POST /task/submit — Submit

Submit a bypass task using the RiskByPass-compatible format. Drop-in replacement — change only the base URL.

https://riskbypass.com/task/submit
https://api.ucaptcha.net/task/submit

Your token field value becomes your uCaptcha API key.

Endpoint

POST https://api.ucaptcha.net/task/submit

Content-Type: application/json

Authentication

Include your uCaptcha API key as the token field in the request body, or pass it via the x-api-key header.

Parameters

Parameter	Type	Required	Description
`token`	string	Yes	Your uCaptcha API key
`task_type`	string	Yes	Task type (see table below)
`target_url`	string	Depends	URL of the target page
`site_key`	string	Depends	Site key / public key for the challenge
`proxy`	string	No	Proxy as `http://user:pass@host:port`
`action`	string	No	Action string (reCAPTCHA v3)
`enterprise`	boolean	No	Enterprise variant flag

Task Types

`task_type`	Challenge
`kasada`	Kasada ct cookie
`kasada_cd`	Kasada cd challenge
`kasada_tl_payload`	Kasada TL payload
`akamai`	Akamai _abck sensor data
`sec_cpt`	Akamai sec_cpt challenge
`sbsd`	Akamai sbsd/bm_sc
`perimeterx_invisible`	PerimeterX invisible
`perimeterx_hold`	PerimeterX hold page
`shape`	Shape/F5 anti-bot
`turnstile`	Cloudflare Turnstile
`cloudflare_waf`	Cloudflare WAF bypass
`hcaptcha`	hCaptcha standard
`hcaptcha_pro`	hCaptcha Enterprise/Pro
`recaptchav3`	Google reCAPTCHA v3
`funcaptcha`	FunCaptcha / Arkose Labs
`captchafox`	CaptchaFox
`datadome-invisible`	DataDome invisible
`datadome-device-check`	DataDome device check
`datadome-slider`	DataDome slider
`reese84`	Incapsula Reese84
`utmvc`	Incapsula _utmvc
`vercel`	Vercel bot challenge
`castle`	Castle token
`forter`	Forter token
`threatmetrix`	ThreatMetrix session
`aws`	AWS WAF token (invisible)

Request Example

{
  "token": "YOUR_API_KEY",
  "task_type": "kasada",
  "target_url": "https://example.com/api/checkout",
  "proxy": "http://user:pass@1.2.3.4:8080"
}

Response

Success

{
  "ok": true,
  "task_id": "550e8400-e29b-41d4-a716-446655440000"
}

Error

{
  "ok": false,
  "error": "Unsupported task_type: unknown_type"
}

Examples

Kasada (Python)

import requests

resp = requests.post("https://api.ucaptcha.net/task/submit", json={
    "token": "YOUR_API_KEY",
    "task_type": "kasada",
    "target_url": "https://example.com/api/endpoint",
    "proxy": "http://user:pass@1.2.3.4:8080"
})
task_id = resp.json()["task_id"]

Akamai (cURL)

curl -X POST https://api.ucaptcha.net/task/submit \
  -H "Content-Type: application/json" \
  -d '{
    "token": "YOUR_API_KEY",
    "task_type": "akamai",
    "target_url": "https://example.com"
  }'

hCaptcha (JavaScript)

const { task_id } = await fetch("https://api.ucaptcha.net/task/submit", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    token: "YOUR_API_KEY",
    task_type: "hcaptcha",
    target_url: "https://example.com",
    site_key: "YOUR_SITE_KEY"
  })
}).then(r => r.json());