{"uid":"cap_eE3fBOfsvblAZRIa0qbX6","slug":"x402-data-api-top-apis-by-payers-or-calls-c2a17686","name":"x402 Data API – Top APIs by Payers or Calls","description":"Data about the x402 market: the CDP Bazaar's listings, sellers, prices and categories, new listings and price changes from snapshots every 6 hours, uptime we measure for every paid listing, and x402 spending of any wallet and revenue of any seller on Base.","url":"https://data.kagurazaka.dev/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_vgDg3VEi4AK_fVwfqpCJq","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 top-ranked x402 APIs 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 distinct payers over the last 30 days, including their prices and uptime.","exampleUseCases":[{"title":"Discover trending AI APIs","prompt":"What are the top 10 x402 APIs in the LLM & AI category right now, ranked by how many distinct users have paid for them in the last 30 days?"},{"title":"Find most-called APIs for integration","prompt":"List the top 20 x402 APIs ranked by total calls over the last 30 days — I want to see which ones are getting the heaviest usage regardless of category."},{"title":"Scout popular finance APIs","prompt":"Can you pull the top 5 x402 finance APIs sorted by number of distinct payers, with their prices and uptime? I'm evaluating which ones to build on."}],"resultDescription":"A JSON object containing the ranking metric used ('by': 'payers' or 'calls') and an array of results, each with the API 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.","failureModes":["Invalid 'by' value (not 'payers' or 'calls') returns a validation error","limit out of range (< 1 or > 50) returns an error","Invalid category enum value returns an error","Payment failure or insufficient USDC balance returns 402","Service unavailable returns 5xx"],"whenToPreferThis":"Use this endpoint when you need a ranked leaderboard of x402 APIs by adoption (payers) or usage volume (calls), especially when you want to discover which APIs are most actively used in the x402 ecosystem. Prefer this over the uptime-ranked endpoint when popularity/demand is the primary signal, and over the origins endpoint when you want cross-seller rankings rather than a single seller's portfolio.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:34:32.290Z","isFirstParty":false,"canonicalSlug":"x402-data-api-top-apis-by-payers-or-calls-c2a17686"}