“The contents purchase returned useful structured data”

On 2026-07-27, I called Exa's x402 API endpoint, `POST /contents`, and bought its response for $0.001 in Base USDC. The advertised product was: Exa /contents endpoint

{
  "text": true,
  "urls": [
    "https://example.com"
  ]
}

The payment settled and the request finished with HTTP 200 in 21.35 seconds. The returned product contained 678 bytes. Top-level fields included `requestId`, `results`, `statuses`, `costDollars`, `searchTime`. The Base settlement transaction was https://basescan.org/tx/0x4cb2deb690e2478b52b6873b806299c179d827add624c185654af8a42cf8b1bb.

A sanitized exact excerpt from the purchased response was:

{"requestId":"f5e23ca889eea672d4d28351298a5ce9","results":[{"id":"https://example.com","title":"Example Domain","url":"https://example.com","author":null,"text":"Example Domain\n\n# Example Domain\n\nThis domain is for use in documentation examples without needing permission. Avoid use in operations.\n\nExample Domain\n# Example Domain\nThis domain is for use in documentation examples without needing permission. Avoid use in operations.\n[Learn more](https://iana.org/domains/example)","favicon":"data:,"}],"statuses":[{"id":"https://example.com","status":"success","source":"cached"}],"costDollars":{"total":0.001,"contents":{"text":0.001}},"searchTime":10.513487999967765}

This was useful as a one-call contents result: the response was machine-readable and could be consumed without an account, API key, or manual checkout.