, { description?, inputSchema?, outputSchema?, annotations?, execution? }, handler) (use {} when no options are needed).
    • Prompts: registerPrompt(name, { description?, argsSchema? }, handler) (use {} when no options are needed).
    • Resources: registerResource(name, uriOrTemplate, metadata, handler) (use {} when no metadata is needed).
  • Removed deprecated @modelcontextprotocol/core exports/types (update imports to the non-deprecated names):

    • isJSONRPCResponse (use isJSONRPCResultResponse / isJSONRPCResponseSchema as appropriate)
    • JSONRPCErrorSchema (use JSONRPCErrorResponseSchema)
    • isJSONRPCError (use isJSONRPCErrorResponse)
    • ResourceReferenceSchema / ResourceReference (use ResourceTemplateReferenceSchema / ResourceTemplateReference)
    • JSONRPCError (use JSONRPCErrorResponse)
Types of changes
  •  Bug fix (non-breaking change which fixes an issue)
  •  New feature (non-breaking change which adds functionality)
  •  Breaking change (fix or feature that would cause existing functionality to change)
  •  Documentation update
Checklist
  •  I have read the MCP Documentation
  •  My code follows the repository's style guidelines
  •  New and existing tests pass locally
  •  I have added appropriate error handling
  •  I have added or updated documentation as needed
Additional context
  • Includes changesets to bump @modelcontextprotocol/{core,server,node,test-integration} after removal of deprecated APIs.
  • Migrates examples and tests to the register* APIs (e.g. examples/server/src/ssePollingExample.ts, server/node middleware tests, and integration tests).
@KKonstantinov
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🦋 Changeset detected
Latest commit: 43f9738
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 6 packages
NameType
@modelcontextprotocol/nodePatch
@modelcontextprotocol/test-integrationPatch
@modelcontextprotocol/serverPatch
@modelcontextprotocol/corePatch
@modelcontextprotocol/expressPatch
@modelcontextprotocol/honoPatch
Not sure what this means? Click here to learn what changesets are.
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@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1419

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1419

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1419

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1419

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1419

commit: 43f9738
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LGTM! Thanks for doing this, .tool() really needs to go :D
@felixweinberger
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`v2` - clean deprecated methods and exports by KKonstantinov · Pull Request #1419 · modelcontextprotocol/typescript-sdk · GitHub
Skip to content
v2 - clean deprecated methods and exports - #1419
Merged
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
Jan 23, 2026
Merged
v2 - clean deprecated methods and exports#1419
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
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Clean deprecated method signature and some exports previously used for backwards compatibility
Motivation and Context
  • This is a v2 cleanup that removes deprecated, backwards-compat registration APIs on McpServer (.tool, .prompt, .resource) and migrates usage to the explicit registerTool, registerPrompt, and registerResource APIs.
  • Simplifies the public API surface and avoids ambiguous overloads (particularly around tool schema vs annotations), while keeping the supported registration style consistent across tools/resources/prompts.
  • Removes deprecated @modelcontextprotocol/core exports/types that were retained as aliases during spec/API transitions.
How Has This Been Tested?
  • Updated unit and integration tests to use the new registration APIs.
  • Suggested local verification:

    • pnpm test:all
    • pnpm check:all
Breaking Changes
  • Removed deprecated McpServer.tool(), McpServer.prompt(), and McpServer.resource() methods. Use registerTool, registerPrompt, and registerResource instead.
  • Registration signatures are now options-object based:

    • Tools: registerTool(name, { description?, inputSchema?, outputSchema?, annotations?, execution? }, handler) (use {} when no options are needed).
    • Prompts: registerPrompt(name, { description?, argsSchema? }, handler) (use {} when no options are needed).
    • Resources: registerResource(name, uriOrTemplate, metadata, handler) (use {} when no metadata is needed).
  • Removed deprecated @modelcontextprotocol/core exports/types (update imports to the non-deprecated names):

