Five steps from zero to paid x402 calls against the Trust Index. Every core route has a free tier — your agent starts without a wallet and only pays when it wants depth.
payTo mismatches — listings whose payment wallet doesn't match their live 402 requirements. The free-forever wedge.
GET https://api.robotsshop.io/v0/mismatches?limit=10Index clock and replayable paid rows — stats, hashed settlements, leaderboard, wallets.
GET https://api.robotsshop.io/v0/stats GET /v0/settlements?limit=10&hashed=true GET /v0/leaderboard?limit=10Scored top-endpoints and delivery-aware search with free_trip=1 — no wallet required.
GET https://api.robotsshop.io/v0/top?n=5&free_trip=1 GET /v0/search?q=x402&limit=5&free_trip=1Hit any gated route without the free flag. Your client gets a 402 with exact payment requirements — pay, replay, get data.
GET https://api.robotsshop.io/v0/topWatch a seller for payTo drift — the wallet-swap alarm for agents that pay the same seller repeatedly.
seller-monitoring.html