# Callback URL

Instead of polling for results, you can receive a POST callback when a task completes.

# Set callback URL

import { RecaptchaV2Task } from "node-capmonster"

const client = new RecaptchaV2Task("<api_key>")

client.setCallbackUrl("https://your-server.com/captcha-callback")

The callback payload is identical to the getTaskResult response. Your server must accept the request and respond within 2 seconds.

# Remove callback URL

client.unsetCallbackUrl()

The callback URL applies to all tasks created after it is set. Call unsetCallbackUrl() to stop receiving callbacks.