    • isJSONRPCResponse (use isJSONRPCResultResponse / isJSONRPCResponseSchema as appropriate)
    • JSONRPCErrorSchema (use JSONRPCErrorResponseSchema)
    • isJSONRPCError (use isJSONRPCErrorResponse)
    • ResourceReferenceSchema / ResourceReference (use ResourceTemplateReferenceSchema / ResourceTemplateReference)
    • JSONRPCError (use JSONRPCErrorResponse)
Types of changes
  •  Bug fix (non-breaking change which fixes an issue)
  •  New feature (non-breaking change which adds functionality)
  •  Breaking change (fix or feature that would cause existing functionality to change)
  •  Documentation update
Checklist
  •  I have read the MCP Documentation
  •  My code follows the repository's style guidelines
  •  New and existing tests pass locally
  •  I have added appropriate error handling
  •  I have added or updated documentation as needed
Additional context
  • Includes changesets to bump @modelcontextprotocol/{core,server,node,test-integration} after removal of deprecated APIs.
  • Migrates examples and tests to the register* APIs (e.g. examples/server/src/ssePollingExample.ts, server/node middleware tests, and integration tests).
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Latest commit: 43f9738
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 6 packages
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@modelcontextprotocol/nodePatch
@modelcontextprotocol/test-integrationPatch
@modelcontextprotocol/serverPatch
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@modelcontextprotocol/expressPatch
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npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1419

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1419

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1419

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LGTM! Thanks for doing this, .tool() really needs to go :D
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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) {
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}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
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if (clean !== a.href) a.href = clean;
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if (node.tagName === 'A') cleanLinks();
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var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
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});
observer.observe(document.body, { childList: true, subtree: true });
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} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
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(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
`v2` - clean deprecated methods and exports by KKonstantinov · Pull Request #1419 · modelcontextprotocol/typescript-sdk · GitHub
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v2 - clean deprecated methods and exports - #1419
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KKonstantinov:feature/clean-deprecated-method-calls
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Merged
v2 - clean deprecated methods and exports#1419
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Clean deprecated method signature and some exports previously used for backwards compatibility
Motivation and Context
  • This is a v2 cleanup that removes deprecated, backwards-compat registration APIs on McpServer (.tool, .prompt, .resource) and migrates usage to the explicit registerTool, registerPrompt, and registerResource APIs.
  • Simplifies the public API surface and avoids ambiguous overloads (particularly around tool schema vs annotations), while keeping the supported registration style consistent across tools/resources/prompts.
  • Removes deprecated @modelcontextprotocol/core exports/types that were retained as aliases during spec/API transitions.
How Has This Been Tested?
  • Updated unit and integration tests to use the new registration APIs.
  • Suggested local verification:

    • pnpm test:all
    • pnpm check:all
Breaking Changes
  • Removed deprecated McpServer.tool(), McpServer.prompt(), and McpServer.resource() methods. Use registerTool, registerPrompt, and registerResource instead.
  • Registration signatures are now options-object based:

    • Tools: registerTool(name, { description?, inputSchema?, outputSchema?, annotations?, execution? }, handler) (use {} when no options are needed).
    • Prompts: registerPrompt(name, { description?, argsSchema? }, handler) (use {} when no options are needed).
    • Resources: registerResource(name, uriOrTemplate, metadata, handler) (use {} when no metadata is needed).
  • Removed deprecated @modelcontextprotocol/core exports/types (update imports to the non-deprecated names):

    • isJSONRPCResponse (use isJSONRPCResultResponse / isJSONRPCResponseSchema as appropriate)
    • JSONRPCErrorSchema (use JSONRPCErrorResponseSchema)
    • isJSONRPCError (use isJSONRPCErrorResponse)
    • ResourceReferenceSchema / ResourceReference (use ResourceTemplateReferenceSchema / ResourceTemplateReference)
    • JSONRPCError (use JSONRPCErrorResponse)
Types of changes
  •  Bug fix (non-breaking change which fixes an issue)
  •  New feature (non-breaking change which adds functionality)
  •  Breaking change (fix or feature that would cause existing functionality to change)
  •  Documentation update
Checklist
  •  I have read the MCP Documentation
  •  My code follows the repository's style guidelines
  •  New and existing tests pass locally
  •  I have added appropriate error handling
  •  I have added or updated documentation as needed
Additional context
  • Includes changesets to bump @modelcontextprotocol/{core,server,node,test-integration} after removal of deprecated APIs.
  • Migrates examples and tests to the register* APIs (e.g. examples/server/src/ssePollingExample.ts, server/node middleware tests, and integration tests).
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🦋 Changeset detected
Latest commit: 43f9738
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 6 packages
NameType
@modelcontextprotocol/nodePatch
@modelcontextprotocol/test-integrationPatch
@modelcontextprotocol/serverPatch
@modelcontextprotocol/corePatch
@modelcontextprotocol/expressPatch
@modelcontextprotocol/honoPatch
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@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1419

