How to Connect ClickHouse MCP to Claude

Query your ClickHouse data directly from Claude using Sequel’s MCP server. Ask questions in plain English — no SQL, no dashboards, no context switching.

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Example prompts

Everything you can ask Claude about your ClickHouse data.

Ask in plain English — Sequel translates it into a ClickHouse query, runs it, and Claude hands back the answer. No SQL, no dashboards, no CSV exports.

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What you can ask Claude

How many events did we receive per hour yesterday?
What's the funnel conversion rate from signup to first purchase?
Show me the top 10 users by event count this week
Which event types have increased most in the last 7 days?
What's the day-1 retention rate for users who signed up last month?

How it works

Three steps to get started

Connect ClickHouse to Sequel

In your Sequel dashboard, go to Connections and add ClickHouse. Sequel handles authentication and schema discovery automatically.

Add the MCP config

Copy the Sequel MCP configuration into Claude's settings file (shown below). Swap in your API key from Settings → API Keys.

Ask Claude about your data

Restart Claude and start asking questions. "How many events did we receive per hour yesterday?" — and get a real answer backed by live ClickHouse data.

Configuration

Add Sequel to Claude

Place this in ~/Library/Application Support/Claude/claude_desktop_config.json and replace sql_your_api_key with a key from Settings → API Keys.

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "sequel": {
      "url": "https://api.sequel.sh/mcp",
      "headers": {
        "Authorization": "Bearer sql_your_api_key"
      }
    }
  }
}

Sequel CLI

Install ClickHouse MCP to Claude

The Sequel CLI installs ClickHouse into Claude in one step — it signs you in, provisions a scoped API key, and writes the right config to the right place. No keys to copy by hand.

Prefer npm? npm install -g @sequelsh/cli@latest works too.

1
Install the Sequel CLI
One line installs the latest CLI with whatever package manager you have.
```
curl -fsSL https://sequel.sh/install | sh
```
2
Sign in
Authenticate in your browser and pick an organization.
```
sequel login
```
3
Install into Claude
One command installs Sequel into Claude and writes its MCP config.
```
sequel install claude
```

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Connect ClickHouse MCP to any agent

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Other data sources

Connect other sources to Claude

PostgreSQL

Query your PostgreSQL database in plain English. No SQL required.

MySQL

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BigQuery

Query petabytes of BigQuery data in plain English.

Google Sheets

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Google Analytics 4

Ask your GA4 data anything. No SQL, no dashboards.

Google Search Console

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MCP Server

Connect any MCP-compatible server and query it with AI in seconds.

Stripe

Ask your Stripe data anything. MRR, churn, refunds — answered in plain English.

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HubSpot

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Ahrefs

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Apollo.io

Ask your Apollo.io prospects, contacts, and accounts anything — in plain English.

Frequently asked questions

How do I connect ClickHouse to Claude?

You need two things: (1) connect ClickHouse to Sequel in your Sequel dashboard under Connections, and (2) add the Sequel MCP config to Claude using the setup shown above. Once both are done, Claude can query your ClickHouse data directly.

What ClickHouse data can Claude access?

Claude can access any data available through your ClickHouse connection in Sequel. Use Sequel's search tool to discover available metrics and dimensions, then execute queries to pull the data you need.

Is my ClickHouse data sent to Claude's servers?

Query results are returned to Claude as context within your conversation. Only the data you explicitly ask about is retrieved. Sequel never stores your query results permanently — they exist only for the duration of the tool call.

Do I need a Sequel account?

Yes. You need a Sequel account to connect ClickHouse and generate an API key. Sign up free at sequel.sh — no credit card required. Then create a connection to ClickHouse and generate an API key from Settings → API Keys.

Can I connect multiple ClickHouse accounts?

Yes. Sequel supports multiple connections of the same type. If you have multiple ClickHouse accounts or properties, add each as a separate connection in Sequel. Claude will be able to query all of them.

Connect ClickHouse to Claude today

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