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Coinbase Developer Platform Integrates x402 Standard for AI Agent Payments

Coinbase’s new SQL API allows AI agents to query Base blockchain data for a fixed $0.10 fee using USDC, streamlining autonomous machine-to-machine payments without API keys.

USDC

Summary

The Coinbase Developer Platform launched a SQL API supporting x402 payments, enabling AI agents to access Base blockchain data for a fixed fee of $0.10 per query. The protocol facilitates instant settlement via USDC without API keys, requiring agents to sign payment proofs after receiving a 402 error response. This integration removes traditional authentication barriers, aiming to foster autonomous machine-to-machine transactions within the blockchain ecosystem.

Terms & Concepts
  • x402: A payment standard protocol designed to facilitate metered, machine-to-machine payments for HTTP resources, such as API queries.
  • Base: An Ethereum Layer 2 blockchain incubated by Coinbase that offers a secure, low-cost, and developer-friendly way to build decentralized applications.
  • USDC: A fiat-collateralized stablecoin pegged 1:1 to the U.S. dollar, ensuring price stability for digital transactions.