Liquidium MCP Server

A Model Context Protocol (MCP) server for interacting with PostHog analytics through Liquidium. Create annotations and manage projects directly through Claude Desktop or Smithery!

Features

• List Projects: View all available PostHog projects in your organization
• Create Annotations: Add annotations to your PostHog projects with optional timestamps
• List and Search Insights: View and search for insights in your PostHog projects
• Get Insight Details: View detailed information about specific insights

Setup

Option 1: Smithery (Recommended)

The easiest way to use Liquidium MCP is through Smithery:

1. Visit Liquidium MCP on Smithery
2. Click "Add to Claude"
3. Enter your PostHog API Key when prompted
4. Start using Liquidium tools in Claude!

Option 2: Local Installation

1. Prerequisites

2. Python 3.10 or higher

3. pip or uv package manager

4. PostHog API Key with annotation:write and project:read scopes obtained from your project settings

5. Installation

```bash # clone the repo git clone https://github.com/Shudufhadzo/liquidium-mcp.git

cd liquidium-mcp

# Create and activate virtual environment python -m venv .venv

# On Windows .venv\Scripts\activate

# On macOS/Linux source .venv/bin/activate

# Install dependencies pip install -e . ```

1. Configuration

2. Create a .env file in the project root: PERSONAL_API_KEY=phx_your_posthog_api_key_here

3. Claude Desktop Setup

4. Install Claude Desktop
5. Open Claude Desktop settings and click "Edit Config". Alternatively, you can open the file from:
   • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
   • Windows: %APPDATA%\Claude\claude_desktop_config.json
6. Add this to your claude_desktop_config.json (adjust paths according to your system): json { "mcpServers": { "posthog": { "command": "/path/to/python", # Get this by running: which python "args": [ "-m", "posthog_mcp", "--directory", "/path/to/your/posthog-mcp" # Full path to this project ] } } } Check the latest documentation on setting up Claude Desktop as MCP client if you ran into any issues.

Usage

After setup, you'll see a hammer icon in Claude Desktop. The following commands are available:

List Projects

Ask Claude:

"List my PostHog projects"

Get and Search for Insights

Ask Claude:

"List my PostHog insights" or "Search for revenue insights in my PostHog"

Search for documentations online

You can ask:

• "how can i do reverse proxy in nextjs in posthog?"

Create Annotation

Using the Project ID you get from the list of projects, ask Claude:

"Create a PostHog annotation in project 53497 saying 'Deployed v1.2.3'"

or with a specific date:

"Create a PostHog annotation in project 53497 for March 20th saying 'Started new marketing campaign'"

Troubleshooting

• If the hammer icon doesn't appear, restart Claude Desktop
• Check logs at ~/Library/Logs/Claude/mcp*.log (macOS) or %APPDATA%\Claude\logs (Windows)
• Verify your PostHog API key has the correct permissions
• Make sure all paths in claude_desktop_config.json are absolute paths

Contributing

Feel free to open issues and PRs! We follow PostHog's contribution guidelines.