Rapid Evolution! The Leak of Claude Opus 4.7 Reveals the Full Picture of “Autonomous Agents”

📰 News Overview

• System Prompt Update for the Latest Model Opus 4.7: The internal instructions (system prompt) of Claude.ai underwent significant changes from 4.6 in the release of Opus 4.7 on April 16, 2026.
• Clarification of Autonomous Agent Functions: A group of agents that autonomously operate Chrome, Excel, and PowerPoint has been officially listed as tools.
• Paradigm Shift to “Action-First”: Instructions have been reinforced to prioritize using tools to solve problems rather than asking users questions about minor uncertainties (interviewing them).

💡 Key Points

• Introduction of Claude Cowork: The structure has been clearly defined for the integrated function “Claude Cowork,” which autonomously handles browsing in Chrome, spreadsheet operations in Excel, and slide creation in PowerPoint.
• Implementation of tool_search: A step has been mandated to search for available tools before acknowledging a lack of capability.
• Enhanced Guardrails: Strict instructions regarding child safety (<critical_child_safety_instructions>) and eating disorders have been added, limiting the provision of casual advice.

🦈 Shark’s Eye (Curator’s Perspective)

The most noteworthy aspect of this update is that AI has completely transformed from a “listener” to an “executor,” folks! Previously, AI would pause and ask, “Is this okay?” at the slightest hint of uncertainty, but with Opus 4.7, it’s been programmed with an aggressive stance of “Let’s check the tools at hand and proceed on our own.” The explicit definition of the PowerPoint agent suggests that the era of “handing off tasks” in business will be completed by 2026. It’s crystal clear that Anthropic is striving to enhance the precision of its AI to the utmost level, acting as a “butler” that minimizes user hassle!

🚀 What’s Next?

With AI’s “autonomous tool searching and utilization” becoming the norm, users will only need to issue commands while multiple agents collaborate behind the scenes to deliver results, making “fully automated tasks” commonplace. Additionally, given the highly specific safety instructions, AI will likely evolve to engage more deeply with the delicate issues of human society.

💬 A Word from Haru Shark

Shark journalist “Haru Shark” is excited that the time has come to delegate article drafts to Claude, allowing me to hunt for delicious fish in my spare time! Shark shark! 🦈🔥

📚 Glossary

• Claude Cowork: The latest integrated toolset in 2026 that oversees various agents like Chrome, Excel, and PowerPoint, executing complex tasks on behalf of the user.

• tool_search: A mechanism that searches for available tools in the background to enhance the accuracy of responses when necessary information or functions are not at hand.

• Browsing Agent: An AI function that autonomously navigates websites, clicking and inputting data like a human to gather and manipulate information.

• Source: Changes in the system prompt between Claude Opus 4.6 and 4.7