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Allow explicit message_url override in mcp.client.sse.sse_client

Status: Open.

#2255 In modelcontextprotocol/python-sdk;

· tonybhaskar opened on Mar 9, 2026

pywin32 installation fails on Windows — hard dep only needed for client stdio, but pulled in for all users via eager import in __init__.py

Status: Open.

#2233 In modelcontextprotocol/python-sdk;

· sergeykad opened on Mar 6, 2026

Stdio transport: MCP server process survives parent death (stdin EOF not causing shutdown)

Status: Open.

#2231 In modelcontextprotocol/python-sdk;

· arcivanov opened on Mar 6, 2026

Bug: validate_scope rejects client scopes when required scopes in None

authIssues and PRs related to Authentication / OAuthIssues and PRs related to Authentication / OAuth

bugSomething isn't workingSomething isn't working

P2Moderate issues affecting some users, edge cases, potentially valuable featureModerate issues affecting some users, edge cases, potentially valuable feature

ready for workEnough information for someone to start working onEnough information for someone to start working on

Status: Open.

#2216 In modelcontextprotocol/python-sdk;

· nik1097 opened on Mar 5, 2026

get_access_token() returns stale token in stateful streamable-HTTP sessions

authIssues and PRs related to Authentication / OAuthIssues and PRs related to Authentication / OAuth

bugSomething isn't workingSomething isn't working

v2Ideas, requests and plans for v2 of the SDK which will incorporate major changes and fixesIdeas, requests and plans for v2 of the SDK which will incorporate major changes and fixes

Status: Open.

#2208 In modelcontextprotocol/python-sdk;

· maxisbey opened on Mar 4, 2026

Type the MCPServer handler pipeline: tool/resource/prompt return types

enhancementRequest for a new feature that's not currently supportedRequest for a new feature that's not currently supported

v2Ideas, requests and plans for v2 of the SDK which will incorporate major changes and fixesIdeas, requests and plans for v2 of the SDK which will incorporate major changes and fixes

Status: Open.

#2202 In modelcontextprotocol/python-sdk;

· maxisbey opened on Mar 2, 2026

Add Tasks support to MCPServer

enhancementRequest for a new feature that's not currently supportedRequest for a new feature that's not currently supported

v2Ideas, requests and plans for v2 of the SDK which will incorporate major changes and fixesIdeas, requests and plans for v2 of the SDK which will incorporate major changes and fixes

Status: Open.

#2201 In modelcontextprotocol/python-sdk;

· maxisbey opened on Mar 2, 2026

MCPServer handlers should raise exceptions, not return error objects

enhancementRequest for a new feature that's not currently supportedRequest for a new feature that's not currently supported

v2Ideas, requests and plans for v2 of the SDK which will incorporate major changes and fixesIdeas, requests and plans for v2 of the SDK which will incorporate major changes and fixes

Status: Open.

#2153 In modelcontextprotocol/python-sdk;

· maxisbey opened on Feb 27, 2026

Active Streamable HTTP sessions are not terminated during shutdown

bugSomething isn't workingSomething isn't working

P2Moderate issues affecting some users, edge cases, potentially valuable featureModerate issues affecting some users, edge cases, potentially valuable feature

ready for workEnough information for someone to start working onEnough information for someone to start working on

Status: Open.

#2150 In modelcontextprotocol/python-sdk;

· emmahoggan opened on Feb 26, 2026

Add wildcard pattern support for allowed_hosts in transport security

enhancementRequest for a new feature that's not currently supportedRequest for a new feature that's not currently supported

needs confirmationNeeds confirmation that the PR is actually required or needed.Needs confirmation that the PR is actually required or needed.

Status: Open.

#2141 In modelcontextprotocol/python-sdk;

· enkidulan opened on Feb 25, 2026

Public API for runtime handler registration/deregistration on low-level Server

enhancementRequest for a new feature that's not currently supportedRequest for a new feature that's not currently supported

v2Ideas, requests and plans for v2 of the SDK which will incorporate major changes and fixesIdeas, requests and plans for v2 of the SDK which will incorporate major changes and fixes

Status: Open.

#2135 In modelcontextprotocol/python-sdk;

· maxisbey opened on Feb 24, 2026

Allow OAuthClientProvider to accept a pre-configured auth server URL

authIssues and PRs related to Authentication / OAuthIssues and PRs related to Authentication / OAuth

enhancementRequest for a new feature that's not currently supportedRequest for a new feature that's not currently supported

needs confirmationNeeds confirmation that the PR is actually required or needed.Needs confirmation that the PR is actually required or needed.

Status: Open.

#2121 In modelcontextprotocol/python-sdk;

· martimfasantos opened on Feb 21, 2026