# 80 calls for $1

Prepaid for /v1/open. Pay $1 USDC on Base. Get an id. Send it as X-54ch10-Stack on later checks. One credit per check. 7 days. Unused credits expire.

## Buy

```bash
curl -si 'https://54ch10.uk/v1/stack?pack=1'
```

No auth is HTTP 402 plus an x402 envelope. Pay. The JSON includes the id.

## Use

```bash
curl -sS 'https://54ch10.uk/v1/open?q=https://example.com'   -H 'X-54ch10-Stack: YOUR_ID'
```

Same header on /v1/brief, /v1/whois, /v1/fetch, the rest of the suite.

## Packs

pack=1  $1    80    7 days
pack=5  $5    500   30 days
pack=25 $25   3000  90 days
pack=100 $100 15000 180 days