Documentation

Two endpoints and a token

CaptchAPI speaks the anti-captcha contract: you POST JSON, HTTP is always 200, and you branch on errorId. If you already integrate CapSolver or Anti-Captcha, the migration is a base URL and a key.

New here?

The quickstart gets you from an empty account to a working token in two requests. Everything else on this page is reference you can come back to.

Read the quickstart

Getting started

Quickstart
From an empty account to a usable token, in two HTTP requests.
Authentication
How API keys work, where to put them, and what the rate limits are.

API reference

createTask
Submit a CAPTCHA to solve and receive a task id.
getTaskResult
Poll a task until it is ready, then read the token or cookies.
getBalance
Read your wallet balance, tier and current discount.

Reference

Task types
Every task.type value we accept, and which CAPTCHA family it maps to.
Error codes
Every error the API returns, what it means, and what to do about it.
Polling
How often to poll, when to give up, and how to run many solves at once.

Guides

Migrating from CapSolver or Anti-Captcha
What changes, what does not, and what to check before you cut over.

Something missing?

If a task type, a parameter or an error is not documented the way it actually behaves, tell us — that is a bug in the docs and we fix it.

Contact support

New here?

Getting started

Quickstart

Authentication

API reference

createTask

getTaskResult

getBalance

Reference

Task types

Error codes

Polling

Guides

Migrating from CapSolver or Anti-Captcha

Something missing?