Every x402 listing says it works. We buy from the gated ones with real USDC and publish what came back.
Free probes can't tell you if an endpoint delivers. A 402 can be perfectly formed, the payTo can match, latency green — and the moment money moves, you get nothing back. So we don't just probe. We buy.
Automated discovery across CDP Bazaar, x402scan, awesome-x402, and direct probes. Every gated endpoint enters the index with full metadata.
A Coinbase-custodied agent wallet signs real USDC payments (EIP-3009). Not simulated. Not testnet. Facilitator receipts are the per-call proof — x402 does not mint a separate on-chain tx per listing.
If data returns and it's useful → returned. If payment settles but nothing comes back → demoted automatically. No human judgment involved.
All sweeps combined: 1,779 payments settled; 1,374 proof-backed; 307 of 1,779 settles returned usable data (17.3%). The Aug 25, 2026 full-index sweep alone: 15,695 gated doors attempted, 259 returned data (1.65%). The failures are broken payment paths: the endpoint advertises x402, but checkout fails the moment a real agent arrives with real money. We paid those doors twice and the same doors still failed. Glossary — settled: payment accepted on-chain. proof-backed: settle with a full facilitator receipt or an on-chain-verified unique tx hash. returned data: a settle that gave back usable payload. Solana dual-rail: 72 doors paid, $0.84, receipts on Solscan (Aug 2025 sweep).
Every route. No account. Charging is off on purpose — not because checkout is down.
After that, the free floor stays: mismatches, stats, onramp, and the first 25 calls a day. The paid routes turn back on. We'll say so before they do.
payTo drift. The wallet a listing advertises vs the wallet that actually answers.
Delivery rates from paid sweeps.
A–F from settled receipts. Cold start says insufficient history. It does not invent a grade.
Every directory has a leaderboard. Ours has a spam filter with receipts. These are listings that looked perfect — until we checked who actually gets the money. This board is the reason our leaderboard only ranks domains a real operator runs.
No accounts. No keys. Free through 2026-12-31.
Full route list on the API page.