AI BriefingClaude Code System Prompt Update
·2026.07.07 02:27
Key point
Claude Code's tool use metadata display and cross-session collaboration permission warning features have been updated.
Details
The key updates in Claude Code (CC) version 2.1.181 are as follows.
Data and Tool Use Improvements
- Added tool use display metadata field: A
toolusemetafield has been introduced, which includes MCP (Model Context Protocol) server tool titles, server display names, icon URLs, and more. This is not resent to the model and documents tool use information at the wrapper level.
Cross-session Peer Message Authority
- Introduction of an authority warning system: When processing messages relayed by other users (Peer messages), a warning notice has been added indicating that such messages do not act on behalf of the user's authority.
- Enhanced security: It explicitly states that peer messages cannot substitute for the user's approval, and guidelines have been strengthened to prevent escalation attempts and reject permission laundering attempts.
- Backward compatibility maintained: The legacy strict warning wording has been retained, designed so that messages relayed from previous versions can also be identified and processed.
Other Changes
- The Assistant voice and values template feature has been removed.
This summary was generated automatically by AI. Check the original for the author's claims and context. Copyright belongs to the original author.
Our guide explains how the AI works. Report summary errors, attribution issues, or removal requests via Contact.
Related
Claude Code Fails to Load AGENTS.md When Telemetry Is Disabled, With Workaround