Starter template for piclaw add-on developers. Demonstrates the core patterns every settings-aware add-on needs.

Install

Open Settings → Add-Ons and install sample-addon from the catalog.

What it demonstrates

1. Settings pane

Registers a Settings → Sample Addon pane with:

• browser-side UI in web/index.ts
• direct config reads/writes via GET / POST /agent/addons/api/sample-addon/config
• no dependency on internal slash commands

The browser pane is just a local authenticated client of piclaw itself:

await fetch("/agent/addons/api/sample-addon/config");
await fetch("/agent/addons/api/sample-addon/config", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ enabled: true, greeting: "Hello" }),
});

• Checkbox — enable/disable toggle
• Text field — a non-secret config value (greeting), auto-saved on blur
• Password field — a secret (API key), saved directly to the keychain with a Save button
• Key presence indicator — ✓/✗ showing whether the keychain entry exists

2. Direct backend config API

The runtime entry registers config handlers directly with piclaw:

const registerAddonConfigApi = globalThis.__piclaw_registerAddonConfigApi;

registerAddonConfigApi?.("sample-addon", "config", {
  get: async () => loadConfig(),
  set: async (payload) => handleSetConfig(payload),
}, import.meta.dir);

Piclaw lazily loads installed add-on runtime entries on first config request, so the settings pane works without a slash-command bridge.

3. Config in the runtime database

All non-secret config is stored in the extension KV store (SQLite, global scope):

import { createExtensionStorage } from "./compat/extension-kv.js";

const kv = createExtensionStorage("sample-addon");
kv.set("config", { enabled: true, greeting: "Hello" }, "global");
const cfg = kv.get("config", "global");

The compat shim (compat/extension-kv.ts) resolves the runtime's KV store automatically. Copy it from this addon when creating a new one.

4. Secrets in the keychain

The settings pane saves secrets via POST /agent/keychain:

await fetch("/agent/keychain", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({ name: "sample-addon/api-key", secret: "sk-...", type: "token" }),
});

The runtime auto-injects keychain entries as environment variables — sample-addon/api-key becomes $SAMPLE_ADDON_API_KEY in process.env after restart.

5. Test tool

The sample_test tool returns the configured greeting and whether the secret is present, so you can verify the addon is wired correctly:

> use sample_test
Greeting: Hello from sample addon!
Secret configured: yes

6. UX test fixture

This add-on includes tests/features/settings.feature plus Playwright step definitions under tests/steps/. The add-on catalog's E2E harness turns those Gherkin scenarios into runnable Playwright tests and, in CI, publishes a PDF/HTML report with the package and add-on page.

Storage model

No config files are written to disk.

File structure

addons/sample-addon/
├── package.json          # Addon manifest
├── index.ts              # Extension entry: direct config API, KV config, keychain secret, test tool
├── web/index.ts          # Settings pane: checkbox, text, password, keychain save
├── compat/extension-kv.ts # KV store compat shim (copy to your addon)
├── tests/                # Gherkin UX tests and Playwright step definitions
└── README.md             # This file

Using as a template

1. Copy this directory to addons/your-addon/
2. Rename sample-addon → your-addon in package.json, index.ts, and web/index.ts
3. Replace the greeting field with your config
4. Replace the secret keychain entry name
5. Replace the test tool with your tool
6. If your add-on exposes a settings pane or other meaningful web UI, capture a screenshot on a test instance and store it under addons/your-addon/assets/, then reference it from the README. For Linux environments, prefer an overlayfs-based clean fixture, show only the target pane during the screenshot, and restore the state afterward.
7. Run bun run scripts/sync-catalog.ts --write to update the catalog