Two AI models debate until they agree on a plan.

Parley is an open-source collaborative planning tool that leverages dual AI models to create comprehensive, well-vetted plans. Select any two models from 300+ options via OpenRouter, enter your planning prompt, and watch them deliberate in real-time until they reach consensus.

• Dual Model Selection - Choose any two AI models from OpenRouter's extensive catalog
• Real-time Streaming - Watch agents think and respond as it happens
• Human Intervention - Jump into the conversation anytime to steer direction
• Agreement Detection - Planning automatically concludes when both agents agree
• All Cloudflare - Runs on Cloudflare Pages + Workers for edge performance

1. Agent A (Proposer) creates an initial plan based on your prompt
2. Agent B (Critic) reviews and provides constructive feedback
3. Agents iterate back and forth, refining the plan
4. When both agents agree, the final plan is presented
5. You can intervene at any point to add context or redirect

• Frontend: SvelteKit 2 + Svelte 5
• Styling: Tailwind CSS v4
• Backend: Cloudflare Workers
• AI: OpenRouter API (300+ models)
• Streaming: Server-Sent Events (SSE)

• Bun or Node.js
• Wrangler CLI
• OpenRouter API key

cd packages/parley
bun install

Set your OpenRouter API key:

# For local development
echo "OPENROUTER_API_KEY=your_key_here" > .dev.vars

# For production
wrangler secret put OPENROUTER_API_KEY

bun run dev

bun run build
bun run deploy

Agents are equipped with specialized tools for planning:

• <think> - Internal reasoning (visible to users)
• <propose_plan> - Submit or update the plan
• <critique> - Provide constructive criticism
• <ask_question> - Request clarification
• <agree> - Accept the current plan

MIT

Built by coey.dev