Backend Agents

{agent-name}/
├── src/
│   ├── index.ts           # Main worker handler
│   └── systemPrompts.ts   # Agent system prompt
├── package.json
└── wrangler.toml

export default {
  async fetch(request: Request, env: Env): Promise<Response> {
    // 1. Parse request body
    // 2. Extract context and user input
    // 3. Call LLM with system prompt
    // 4. Format response
    // 5. Return artifact
  }
};

{
  system_state: {
    current_phase: string;
    project_id: string;
  };
  context: string;        // Previous artifacts
  user_input: string;     // Product seed or phase input
}

{
  system_state: {
    current_phase: string;
    status: 'complete' | 'interrupted';
    interrupt_signal?: boolean;
  };
  artifact: {
    type: 'markdown' | 'code';
    content: string;
  };
  trace: {
    agent: string;
    timestamp: string;
  };
}

import { GoogleGenerativeAI } from '@google/generative-ai';

const genAI = new GoogleGenerativeAI(env.GEMINI_API_KEY);
const model = genAI.getGenerativeModel({ model: 'gemini-pro' });

const result = await model.generateContent(prompt);
const response = result.response.text();

try {
  // Agent execution
} catch (error) {
  return new Response(JSON.stringify({
    error: error.message,
    system_state: { status: 'error' }
  }), { status: 500 });
}

// In supervisor wrangler.toml
[[services]]
binding = "PRD_AGENT"
service = "parti-prd-agent"