[Coinbase Launches CDP SQL API Supporting x402 Payments, Enabling Autonomous On-Chain Data Access for AI Agents] BlockBeats News, February 13 – Coinbase Developer Platform (CDP) announced the launch of an SQL API supporting x402 payments, allowing AI agents to access indexed data such as Base's blocks, transactions, token transfers, and decoded events without the need for API keys, account registration, or human intervention. Each SQL query costs a fixed $0.1, settled instantly on-chain via USDC. The x402 protocol simplifies the payment process: agents receive a 402 error response indicating the payment requirement, and after signing a USDC payment proof, they can directly access the query results.