Pure MCP Server

Pure random number generator written in TypeScript

Local serverstdio

What is the Pure MCP server?

Pure random number generator written in TypeScript. Exposed over MCP by the pure mcp server, that capability becomes something an assistant can invoke while it works, not something you go and do afterwards.

What it actually does

Fast Pseudorandom number generators (aka PRNG) with purity in mind!

Its toolset

Everything the assistant can do here goes through one of these:

  • Distributions — Once you are able to generate random values, next step is to scale them into the range you want. Indeed, you probably don't want a floating point

Adding it to your client

Installation goes through your MCP client rather than a global install: point it at pure-rand on npm and it is fetched when the client starts. The copy-paste blocks for Claude Desktop, Claude Code and Cursor are further down this page.

When to reach for it

Among the developer tooling options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Pure's toolset — Distributions — is a fair guide to whether it matches your workflow. It is maintained by GitHub Actions; worth a glance at recent repository activity before you build anything load-bearing on it.

This entry was verified against Pure's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.

Caveats

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the pure mcp server does with a few real requests.

Available tools

ToolWhat it does
DistributionsOnce you are able to generate random values, next step is to scale them into the range you want. Indeed, you probably don't want a floating point value between 0 (included) and 1 (excluded) but rather an integer value be

How to install the Pure MCP server

{
  "mcpServers": {
    "rand": {
      "command": "npx",
      "args": ["-y", "pure-rand"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Example prompts to try

  • Use Pure to Distributions.

Frequently asked questions

It connects Pure to MCP-compatible AI assistants such as Claude and Cursor, exposing 1 tool (Distributions) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Pure directly.