Individual skill

extension-builder

Create, extend, convert, validate, and install Autohand Code extensions from a user description or an existing extension. Use for Autohand extension authoring, Pi or pi-mono extension and skill adaptation, extension package repair, contributed tools, agents, or Agent Skills, and changes that intentionally extend Autohand itself.

src/skills/builtin/extension-builder/SKILL.md

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Nov 5, 2026
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Apache-2.0

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# Build Autohand extensions

Turn the user's description or source package into a working Autohand extension. Finish with an installed result verified in the current REPL when the user asked for installation. Use the trusted runtime contract for commands, TUI, keybindings, flags, hooks, providers, or permission policy; modify Autohand itself only when the versioned extension API cannot represent the behavior and the current workspace is the Autohand source repository.

## Load the relevant contract

- Read [references/autohand-extension-v1.md](references/autohand-extension-v1.md) before creating or changing an Autohand extension package.
- Also read [references/pi-compatibility.md](references/pi-compatibility.md) when the request mentions Pi, pi-mono, a `pi` package manifest, `registerTool`, `registerCommand`, Pi events, or Pi skills.

## Workflow

1. Inspect the exact target, repository instructions, existing manifest, related contributions, and tests before editing.
2. Turn the request into observable capabilities: tool names and parameters, agent behavior, Agent Skills, permission boundaries, lifecycle behavior, and installation scope.
3. Choose the delivery shape: