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Fastmcp tool parameter parsing type error

bugSomething isn't workingSomething isn't working

P1Significant bug affecting many users, highly requested featureSignificant bug affecting many users, highly requested feature

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

Status: Not planned (skipped).

#381 In modelcontextprotocol/python-sdk;

· by weester-yan was closed on Jul 24, 2026

fix: prevent process hanging in stdio_client context manager

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 361

#361 In modelcontextprotocol/python-sdk;

· by hwaxxer was closed on May 8, 2025

Add optional headers argument to websocket transport

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 455

#455 In modelcontextprotocol/python-sdk;

· by andrewmjc was closed on Jul 9, 2025

MCP enable over UNIX socket

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 430

#430 In modelcontextprotocol/python-sdk;

· by johnandersen777 was closed on May 23, 2025

Fix: Use absolute path to uv executable in Claude Desktop config

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 440

#440 In modelcontextprotocol/python-sdk;

· by arcAman07 was closed on May 8, 2025

Fix: Use absolute path to uv executable when installing MCP server (closes #478)

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 481

#481 In modelcontextprotocol/python-sdk;

· by rossheat was closed on May 8, 2025

fix: Update @mcp.resource to use function documentation as default descrip…

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 489

#489 In modelcontextprotocol/python-sdk;

· by jingyugao was closed on May 15, 2025

fix: override input with json.loads only when output value is valid

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 350

#350 In modelcontextprotocol/python-sdk;

· by omerc7 was closed on Jul 9, 2025

Chatbot example: clean up servers in correct order

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 353

#353 In modelcontextprotocol/python-sdk;

· by clareliguori was closed on May 23, 2025

feat(client/sse): allow to set the timeout of POST /messages

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 340

#340 In modelcontextprotocol/python-sdk;

· by RockChinQ was closed on Jul 9, 2025

Keep GitHub Actions up to date with GitHub's Dependabot

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 517

#517 In modelcontextprotocol/python-sdk;

· by cclauss was closed on May 23, 2025

fix: implemented exception handling for client indefinite blocks

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 500

#500 In modelcontextprotocol/python-sdk;

· by kavinkumar807 was closed on Jul 9, 2025

llamallama-3.2-90b-vision-preview is deprecated

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 523

#523 In modelcontextprotocol/python-sdk;

· by Arash-IND was closed on May 23, 2025

Python lint: Ruff rules for pylint and code complexity

needs more workNot ready to be merged yet, needs additional follow-up from the author(s).Not ready to be merged yet, needs additional follow-up from the author(s).

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 525

#525 In modelcontextprotocol/python-sdk;

· by cclauss was closed on Sep 5, 2025

Added support for raw request injection in RequestContext.

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 380

#380 In modelcontextprotocol/python-sdk;

· by ylassoued was closed on May 28, 2025

Fix setup instructions for Claud and MCP

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 425

#425 In modelcontextprotocol/python-sdk;

· by evgenyneu was closed on Jul 9, 2025

feat: add message to ProgressNotification

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 435

#435 In modelcontextprotocol/python-sdk;

· by aksheyd was closed on May 13, 2025

send errors to pending requests if server closes

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 333

#333 In modelcontextprotocol/python-sdk;

· by mroch was closed on May 27, 2025

enable http headers in sse in the context

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 216

#216 In modelcontextprotocol/python-sdk;

· by abdullahkady was closed on May 28, 2025

fix: enable HTTP redirect handling in SSE client

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 284

#284 In modelcontextprotocol/python-sdk;

· by eastlondoner was closed on May 8, 2025

fix: Add checks and better error messages on server object for mcp run

Status: Merged (completed).

modelcontextprotocol/python-sdknumber 297

#297 In modelcontextprotocol/python-sdk;

· by john0312 was closed on May 13, 2025

fix for SSE URL handling when a server name is specified

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 597

#597 In modelcontextprotocol/python-sdk;

· by aarora79 was closed on May 7, 2025

Support Disabling SSL verification for testing

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 415

#415 In modelcontextprotocol/python-sdk;

· by yfaney was closed on May 23, 2025

fix: enables context injection into resources

needs more workNot ready to be merged yet, needs additional follow-up from the author(s).Not ready to be merged yet, needs additional follow-up from the author(s).

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 413

#413 In modelcontextprotocol/python-sdk;

· by fubuloubu was closed on Sep 26, 2025

Preserve non-ASCII characters in JSON output for better multilingual support

Status: Closed (abandoned).

modelcontextprotocol/python-sdknumber 580

#580 In modelcontextprotocol/python-sdk;

· by VvvvvGH was closed on May 23, 2025