Issues

• [v2] Expose the JSON-RPC request id to callers of request() (onRequestId)

  modelcontextprotocol/typescript-sdk#3061 · Filter by author DanielSLew opened on Oct 21, 2026

• [v2] Expose per-request stream end (onRequestStreamEnd) in RequestOptions for custom long-lived requests

  modelcontextprotocol/typescript-sdk#3060 · Filter by author DanielSLew opened on Oct 21, 2026

• McpServer.connect() Appears to Return null/undefined with Per-Request Server Instantiation and await; Leads to "Method not found"

  v1
  modelcontextprotocol/typescript-sdk#3058 · Filter by author M-ldhfodh opened on Oct 20, 2026

• [v2] Streamable HTTP client never re-initializes after server 404 "session not found" — needs maintainer call on era architecture

  v1v2
  modelcontextprotocol/typescript-sdk#3056 · Filter by author xyonium opened on Oct 20, 2026
  1

• Streamable HTTP: the POST for a cancelled request never settles

  v1v2
  modelcontextprotocol/typescript-sdk#3053 · Filter by author dannote opened on Oct 19, 2026
  4

• [v2] e2e protocol:timeout:max-total is flaky over SSE: fake timers advance before the request reaches the server

  v1v2
  modelcontextprotocol/typescript-sdk#3045 · Filter by author JQ100 opened on Oct 18, 2026

• [v1.x] Backport #2654: notifications/cancelled with requestId: 0 is ignored, so the first server→client request cannot be cancelled (still in 1.32.1)

  v1
  modelcontextprotocol/typescript-sdk#3043 · Filter by author mihai-r-lupu opened on Oct 17, 2026
  1

• checkResourceAllowed rejects a protected resource that differs from the server URL only by a trailing slash (one direction only)

  v1v2
  modelcontextprotocol/typescript-sdk#3041 · Filter by author magnew opened on Oct 16, 2026
  2

• [v2] Last-Event-ID resumability on modern createMcpHandler path

  v2
  modelcontextprotocol/typescript-sdk#3037 · Filter by author JayDS22 opened on Oct 15, 2026
  1

• [v2] createMcpHandler maxSubscriptions is handler-wide, no per-session cap option

  v2
  modelcontextprotocol/typescript-sdk#3036 · Filter by author JayDS22 opened on Oct 15, 2026
  4

• [v2] ClientCredentialsProvider cannot sign in: RFC 8414 metadata without authorization_endpoint is refused, though a client-credentials-only server has none

  v1v2
  modelcontextprotocol/typescript-sdk#3033 · Filter by author joeblew999 opened on Oct 15, 2026

• [v2] outputSchema whose root is a $ref (zod .meta({ id })) is taken for a non-object: on 2025 connections an object result is wrapped as { result }

  v2
  modelcontextprotocol/typescript-sdk#3032 · Filter by author joeblew999 opened on Oct 15, 2026
  1

• Add file parse example server (PDF DOCX XLSX without binaries)

  v1v2
  modelcontextprotocol/typescript-sdk#3031 · Filter by author TejasS1233 opened on Oct 15, 2026

• StreamableHTTPServerTransport: option to send SSE keepalive comments on open streams

  v1
  modelcontextprotocol/typescript-sdk#3027 · Filter by author 0xdeafcafe opened on Oct 14, 2026

• Client DPoP: support external signers (non-CryptoKey keys) in DpopSession

  v2
  modelcontextprotocol/typescript-sdk#3026 · Filter by author figitaki opened on Oct 14, 2026

• [v2] Browser-hosted MCP servers fail in Firefox after request-body reader changes

  v1v2
  modelcontextprotocol/typescript-sdk#3025 · Filter by author mayurj747 opened on Oct 14, 2026

• use of @hono/node-server v1 results in GHSA-rmxm-3fg6-px4f

  v2
  modelcontextprotocol/typescript-sdk#3022 · Filter by author andyedwardsibm opened on Oct 14, 2026
  1

• Public inbound-processing completion seam for reusable bounded admission

  v1v2
  modelcontextprotocol/typescript-sdk#3020 · Filter by author servrox opened on Oct 14, 2026

• McpServer.registerTool rejects tool names inherited from Object.prototype (constructor, toString, __proto__)

  v1v2
  modelcontextprotocol/typescript-sdk#3019 · Filter by author ocdejong opened on Oct 14, 2026
  2

• Progress notifications are dropped when they arrive in the same read as their request's response

  v1v2
  modelcontextprotocol/typescript-sdk#3018 · Filter by author ot-of-fincra opened on Oct 14, 2026
  1

• AjvJsonSchemaValidator: allow ajv options (e.g. useDefaults) without giving up the per-dialect engine choice

  v2
  modelcontextprotocol/typescript-sdk#3017 · Filter by author marcusschiesser opened on Oct 14, 2026

• [v2] docs:api fails on native Windows with backslash entry-point globs

  v2
  modelcontextprotocol/typescript-sdk#3015 · Filter by author jpdefo opened on Oct 14, 2026

• [v2] Link targets for the "AuthInfo" interface are improper

  v2
  modelcontextprotocol/typescript-sdk#3012 · Filter by author mikecat opened on Oct 13, 2026
  1

• Low-level Server.setRequestHandler strips unknown tools/call params members before any author schema can preserve them

  v2
  modelcontextprotocol/typescript-sdk#3008 · Filter by author kesslerio opened on Oct 12, 2026
  3

• UriTemplate treats RFC 6570 prefix modifiers as variable-name text and drops scalar values

  v1v2
  modelcontextprotocol/typescript-sdk#3000 · Filter by author jayfeng7 opened on Oct 11, 2026
  1