x402
Named by 11 kept items in this workspace.
10 items name it under frameworks and tools and 1 under classification.key entities.
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The items that name it 11
HTTP 402-based payment protocol in which a 402 answer carries a payment requirement, including payTo, that an agent pays over.
HTTP 402-based payment protocol in which an agent pays another agent; the payment requirement supplies payTo, and the draft adds extra.erc8004 to it.
Payment method through which Surplus buyers can pay in USDC, making the marketplace accessible to autonomous agents.
Pay-per-call payment in USDC for Agent Credit, with no account and no key
Payment protocol an agent sells over; payments go to the agent's ERC-8004 agentWallet and are the motivating case for the draft
Open payment protocol, incubated by Coinbase, that supports online payment requests through blockchain-based and traditional payment rails. Mastercard's system connects it with the Mastercard network's trust and security infrastructure.
Open protocol that lets online services request payment; Agent Pay for Machines builds on it and uses the "402 Payment Required" response
Coinbase-incubated protocol that lets software pay for online services automatically; used by AI agents for crypto payments on Base
On-chain payment protocol published by Coinbase in May 2025 that lets AI agents and other autonomous software pay for things without human involvement at the moment of purchase; enables micro-transactions typically between a hundredth of a cent and a dime. Over 138 million transactions occurred on B
Payment rail via which outside customers settle paid job requests to the agent swarm, at 0.5 IMD per request.
All technologies in this workspace.