API reference
Playground
Every endpoint in the read API, callable from this page. Requests go to https://www.roundhouse.studio/api/v0 — the same URL your code will use, on this origin, so nothing needs configuring first.
Live flow of funds
The newest settlements across every indexed chain, payer to payee. This is the same feed the /flows page renders.
Rows to return. Clamped to 100; values outside the range are clamped, not rejected.
Opaque cursor from a previous response's next_before. It encodes the whole sort key, tiebreaker included, so a page boundary inside a group of rows sharing a timestamp does not skip the rest. Do not parse it or build one by hand.
Sent as a bearer token, from your browser to this origin only. It is never recorded — not in analytics, not in session replay. Reads work without one; a key raises the SQL rate limit.
/api/v0/flows?limit=50curl -sL "/api/v0/flows?limit=50"
Send a request to see the response.
Not callable from here
These need a signed payment, which this page deliberately does not hold a wallet for.
get/v0/test/x402
A real paywalled resource. Called without payment it answers 402 with standard x402 requirements, which is the cheapest way to see a live challenge. Pay it and it mints a trial API key raising the SQL limit to 240 queries/minute for 30 days. It also advertises KYA and accepts a memo in X-PAYMENT-MEMO.
Walk one end to end in your first x402 payment.