{"uid":"cap_LLjZ5T3esry8mNp5kBHPk","slug":"agent-deals-find-cheapest-working-x402-api-028c72e8","name":"Agent Deals – Find Cheapest Working x402 API","description":"Find the cheapest WORKING x402 service for a task. Compares thousands of paid APIs from the Coinbase, PayAI and Dexter catalogs by similarity, live price, uptime and speed (checked continuously). Send the header \"X-Free-Tier: 1\" for 20 free requests per day. /v1/check is always free.","url":"https://agent-deals.gm-tools.workers.dev/v1/best?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","required":["task"],"properties":{"task":{"type":"string","description":"What you need done, in plain words"},"limit":{"type":"number","description":"How many results (1-10, default 5)"},"network":{"type":"string","description":"Optional: only services accepting this network, e.g. eip155:8453"},"max_price_usd":{"type":"number","description":"Optional: ignore services above this price per call"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"task":"current weather for a city","results":[{"url":"https://example.com/weather","rank":1,"method":"GET","status":"up","price_usd":0.001,"uptime_pct":99.1}],"typical_price_usd":0.01,"saving_vs_typical_pct":90}},"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_nY1cA7rC2t-v01NX0NBMV","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":"Finds the cheapest, currently-working x402-compatible API for a given task by comparing price, uptime, and speed across thousands of paid APIs from Coinbase, PayAI, and Dexter catalogs","exampleAgentPrompt":"Find me the cheapest working API for converting text to speech — show the top 3 results, only consider services priced under $0.01 per call, and filter to Base network (eip155:8453) if possible.","exampleUseCases":[{"title":"Cheapest image generation API search","prompt":"I want to build an agent that generates product images but I don't want to overpay — find me the top 5 cheapest working x402 APIs for image generation, max $0.02 per call."},{"title":"Best-value weather data service","prompt":"What's the cheapest reliable x402 API for fetching current weather for a city? Show me the top 3 options by price, I only want ones that are currently up."},{"title":"Budget OCR API for document pipeline","prompt":"I'm automating a document scanning workflow and need to keep costs low — find me the cheapest working x402 API for OCR, limit results to 5, max price $0.005 per call."}],"resultDescription":"Returns a ranked list of up to 10 working x402-compatible API endpoints matching the requested task, each with its URL, HTTP method, current status, price in USD, and uptime percentage, plus a 'typical_price_usd' benchmark and a 'saving_vs_typical_pct' showing how much cheaper the best option is than the market average.","failureModes":["No matching services found for the given task query","All matching services currently show 'down' status","max_price_usd filter too restrictive — no results in budget","network filter eliminates all candidates","Invalid or missing 'task' query parameter returns 400","Service catalog temporarily unavailable — upstream aggregator error"],"whenToPreferThis":"Choose this endpoint when an AI agent needs to dynamically discover and select the most cost-effective x402 micropayment API for a given capability at runtime, especially when cost and uptime matter and the agent does not have a pre-hardcoded API in mind. Prefer this over manually curated lists when you want live price and uptime data, or when optimizing across the Coinbase, PayAI, and Dexter ecosystems simultaneously.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:36:56.053Z","isFirstParty":false,"canonicalSlug":"agent-deals-find-cheapest-working-x402-api-028c72e8"}