{"uid":"cap_Pepbp972z5AiiIUHzHo7y","slug":"annalist-x402-service-checks-top-ranked-d4255750","name":"Annalist x402 Service Checks - Top Ranked","description":"Signed data for AI agents, paid per call over x402. Hyperliquid crowd state, smart money and liquidations with what historically happened next, plus independent checks of x402 services and MCP servers.","url":"https://api.annalist.dev/v1/checks/top?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"data":{"most_organic_payers":[{"host":"api.example.com","grade":"A","organic_payers_30d":412}]}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_VFIFWRahktaKvFjSVavFZ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a ranked list of x402 services graded by organic payer activity and quality signals over the past 30 days","exampleAgentPrompt":"Show me the top-ranked x402 services by organic payer activity so I can find trustworthy APIs for my agent to call — I want to see their quality grades and how many real payers each had in the last 30 days.","exampleUseCases":[{"title":"Vetting APIs before agent integration","prompt":"Before I let my agent start calling x402 APIs, can you pull the Annalist top checks list and show me which services have an A grade and over 100 organic payers in the last 30 days?"},{"title":"Discovering new paid-per-call services","prompt":"I want to find popular x402 APIs my agent could use — what does Annalist's top list say right now in terms of which hosts have the most genuine paying users?"},{"title":"Monitoring agent economy health","prompt":"Can you fetch the Annalist top x402 service rankings and flag any hosts that have dropped in organic payer count compared to what I'd expect from a high-grade service?"}],"resultDescription":"A JSON object containing a ranked list of x402 service hosts, each with a quality grade (e.g. A, B, C) and a count of organic payers over the past 30 days. Useful for identifying trustworthy, actively-used paid-per-call APIs.","failureModes":["Payment not received or x402 handshake fails — returns 402 with payment details","No data available for requested filter properties — returns empty array","Service temporarily unavailable — returns 5xx error","Invalid query parameters — returns 400 with error message"],"whenToPreferThis":"Choose this endpoint when you need an independent, usage-verified ranking of x402 services rather than a self-reported directory listing. It is especially valuable when vetting APIs before integrating them into an autonomous agent, since organic payer counts and letter grades reflect real-world adoption rather than marketing claims.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-14T06:43:14.960Z","isFirstParty":false,"canonicalSlug":"annalist-x402-service-checks-top-ranked-d4255750"}