How to Connect ClickHouse MCP to Hermes

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

Connect to your agent Request a demo

Example prompts

Everything you can ask Hermes about your ClickHouse data.

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

Connect to your agent

What you can ask Hermes

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 Hermes's settings file (shown below). Swap in your API key from Settings → API Keys.

Ask Hermes about your data

Restart Hermes 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 Hermes

Place this in ~/.hermes/config.yaml and replace sql_your_api_key with a key from Settings → API Keys.

~/.hermes/config.yaml

mcp_servers:
  sequel:
    url: "https://api.sequel.sh/mcp"
    headers:
      Authorization: "Bearer sql_your_api_key"

Sequel CLI

Install ClickHouse MCP to Hermes

The Sequel CLI installs ClickHouse into Hermes 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 Hermes
One command installs Sequel into Hermes and writes its MCP config.
```
sequel install hermes
```

Other AI agents

Connect ClickHouse MCP to any agent

Claude

Use Claude to query your databases, explore schemas, and build analyses — all from one conversation.

Cursor

Query your databases and explore schemas without leaving your code editor.

ChatGPT

Connect ChatGPT to your databases and get data-backed answers in every conversation.

VS Code

Get database access inside VS Code Copilot without leaving your editor.

Windsurf

Give Windsurf's Cascade AI access to your databases — query data without leaving your editor.

Zed

Connect Zed's AI assistant to your databases for real-time data access while you code.

Gemini

Connect Google Gemini to your databases for grounded, data-backed answers.

Claude Code

Query your databases directly from the Claude Code CLI — without leaving your terminal.

Codex

Give OpenAI Codex CLI real-time database access for data-grounded coding sessions.

OpenClaw

Turn your self-hosted OpenClaw agent into a data analyst that queries every source you've connected.

Hermes

Give Nous Research's Hermes agent read access to every database and marketing tool you've connected.

Other data sources

Connect other sources to Hermes

PostgreSQL

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

MySQL

Instant insights from your MySQL database. Ask in plain English.

BigQuery

Query petabytes of BigQuery data in plain English.

Google Sheets

Query, write, and manage Google Sheets with AI.

Google Analytics 4

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

Google Search Console

Unlock your SEO data with natural language. No exports, no pivot tables.

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.

PostHog

Ask your PostHog product data anything — with HogQL under the hood.

Mixpanel

Conversational analytics on your Mixpanel events, funnels, and retention.

Amplitude

Query your Amplitude taxonomy, funnels, and dashboards in plain English.

HubSpot

Your AI analyst for HubSpot — contacts, deals, tickets, and pipelines.

Ahrefs

Ask your Ahrefs SEO data anything — backlinks, keywords, and traffic.

Apollo.io

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

Frequently asked questions

How do I connect ClickHouse to Hermes?

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

What ClickHouse data can Hermes access?

Hermes 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 Hermes's servers?

Query results are returned to Hermes 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. Hermes will be able to query all of them.

Connect ClickHouse to Hermes today

Get started free View all integrations