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1419

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1419

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1419

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1419

commit: 43f9738
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LGTM! Thanks for doing this, .tool() really needs to go :D
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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('^' + ".*" + '
`v2` - clean deprecated methods and exports by KKonstantinov · Pull Request #1419 · modelcontextprotocol/typescript-sdk · GitHub
Skip to content
v2 - clean deprecated methods and exports - #1419
Merged
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
Jan 23, 2026
Merged
v2 - clean deprecated methods and exports#1419
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
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Clean deprecated method signature and some exports previously used for backwards compatibility
Motivation and Context
  • This is a v2 cleanup that removes deprecated, backwards-compat registration APIs on McpServer (.tool, .prompt, .resource) and migrates usage to the explicit registerTool, registerPrompt, and registerResource APIs.
  • Simplifies the public API surface and avoids ambiguous overloads (particularly around tool schema vs annotations), while keeping the supported registration style consistent across tools/resources/prompts.
  • Removes deprecated @modelcontextprotocol/core exports/types that were retained as aliases during spec/API transitions.
How Has This Been Tested?
  • Updated unit and integration tests to use the new registration APIs.
  • Suggested local verification:

    • pnpm test:all
    • pnpm check:all
Breaking Changes
  • Removed deprecated McpServer.tool(), McpServer.prompt(), and McpServer.resource() methods. Use registerTool, registerPrompt, and registerResource instead.
  • Registration signatures are now options-object based:

    • Tools: registerTool(name, { description?, inputSchema?, outputSchema?, annotations?, execution? }, handler) (use {} when no options are needed).
    • Prompts: registerPrompt(name, { description?, argsSchema? }, handler) (use {} when no options are needed).
    • Resources: registerResource(name, uriOrTemplate, metadata, handler) (use {} when no metadata is needed).
  • Removed deprecated @modelcontextprotocol/core exports/types (update imports to the non-deprecated names):

    • isJSONRPCResponse (use isJSONRPCResultResponse / isJSONRPCResponseSchema as appropriate)
    • JSONRPCErrorSchema (use JSONRPCErrorResponseSchema)
    • isJSONRPCError (use isJSONRPCErrorResponse)
    • ResourceReferenceSchema / ResourceReference (use ResourceTemplateReferenceSchema / ResourceTemplateReference)
    • JSONRPCError (use JSONRPCErrorResponse)
Types of changes
  •  Bug fix (non-breaking change which fixes an issue)
  •  New feature (non-breaking change which adds functionality)
  •  Breaking change (fix or feature that would cause existing functionality to change)
  •  Documentation update
Checklist
  •  I have read the MCP Documentation
  •  My code follows the repository's style guidelines
  •  New and existing tests pass locally
  •  I have added appropriate error handling
  •  I have added or updated documentation as needed
Additional context
  • Includes changesets to bump @modelcontextprotocol/{core,server,node,test-integration} after removal of deprecated APIs.
  • Migrates examples and tests to the register* APIs (e.g. examples/server/src/ssePollingExample.ts, server/node middleware tests, and integration tests).
@KKonstantinov
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🦋 Changeset detected
Latest commit: 43f9738
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 6 packages
NameType
@modelcontextprotocol/nodePatch
@modelcontextprotocol/test-integrationPatch
@modelcontextprotocol/serverPatch
@modelcontextprotocol/corePatch
@modelcontextprotocol/expressPatch
@modelcontextprotocol/honoPatch
Not sure what this means? Click here to learn what changesets are.
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npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1419

