# BaseBuilder Crypto Exchange Convert

> BaseBuilder Crypto Exchange Convert is a paid API for AI agents from bb-crypto.vercel.app, paid per call via x402, $0.058331/call, status unknown (last checked 2026-09-14).

Converts a specified amount from one cryptocurrency to another using current exchange rates

## Facts

- Endpoint: POST https://bb-crypto.vercel.app/api/exchange/convert
- Price: $0.058331/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/basebuilder-crypto-exchange-convert-80a1525a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-ukgi4DykqmkU98-8euMC

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 basebuilder-crypto-exchange-convert-80a1525a -d '<json body>'
```

Example prompt: How much ETH would I get if I convert 0.5 BTC right now using the BaseBuilder Crypto exchange converter?

## When to prefer this

Use this endpoint when you need to compute the equivalent value of one cryptocurrency in terms of another using live exchange rates, especially within a workflow that already uses the BaseBuilder Crypto API hub for other crypto data needs

## Known failure modes

- Unsupported cryptocurrency symbol returns error
- Invalid or zero amount returns validation error
- Payment not received returns 402 Payment Required
- Exchange rate data unavailable returns service error
- Malformed request body returns 400 Bad Request

## How this service works

BaseBuilder Crypto API hub - 26 paid endpoints

## Output

Returns the converted cryptocurrency amount and the applied exchange rate between the source and target crypto assets

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/basebuilder-crypto-exchange-convert-80a1525a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from bb-crypto.vercel.app](https://www.zero.xyz/host/bb-crypto.vercel.app/llms.txt)