{"uid":"cap_wBbKrX2-dpefjvl6DdQxt","slug":"apex-faucet-x402-top-sellers-leaderboard-fdd520c3","name":"APEX Faucet — X402 Top Sellers Leaderboard","description":"Free APEX on X1, and free USDC plus APEX on Arc, three times a day. No gas, no sign-up. Plus a swap, a screener, APEX City and token checks.","url":"https://apexfaucet.xyz/api/x402/x402-top-sellers?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":{"limit":{"type":"integer","maximum":50,"minimum":1,"description":"How many sellers to return (1-50, default 25)."}}}}},"output":{"type":"object"}}},"responseSchema":{"type":"json","schema":{"type":"object","properties":{"ok":{"type":"boolean"},"data":{"type":"object"},"paid":{"type":"number"}}},"example":{"ok":true,"data":{"ok":true,"readAt":"2026-10-09T17:24:10.841Z","sellers":[{"rank":1,"seller":"www.ax1.vc","itsCalls":392794,"listings":1,"networks":{},"priceUsd":{},"callsSummed":392794,"payersSummed":4710,"callsPerPayer":83.4,"strongestListing":"https://www.ax1.vc/api/dashboard/q-verdict/resource","returningBuyersFloor":4710,"listingsWithReturningBuyers":1}],"howToRead":"returningBuyersFloor is the payer count of the seller's strongest listing whose …","listingsRead":35125,"sellersWithReturningBuyers":499},"paid":0.01}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_WdszLmM-gaLvM8N85hV4H","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a ranked leaderboard of the top sellers on the X402 marketplace, sorted by buyer count and call volume, with up to 50 results.","exampleAgentPrompt":"Pull the top 25 sellers from the X402 marketplace leaderboard so I can see which vendors have the most returning buyers and highest call volumes.","exampleUseCases":[{"title":"Identify dominant X402 marketplace vendors","prompt":"Show me the top 50 sellers on the X402 marketplace — I want to see who has the most calls and the strongest returning buyer counts so I can figure out who the dominant players are."},{"title":"Research X402 ecosystem for investment","prompt":"Get me the top 20 X402 sellers ranked by returning buyers — I'm trying to understand which APIs in this ecosystem are actually generating sticky, repeat usage."},{"title":"Competitive benchmarking on X402","prompt":"Fetch the X402 top sellers leaderboard, top 30 results, so I can benchmark a specific seller's call volume and buyer count against the rest of the market."}],"resultDescription":"A JSON object with ok: true, a data object containing a ranked array of sellers (each with rank, domain, total calls, listing count, price data, calls per payer, returning buyers floor, and strongest listing URL), plus metadata like listingsRead, sellersWithReturningBuyers, and a howToRead explanation string. Also includes paid: 0.01 indicating the USDC cost charged.","failureModes":["limit parameter out of range (must be 1-50) returns validation error","Payment failure or insufficient USDC balance prevents access","Stale data if the leaderboard index hasn't been recently updated","Empty or partial results if fewer sellers exist than requested limit","Network timeout on large limit values"],"whenToPreferThis":"Use this endpoint when you need a ranked, quantitative view of the X402 seller ecosystem — specifically when comparing sellers by buyer retention (returning buyers), call volume, or listing strength. Prefer this over general web searches when you need structured, up-to-date marketplace data with numeric metrics rather than subjective reviews.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T00:38:56.188Z","isFirstParty":false,"canonicalSlug":"apex-faucet-x402-top-sellers-leaderboard-fdd520c3"}