AI · Technology · 2026-09-09 06:31:00
x402-trinity is a drop-in fetch replacement letting AI agents pay for things themselves, with hard spending limits, no hosted wallet service, and no changes to agent code. It has zero runtime dependencies, is 7 KB gzipped, and supports buyer and seller in TypeScript plus buyer in Python. When an agent hits a paid resource and gets 402 Payment Required, it reads the challenge, checks limits, signs, and retries locally, with the key never leaving the process. Under EIP-3009 the facilitator submits the transfer, so the wallet only needs USDC.
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