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Tag: claude-code

93 posts · Page 4 of 10

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.

2026-07-09 claude-code ai-agents llm

VS Code 1.128 Adds Multi-Chat Claude Agent-Host Sessions

VS Code 1.128 (July 8, 2026) lets one Claude agent-host session hold several parallel chats, each with its own history, title, and model. Here is what chat.agentHost.enabled actually unlocks and how the quick-chat and BYOK pieces fit.

2026-07-08 claude-code ai-agents llm

Claude Sonnet 5 Is the New Claude Code Default: Recount Your Token Budgets

Claude Sonnet 5 (claude-sonnet-5) shipped June 30, 2026 and now backs the 'sonnet' alias in Claude Code. Its new tokenizer emits about 30% more tokens for the same text, so cost estimates and max_tokens limits tuned for Sonnet 4.6 need a recount.

2026-07-06 claude-code ai-agents cli

Claude Code 2.1.198 Runs Subagents in the Background by Default

Claude Code v2.1.198 (July 1, 2026) flips subagents to background execution by default, so the main agent keeps working while they run, and background agents that touch code now auto-commit, push, and open a draft PR when they finish.