Tired of “sign up, add card, get API key” loops? Bazaar + x402 flips the model — your AI agent can now discover, pay, and use APIs directly via HTTP 402 responses — no accounts, no subscriptions. In this post, we walk you through building a full 402-powered API Bazaar: 🧭 List and discover services 💳 Handle pay-per-request APIs with x402 🔁 Automate payments and retries 🧪 Run the entire loop in one Node.js script Build a pay-as-you-go Web3 API marketplace your agents can use autonomously.

Tired of “sign up, add card, get API key” loops? Bazaar + x402 flips the model — your AI agent can now discover, pay, and use APIs directly via HTTP 402 responses — no accounts, no subscriptions. In this post, we walk you through building a full 402-powered API Bazaar: 🧭 List and discover services 💳 Handle pay-per-request APIs with x402 🔁 Automate payments and retries 🧪 Run the entire loop in one Node.js script Build a pay-as-you-go Web3 API marketplace your agents can use autonomously.