SIGN UPLOG IN
X (Twitter)LinkedInGitHubDiscordYouTube

How to connect CapSolver to Claude

Connect Claude Web, Desktop and Cowork to CapSolver MCP. Create and poll a captcha solving task, check your capsolver account balance, and more using natural language, with authentication handled for you.

Get started for freeGet a demo
CapSolver logoCapSolver
Api Key

CapSolver is a CAPTCHA-solving service with APIs for recognition and token workflows. It helps developers automate CAPTCHA challenges with fast, programmable task handling.

16 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your CapSolver account to Claude via Composio Connect, enabling it to create and poll a CAPTCHA solving task, check your CapSolver account balance, submit feedback for an incorrect solution, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate CapSolver with

ChatGPTHermesAtomic Agent

Connecting CapSolver to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your CapSolver account

Back in Claude, ask it to connect to CapSolver or give it any CapSolver-related task.

For example, ask Claude to:

  • "Create and poll a CAPTCHA solving task"
  • "Check your CapSolver account balance"
  • "Submit feedback for an incorrect solution"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your CapSolver account is ready to use.

What is the CapSolver Claude Connector, and what's possible with it?

The CapSolver MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your CapSolver account. It provides structured and secure access to CAPTCHA recognition and token-solving workflows, so your agent can solve supported CAPTCHA challenges, recognize text from images, check task results and balances, and submit solution feedback on your behalf.

  • Solve supported CAPTCHA challenges: Have your agent solve reCAPTCHA, Cloudflare Turnstile, Cloudflare Challenge, AWS WAF, GeeTest, MTCaptcha, DataDome, and BotDeflector challenges.
  • Track asynchronous solutions: Let the agent wait for and retrieve CAPTCHA task results, with bounded polling for supported workflows.
  • Recognize CAPTCHA images: Direct your agent to classify AWS WAF or reCAPTCHA v2 images, recognize image text, or run supported vision modules for points, distances, angles, rectangles, and text.
  • Monitor usage and report outcomes: Instruct your agent to check the CapSolver balance and submit feedback when a previously returned solution token worked or failed.

Troubleshooting

1. Why does Claude not use the Composio connector for CapSolver?

The connector can show as connected, but Claude must use it in each CapSolver conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to CapSolver again.

2. Why does Claude show an MCP server error before CapSolver connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for CapSolver.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect CapSolver.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the CapSolver authorization link not work?

The Composio connector is one server. Your CapSolver account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the CapSolver connection.
  • Composio creates a fresh CapSolver authorization link.
  • Open that link in your browser and finish the CapSolver sign-in.

4. Why do CapSolver actions fail after they worked before?

The CapSolver connection can expire or lose permission.

  • Ask Claude to inspect the CapSolver connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the CapSolver account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in CapSolver.
  • If the action still fails with a permission error, check that the connected account has that permission in CapSolver itself.

5. How do I switch to a different CapSolver account?

Claude can manage the CapSolver connection for you.

  • Ask Claude to disconnect or delete the current CapSolver account.
  • Ask Claude to connect CapSolver again.
  • Open the new Composio authorization link for CapSolver.
  • Sign in with the other CapSolver account in the browser.
  • After the account connects, ask Claude to retry the CapSolver task.

6. Why is my CapSolver connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your CapSolver connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If CapSolver tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect CapSolver.
TOOLS

Supported Tools

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

Classify AWS WAF Image

Classify one AWS WAF challenge image or a nine-image grid and return the immediate geometric or object result.

Classify reCAPTCHA V2 Image

Classify a reCAPTCHA v2 challenge image for a documented object category and return the immediate selection result.

Get Balance

Return the connected CapSolver account balance and non-secret package metadata.

Get Task Result

Get one asynchronous CapSolver task result, or optionally poll it every three seconds for a bounded time.

Run Vision Engine

Run one documented CapSolver vision module and return its immediate points, distance, angle, rectangles, or text result.

Solve AWS WAF

Create one AWS WAF token task with or without a caller-supplied proxy and optionally poll every three seconds for a bounded time.

Solve BotDeflector

Create exactly one proxyless BotDeflector task from a target flow token and optionally poll every three seconds for a bounded time.

Solve Cloudflare Challenge

Create one Cloudflare challenge task through a sticky caller-supplied proxy and optionally poll every three seconds for bounded clearance output.

Solve Cloudflare Turnstile

Create one proxyless Cloudflare Turnstile task and optionally poll every three seconds for a bounded time.

Solve DataDome

Create exactly one DataDome slider task with a caller-supplied proxy and optionally wait a bounded time for its solution cookie.

Solve GeeTest

Create one GeeTest v3 or v4 token task and optionally poll every three seconds for a bounded time.

Solve Image To Text

Recognize text or number answers from base64-encoded images and return the immediate recognition result.

Solve MTCaptcha

Create one proxyless or caller-proxied MTCaptcha token task and optionally poll every three seconds for a bounded time.

Solve reCAPTCHA V2

Solve one standard or enterprise reCAPTCHA v2 challenge in task or synchronous mode.

Solve reCAPTCHA V3

Solve a standard, enterprise, or M1 reCAPTCHA v3 challenge in task or synchronous mode.

Submit Task Feedback

Report whether a previously returned CapSolver token worked, using only the documented minimal task and result fields.

FRAMEWORKS

How to build CapSolver MCP Agent with another framework

ChatGPT logo

ChatGPT

Use CapSolver MCP with ChatGPT

Hermes logo

Hermes

Use CapSolver MCP with Hermes

Atomic Agent logo

Atomic Agent

Use CapSolver MCP with Atomic Agent

FAQ

Frequently asked questions

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

Yes, you can. Claude Cowork 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 CapSolver tools.

Yes, absolutely. You can configure which CapSolver 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 CapSolver data and credentials are handled as safely as possible.

Start with CapSolver.It takes 30 seconds.

Managed auth, hosted MCP servers, and every CapSolver tool your agent needs.Free to start.

Start building