# Ren API Ren API is an x402 payment-gated API. Each protected call costs $0.01 USDC on Base mainnet and settles through Coinbase's public x402 facilitator. Pay-to wallet: 0xf58F75A803f1264D3F658885C0D12DF4f3C51303 Network: Base mainnet, eip155:8453 Facilitator: https://api.cdp.coinbase.com/platform/v2/x402 GET /restaurant?name= Returns restaurant guidance from restaurants.json. The name query is matched case-insensitively against the restaurant name. A successful response contains JSON fields: name, verdict, cooks_in, order_this, and skip_this. Example request: GET /restaurant?name=Buff%20Burger GET /swaps?dish= Returns seed-oil-free alternatives for the requested dish. Supported dish values are fries, fried chicken, salad dressing, and wings. A successful response contains JSON fields: dish and alternatives. Example request: GET /swaps?dish=fries GET /list Returns a lightweight restaurant directory from restaurants.json. Each item contains only name, verdict, and neighborhood. Optional filters: neighborhood and verdict, both matched case-insensitively. This endpoint does not return cooks_in, order_this, or skip_this. Example requests: GET /list GET /list?verdict=clean GET /list?neighborhood=Montrose%20%2F%20Heights