@fabric-harness/cloudflare

Cloudflare Workers + Sandbox adapter for Fabric Harness.

Install

npm install @fabric-harness/cloudflare @fabric-harness/sdk

@cloudflare/sandbox is a peer dependency — install it as well if you want a real Cloudflare-backed sandbox; otherwise the adapter falls back to the in-memory virtual sandbox.

Quick start

import { agent } from '@fabric-harness/sdk';
import { getCloudflareSandbox } from '@fabric-harness/cloudflare';

export default agent({
  name: 'edge-assistant', triggers: { webhook: true },
  run: async ({ init, payload, env }) => {
  const sandbox = await getCloudflareSandbox(env.SANDBOX, 'session-1');
  const session = await (await init({
    sandbox,
    model: 'anthropic/claude-sonnet-4-6',
    runtime: 'stateless',
  })).session();
  return { reply: await session.prompt<string>(String((payload as any)?.message ?? '')) };
},
});

Build with fh build --target cloudflare to produce an artifact ready for wrangler deploy.

Documentation

• Cloudflare deployment
• Sandboxes

License

Apache-2.0