Fix: MCP error -32000: Connection closed in Claude Code
MCP error -32000 means your MCP server process exited before the handshake finished. Fix the missing binary, the Windows cmd /c wrap, the event-loop exit, and the startup race.
Tag: mcp
83 posts · Page 6 of 9
How to add policy enforcement and audit logging to a Microsoft Agent Framework agent
Wire the Agent Governance Toolkit into a Microsoft Agent Framework 1.0 agent so every tool call is checked against a YAML policy and written to a tamper-evident audit trail. Full C# middleware, policy file, and a hash-chained audit sink.
Cursor 3.9 Bundles Your Agent Setup Into Portable Plugins
Cursor 3.9 ships a plugin system and a unified Customize page so skills, rules, MCP servers, commands, and hooks travel together as one versioned unit.
The Binlog MCP Server Lets an AI Read Your MSBuild Logs
Microsoft shipped Microsoft.AITools.BinlogMcp on 2026-06-17, an MCP server that exposes 15 tools so Claude or Copilot can diagnose build failures and slow targets straight from a .binlog file.
How to Gate Which Cursor SDK Tool Calls Run Automatically With Auto-Review and permissions.json
By default a local Cursor SDK agent runs every tool call without asking. Set local.autoReview to route Shell, MCP, and Fetch calls through the classifier, then steer it with the autoRun block in permissions.json. With code, the three-step evaluation order, and why none of it is a security boundary.
How to Persist Cursor SDK Agent State Across Restarts (SQLite vs JSONL vs a Custom LocalAgentStore)
The Cursor SDK already persists agent state to disk so Agent.resume() can pick a conversation back up after a crash. This walks the SqliteLocalAgentStore default, the JsonlLocalAgentStore you can commit to git, and how to implement the LocalAgentStore interface for Postgres, Redis, or an in-memory CI store.
How to Expose Your Own Functions to a Cursor SDK Agent With local.customTools (Instead of a Separate MCP Server)
Pass local.customTools to a Cursor SDK agent and the model calls your in-process functions through the built-in custom-user-tools MCP server. No stdio handshake, no separate process, no transport bugs. Local agents only: cloud agents throw ConfigurationError.
GitHub Copilot SDK Hits GA: Embed Copilot's Agent Runtime in Your Own C# Apps
At Build 2026 GitHub shipped Copilot SDK 1.0 GA with a first-class .NET package. You can now drive the same planning, tool-calling, and multi-turn agent runtime from C# code, BYOK included.
Microsoft Agent Framework vs LangChain vs LlamaIndex in 2026
All three hit 1.0. Pick Microsoft Agent Framework if you live in Azure and .NET, LangChain/LangGraph for vendor-neutral graph orchestration, LlamaIndex for retrieval-grounded agents.
MCP vs OpenAPI Plugins vs Custom Tool Calling for AI Agents: Which Should You Pick in 2026?
Use custom tool calling for one app you own end to end, MCP for any integration you want reused across Claude Code, Cursor, and ChatGPT, and OpenAPI plugins only as a bridge when you already have a spec. MCP is the cross-client standard in 2026; plugins are legacy.