Nav Substrate

io.github.WchampePublished by GitHub account Wchampev0.1.1Updated Oct 24, 2026

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

VerifiedSTDIODesktop onlyLocation & Lifestyle

Server details

Identifier: io.github.Wchampe/nav-substrate
Transport: STDIO
Runtime: Desktop only
Trust: Verified
Published: Sep 16, 2026

Security note

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Overview

AI-generated overview

Local MCP server that gives an assistant relativistic navigation calculations: time dilation, trip planning, chronometry and gamma factors.

What you can do: Compute relativistic navigation figures such as time dilation and the Lorentz gamma factor.
Plan trips with relativistic travel calculations.
Handle chronometry calculations for agents.
Run the calculation core either in-process offline or against a hosted API.
When to use it: Useful when an assistant needs to reason about relativistic effects, such as time dilation or gamma factors, for navigation or trip-planning scenarios, and you want those calculations available as tools rather than done by hand.
Requirements: Runs as a local Python process installed from the nav-substrate-mcp PyPI package over stdio. Needs an API key in NAV_SERVICE_API_KEY (the value 'demo' is accepted) and the hosted API base URL in NAV_SERVICE_URL, unless NAV_SERVICE_LOCAL is set to 1 to run the calculation core in-process offline without metering.

Before you install

The server asks for an API key in NAV_SERVICE_API_KEY; keep it out of shared configuration. By default calculations go to a hosted API, so inputs are sent to a third party unless NAV_SERVICE_LOCAL is enabled. The manifest lists no tools, so the exact operations are not documented here.

Installation

In SourceWeft

Open Nav Substrate in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Desktop only via STDIO. STDIO servers start a local process, so they need the SourceWeft desktop host.

Other MCP clients

Follow the launch instructions in the repository.

README

This repository has no README.

Tools

SourceWeft has not started this package in its sandbox yet, so its tools are not known.

Version history

v0.1.1LatestSep 16, 2026

Score

25% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 days25 pts
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Auth declared10 pts
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Tools listed15 pts
Answer tools/list without a credential, or ship a package that starts in a sandbox without one.
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
Declare a GitHub repository with a README, or serve resource_documentation in the OAuth protected-resource metadata.
License10 pts
Declare a license in the repository or the registry entry.