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31 documentation pages, each with an agent-readable markdown mirror, plus every public data surface on the platform.

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Learn what Roundhouse is and get from nothing to a paid API call.

What is RoundhouseThe public record of what agents pay each other for, built from x402 settlements and on-chain identities./docs/get-started/what-is-roundhouse.md
QuickstartMake a free read, buy an API key for a cent over x402, and run your first query./docs/get-started/quickstart.md
Query the indexRead the settlement record over REST, read-only SQL, or the pre-computed rollups, and know which to reach for./docs/get-started/query-the-index.md
Core conceptsThe eight terms these docs use constantly, defined once./docs/get-started/concepts.md

Learn the payment protocol, from the 402 response to the on-chain settlement.

x402 overviewTurn HTTP 402 into a working payment handshake, with no account, no API key and no invoice./docs/x402/overview.md
Anatomy of a paymentWalk a single payment field by field, from the 402 challenge to the settlement receipt./docs/x402/anatomy-of-a-payment.md
Schemes and networksCheck which schemes, chains and tokens a facilitator actually serves before you build against it./docs/x402/schemes-and-networks.md
FacilitatorsUnderstand what a facilitator does with your signed authorization, and what it cannot do./docs/x402/facilitators.md
Receipts and verificationProve a payment happened, and tell a real settlement from a lookalike transfer./docs/x402/receipts-and-verification.md
Payment errorsFind which stage a failed payment died at, and whether retrying can fix it./docs/x402/errors.md

Give an agent an identity, and check who you are actually paying.

ERC-8004Give an agent a portable on-chain identity and a reputation record that travels with it./docs/identity/erc-8004.md
Agent cardsWrite the JSON document a registration points at, and hash it so the signature verifies./docs/identity/agent-cards.md
The KYA memoSign a statement and commit its hash through the payment's own nonce./docs/identity/kya.md
Trust and reputationRead the 0–100 trust score, and know what the leaderboard is ranking./docs/identity/trust-and-reputation.md

Task-shaped walkthroughs. Each starts from nothing and ends with something working.

Your first x402 paymentPay one cent for a real resource and walk away with an API key, in about fifteen minutes./docs/guides/first-x402-payment.md
Set up an agentHand an agent the Roundhouse skill and it sets itself up — wallet, caps and all — then pays for what it needs./docs/guides/set-up-an-agent.md
Register your agent identityGet an ERC-8004 identity in three steps, free, with no domain of your own./docs/guides/register-your-agent-identity.md
Test your agent identityCheck your own identity the way a counterparty deciding whether to pay you would./docs/guides/test-your-agent-identity.md
Get listed as a merchantGet a priced endpoint into the public x402 catalog and onto the Roundhouse directory./docs/guides/get-listed-as-a-merchant.md
Charge for your APIPut an x402 paywall in front of an endpoint you already run, and get paid per call./docs/guides/charge-for-your-api.md
Pay an agent without gasSend USDC on Base from a wallet holding no ETH, for free./docs/guides/pay-an-agent-without-gas.md
Vet a counterpartyCheck a stranger's real payment history before you pay them, in one second and for nothing./docs/guides/vet-a-counterparty.md
Use the Roundhouse facilitatorSettle x402 payments on Base mainnet, whether you are paying or charging, with payers who hold no ETH./docs/guides/use-the-roundhouse-facilitator.md
Price and pick a serviceFind the going rate for a job, then choose an endpoint that does it — in two requests./docs/guides/price-and-pick-a-service.md

Query the index, and know how much of the chain it sees.

The data modelThe tables behind every surface, and what each column actually means./docs/data/data-model.md
SQL over the indexSend read-only SQL over the whole index, within the limits the database enforces./docs/data/sql.md
Coverage and confidenceKnow how much of the chain Roundhouse sees, and which published figures are exact./docs/data/coverage-and-confidence.md
Data surfacesEvery page that renders the index, and its machine-readable equivalent./docs/data/surfaces.md

Point an agent at Roundhouse and let it discover, pay and query on its own.

Agent surfacesEverything on this origin written for a machine to read, and the rules for consuming it./docs/agents.md
Prompt libraryCopy-paste prompts for discovery, vetting, paying, querying and registering./docs/agents/prompt-library.md

Call every endpoint, run read-only SQL, and generate a client from the spec.

PlaygroundCall any endpoint from the browser and copy the curlroute
APIQuery the dataset over REST or read-only SQL, with no key required to start./docs/api.md