Solver Cloudflare

Create Task Overview

Code
POST https://solvercf.com/token/extension/createTask

The createTask endpoint submits a new CAPTCHA solving task to the SolverCF network. Because CAPTCHAs require browser execution, tasks are processed asynchronously — the endpoint immediately returns a taskId, which you then poll via Get Task Result.

Select Your CAPTCHA Type

For specific parameter tables, requirements, and full code examples (cURL, Python, Node.js, C#) for each CAPTCHA, please refer to the dedicated guide:

CAPTCHA Type Task Type (type) Typical Output Documentation & Code Samples
Cloudflare Turnstile TurnstileTask Token Cloudflare Turnstile Guide →
Cloudflare Challenge TurnstileTask cf_clearance cookie or Token Cloudflare Challenge Guide →
Google reCAPTCHA v3 RecaptchaV3TaskProxyless / RecaptchaV3Task Token (score 0.7–0.9) reCAPTCHA v3 Guide →
Google reCAPTCHA v3 Enterprise RecaptchaV3EnterpriseTaskProxyless / RecaptchaV3EnterpriseTask Token (score 0.7–0.9) reCAPTCHA v3 Enterprise Guide →
Pre-solved Token Pool TurnstileTaskPool, RecaptchaV3TaskProxylessPool, etc. Instant token (< 100ms) Token Pool Guide →

Base Request Structure

All createTask requests share the same outer JSON envelope:

JSON
{
  "clientKey": "YOUR_CLIENT_KEY",
  "task": {
    "type": "TurnstileTask",
    "websiteUrl": "https://example.com",
    "websiteKey": "0x4AAAAAAAB__YGWiObopXheP"
  }
}
Field Type Required Description
clientKey string Yes Your account API key. View it anytime in your Dashboard.
task object Yes Payload containing specific parameters for the chosen CAPTCHA type.
softId integer No Accepted for CapMonster compatibility (ignored by SolverCF).
source string No Accepted for CapSolver compatibility (ignored by SolverCF).
version string No Accepted for CapSolver compatibility (ignored by SolverCF).

Response

Successful Creation (errorId: 0)

JSON
{
  "errorId": 0,
  "taskId": "7f8b9c2a-3d4e-5f6a-7b8c-9d0e1f2a3b4c",
  "status": "created"
}

Save the taskId and pass it to Get Task Result to retrieve the solved token or cookie.

Error Response (errorId: 1)

If validation fails (for example, missing websiteUrl or websiteKey):

JSON
{
  "errorId": 1,
  "errorCode": "ERROR_KEY_DOES_NOT_EXIST",
  "errorDescription": "clientKey is invalid or account not found",
  "status": "failed"
}

See Errors & Status Codes for the complete list of error codes.