harness

My personal Pi harness: a Pi package of extensions, skills, prompt templates, design doctrine, and shared configuration. I use it to shape how the agent works across projects and machines. It builds on Pi’s own capabilities instead of maintaining a parallel agent core; the durable-harness track records the upstream contracts and when this repository adopts them.

Start with Architecture for installation, how Pi loads the package, and machine configuration. Use the Codemode guide for tool composition, inherited tool selection, and explicit MCP allowlists.

Contents

• Extensions: executable tools, commands, and interface changes. Each extension directory has its own README.
• Web interface: browser access to native Durable conversations and existing ordinary sessions. Start with npm run ui.
• Runtime management: independent operations, recovery, and harness maintenance. Use npm run runtime -- help.
• Skills: task procedures, each defined in a SKILL.md file.
• Prompt templates: operator-invoked shortcuts, including /tldr [hint] for a short, plain-language summary. See the prompt convention for use and ownership.
• Pillars: principles, patterns, and heuristics that guide agent judgment.
• Documentation: architecture and repository conventions.
• Configuration: shared application configuration, with setup in Architecture.
• Evaluations: maintained evaluations and their execution requirements.
• Scripts: repository checks and development automation.

Development

Follow the worktree convention and the repository instructions before changing the harness.

Released under the MIT license. Feel free to copy anything useful or fork it for your own setup. I do not provide support or accept unsolicited contributions.