TencentSelectObjectTask - OMOCaptcha

Select-object captcha is a common image challenge where the user must pick the tiles that match the given question (or anchor image) from a grid.

1. Create task

Endpoint: POST https://api.omocaptcha.com/v2/createTask

Parameters

Parameter	Type	Required	Description
`clientKey`	`String`	✅	Your account API key.
`task.type`	`String`	✅	`TencentSelectObjectTask`
`task.imageBase64`	`String`	✅	Base64-encoded captcha image.
`task.question`	`String`	✅	Captcha question (e.g. `choose the most alike`).
`task.anchor`	`String`	❌	Base64-encoded anchor image (if present), usually shown next to the question.

Request example

curl -X POST https://api.omocaptcha.com/v2/createTask \
  -H "Content-Type: application/json" \
  -d '{
    "clientKey": "YOUR_API_KEY",
    "task": {
      "type": "TencentSelectObjectTask",
      "imageBase64": "BASE64_IMAGE",
      "question": "choose the most alike",
      "anchor": "BASE64_ANCHOR"
    }
  }'

const res = await fetch("https://api.omocaptcha.com/v2/createTask", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    clientKey: "YOUR_API_KEY",
    task: {
      type: "TencentSelectObjectTask",
      imageBase64: "BASE64_IMAGE",
      question: "choose the most alike",
      anchor: "BASE64_ANCHOR"
    }
  })
});
console.log(await res.json());

import requests

res = requests.post("https://api.omocaptcha.com/v2/createTask", json={
    "clientKey": "YOUR_API_KEY",
    "task": {
        "type": "TencentSelectObjectTask",
        "imageBase64": "BASE64_IMAGE",
        "question": "choose the most alike",
        "anchor": "BASE64_ANCHOR"
    }
})
print(res.json())

<?php
$ch = curl_init("https://api.omocaptcha.com/v2/createTask");
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["Content-Type: application/json"]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
  "clientKey" => "YOUR_API_KEY",
  "task" => [
    "type" => "TencentSelectObjectTask",
    "imageBase64" => "BASE64_IMAGE",
    "question" => "choose the most alike",
    "anchor" => "BASE64_ANCHOR"
  ]
]));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
echo curl_exec($ch);

Response example

{
  "errorId": 0,
  "taskId": "49f9f60a-c809-4af0-93c0-0409b72e67e0"
}

2. Get task result

Endpoint: POST https://api.omocaptcha.com/v2/getTaskResult

{
  "clientKey": "YOUR_API_KEY",
  "taskId": "49f9f60a-c809-4af0-93c0-0409b72e67e0"
}

Response example

{
  "errorId": 0,
  "status": "ready",
  "solution": {
    "objects": [4, 5]
  }
}

solution.objects is a list of zero-based tile indices to click, counted left-to-right, top-to-bottom.