Gnomon MCP Server

Deterministic batch tools so LLM agents stop guessing dates and math.

Remote serverstreamable-httpPython

What is the Gnomon MCP server?

Deterministic batch tools so LLM agents stop guessing dates and math. That is what the gnomon mcp server brings to an AI assistant: the same capability, reachable through the Model Context Protocol rather than a separate app or dashboard.

The short version

A small MCP server for the boring-but-essential utilities every model needs: dates, calendars, arithmetic, unit conversion. Use it so your assistant stops "next-token guessing" math and date math.

Getting it running

Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.

The tools it exposes

The server publishes 4 tools. What each one is for:

  • Calendar — Units for diff/until/since: seconds, minutes, hours, days, weeks
  • Calculator — The Calculator tool exposed by this server
  • Cursor — The Cursor tool exposed by this server
  • Continue — The Continue tool exposed by this server

Things to watch

  • Your data travels to the provider's service, so the usual questions apply about what you send and what they retain.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

How it compares

This sits in the AI and media services group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. Gnomon's toolset — Calendar, Calculator, Cursor and 1 more — is a fair guide to whether it matches your workflow. It is maintained by lihtness; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Available tools

ToolWhat it does
CalendarUnits for diff/until/since: seconds, minutes, hours, days, weeks.
CalculatorThe Calculator tool exposed by this server.
CursorThe Cursor tool exposed by this server.
ContinueThe Continue tool exposed by this server.

How to install the Gnomon MCP server

{
  "mcpServers": {
    "gnomon": {
      "command": "uvx",
      "args": ["gnomon-mcp"]
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Example prompts to try

  • Use Gnomon to Calendar.
  • Use Gnomon to Calculator.
  • Use Gnomon to Cursor.

Frequently asked questions

It connects Gnomon to MCP-compatible AI assistants such as Claude and Cursor, exposing 4 tools (Calendar, Calculator, Cursor, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Gnomon directly.