LSD MCP server

Immediately gather an aggregation of high quality info directly from a website just by giving LSD the link via Claude MCP.

You will see Claude connect to the internet and:

• Write LSD SQL
• Self-correct LSD SQL
• Run LSD SQL that's connected to cloud browsers

Demo

Here's a demo of what that looks like in action:

We treated Claude to psychedelic therapy on LSD and now it can just do things. Here's a longer video on YouTube

Contents

• Quickstart
  • Dependencies
  • Giving Claude LSD
  • Claude on LSD
  • Failed to start MCP server
    • First time running an MCP server
    • Missing executable
    • Incomplete path
• What is MCP?
• What is LSD?
  • Contact
• Smithery
  • Installing via Smithery

Quickstart

Dependencies

To run the MCP server, you'll need both Python and uv installed. To use the MCP server, you'll need to download either the Claude desktop app or another MCP client.

To use LSD, you'll need to sign up and create an API key so your queries are privately associated to only your account. You can do so for free with a Google account.

Giving Claude LSD

1. Clone this repository onto your computer

$ git clone https://github.com/lsd-so/lsd-mcp.git
$ cd lsd-mcp

2. Update the values in the .env file with LSD_USER containing the email you have an account on LSD with and LSD_API_KEY containing the API key you obtained from the profile page.

LSD_USER=<your_email_here>
LSD_API_KEY=<api_key_from_your_profile_page>

3. Give LSD to Claude

$ uv run mcp install app.py

Note: Every time you run mcp install, if you needed to update claude_desktop_config.json the first time, you will need to remember to update the path to uv each time you install the MCP server.

4. Restart the Claude desktop app and, now, Claude should be able to do trippy things on LSD.

Claude on LSD

If it's the first time in a chat session where you'd like to have Claude use LSD, because we're not popular enough to get caught in Anthropic's crawls, you'll need to first leverage our custom prompt which feeds in our documentation as part of the assistance.

See the write_lsd_sql function if you're interested in how it works but it just boils down to a convenient rule we added to our SCAN keyword enabling a developer or LLM to retrieve the documentation for our language in markdown (if you'd like to run it yourself).

SCAN https://lsd.so/docs/database/language

Failed to start MCP server

If you encounter error messages when starting Claude desktop along the lines of the following message:

Failed to start MCP server: Could not start MCP server LSD: Error: spawn uv ENOENT

First time running an MCP server

If this is your first time using an MCP server on your computer than, to remedy the error shown above, follow the instructions under the Add the Filesystem MCP Server step to create a claude_desktop_config.json file that Claude desktop can know to refer to.

Missing executable

... View full README on GitHub