# NanoTracker

> NanoTracker (https://nanotracker.app) shows whether a Nano (XNO) wallet is in the
> plus or in the minus. For agents there is a small HTTP API: daily XNO rates in
> 24 currencies for free, and the plus/minus of one wallet for USD 0.002 per call,
> paid in Nano (XNO) via x402. No account, no API key.

## Endpoints

- [Rate of one day](https://nanotracker.app/api/v1/kurs?datum=2024-03-04&waehrung=EUR):
  `GET /api/v1/kurs?datum=YYYY-MM-DD&waehrung=EUR`, free. Without `datum`: current rate.
- [Rates of a period](https://nanotracker.app/api/v1/kurse?von=2024-03-01&bis=2024-03-31&waehrung=USD):
  `GET /api/v1/kurse?von=YYYY-MM-DD&bis=YYYY-MM-DD&waehrung=USD`, free, at most 31 days per call.
- Wallet plus/minus: `POST /api/v1/wallet-pnl` with JSON `{"adresse": "nano_..."}`.
  USD 0.002 per call, paid in XNO at the day's rate. First call per IP free.

Rates are for use inside your own calculations, no redistribution. Each answer names
its source (`quelle`): Binance daily close XNO/USDT, Yahoo Finance for currencies.

## How to pay

Call `/api/v1/wallet-pnl` without payment: HTTP 402 with `payTo`, `amountXNO`,
`amountUSD` (also headers `X-Payment-Address`, `X-Payment-Amount-XNO`). Send the XNO to
nano_19zs7s5cwnccx7nqyhukxhuxnjqk14xzicbhue1o9kn6n3bescfc8rbpwmdg, then repeat the request
with header `X-Payment-Hash: <send block hash>`. The block must be confirmed, at most
24 hours old, and each hash works once. Same hash + same address within 24 hours returns
the result again.

## More

- [Page for agents](https://nanotracker.app/agents/)
- [OpenAPI](https://nanotracker.app/openapi.json)
- [Agent payment card](https://nanotracker.app/.well-known/agent-payment.json)
- Operator's other agent services: https://feeless.money/llms.txt

Not tax advice.