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How to connect Cats to Claude

Connect Claude Web, Desktop and Cowork to Cats MCP. Show me five random cat images, list popular cat breeds with photos, and more using natural language, with authentication handled for you.

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Cats is an API with a huge library of cat images, breed data, and cat facts. It makes finding adorable cat photos and trivia effortless for your apps and users.

18 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 Cats account to Claude via Composio Connect, enabling it to show me five random cat images, list popular cat breeds with photos, find unique cat facts for trivia, 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 Cats with

OpenAI Agents SDKClaude Agent SDKClaude CodeCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Cats 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 Cats account

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

For example, ask Claude to:

  • "Show me five random cat images"
  • "List popular cat breeds with photos"
  • "Find unique cat facts for trivia"

It will prompt you to authenticate and authorize access.

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

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

The Cats MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Cats account. It provides structured and secure access to a wide collection of cat images, breed information, and fun feline facts, so your agent can fetch cat data, browse curated cat images, and pull breed details on your behalf.

  • Portals listing for cat resources: Instruct your agent to list and browse all available cat-related portals, making it easy to explore organized collections of cat images and data.
  • Metadata exploration with pagination: Have your agent efficiently page through vast cat collections, ensuring you can access just the right portal or dataset without missing a thing.
  • On-demand cat image discovery: Let your agent find and retrieve high-quality cat images from the API’s large, curated library—perfect for enrichment or just a dose of cuteness.
  • Access to detailed breed and fact data: Ask your agent to pull up detailed info on cat breeds and fun facts, making it a handy assistant for both research and entertainment.

Troubleshooting

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

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

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

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

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

  • 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 Cats.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Cats authorization link not work?

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

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

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

The Cats connection can expire or lose permission.

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

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

Claude can manage the Cats connection for you.

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

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

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

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Cats 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 Cats.
TOOLS

Supported Tools

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

Create Favourite

Tool to save an image as a favourite to your account.

Create Vote

Tool to vote on a cat image.

Delete Favourite

Tool to delete a favourite from your account by its ID.

Delete Image

Delete an uploaded image from your account by its ID.

Delete Vote

Tool to delete a vote from your account by its ID.

Get Cat Breed by ID

Tool to get detailed information about a specific cat breed by its ID.

Get Favourite by ID

Tool to retrieve a specific favourite by its unique ID.

Get Cat Image by ID

Tool to retrieve a specific cat image by its unique ID.

Get Image Analysis

Get machine learning analysis results for an uploaded image.

Get Image Breeds

Tool to retrieve breed information associated with a specific cat image.

Get Cat Breeds

Retrieves a paginated list of cat breeds from The Cat API.

Get Vote by ID

Retrieves a specific vote by its unique ID from The Cat API.

List Image Categories

Retrieves a list of all active image categories from The Cat API.

List Favourites

Tool to get all favourites belonging to your account.

List Uploaded Images

Tool to get all images uploaded to your account via /images/upload.

List Votes

Tool to retrieve all votes you have created.

Search Cat Breeds

Search for cat breeds by name.

Search Cat Images

Search for random cat images with optional filters.

FRAMEWORKS

How to build Cats MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Cats MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Cats MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Cats MCP with Claude Code

Codex logo

Codex

Use Cats MCP with Codex

OpenClaw logo

OpenClaw

Use Cats MCP with OpenClaw

Hermes logo

Hermes

Use Cats MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Cats MCP with Atomic Agent

Google ADK logo

Google ADK

Use Cats MCP with Google ADK

LangChain logo

LangChain

Use Cats MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Cats MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Cats MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Cats MCP with LlamaIndex

CrewAI logo

CrewAI

Use Cats MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Cats MCP with Pydantic AI

AutoGen logo

AutoGen

Use Cats MCP with AutoGen

FAQ

Frequently asked questions

With a standalone Cats MCP server, the agents and LLMs can only access a fixed set of Cats tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Cats 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 Cats tools.

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

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