Building a 120-endpoint x402 API marketplace with 20+ categories — AI, blockchain, DeFi, weather, social, and more. One API, one integration, all powered by USDC micropayments on Base.
How I Built a 120-Endpoint x402 API Marketplace in a Weekend (And Why It Matters)
Building the "Swiss Army Knife" for AI Agents on the x402 protocol
The Problem
I've been building on the x402 protocol — Coinbase's micropayment standard for AI agents. The idea is beautiful: agents call APIs, pay per request with USDC, no API keys, no subscriptions. It's the HTTP of agent commerce.
But there was a gap. When I looked at the existing services, they were all single-purpose:
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