# fastapi.online — Coin Details Lookup

> fastapi.online — Coin Details Lookup is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status down (last checked 2026-10-18).

Looks up detailed information about a cryptocurrency by its ID

## Facts

- Endpoint: POST https://api.fastapi.online/coin-details?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fastapi-online-coin-details-lookup-4af8e23b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_90VOZTjgCqeuzcRRoIaAd

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fastapi-online-coin-details-lookup-4af8e23b -d '<json body>'
```

Example prompt: Can you fetch the coin details for Bitcoin — I need its current price, market cap, and other metadata by passing its coin ID?

## When to prefer this

Use this endpoint when you need detailed metadata for a single specific cryptocurrency identified by a known coin ID, and you want a pay-per-call model without signup. Prefer this over subscription APIs for low-frequency lookups or when crypto micropayment (USDC via x402) is the preferred billing method.

## Known failure modes

- Invalid or unrecognized coin ID returns an error or empty result
- Payment not included or insufficient USDC triggers a 402 Payment Required response
- Network or server unavailability results in a timeout or 5xx error
- Coin ID format mismatch (e.g. wrong casing or slug style) may return no data

## How this service works

Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&amp;A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding &amp; crypto utilities, date/time calculators, geo/coordinate math, math &amp; 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

Returns detailed information about a specific cryptocurrency identified by its ID, likely including price, market capitalization, trading volume, supply metrics, and other coin-level metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "id": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fastapi-online-coin-details-lookup-4af8e23b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.fastapi.online](https://www.zero.xyz/host/api.fastapi.online/llms.txt)