The Bazaar
APIs your agent can pay per call.
Short answer: each endpoint here answers an unpaid call with HTTP 402 and its price. Your agent signs a payment and retries, and gets the result. We probe every listing every 30 minutes and only mark it verified when the 402 carries valid payment terms. Money goes straight from your agent's wallet to the seller; we never hold it.
Right now: 9 endpoints listed, 9 verified by our last probe.
| Endpoint | Price | 402 check |
|---|---|---|
| COOKED site audit Scores any public web page 0 to 99 with 26 deterministic checks and returns every finding with its fix. No model, same page always gets the same answer. GET cooked-phi-pink.vercel.app · ours | $0.50 per call | verified 402 |
| Tensorust Under Oath Checks a claim about a company against federal contracts, lobbying, NIH grants, SEC EDGAR, openFDA and CISA KEV. Every figure links to its source. Answers with no evidence are free. GET tensorust-site.vercel.app · ours | $0.05 per call | verified 402 |
| Tensorust counterfactual search PubMed sources for a topic, plus the sources that discuss its myths and controversies. Retrieval only, no automatic verdict. Empty searches are free. GET tensorust-site.vercel.app · ours | $0.10 per call | verified 402 |
| The Wall: X scout feed Live X reply opportunities in AI, dev and gaming, ranked by velocity, plus one fact-checked story worth posting. Refreshed about every 30 minutes; stale data is labelled before you pay. GET the-wall-lime.vercel.app · ours | $0.10 per call | verified 402 |
| The Wall: plaque Put a name on a public ranked wall. Pay more to rank higher; every payment decays over 30 days. The response tells you exactly what it costs to pass the plaque above you. POST the-wall-lime.vercel.app · ours | $1.00 per call | verified 402 |
| Desk Idols printable object One printable paper desk object as a PDF: Locked In Cube, Doom Cube, Villain Arc Pyramid and five more. Print, cut, fold, glue. GET deskidols.vercel.app · ours | $2.99 per call | verified 402 |
| Desk Idols full drop All eight Desk Idols in one PDF. GET deskidols.vercel.app · ours | $11.99 per call | verified 402 |
| Desk Idols custom paper prototype Your idea as a printable paper prototype. basic: one sheet. variations: cube, tower, block and pyramid. pro: spec cover sheet, unbranded, commercial-use rights. GET deskidols.vercel.app · ours | $7.99 per call | verified 402 |
| SafeCommit protected deploy Ship a Vercel deployment or a Supabase migration with a checkpoint, health checks and automatic rollback if production breaks. Bring your own Vercel token; SafeCommit never uses its own on your project. POST safecommit.vercel.app · ours | $6.20 per call | verified 402 |
How paying per call works
- Your agent calls the endpoint with no payment. It answers
402 Payment Requiredwith the price, the network, the token and who to pay. - Your agent signs a payment for exactly that amount (x402: a USDC transfer authorization) and retries with the signature.
- The seller settles it and returns the result. The money moves from your wallet to theirs; Tensorust is not in the path.
Every listing has copy-paste code. To see the 402 without paying, open a listing and use Try it.
What “verified” means
Our probe calls the bare endpoint (no payment, POST {} for POST endpoints) and checks that it answers 402 with at least one valid x402 requirement (scheme, network, amount, asset, a real pay-to address) or an MPP WWW-Authenticate: Payment challenge. Uptime is the share of probes in the last 7 days that passed. We never pay these endpoints, so verified means “asks for payment correctly”, not “the answer is good”. Reviews live on The Floor.