{"uid":"cap_8i-HUvidBx4E7z1i7JWxA","slug":"x402-service-ranker-5f4278eb","name":"x402 Service Ranker","description":"A bundle of pay-per-call x402 resources for AI agents: /rank (best-service lookup by category), /snap (headless-browser screenshot/PDF/HTML), and /read (clean markdown extraction from any URL).","url":"https://x402-zadenworks.zaden-gaming.workers.dev/rank?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","required":["category"],"properties":{"category":{"type":"string"}}},"responseSchema":{"type":"object","required":["category","results"],"properties":{"results":{"type":"array","items":{"type":"object","properties":{"score":{"type":"number"},"calls30d":{"type":"number"},"resource":{"type":"string"},"description":{"type":"string"},"lastCalledAt":{"type":["string","null"]},"uniquePayers30d":{"type":"number"},"cheapestPriceUsd":{"type":["number","null"]}}}},"category":{"type":"string"},"generatedAt":{"type":["string","null"]}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"registry","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_7lX6LsSK7MN-rxRoFRrRy","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a ranked list of the best x402-enabled services for a given task category, scored by price, usage volume, and recency.","exampleAgentPrompt":"Can you rank the best x402 services available for web scraping — scored by price, usage volume, and how recently they've been active?","exampleUseCases":[{"title":"Find cheapest x402 API for web reading","prompt":"What are the top-ranked x402 services for reading and extracting content from web pages? I want them sorted so the most cost-effective and widely used ones come first."},{"title":"Discover x402 services for fact verification","prompt":"I need to pick an x402 service for verifying citations and facts against web pages — can you rank the available options by price, popularity, and recency so I can choose the best one?"},{"title":"Agent tool selection for screenshot tasks","prompt":"My AI agent needs to take full-page screenshots. Which x402 services handle that task, and how do they rank against each other on price and recent usage volume?"}],"resultDescription":"A ranked list of x402 services matching the requested task category, each scored and ordered by a composite of price competitiveness, usage volume, and recency. Includes service URLs and scoring breakdowns to help agents select the best-fit option.","failureModes":["Unknown or unsupported task category returns empty or error response","No x402 services indexed for the category yields an empty ranked list","Stale index data may cause recency scores to be outdated","Payment failure (insufficient USDC balance) returns 402 Payment Required","Malformed POST body returns 400 Bad Request"],"whenToPreferThis":"Use this endpoint when an AI agent needs to dynamically discover and select the best x402-compatible API for a given task at runtime, rather than hardcoding a service. Ideal for agent orchestrators that want to optimize for cost, popularity, or freshness across available x402 services before delegating a subtask.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-02T02:04:24.030Z","isFirstParty":false,"canonicalSlug":"x402-service-ranker-5f4278eb"}