POST /v1/solve is the normal call
2026-03-18 · Using the API
One image in, one answer out, in the same HTTP response.
POST /v1/solve is the call to make when you are about to submit a form. The body is JSON with image set to base64 and the options that match the picture. The answer is text.
Authenticate with Authorization: Bearer or X-API-Key. A missing or revoked key is 401 invalid_api_key. Revocation is visible within about 30 seconds.
402 insufficient_credits means the reserve failed. The body includes the balance. Buy a pack or wait for a refund you already reported. Do not retry in a loop.
The base URL is https://captchaocr.allvoraz.com. /v1/ is the version. It stays, so a later change can be /v2/ without breaking clients.
Ready to call it? Start with the quickstart, the API guide, or pricing.