# Crysha

> Pay-per-use APIs for AI agents. Includes a 5-minute BTC reference price with multi-source aggregation. Inline payment via x402 (USDC on Base). This service is operated by an independent human developer.

## API

- [Price](https://api.crysha.com/price?ticker=BTC): GET 5-minute BTC reference price. $0.001 per call. JSON v2 with freshness and reliability signals.
- [x402 manifest](https://api.crysha.com/.well-known/x402): Machine-readable metadata, pricing, supported tickers.

## Human pages (HTML)

- [Status](https://www.crysha.com/status) · [JSON](https://api.crysha.com/status)
- [Methodology](https://www.crysha.com/methodology) · [JSON](https://api.crysha.com/methodology)
- [Terms](https://www.crysha.com/terms) · [JSON](https://api.crysha.com/terms)

## For agents

Use `@x402/fetch` or `@x402/axios` with a wallet signer. Request → 402 + payment instructions → retry with `X-PAYMENT` header → 200 + data.

Network: Base (eip155:8453) · Currency: USDC
Quickstart: https://docs.x402.org/getting-started/quickstart-for-buyers