drand-mcp-server 🎲

Use verifiable randomness in your AI application. This Model Context Protocol (MCP)
server enables you to get a random value from the drand network, verify its validity and use it as
an input seed to your model-driven flows!

Use Cases

repeatable, random sampling of input data
interaction with other MCP servers in a verifiable manner (e.g. paying out rewards based on a prompt)
verifying the output of another random process using historical drand beacons

Prerequisites

a relatively recent version of node (v21+ - fetch is required)

Installation

You can run the MCP server either using npx or after building locally.

Usage with VS Code

Create a file called .vscode/mcp.json in your workspace (or in your home directory) and add the following code:

*Configuration content*

For additional info, see the VS Code docs on MCP

Usage with Claude

You can run the drand-mcp-server alongside claude desktop by adding the following to your config:

*Configuration content*

Tools

The following tools are available from the MCP server

Name	Params	Description
get-randomness-latest	none	fetches the latest available beacon from drand quicknet
get-randomness-by-time	time in milliseconds	fetches the randomness beacon emitted at or just before the time
provided
get-randomness-by-round	round	fetches the randomness beacon emitted with a given round number

Building from source

install dependencies with npm install
build the application with npm run build
run the application with either npm start or node ./dist/index.mjs

You can also configure VS Code and Claude as above, replacing the command/args with the following:

  "command": "node",
  "args": ["/path/to/my/project/drand-mcp-server/dist/index.mjs"]

Roadmap

fetch latest randomness
fetch randomness by round
fetch randomness by time
select items from a list

Drand MCP Server