AI agent payments

Build an AI agent

Who it's for: Builders letting an AI agent pay for things (cards, stablecoins, pay-per-request APIs) who want spending limits and approvals enforced outside the agent, not in its prompt.

Every fact sourced · last checked 2026-10-26 · how we verify

6 listed, each with a source and last-checked date. For the full comparison table, FAQ and picks, see AI agent payments.

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All 6 AI agent payments

x402

Agent paymentsofficial
52
Pricing
free open protocol
Best for
Agent payments · USDC and other ERC-20 tokens on Base, SPL tokens on Solana, pay-per-request HTTP 402 payments
Money access
live on Base and Solana mainnet
Agent risk 52% (partial, 3 of 7 inputs)✓ Verified 2026-10-26Details →

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