Claude Code 2.1.287 changelog: side-agent 'You should know', MCP URL prompts, OTel prompt_text
ClaudeCodeLog · x · 2026-10-02
Full Claude Code CLI 2.1.287 changelog highlights:
- Claude Mods: plugins may now modify deeper behavior
- You should know: opt-in builtin plugin where a side agent watches your session and flags things you or Claude might miss — enable via /plugin enable cc-plugin-you-should-know@builtin (first-party sessions with telemetry on)
- New n:<text> filter in the agents view matching session names/tasks, including collapsed sections
- OpenTelemetry userprompt event gains a prompttext field for backends nesting dotted keys — mask it wherever you mask prompt
- URL prompts from MCP servers on the 2025-11-25 protocol (e.g. sign-in); if a server breaks after update, add "bareElicitationCapability": true to its config
Related event: Claude Code 2.1.287 Ships Claude Mods and 106 Changes(3 posts)→
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