How do I use the tokens?

Add x-kpsdk-ct and x-kpsdk-cd as HTTP headers on your requests. Set the KP_UIDz cookies. Use the exact same User-Agent.

x-kpsdk-cd is single-use. How do I get more?

The CT (client token) lasts ~30 minutes. For each subsequent request, you'll need a fresh CD. Create a new task with the same URL to get one.

Yes for most sites. Higher-security Kasada deployments may require your own residential proxy via the Task variant.

Kasada Bot Defense Solver

What is Kasada Bot Defense?

Kasada is a bot defense platform that uses a custom JavaScript VM (ips.js) to fingerprint browsers and generate proof-of-work tokens. Kasada uses two tokens: x-kpsdk-ct (client token, ~30 min lifetime) and x-kpsdk-cd (single-use per-request proof-of-work).

How It Works

Send Task

POST your KasadaCaptchaTask with the target URL and sitekey to our API. We'll queue it instantly.

We Solve

Capzy's proprietary solver returns the Kasada x-kpsdk-ct + x-kpsdk-cd tokens and KP_UIDz session cookies needed for protected requests. Designed for authorized testing and automation.

Get Token

Poll getTaskResult — when status is 'ready', the solution contains the token to inject into the target page.

Quick Integration

solve.py

import requests, time

API = "https://api.capzy.ai"
KEY = "capzy_your_key_here"

# Step 1: Create task
task = requests.post(f"{API}/createTask", json={
    "clientKey": KEY,
    "task": {
        "type": "KasadaCaptchaTask",
        "proxyPort": "8080",
        "proxyType": "http",
        "proxyLogin": "user",
        "websiteURL": "https://example.com/",
        "proxyAddress": "123.45.67.89",
        "proxyPassword": "pass"
    }
}).json()

task_id = task["taskId"]
print(f"Task created: {task_id}")

# Step 2: Poll for result
while True:
    result = requests.post(f"{API}/getTaskResult", json={
        "clientKey": KEY,
        "taskId": task_id
    }).json()

    if result["status"] == "ready":
        print("Solved!", result["solution"])
        break
    elif result["status"] == "failed":
        print("Failed:", result.get("errorDescription"))
        break

    time.sleep(1)

task parameters.

Proxy fields below are required for this captcha — userAgent must match the one you’ll use when submitting the resulting token.

fieldtyperequireddescription

typetypestringreqyesKasadaCaptchaTaskProxyLess or KasadaCaptchaTask

websiteURLtypestringreqyesAny URL on the Kasada-protected domain

proxyTypetypestringreqyesProxy protocol: http, https, socks4, or socks5

proxyAddresstypestringreqyesProxy IP address or hostname

proxyPorttypenumberreqyesProxy port number

proxyLogintypestringreqnoProxy username (if auth required)

proxyPasswordtypestringreqnoProxy password (if auth required)

userAgenttypestringreqyesUser-Agent string to use. Must match the UA you use when submitting the token

solution response.

fieldtypedescription

x-kpsdk-cttypestringClient token (~30 min lifetime, reusable)

x-kpsdk-cdtypestringClient data with proof-of-work (single-use per request)

cookiestypeobjectKP_UIDz and KP_UIDz-ssn session cookies

userAgenttypestringUser-Agent used during solve — must reuse for subsequent requests

expiresAttypenumberUnix timestamp when the CT expires

Features

~1.6 second solve time

Captures x-kpsdk-ct + x-kpsdk-cd + cookies

Capzy proprietary infrastructure — high-quality solves

Returns the full token chain (ct + cd + cookies) in one request

CT reusable for ~30 minutes

Required Task Type

KasadaCaptchaTask

Frequently Asked Questions

start solving kasada bot defense.

$0.10 in free credits — no card. ~250 free solves to test before you spend.

get free api key read docs

Kasada Bot Defense Solver, solved in 5.0s.