{"uid":"cap_U1hNMAeV6EFZM7lXBB7fo","slug":"x402-data-api-top-apis-by-payers-or-calls-50b04a03","name":"x402 Data API – Top APIs by Payers or Calls","description":"The x402 APIs with the most distinct payers (or calls) in the last 30 days, optionally within a category, with price and measured uptime.","url":"https://tb2s28fm0h8dkq2t.68r.lambda-web.us-east-1.on.aws/v1/market/top?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":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"by":{"enum":["payers","calls"],"type":"string","description":"ranking (default payers)"},"limit":{"type":"integer","description":"how many results (1-50, default 20)"},"category":{"enum":["crypto & on-chain","llm & ai","web & search","media","finance","social","geo & weather","developer tools","other"],"type":"string","description":"only this category"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","properties":{"by":{},"results":{}}}}}}},"responseSchema":{"type":"json","example":{"by":"payers","results":[{"resource":"https://api.example/v1/x","calls_30d":6956,"price_usd":0.005,"payers_30d":227,"uptime_30d":1}]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_hQSV2_rO6Et5RyPneYx29","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns the most popular x402-gated APIs ranked by distinct payers or total calls in the last 30 days, with price and uptime data, optionally filtered by category.","exampleAgentPrompt":"Show me the top 10 x402 APIs in the 'llm & ai' category ranked by number of distinct payers over the last 30 days, including their prices and uptime.","exampleUseCases":[{"title":"Discover popular AI APIs to integrate","prompt":"What are the top 5 x402 APIs in the LLM and AI category by number of distinct payers? I want to know their prices and uptime so I can decide which one to build on."},{"title":"Market research on x402 API activity","prompt":"Give me the top 20 x402 APIs ranked by total calls in the last 30 days across all categories — I want to understand which ones are getting the most usage overall."},{"title":"Find top crypto APIs for a trading bot","prompt":"Which x402 APIs in the 'crypto & on-chain' category have the most unique payers right now? Show me up to 15 results with pricing and uptime."}],"resultDescription":"A JSON array of up to 50 x402 API entries, each containing the resource URL, number of calls in the last 30 days, price in USD, number of distinct payers in the last 30 days, and measured uptime over 30 days, sorted by the requested ranking metric (payers or calls).","failureModes":["Invalid 'by' value (not 'payers' or 'calls') returns an error","Invalid 'limit' outside 1–50 range returns an error or defaults","Unknown or misspelled category enum value returns an error","No results returned if category has no qualifying APIs","Endpoint temporarily unavailable returns a 5xx error"],"whenToPreferThis":"Use this endpoint when you need a ranked leaderboard of x402-gated APIs by real usage (payers or call volume) with associated pricing and uptime metrics. It is ideal for API marketplace discovery, competitive analysis of x402 offerings, or helping developers find reliable and popular APIs to integrate. Prefer this over category or origin-specific endpoints when you want a broad, cross-market popularity ranking.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-25T12:31:09.655Z","isFirstParty":false,"canonicalSlug":"x402-data-api-top-apis-by-payers-or-calls-50b04a03"}