How to integrate Twocaptcha MCP with Atomic Agent

Connect Atomic Agent to Twocaptcha MCP. Solve image captcha for login automation, bypass recaptcha on registration form, and more using natural language, with authentication handled for you.

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Api Key

2Captcha is a service for automated CAPTCHA solving in your apps. It helps developers bypass CAPTCHAs quickly and reliably.

5 Tools

Introduction

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Twocaptcha.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Twocaptcha account. See the Atomic Agent documentation for installation instructions.

Also integrate Twocaptcha with

How Atomic Agent connects to Twocaptcha

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Twocaptcha to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Twocaptcha. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Twocaptcha account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

What is the Twocaptcha MCP server, and what's possible with it?

The Twocaptcha MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Twocaptcha account. It provides structured and secure access to 2Captcha's automated CAPTCHA-solving services, so your agent can initiate, monitor, and manage CAPTCHA-solving tasks for a variety of applications on your behalf.

  • Automated CAPTCHA solving: Instantly create new CAPTCHA-solving tasks for supported CAPTCHA types, letting your agent bypass complex verification challenges.
  • CAPTCHA task management: Monitor the status of active CAPTCHA tasks and retrieve results as soon as they're solved.
  • Flexible CAPTCHA parameter handling: Pass specific parameters and configuration options to handle different CAPTCHA types, including image, audio, and reCAPTCHA challenges.
  • Integration with automation workflows: Seamlessly plug CAPTCHA-solving into larger automated processes, reducing manual intervention for form submissions, scraping, and more.
  • Error detection and retry logic: Enable your agent to handle failed CAPTCHA attempts and automatically trigger retries or alternative logic as needed.

Use Twocaptcha from Atomic Agent

With your account connected, ask Atomic Agent to work with Twocaptcha in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

TOOLS

Supported Tools

Every Twocaptcha action and event your agent gets out of the box.

Create CAPTCHA Task

Creates a new CAPTCHA-solving task and returns a taskId for retrieving results.

Get Account Balance

Tool to retrieve your 2Captcha account balance in USD.

Report Incorrect CAPTCHA

Report that a CAPTCHA solution was declined by the target website.

Report Incorrect Image Captcha

Report that an image captcha solution was incorrect.

Test Request Parameters

Debug method to verify how the API parses request parameters.

FAQ

Frequently asked questions

With a standalone Twocaptcha MCP server, the agents and LLMs can only access a fixed set of Twocaptcha tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Twocaptcha and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Atomic Agent fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Twocaptcha tools.

Yes, absolutely. You can configure which Twocaptcha scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Twocaptcha data and credentials are handled as safely as possible.

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