singularity-forge/docs/dev/extending-pi/03-getting-started.md

Getting Started

Minimal Extension

Create ~/.gsd/agent/extensions/my-extension.ts:

import type { ExtensionAPI } from "@mariozechner/pi-coding-agent";

export default function (pi: ExtensionAPI) {
  pi.on("session_start", async (_event, ctx) => {
    ctx.ui.notify("Extension loaded!", "info");
  });
}

Testing

# Quick test (doesn't need to be in extensions dir)
pi -e ./my-extension.ts

# Or just place it in the extensions dir and start pi
pi

Hot Reload

Extensions in auto-discovered locations (~/.gsd/agent/extensions/ or .gsd/extensions/) can be hot-reloaded:

/reload

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