Nav Substrate MCP Server

by wchampe Your server? Claim it

local only

Nav Substrate runs on your own machine — the client starts it, so there is no endpoint to ping. 134 installs a week from pypi.

Relativistic navigation calcs for agents: time dilation, trip planning, chronometry, gamma.

The linked repository no longer exists on GitHub — it was deleted or made private.

Installs per day peak 40 · avg 17 · +9% w/w

a month agotoday

134

Installs / week

pypi · nav-substrate-mcp

—

Stars

on GitHub

—

Last commit

from GitHub

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License

language unknown

This one has been quiet for a while

Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add nav-substrate -- uvx nav-substrate-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

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

~/.codex/config.toml

[mcp_servers.nav-substrate]
command = "uvx"
args = ["nav-substrate-mcp"]

.cursor/mcp.json

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

.vscode/mcp.json

{
  "servers": {
    "nav-substrate": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "nav-substrate-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: NAV_SERVICE_API_KEY (Your Nav Substrate API key (or 'demo')), NAV_SERVICE_URL (Base URL of the hosted API), NAV_SERVICE_LOCAL (Set to 1 to run the calc core in-process (offline, no metering)).

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Nav Substrate — questions

Answers built from our own checks of this server.

Why is there no uptime for Nav Substrate?

Nav Substrate runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the pypi package nav-substrate-mcp was installed 134 times last week.

Is Nav Substrate still maintained?

The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.

How do I connect Nav Substrate?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls nav-substrate-mcp straight from pypi; nothing to host, nothing to sign up for.

How many people use Nav Substrate?

The pypi package nav-substrate-mcp was installed 134 times in the last week. Week over week that is +9%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.