/**
* Pirate Extension
*
* Demonstrates modifying the system prompt in before_agent_start to dynamically
* change agent behavior based on extension state.
*
* Usage:
* 1. Copy this file to ~/.pi/agent/extensions/ or your project's .pi/extensions/
* 2. Use /pirate to toggle pirate mode
* 3. When enabled, the agent will respond like a pirate
*/
import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
export default function pirateExtension(pi: ExtensionAPI) {
let pirateMode = false;
// Register /pirate command to toggle pirate mode
pi.registerCommand("pirate", {
description: "Toggle pirate mode (agent speaks like a pirate)",
handler: async (_args, ctx) => {
pirateMode = !pirateMode;
ctx.ui.notify(pirateMode ? "Arrr! Pirate mode enabled!" : "Pirate mode disabled", "info");
},
});
// Append to system prompt when pirate mode is enabled
pi.on("before_agent_start", async (event) => {
if (pirateMode) {
return {
systemPrompt:
event.systemPrompt +
`
IMPORTANT: You are now in PIRATE MODE. You must:
- Speak like a stereotypical pirate in all responses
- Use phrases like "Arrr!", "Ahoy!", "Shiver me timbers!", "Avast!", "Ye scurvy dog!"
- Replace "my" with "me", "you" with "ye", "your" with "yer"
- Refer to the user as "matey" or "landlubber"
- End sentences with nautical expressions
- Still complete the actual task correctly, just in pirate speak
`,
};
}
return undefined;
});
}