# How to connect CapSolver to Claude ```json { "title": "How to connect CapSolver to Claude", "toolkit": "CapSolver", "toolkit_slug": "capsolver", "framework": "Claude Cowork", "framework_slug": "claude-cowork", "url": "https://composio.dev/toolkits/capsolver/framework/claude-cowork", "markdown_url": "https://composio.dev/toolkits/capsolver/framework/claude-cowork.md", "updated_at": "2026-10-21T05:31:21.185Z" } ``` ## 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 - [ChatGPT](https://composio.dev/toolkits/capsolver/framework/chatgpt) - [Hermes](https://composio.dev/toolkits/capsolver/framework/hermes-agent) - [Atomic Agent](https://composio.dev/toolkits/capsolver/framework/atomic-agent) ## Connect CapSolver to Claude Cowork ### 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](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Composio&connectorUrl=https%3A%2F%2Fconnect.composio.dev%2Fmcp) ### Add manually In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top. Click Add custom connector and paste in the Composio MCP server URL: ```bash https://connect.composio.dev/mcp ``` ## What is the CapSolver MCP server, 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. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `CAPSOLVER_CLASSIFY_AWS_WAF` | Classify AWS WAF Image | Classify one AWS WAF challenge image or a nine-image grid and return the immediate geometric or object result. This is a paid CapSolver operation. | | `CAPSOLVER_CLASSIFY_RECAPTCHA_V2` | Classify reCAPTCHA V2 Image | Classify a reCAPTCHA v2 challenge image for a documented object category and return the immediate selection result. This is a paid CapSolver operation. | | `CAPSOLVER_GET_BALANCE` | Get Balance | Return the connected CapSolver account balance and non-secret package metadata. Package access tokens are never returned. | | `CAPSOLVER_GET_TASK_RESULT` | Get Task Result | Get one asynchronous CapSolver task result, or optionally poll it every three seconds for a bounded time. This action never creates or retries a task. | | `CAPSOLVER_RUN_VISION_ENGINE` | Run Vision Engine | Run one documented CapSolver vision module and return its immediate points, distance, angle, rectangles, or text result. This is a paid operation. | | `CAPSOLVER_SOLVE_AWS_WAF` | 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. Returns the task ID when processing continues. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_BOTDEFLECTOR` | Solve BotDeflector | Create exactly one proxyless BotDeflector task from a target flow token and optionally poll every three seconds for a bounded time. Returns the task ID when processing continues. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_CLOUDFLARE_CHALLENGE` | Solve Cloudflare Challenge | Create one Cloudflare challenge task through a sticky caller-supplied proxy and optionally poll every three seconds for bounded clearance output. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_CLOUDFLARE_TURNSTILE` | Solve Cloudflare Turnstile | Create one proxyless Cloudflare Turnstile task and optionally poll every three seconds for a bounded time. Returns the task ID for continuation. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_DATADOME` | Solve DataDome | Create exactly one DataDome slider task with a caller-supplied proxy and optionally wait a bounded time for its solution cookie. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_GEETEST` | Solve GeeTest | Create one GeeTest v3 or v4 token task and optionally poll every three seconds for a bounded time. Returns the task ID when processing continues. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_IMAGE_TO_TEXT` | Solve Image To Text | Recognize text or number answers from base64-encoded images and return the immediate recognition result. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_MTCAPTCHA` | Solve MTCaptcha | Create one proxyless or caller-proxied MTCaptcha token task and optionally poll every three seconds for a bounded time. Returns the task ID when processing continues. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_RECAPTCHA_V2` | Solve reCAPTCHA V2 | Solve one standard or enterprise reCAPTCHA v2 challenge in task or synchronous mode. Task mode creates exactly one task and may poll for a bounded time; synchronous mode calls getToken exactly once. This is a paid CapSolver operation. | | `CAPSOLVER_SOLVE_RECAPTCHA_V3` | Solve reCAPTCHA V3 | Solve a standard, enterprise, or M1 reCAPTCHA v3 challenge in task or synchronous mode. Task mode creates exactly one task and may poll for a bounded time. Synchronous mode calls getToken exactly once and rejects M1. M1 variants are high-cost and require provider and site-specific enablement. | | `CAPSOLVER_SUBMIT_TASK_FEEDBACK` | Submit Task Feedback | Report whether a previously returned CapSolver token worked, using only the documented minimal task and result fields. | ## Supported Triggers None listed. ## 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. ## Creating MCP Server - Stand-alone vs Composio SDK The CapSolver MCP server connects Claude Web, Desktop, and Cowork to your CapSolver account through Composio. Once connected, Claude can use the available CapSolver tools and triggers to complete tasks on your behalf. ## Complete Code None listed. ## How to build CapSolver MCP Agent with another framework - [ChatGPT](https://composio.dev/toolkits/capsolver/framework/chatgpt) - [Hermes](https://composio.dev/toolkits/capsolver/framework/hermes-agent) - [Atomic Agent](https://composio.dev/toolkits/capsolver/framework/atomic-agent) ## Related Toolkits - [Supabase](https://composio.dev/toolkits/supabase) - Supabase is an open-source backend platform offering scalable Postgres databases, authentication, storage, and real-time APIs. It lets developers build modern apps without managing infrastructure. - [Codeinterpreter](https://composio.dev/toolkits/codeinterpreter) - Codeinterpreter is a Python-based coding environment with built-in data analysis and visualization. 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It makes it easy for teams to organize data and automate workflows without writing code. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and CapSolver MCP? 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. ### Can I use Tool Router MCP with Claude Cowork? 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. ### Can I manage the permissions and scopes for CapSolver while using Tool Router? 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. ### How safe is my data with Composio Tool Router? 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. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)