Anthropic updates Claude Opus 4.7 system prompt with new tools and tighter safety guidance

Posted on by CurrentLens in Models
Anthropic updates Claude Opus 4.7 system prompt with new tools and tighter safety guidance

Photo by Juan Pablo on Unsplash

The April 16, 2026 prompt diff shows renamed platform branding, broader tool mentions, a new child-safety tag, and guidance to avoid pressuring users.

AI Quick Take

  • Opus 4.7's prompt adds 'Claude in Powerpoint', renames the developer platform to 'Claude Platform', and updates the list of tools.
  • Child-safety instructions were expanded and Claude is directed to avoid 'pushy' follow-ups and to act rather than over-clarify on minor missing details.

Anthropic updated the Claude Opus 4.7 system prompt, and a public diff reviewed by Simon Willison highlights several behavioral and tooling changes compared with Opus 4.6. The April 16, 2026 prompt renames the 'developer platform' to 'Claude Platform', expands the list of Claude tools to include a newly mentioned 'Claude in Powerpoint' agent, and states that Claude Cowork can use these tools. It also adds a prominentsection and new guidance on conversational style.

The child-safety edits tighten the assistant's handling of flagged requests: once Claude refuses a request for child-safety reasons, the prompt instructs that subsequent requests in the same conversation must be treated with "extreme caution." Separately, the prompt tells Claude to avoid being "pushy"-if a user indicates they want to end the interaction, Claude should respect that choice rather than soliciting another turn. A new acting_vs_clarifying passage directs the assistant to try a reasonable completion when a request omits minor details and to ask clarifying questions only when the missing information genuinely prevents an answer.

Because system prompts shape runtime behavior across deployments, these edits matter operationally even though they are not model-weight changes. Explicit tool mentions hint at integrations that developers and enterprise customers may soon see surface in the Claude Platform, while stricter child-safety instructions and changed clarification behavior will affect moderation, QA, and user experience. Readers should watch for follow-up documentation, behavioral evaluations, and any rollout notes that confirm how these prompt changes translate into live responses and tool availability.