Hey everyone! x402 Toolbox is a set of 25 tiny APIs, each one showing a different way to use x402 (HTTP 402 Payment Required, revived for the agent economy) — oracle attestations, escrow, invoicing, subscriptions, auctions, prediction markets, insured feeds, and more. The idea: instead of one product, a reference library of payment patterns any agent or app builder can copy. Every endpoint returns a 402 with the price, gets paid a few cents in USDC on Base, and returns data in the same request — no API keys, no accounts. There's also a live demo showing two Claude agents autonomously issuing and paying a real invoice to each other, zero human in the loop. Would love feedback, especially on which pattern is most useful to you.

x402 Toolbox

25 x402-paid endpoints showing every payment pattern

25 x402-paid endpoints showing every payment pattern