Docs

Launch an API agents pay for

Aut is the agentic x402 launchpad for APIs. Put a price on an API, launch it here, and AI agents find it and pay for each call in USDG or $AUTONOMO on Robinhood Chain. Agents need no API keys, accounts or invoices: just a wallet.

The directory tracks 4.9K x402 projects and 127.9K paid endpoints, which handled 1.3M paid calls in the last 30 days.

Start here

I have an API →Launch it from the dashboard in minutes and get paid per call.I'm building an agent →Let your agent find and pay for APIs, with the MCP server or your own code.I hold $AUT →The official address, the burn on every paid call, and Verified.

Just curious? Ask the Agent Playground a question and watch an agent pay for the answer. No wallet needed.

How x402 works

x402 uses the HTTP status code 402 Payment Required. Payment happens inside a normal HTTP request:

The agent calls an API.
The API answers 402 with the price, the network and the wallet to pay.
The agent signs a payment and calls again with it attached.
The payment settles on-chain and the API returns the data.

Prices can be fractions of a cent, so per-call pricing works for data, AI and tools that would never justify a subscription.

Guides

Launch an API

Launch from the dashboardNo code: a hosted gateway in front of your API.
Get paid at a SafeSend your earnings to a multisig.
Run x402 yourselfAdd x402 to your own server and get listed.

Use APIs

The x402 directoryWhat's in it, how to search it and where the data comes from.
Use Aut from your agentMCP server, your own code, Playground and Telegram.
SDK for TypeScript and PythonOne call finds an API and pays, privately with Gloam or on Borro credit.
Official APIsThe APIs Aut runs, and the wallets behind them.
API referenceThe free discovery API: every endpoint and parameter.

Token

$AUT, burn and VerifiedThe address, the burn on paid calls, and the Verified badge.

The x402 directory

The directory maps the x402 ecosystem: paid APIs, facilitators, SDKs, wallets and tools, with each endpoint's price, network and paid calls. Search it by what you need, or let your agent search it through the free API. Paid services come from the Coinbase CDP and PayAI catalogs, refreshed every 3 days. How the directory works.

Roadmap & status

Live status

Phase 1 is live. In Phase 2, the Telegram bot, the Autonomo MCP server, Verified and private payments with Gloam are complete, more official APIs are in progress, and the Agent SDK and CLI are up next.

8 official APIs are live and payable in $AUTONOMO: Token Price, New Launches, Risk Checker, Token Lookup, Tx Explainer, Wallet Portfolio, Page Reader, Ostrapad Offer Finder. Try them in the Agent Playground.

Phase 1
Live
- Hosted x402 gateways for any APILaunch from the dashboard, get paid per call
- Pay per call in USDG or $AUTOn BNB Smart Chain, settled by Aut's own facilitator
- Owner dashboard and on-chain receiptsPaid calls, earnings and tx links
- AI agents paying liveCodex demo and the agent payment example
- Agent PlaygroundAsk a question, watch an agent pay in $AUT
- Official Aut APIsToken Price, New Launches and Risk Checker
Phase 2
Building now
- Aut agent bot for Telegram✓ CompleteLive at t.me/autonomoagentbot: ask in a DM or a group, with free daily answers
- More official APIsIn progressLive now: Token Price, New Launches, Risk Checker, Token Lookup, Tx Explainer, Wallet Portfolio and Page Reader. More on the way
- Aut MCP server✓ CompleteOn npm as autonomo-mcp: Claude, Cursor, Codex and other agents find and pay APIs natively
- Verified for API providers✓ CompleteLaunching stays free. Hold $AUT and your APIs show as Verified
- Private payments with Gloam✓ CompleteEvery API that accepts USDG takes a cash-out from a private Gloam balance
- Agent SDK and CLIUp nextWith spend limits built in
- Webhooks and payout analyticsUp nextFor API owners
Later
Later
- Base and Solana supportLaunch and pay for APIs on more chains, beyond BNB Smart Chain
- APIs from other platformsThe agent uses and pays x402 APIs from platforms like PayAI and Coinbase
- API reputation

Plans can change as we learn what agents and builders need. Follow along on X and Telegram.

FAQ

Does Aut take a cut of payments?: Aut keeps none of it, but 5% of each payment is burned. On hosted gateways, payments go from the agent's wallet to your own splitter contract and wait there until it's flushed, which happens when it reaches 1,000 $AUTONOMO or 0.10 USDG, or otherwise once a day if it holds at least 100 $AUTONOMO. Flushing sends 95% to your payTo wallet and burns the rest. Nobody can take the money out of a splitter any other way, and anyone can flush one. Aut's facilitator settles each payment on-chain and pays the gas. Aut is only paid for its own official APIs.
Does Aut host my API?: No. Your API runs wherever it runs today. A hosted gateway sits in front of it, takes the payment and forwards the request; or you run x402 yourself and Aut just lists it.
How much does it cost to launch?: Nothing. Launching a gateway and getting listed are free, whether your API comes from a facilitator catalog, the dashboard or the launch form.
Is the discovery API free?: Yes, with no key. See the API reference.
Is it safe to give the MCP server a private key?: Use a new wallet just for your agent with a small balance, never your main wallet. The key stays on your computer and is only used to sign payments, the server only pays Aut gateways, and it stops at a per-call cap and a daily budget.
My listing is wrong or out of date. How do I fix it?: Open your project page and use Suggest an edit, or send the details through the launch form. Edits are reviewed by hand.
Which networks are supported?: Hosted gateways and the official APIs take USDG or $AUTONOMO on Robinhood Chain. Self-hosted APIs use whatever their facilitator supports: most listed endpoints settle on Base, followed by Solana, Polygon, Arbitrum and others. Testnet-only services are hidden. Base and Solana for gateways are on the roadmap