AI Coding Live News — Real-Time 𝕏/Twitter Updates & Breakthroughs

Prefect / FastMCP@PrefectHQ·Collected 40d ago

👀75

🔥89

FastMCP 4.0.10: task tools stay registered behind Search/CodeMode; cross-tool call_tool returns real results

Prefect shipped FastMCP v4.0.10 (2026-09-25, PyPI fastmcp 4.0.10, “Inside Job”): task-enabled tools remain registered with the task backend even when hidden by Search transforms or CodeMode, and calls via ctx.fastmcp.call_tool() (including the search call_tool proxy and CodeMode execute) now return real results instead of empty task receipts. Also tolerates stdio transport construction failures in __del__. Docs at gofastmcp.com.

Key Takeaways

Shipped: FastMCP v4.0.10 / PyPI fastmcp 4.0.10
Tasks: tools hidden by Search/CodeMode still register with the task backend (#5262)
Calls: ctx.fastmcp.call_tool() / CodeMode execute return real results, not empty task receipts (#5275)
Stdio: __del__ tolerates failed transport construction (#5256)
Docs: gofastmcp.com + repo changelog updated for v4.0.10

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Linked Models & Agents:

🌐 prefect

#FastMCP#MCP#CodeMode#Search transforms#task tools#Prefect#Python

Marwan Atef@Marwan_3atef·Collected 60d ago

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View on 𝕏 ↗

LangChain folds MCP into the main package: pip install "langchain[mcp]" for FastMCP + elicitation

LangChain merged MCP into the main package: pip install "langchain[mcp]" exposes langchain.mcp on FastMCP with old+new spec negotiation, tool-list caching, and elicitation as LangGraph interrupts—no separate langchain-mcp-adapters install. Python ships today, TypeScript next; still beta.

Key Takeaways

Install: pip install "langchain[mcp]" — no separate langchain-mcp-adapters.
Features: FastMCP, spec negotiation, tool-list caching, elicitation as LangGraph interrupts.
Status: Python first, TypeScript next; still beta.

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Linked Models & Agents:

🌐 langchain

#LangChain#MCP#FastMCP#LangGraph#Elicitation#Python#Beta