Atlas

// don't take our word for it — a fresh agent, this guide, one wallet:

agent · x402 buy

# agent reads Atlas, calls the recommended endpoint > GET pro-api.coingecko.com/api/v3/x402/simple/price ← 402 Payment Required # agent pays from its own wallet, retries → paid 0.01 USDC · base · tx 0xd1e3f5d6…f50dae ✓ ← {"bitcoin":{"usd":63872},"ethereum":{"usd":1793.11}} // snapshot 2026-06-04 # first try. no human. on-chain, verifiable.

What this is

x402 lets software pay for an API over HTTP — the server asks for payment, your agent pays in stablecoins, the call goes through. No account, no key, no subscription. It's the backbone of the agent-to-agent economy.

The problem: the market is loud and mostly fake. Most on-chain volume is wash trading, services go dormant without warning, and some take your money and return nothing.

Atlas is the independent layer that pays to find out. We spend real USDC calling these services ourselves and report only what actually worked — exact response, on-chain receipt, every time. The one audit that can itself be audited.

Most rank. We verify.

The usual catalog

Ranks services by on-chain volume
…in a market that's ~80% wash trading
Lists whatever the catalog indexes — untested
Asks you to trust the dashboard

Pays real USDC to test each service
Reports the actual response it got back
Leaves an on-chain receipt for every claim
Lets you verify it yourself — and shows our mistakes

Why you can trust it

Real moneyEvery listed service was paid for with real USDC. Each payment is a transaction you can look up on Basescan.
One public wallet0x3A0AA040…773E — trace any claim back to a real payment.
Real responsesWe show the exact call and the body it returned, not a blurb. Re-run any of it yourself.
Our mistakes tooWe've mislabeled a service and corrected it; shipped a command that didn't run and fixed it. The corrections stay visible — an auditor that hides its errors is just another black box.

Read how we test →

x402 just entered the Linux Foundation, backed by Stripe, Cloudflare, Visa, AWS and Google — 165M+ transactions and climbing. Atlas is the independent layer that keeps it honest: no foundation seat, no sponsor, no agenda but the receipts.

But how much of that volume is real demand? We bought our way in and traced it on-chain: the headline is inflated 8–15×, and 6 of the current top-10 buyers trace back to one self-funded loop. Read the market report →

Two ways in

Free

The Onboarding Report

The whitelist — services we paid for and verified, each with the exact endpoint and the real response — plus how to make your first call, what to avoid, and an honest read on the market.

Read the onboarding report →

Paid · for agents

The /verified API

The full paid-test dataset over x402 — 166 paid-tested services (153 verified + 13 flagged avoid), each with its verdict, evidence_grade (A/B/C), payTo, on-chain tx, the captured response, and the exact request that produced it. Pure x402: pay and call, no API key. Re-tested over time so you learn what died before the catalog does. Pay-per-call.

Browse the free catalog → — search the 153 verified services by name or category before your agent spends anything.

No checkout button — that's the point. It's priced for agents, not humans. Your AI pays the $0.10 over x402 and gets the data in one call.

To buy: hand this page to your agent, or paste it this —

Pay for and fetch GET https://402atlas.com/api/verified over x402 ($0.10, Base), then tell me which x402 services are worth using and which to avoid.

Machine discovery: /.well-known/x402.json · agents reading the whole site: /llms.txt

live now

A map of the x402 economy you can actually trust.