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Tag: mcp

64 posts · Page 2 of 7

2026-07-31 claude-code mcp ai-agents

Fix: A Long MCP Tool Call Gets Auto-Backgrounded After Two Minutes Mid-Task

Claude Code 2.1.212+ moves any main-conversation MCP tool call still running at two minutes into a background task. Set CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS=0 to stop it, raise the threshold to move the line, or send progress notifications from the server.

2026-07-30 errors mcp claude-code

Fix: .mcp.json servers never start because the workspace is marked untrusted

Project MCP servers stuck at Pending approval are not misconfigured. Run claude interactively in the folder, accept the workspace trust dialog, then approve the servers.

2026-07-29 errors mcp claude-code

Fix: a Windows path in your agent config silently turns into a tab, a newline, or a Chinese character

Folder names starting with t, b, n, r or u make a Windows path parse cleanly as JSON and still resolve wrong. Use forward slashes or double every backslash.

2026-07-29 mcp dotnet csharp

MCP C# SDK 2.0 Ships: Stateless by Default and MCP9005 on Your Old Code

ModelContextProtocol 2.0.0 landed on 2026-07-28 with the stateless HTTP transport on by default, Multi Round-Trip Requests replacing server-initiated elicitation, and an analyzer warning on ElicitAsync and SampleAsync.

2026-07-28 mcp ai-agents http

GitHub's MCP Server Went Stateless and Deleted Its Redis Session Store

On 2026-07-23 GitHub shipped the MCP 2026-07-28 revision ahead of the spec date. The notable part is the subtraction: no initialize handshake, no Mcp-Session-Id, no Redis.

2026-07-26 ai-agents claude-code cursor

How to Lock Down a Coding Agent's Network Egress With a Strict Host Allowlist

Claude Code, Cursor, and the GitHub Copilot coding agent all ship host allowlists for outbound traffic, and all three default to something looser than you want. The exact settings keys, a policy you can copy, and the four surfaces the allowlist does not cover.

2026-07-25 migration mcp ai-agents

Migrate an MCP Server from SSE to Streamable HTTP (2026 Checklist)

The legacy HTTP+SSE transport used two endpoints and a sticky connection. Streamable HTTP uses one. Here is the step-by-step migration for the TypeScript and Python SDKs, the client configs you have to repoint, and the proxy buffering gotcha that makes the new endpoint look broken.

2026-07-22 claude-code ai-agents context-window

Fix: Claude Code Autocompact Thrashing on a Large File or Tool Output

Claude Code compacts, then a single oversized file read or tool result immediately refills the window and it compacts again. Drop the item with /clear, read files in slices, and force big output to disk.

2026-07-20 errors mcp claude-code

Fix: MCP Server Throws "fetch is not defined" and EBADENGINE on Node.js Below 18

An MCP server on Node 16 warns EBADENGINE at install, then dies with 'fetch is not defined' on the first tool call. Upgrade to Node 18+ (20+ for the 2.x SDK) or polyfill the web globals.

2026-07-19 errors mcp claude-code

Fix: Claude Code misreads an MCP server's stderr startup message as an error

Claude Code logs every MCP server stderr line at [ERROR] and marks working servers as failed. If your tools still run, it is cosmetic. Here is how to confirm it and quiet the noise.