NeuroCaptcha

LeminTask

Parameters, request and response for Lemin solved through your proxy: the LeminTask task type.

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Lemin cropped captcha: a puzzle loaded from Lemin's servers with a CROPPED_… captcha id. The task is solved through your proxy, so the answer is issued for your IP address.

Price$1.20 per 1000 tasks ($0.0012 per task), only for solved tasks — pricing
Proxyrequired — your proxy
Queue in getQueueStats—
Also accepted as—

Parameters#

Fields of the task object in createTask:

type
stringrequired
LeminTask
websiteURL
stringrequired
Full address of the page with the captcha: http(s), up to 2048 characters, a public site.
captchaId
stringrequired
Lemin captcha id, e.g. CROPPED_3dfdd5c_d1872b526b794d83ba3b365eb15a200b. websiteKey is accepted as a fallback.
userAgent
string
User-Agent of the browser that will submit the token, up to 512 characters. It is returned in solution.userAgent.
cookies
string
Cookies of the target site for the solving browser: name=value; name2=value2, up to 8192 characters. Stored encrypted.
proxyType
string
http (default), https, socks4 or socks5.
proxyAddress
stringrequired
IP address or host name of the proxy. Private and local addresses are rejected.
proxyPort
integerrequired
Proxy port, 1–65535.
proxyLogin
string
Proxy login, up to 256 characters. Stored encrypted.
proxyPassword
string
Proxy password, up to 256 characters. Stored encrypted.

Request#

POST /createTask
{
  "clientKey": "YOUR_API_KEY",
  "task": {
    "type": "LeminTask",
    "websiteURL": "https://example.com/login",
    "captchaId": "CROPPED_3dfdd5c_d1872b526b794d83ba3b365eb15a200b",
    "proxyType": "http",
    "proxyAddress": "proxy.example.com",
    "proxyPort": 8080,
    "proxyLogin": "user",
    "proxyPassword": "pass"
  }
}

Complete example#

Create the task, poll every 2 seconds, print the solution:

import os
import time

import requests

API = "https://neurocaptcha.com"
KEY = os.environ["API_KEY"]


def call(method, payload):
    data = requests.post(f"{API}/{method}", json={"clientKey": KEY, **payload}, timeout=30).json()
    if data.get("errorId"):
        raise RuntimeError(f'{data["errorCode"]}: {data.get("errorDescription", "")}')
    return data


task = {
    "type": "LeminTask",
    "websiteURL": "https://example.com/login",
    "captchaId": "CROPPED_3dfdd5c_d1872b526b794d83ba3b365eb15a200b",
    "proxyType": "http",
    "proxyAddress": "proxy.example.com",
    "proxyPort": 8080,
    "proxyLogin": "user",
    "proxyPassword": "pass",
}

# 1. create the task: its price is held, not charged
task_id = call("createTask", {"task": task})["taskId"]

# 2. poll every 2 s; a failed task raises with its error code and costs nothing
deadline = time.time() + 300
while time.time() < deadline:
    time.sleep(2)
    result = call("getTaskResult", {"taskId": task_id})
    if result["status"] == "ready":
        print(result["solution"])
        break
else:
    raise TimeoutError("the task was not solved in time")

Response#

getTaskResult once the task is solved:

getTaskResult
{
  "errorId": 0,
  "status": "ready",
  "solution": {
    "token": "0x2b8f…",
    "challengeId": "c5d5e7a8-…",
    "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36"
  },
  "cost": "0.001200",
  "ip": "198.51.100.7",
  "createTime": 1793370000,
  "endTime": 1793370007,
  "solveCount": 1
}

Tips#

  • Find the CROPPED_… id in the page code or in the Lemin script request.
  • Send token and challengeId from the solution where the page sends Lemin's answer and challenge id.
  • Submit the token through the same proxy and with the same userAgent as in the task. See Proxies.