How do I install Nav Substrate?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Nav Substrate need an API key?

The publisher lists these environment variables: NAV_SERVICE_API_KEY, NAV_SERVICE_URL, NAV_SERVICE_LOCAL.

What transport does Nav Substrate use?

Nav Substrate runs locally over stdio.

Nav Substrate

by io.github.Wchampe

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

Power your agent

Add this server

The publisher's own command. Not a PlugMCP endpoint.

Local command

uvx nav-substrate-mcp==0.1.1

Credentials from the publisher

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).

Provider

Claude Code

NAV_SERVICE_API_KEY=<value> NAV_SERVICE_URL=<value> NAV_SERVICE_LOCAL=<value> claude mcp add io.github.wchampe-nav-substrate -- uvx nav-substrate-mcp==0.1.1

Run in a terminal.

Claude Desktop

{
  "mcpServers": {
    "io.github.wchampe-nav-substrate": {
      "command": "uvx",
      "args": [
        "nav-substrate-mcp==0.1.1"
      ],
      "env": {
        "NAV_SERVICE_API_KEY": "<value>",
        "NAV_SERVICE_URL": "<value>",
        "NAV_SERVICE_LOCAL": "<value>"
      }
    }
  }
}

claude_desktop_config.json

Step-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Related MCP

Related skills

View all

Questions

How do I install Nav Substrate?: Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.
Does Nav Substrate need an API key?: The publisher lists these environment variables: NAV_SERVICE_API_KEY, NAV_SERVICE_URL, NAV_SERVICE_LOCAL.
What transport does Nav Substrate use?: Nav Substrate runs locally over stdio.
When was Nav Substrate last checked?: Last checked 2026-10-16. Relativistic navigation calcs for agents: time dilation, trip planning, chronometry, gamma.

README is not crawled yet. Open the repository