{"uid":"cap_-hZiqsuvUI0PU3AAFxm1l","slug":"fastapi-online-stablecoin-chains-lookup-be5fac11","name":"fastapi.online — Stablecoin Chains Lookup","description":"Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.","url":"https://api.fastapi.online/stablecoin-chains?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method","bodyType","body"],"properties":{"body":{"type":"object","required":[],"properties":{}},"type":{"type":"string","const":"http"},"method":{"enum":["POST"],"type":"string"},"bodyType":{"enum":["json","form-data","text"],"type":"string"}},"additionalProperties":false}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.001","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":"down","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.001/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.001","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_93NHCk7vSD2sb7W5gEBXM","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.001","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Returns a list of blockchain networks that support stablecoin payments (e.g. USDC) for the fastapi.online pay-per-call API","exampleAgentPrompt":"What blockchain networks support stablecoin payments on fastapi.online so I can figure out which chain to use for paying per call?","exampleUseCases":[{"title":"Choosing a payment chain before API use","prompt":"Before I start calling fastapi.online AI endpoints, can you check which blockchain networks they accept stablecoin payments on so I can fund the right wallet?"},{"title":"Validating a chain is supported","prompt":"I want to pay for fastapi.online inference calls using USDC on Base — can you confirm that chain is listed as supported?"},{"title":"Discovering new supported chains","prompt":"Has fastapi.online added any new blockchain networks for stablecoin payments recently? Can you pull the current list of supported chains?"}],"resultDescription":"A list of blockchain networks (chains) on which stablecoin payments (e.g. USDC) are accepted for accessing the fastapi.online pay-per-call API, including chain names and/or identifiers.","failureModes":["Empty or null response if no chains are configured","HTTP 402 if payment not provided before calling","HTTP 500 if the backend service is unavailable","Malformed JSON if the server is under load or misconfigured"],"whenToPreferThis":"Use this endpoint when you need to programmatically discover which blockchain networks are accepted for stablecoin payment before making inference calls on fastapi.online. Prefer this over hardcoding chain assumptions, especially if you need to dynamically select or validate a payment chain at runtime.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-12T15:27:12.201Z","isFirstParty":false,"canonicalSlug":"fastapi-online-stablecoin-chains-lookup-be5fac11"}