Claude Code v2.1.212: /fork now spawns a background session
The latest Claude Code patch changes what /fork does. It now copies the conversation into a new background session with its own entry in the agent list, while the old internal subagent moves to /subtask.
• MCP calls that run longer than 2 minutes automatically move to the background so the session stays usable. The threshold is configurable via CLAUDE_CODE_MCP_AUTO_BACKGROUND_MS. • WebSearch now has a per-session cap, defaulting to 200, set through CLAUDE_CODE_MAX_WEB_SEARCHES_PER_SESSION • Subagent launches are capped too, defaulting to 200 and reset with /clear • Running /resume as an agent opens a list of past sessions, including ones removed from the main list • Fixed a bug where plan mode ran file-modifying Bash commands without asking for permission
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Every Claude Code system prompt is now public, tracked across 238 versions
Piebald published a repo with every Claude Code system prompt and its token count, tracked across 238 versions back to v2.0.14 and updated within minutes of each release. It’s over 500 entries, pulled from the compiled npm build so they match what actually runs.
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