How to connect ClickHouse to Claude Cowork

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Claude Cowork logo
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Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your ClickHouse account to Cowork via Composio Connect, enabling it to show total user signups for last week, summarize top 5 products by revenue, insert a new sales record into database, and more such actions on your behalf without compromising your account security.

Also integrate ClickHouse with

Connecting ClickHouse to Claude Cowork

1. Open Customize

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

2. Add the Composio MCP server

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

3. 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 Cowork

4. Connect your ClickHouse account

Back in Cowork, ask the agent to connect to ClickHouse or give it any ClickHouse-related task.

For example, ask Cowork to:

  • "Show total user signups for last week"
  • "Summarize top 5 products by revenue"
  • "Insert a new sales record into database"

It will prompt you to authenticate and authorize access.

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

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like ClickHouse through MCP without you sharing account credentials directly with the agent.

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

The ClickHouse MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your ClickHouse account. It provides structured and secure access so your agent can perform ClickHouse operations on your behalf.

Supported Tools & Triggers

Tools
Execute ClickHouse QueryExecute a sql query in clickhouse and return the results.
Get Database SchemaGet comprehensive schema overview of an entire database including all tables and optionally their column definitions.
Get Table SchemaGet detailed schema information for a specific table including column definitions, types, keys, and optionally sample data.
List ClickHouse DatabasesList all databases in the clickhouse instance.
List ClickHouse TablesList tables in clickhouse databases.

Available tools and triggers

After setup, the supported ClickHouse tools and triggers listed on this page are available to Cowork through Composio Connect.

You can now ask Cowork to handle ClickHouse workflows in natural language, from quick summaries and drafting tasks to more complex multi-step work across connected apps.

How to build ClickHouse MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and ClickHouse MCP?

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

Can I manage the permissions and scopes for ClickHouse while using Tool Router?

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

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