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Tag: claude-code

106 posts · Page 5 of 11

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.

2026-07-23 claude-code ai-agents subagents

Claude Code 2.1.218 Runs /code-review as a Background Subagent

Version 2.1.218 moves /code-review off your main conversation into a background subagent, and fork-context skills now background by default. Here is what changed and how to opt out.

2026-07-22 claude-code ai-agents subagents

Claude Code 2.1.213 Puts Hard Caps on Runaway Subagent Fleets

Version 2.1.213 caps concurrent subagents and stops nested spawns by default, building on the per-session limits from 2.1.212. Here are the new defaults and env vars.

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.

2026-07-17 errors mcp claude-code

Fix: all MCP servers fail to load after one malformed-JSON syntax error in the config

One trailing comma or unescaped Windows path in your MCP config makes every server vanish, not just the broken one. Validate the JSON, fix the five usual suspects, restart.

2026-07-14 claude-code ai-agents vim

Claude Code 2.1.208 Lets You Remap jj to Escape in Vim Insert Mode

Claude Code 2.1.208 (July 14, 2026) adds vimInsertModeRemaps, so vim users can map two-key insert-mode sequences like jj to Escape in the prompt editor. Plus a screen reader mode and a corporate process wrapper.

2026-07-13 claude-code ai-agents cli

Claude Code Auto Mode Now Catches the Empty-Variable rm -rf

Claude Code's Week 28 releases (v2.1.202-v2.1.206, July 6-10 2026) teach auto mode to pause before an rm -rf whose path came from a variable that expanded to nothing, closing the classic rm -rf / footgun.