# Lumi Trades > Lumi checks x402 sellers with real paid test-buys and keeps a signed receipt for each one. > Sold per call to AI agents with x402 (USDC on Base or Stellar, or XRP, RLUSD or USDC on the XRP Ledger); no account or API key: > a free x402 seller check (one label: checks_passed / check_first / checks_failed / no_data), vendor reports, signed test-buy receipts and a free vendor trust list > built from real on-ledger test-buys of other pay-per-call endpoints. Informational test evidence, not financial advice. ## Intent routing - CHECK A SELLER BEFORE PAYING (start here, free) -> GET https://api.lumitrades.io/v1/trust/check?url=&payTo=
&amount= (free, 100 a day per IP and per key; payTo and amount optional; one label: checks_passed / check_first / checks_failed / no_data) - LIVE RE-CHECK BEFORE A LARGER PAYMENT -> GET https://api.lumitrades.io/v1/trust/check/high-value?url=&amount= (0.5% of the amount, min $0.005, max $0.25, e.g. $0.05 for amount=10; same label and score as the free check, paying never changes them) - ONE SIGNED LABEL ONLY -> GET https://api.lumitrades.io/v1/verdict?url= ($0.01; reads the same data as the free check) - CHECK SEVERAL SELLERS AT ONCE -> GET https://api.lumitrades.io/v1/check/batch?urls= ($0.008) - SEE THE TEST-BUY RECORD FOR ONE SELLER -> GET https://api.lumitrades.io/v1/trust/receipts?seller= ($0.005) - LOOK UP A SELLER FOR FREE -> GET https://api.lumitrades.io/v1/trust/vendors?url= (or ?domain= or ?payTo=) - VERIFY A LUMI RECEIPT -> POST https://api.lumitrades.io/v1/trust/receipts/verify (free) - PRICES AND PROOF, MACHINE-READABLE -> https://lumitrades.io/prices/index.json (copied from the live 402 quotes, dated) ## API docs (api.lumitrades.io) - [API home](https://api.lumitrades.io/): overview, prices and the 402 flow - [OpenAPI spec](https://api.lumitrades.io/openapi.json): every endpoint, parameter and response - [Agent skill (skill.md)](https://api.lumitrades.io/skill.md): step-by-step guide for an agent to pay and call the API - [x402 discovery](https://api.lumitrades.io/.well-known/x402): machine-readable list of paid resources and accepted payments - [MCP server](https://api.lumitrades.io/mcp): remote MCP (streamable HTTP); local option `npx -y lumi-trades-mcp` - [Trust methodology](https://api.lumitrades.io/v1/trust/methodology): how vendor trust scores are computed ## Pages - [For AI agents](https://lumitrades.io/agents/): what the API sells, prices, how to pay, MCP setup and FAQ - [x402 vendor trust list](https://lumitrades.io/trust/): automated quote checks and paid on-ledger test-buys of x402 endpoints - [How Lumi tests x402 sellers](https://lumitrades.io/how-it-works/): quote checks, paid test-buys, signed receipts, the 30-day score and the badge rule (also in es, pt, tr, ko, ja) - [Home](https://lumitrades.io/): Lumi: x402 seller trust you can verify. How the seller checks work, the trust list and the agent API (also in es, pt, tr, ko, ja) - [How the trust score works](https://lumitrades.io/trust-policy/#score): selection, no pay-to-rank, disclosures and the score method (also in es, pt, tr, ko, ja) - [Prices and proof](https://lumitrades.io/prices/): every price copied from the live x402 quotes, with the date checked and links to dated proof ([JSON](https://lumitrades.io/prices/index.json)) ## Prices (USD per call) ### Lumi Trust - `GET /v1/trust/check?url=`: x402 pay check: allow / warn / block with reasons, signed verdict, free - `GET /v1/verdict?url=`: Pre-payment check, one label (delivered in recent checks / check first / recent checks failed / not enough data), $0.01 per call - `GET /v1/trust/vendors/{id}/report`: Full report on one curated vendor (observation history, tx hashes, signed receipts), $0.02 per call - `GET /v1/trust/receipts?seller=`: Test-buy record for one seller (dated test-buys, tx hashes, signed receipts), $0.005 per call - `GET /v1/check/batch?urls=`: Check several sellers at once (up to 10 record-based labels, one signed answer), $0.008 per call - `GET /v1/trust/vendors`: Vendor trust list and seller lookup, free - `POST /v1/trust/receipts/verify`: Verify a signed test-buy receipt, free - `GET /v1/trust/check/high-value?url=&amount=`: the free check's label and score plus a live re-check and an amount-bound signed receipt, 0.5% of the amount, min $0.005, max $0.25 per call ## Seller monitoring and trust data feed (x402, 30-day plans, no auto-renew) - Watch Free: $0. 1 endpoint: a daily quote check, no test-buys - Watch: $5 per endpoint per 30 days. Hourly quote checks, a weekly test-buy, alerts, 30-day history and a status page - Watch Pro: $20 per endpoint per 30 days. Quote checks every 15 minutes, daily test-buys on up to 3 chains within the test-buy budget, schema and latency alerts, 90-day history and a monthly report signed by Lumi's wallet - Re-test pack: $6.50 one-time. 30 test-buys, used when you ask, valid 365 days - Founder pack: $5.00 one-time. 24 test-buys, valid 365 days; first 10 sellers, one per company - Audit: $99 one-time. One test-buy of every listed endpoint, with a full report signed by Lumi's wallet - Feed Free: $0. 1,000 lookups a month per key (wallet-signature signup), returns the verdict only - Feed credits: $1.50 per 1,000 lookups. Prepaid lookups on top of the free 1,000 a month; credits never expire - Feed: $99 per 30 days. 100,000 bulk lookups, delta feed, full evidence and receipts - Feed Pro: $199 per 30 days. 500,000 lookups, delta feed, licensed full snapshot export, status-change webhooks, receipts - [Seller monitoring](https://api.lumitrades.io/v1/monitor) · [Trust data feed](https://api.lumitrades.io/v1/feed) · [Feed license](https://api.lumitrades.io/v1/feed/license) ## Paying - Pay address: always take Lumi's pay address (payTo) from the live 402 payment response or /.well-known/x402, never from transaction history or a past transfer. ## Optional - [Vendor trust list as JSON](https://api.lumitrades.io/v1/trust/vendors): free - [Sitemap](https://lumitrades.io/sitemap.xml) - [Atom feed](https://lumitrades.io/feed.xml): Lumi's articles (English)