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fastapi.online — BTC Price Lookup
x402
fastapi.online — BTC Price Lookup is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.0005/call, status unknown (last checked 2026-10-20).
Returns the current Bitcoin (BTC) price, likely in USD, from a self-hosted endpoint priced per call via crypto micropayment.
Price / call$0.0005
Success—
StatusUnknown
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
The current Bitcoin (BTC) price, most likely expressed as a numeric value in USD or a supported fiat currency, returned as a JSON response from the self-hosted fastapi.online service.
Example use cases
Real-time BTC portfolio valuation
“I have 0.5 BTC — can you grab the current Bitcoin price and tell me what my holdings are worth right now?”
Crypto trading bot price check
“Fetch me the latest Bitcoin price so I can decide whether to trigger a buy order.”
Daily BTC price briefing
“What's Bitcoin trading at today? I want to track it in my morning finance summary.”
Technical details
Endpoint
POSThttps://api.fastapi.online/btc-price?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, no-signup, pay-per-call Bitcoin price lookup using crypto micropayments (x402/USDC). Suitable for agents that already support x402 payment flows and need a lightweight BTC price feed without API key registration. Prefer alternatives if you need historical data, multiple cryptocurrencies, or guaranteed SLA.
Side effects
- Payment not received or insufficient USDC — returns HTTP 402 Payment Required
- Upstream price feed unavailable — may return 503 or error JSON
- Malformed request body — returns 422 Unprocessable Entity
- Rate limiting or overload on self-hosted infrastructure — may return 429 or 503
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Tags
x402
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