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1419

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1419

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1419

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1419

commit: 43f9738
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LGTM! Thanks for doing this, .tool() really needs to go :D
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
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';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
})();
`v2` - clean deprecated methods and exports by KKonstantinov · Pull Request #1419 · modelcontextprotocol/typescript-sdk · GitHub
Skip to content
v2 - clean deprecated methods and exports - #1419
Merged
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
Jan 23, 2026
Merged
v2 - clean deprecated methods and exports#1419
felixweinberger merged 7 commits into
modelcontextprotocol:mainfrom 
KKonstantinov:feature/clean-deprecated-method-calls
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Clean deprecated method signature and some exports previously used for backwards compatibility
Motivation and Context
  • This is a v2 cleanup that removes deprecated, backwards-compat registration APIs on McpServer (.tool, .prompt, .resource) and migrates usage to the explicit registerTool, registerPrompt, and registerResource APIs.
  • Simplifies the public API surface and avoids ambiguous overloads (particularly around tool schema vs annotations), while keeping the supported registration style consistent across tools/resources/prompts.
  • Removes deprecated @modelcontextprotocol/core exports/types that were retained as aliases during spec/API transitions.
How Has This Been Tested?
  • Updated unit and integration tests to use the new registration APIs.
  • Suggested local verification:

    • pnpm test:all
    • pnpm check:all
Breaking Changes
  • Removed deprecated McpServer.tool(), McpServer.prompt(), and McpServer.resource() methods. Use registerTool, registerPrompt, and registerResource instead.
  • Registration signatures are now options-object based:

    • Tools: registerTool(name, { description?, inputSchema?, outputSchema?, annotations?, execution? }, handler) (use {} when no options are needed).
    • Prompts: registerPrompt(name, { description?, argsSchema? }, handler) (use {} when no options are needed).
    • Resources: registerResource(name, uriOrTemplate, metadata, handler) (use {} when no metadata is needed).
  • Removed deprecated @modelcontextprotocol/core exports/types (update imports to the non-deprecated names):

    • isJSONRPCResponse (use isJSONRPCResultResponse / isJSONRPCResponseSchema as appropriate)
    • JSONRPCErrorSchema (use JSONRPCErrorResponseSchema)
    • isJSONRPCError (use isJSONRPCErrorResponse)
    • ResourceReferenceSchema / ResourceReference (use ResourceTemplateReferenceSchema / ResourceTemplateReference)
    • JSONRPCError (use JSONRPCErrorResponse)
Types of changes
  •  Bug fix (non-breaking change which fixes an issue)
  •  New feature (non-breaking change which adds functionality)
  •  Breaking change (fix or feature that would cause existing functionality to change)
  •  Documentation update
Checklist
  •  I have read the MCP Documentation
  •  My code follows the repository's style guidelines
  •  New and existing tests pass locally
  •  I have added appropriate error handling
  •  I have added or updated documentation as needed
Additional context
  • Includes changesets to bump @modelcontextprotocol/{core,server,node,test-integration} after removal of deprecated APIs.
  • Migrates examples and tests to the register* APIs (e.g. examples/server/src/ssePollingExample.ts, server/node middleware tests, and integration tests).
@KKonstantinov
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🦋 Changeset detected
Latest commit: 43f9738
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 6 packages
NameType
@modelcontextprotocol/nodePatch
@modelcontextprotocol/test-integrationPatch
@modelcontextprotocol/serverPatch
@modelcontextprotocol/corePatch
@modelcontextprotocol/expressPatch
@modelcontextprotocol/honoPatch
Not sure what this means? Click here to learn what changesets are.
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@modelcontextprotocol/client
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/client@1419

@modelcontextprotocol/server
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/server@1419

@modelcontextprotocol/express
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/express@1419

@modelcontextprotocol/hono
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/hono@1419

@modelcontextprotocol/node
npm i https://pkg.pr.new/modelcontextprotocol/typescript-sdk/@modelcontextprotocol/node@1419

commit: 43f9738
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marked this pull request as draft
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LGTM! Thanks for doing this, .tool() really needs to go :D
@felixweinberger
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merged commit dcf708d
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modelcontextprotocol:mainJan 23, 2026

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@KKonstantinov@felixweinberger