I Built a Pay-Per-Call MCP Server on Base Mainnet — 26 Live Capabilities, No API Key, USDC Micropayments
A developer has created "The Stall," a pay-per-call AI service that utilizes the x402 protocol for micropayments in USDC on the Base mainnet. This system eliminates the need for API keys or monthly subscriptions, allowing AI agents to pay precisely for the data they access. The architecture includes "The Stall" chassis for payment verification and capability routing, and "PROSPECTOR" which analyzes on-chain settlement data to identify in-demand services. AI
IMPACT Enables a novel, decentralized payment model for AI agent data access, potentially reducing costs and friction for developers.