# BaseBrain CMC Price Lookup

> BaseBrain CMC Price Lookup is a paid API for AI agents from basebrain-ai.vercel.app, paid per call via x402, $0.12/call, status unknown (last checked 2026-10-17).

Fetches cryptocurrency price data from CoinMarketCap (CMC) via the BaseBrain AI proxy

## Facts

- Endpoint: POST https://basebrain-ai.vercel.app/api/cmc/price?utm_source=zero.xyz
- Price: $0.12/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebrain-cmc-price-lookup-b98ad335
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_prXsMJ0yGsesTSHh2Xz1J

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 basebrain-cmc-price-lookup-b98ad335 -d '<json body>'
```

Example prompt: What's the current price of Bitcoin according to CoinMarketCap?

## When to prefer this

Choose this endpoint when you need real-time or near-real-time cryptocurrency price data sourced from CoinMarketCap and want a simple pay-per-call proxy without managing your own CMC API key. It is well-suited for agents that need spot price lookups for one or more cryptocurrencies on demand.

## Known failure modes

- Invalid or unrecognized cryptocurrency symbol returns an error or empty result
- CoinMarketCap API rate limit reached upstream causing failure
- Payment not processed (x402 payment required) results in 402 response
- Network timeout from upstream CMC API
- Malformed request body returns 400 error

## How this service works

Generated by create next app

## Output

Returns a result object containing current cryptocurrency price data sourced from CoinMarketCap, including price values and related market information for the queried coin(s).

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "result": {
   "data": "example response"
  }
 },
 "properties": {
  "result": {
   "type": "object",
   "description": "API response data"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebrain-cmc-price-lookup-b98ad335/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from basebrain-ai.vercel.app](https://www.zero.xyz/host/basebrain-ai.vercel.app/llms.txt)