{"uid":"cap_UaBLhXBxDRFdD34E0xD6F","slug":"hearth-x402-seller-scores-0abc5b3d","name":"Hearth x402 Seller Scores","description":"Hearth's seller ranking data, per category (search, scrape, llm, image, enrich, onchain, price, social, weather, geo, audio, security) or free-text q: blended rank score with its parts, 30d paying usage, Hearth's own purchase outcomes (valid-response rate, latency), nightly liveness/payTo probe, and public reputation (402index reliability/uptime, vet402 verdict and settlement record, x402-trust grade), plus drop reasons. $0.005. Free sample: /v1/free/seller-scores?category=search","url":"https://138-197-15-135.sslip.io/v1/x402/seller-scores?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["queryParams"],"properties":{"queryParams":{"type":"object","required":[],"properties":{"n":{"type":"string","description":"Sellers 1-20 (default 10)"},"q":{"type":"string","description":"Or free-text need"},"category":{"type":"string","description":"Category: search, scrape, llm, image, enrich, onchain, price, social, weather, geo, audio, security"},"maxPrice":{"type":"string","description":"Max seller price USD (default 0.05)"}}}}},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string","const":"json"},"example":{"type":"object","required":[],"properties":{"schema":{"type":["string","null"]},"sellers":{"type":["array","null"]},"category":{"type":["string","null"]}}}}}}},"responseSchema":{"type":"json","example":{"schema":"hearth.seller-scores.v1","sellers":[{"url":"https://seller.example/search","priceUsd":0.005,"rankScore":6.1,"scoreParts":{"trust":0.5,"index402":0.9,"relevanceAndUsage":4.9},"recommended":true}],"category":"search"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_w-1O5LWoWTW7s0Kd8hPp8","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns ranked x402 API seller scores with trust, relevance, and usage metrics for discovering safe, affordable pay-per-call API endpoints","exampleAgentPrompt":"Find me the top 5 trusted x402 search APIs priced under $0.02 each — I need something reliable for web search queries my agent will make repeatedly.","exampleUseCases":[{"title":"Discover cheap LLM inference APIs","prompt":"Find me up to 10 x402 LLM APIs priced under $0.03 each, ranked by trust and relevance — I want to pick the most recommended one for my AI pipeline."},{"title":"Vet a scraping API before paying","prompt":"Before my agent starts calling scrape endpoints, can you pull the Hearth seller scores for x402 scraping APIs under $0.05 so I can see which ones have the best trust scores?"},{"title":"Find onchain data feeds for a DeFi agent","prompt":"I need the top 3 x402 onchain data sellers under $0.01 — show me their rank scores and whether they're recommended so I can wire one into my Base chain agent."}],"resultDescription":"A JSON object with schema identifier 'hearth.seller-scores.v1', a category string, and an array of ranked sellers each containing the seller URL, price in USD, composite rank score, and sub-scores for trust, index402, and relevance/usage, plus a boolean recommended flag.","failureModes":["Invalid category value returns empty or error response","maxPrice set too low returns zero sellers","n outside 1-20 range may be clamped or rejected","No sellers indexed for the queried category returns empty sellers array","Network or upstream indexing lag may return stale scores"],"whenToPreferThis":"Use this endpoint when an AI agent needs to autonomously select a trustworthy, cost-effective x402 pay-per-call API from a ranked, scored list — especially before spending USDC on an unknown seller. Prefer it over manual API directories when you need trust signals, relevance scoring, and price filtering in a single call.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:40:04.840Z","isFirstParty":false,"canonicalSlug":"hearth-x402-seller-scores-0abc5b3d"}