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fastapi.online — Stablecoin Chains Lookup
x402
fastapi.online — Stablecoin Chains Lookup is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status down (last checked 2026-10-12).
Returns a list of blockchain networks that support stablecoin payments (e.g. USDC) for the fastapi.online pay-per-call API
Price / call$0.001
Success—
StatusDown
How this service works
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.
Output
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.
Example use cases
Choosing a payment chain before API use
“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?”
Validating a chain is supported
“I want to pay for fastapi.online inference calls using USDC on Base — can you confirm that chain is listed as supported?”
Discovering new supported chains
“Has fastapi.online added any new blockchain networks for stablecoin payments recently? Can you pull the current list of supported chains?”
Technical details
Endpoint
POSThttps://api.fastapi.online/stablecoin-chains?utm_source=zero.xyzWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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