Install the Kotlin SDK
2026-04-11 · SDKs
The Kotlin client installs from this site, not from a public registry. the same Maven repository.
The Kotlin SDK is generated from the same OpenAPI spec as the others, so solve, batch, submit, balance, alerts, and report use the same fields. The package is com.allvoraz:captcha-ocr-kotlin. You need Kotlin on the JVM.
Install it from https://captchaocr.allvoraz.com/sdk, with the command on the Kotlin SDK page. No PyPI, npm, Maven Central, or other public account is required. The exact command is on that page so this guide does not drift from the package file.
Point the host at https://captchaocr.allvoraz.com and pass the API key from the environment. Then send numeric, length, math, and hindi only when the image needs them.
If install fails, open the URL in the command. A 404 means the file is not on the server. A 200 with a small file means you can install. The source zip for Kotlin is linked from the same SDK page.
Ready to call it? Start with the quickstart, the API guide, or pricing.