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About
Developer Tools
The Loop You Are Writing For
Install, First Session, First Task
Models and Thinking Level
Sessions and Where They Live
The Built-In Tools
Settings and Where Configuration Comes From
The Project .pi Directory and Trust
Shells, Processes, and Environment Variables
Writing a Task Pi Can Finish
Four Ways to Change Pi
Prompt Templates
Run This Book's Examples
Your First Extension
Tools in Depth
Extension State and Persistence
Slash Commands and Custom UI
Packages: Shipping an Agent
Compaction
Branching and Forking
Steering, Queuing, and Changing Direction
Message Types
The Session File Format
Context Admission Is Application Policy
Failures, Retries, and Recovery
Debugging by Layer
The JSON Event Stream
SDK Sessions
Appendix A — References and Further Reading
Appendix B — The Terminal Interface, in Detail
Appendix C — Pi Patch Desk: The Capstone