Physics Calculators

com.usephysicsPublished by usephysics.comOfficial publisherv0.1.0Updated Nov 3, 2026

Physics calculators that show their work, plus the CODATA 2022 constants. Educational use.

VerifiedStreamable HTTPWeb executable

Overview

Physics Calculators's hosted MCP server (usephysics.com), published by usephysics.com; no sign-in required; Streamable HTTP; 4 tools.

No AI overview yet: these facts come from the registry entry and the server itself.

Publisher
usephysics.com
Endpoint
usephysics.com
Last checked

Installation

In SourceWeft

  1. Open Physics Calculators in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/com.usephysics%2Fphysics-calculators/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "physics-calculators": {
      "type": "http",
      "url": "https://usephysics.com/api/mcp"
    }
  }
}

README

This repository has no README.

Tools

4

list_calculators

List the calculators

Every UsePhysics calculator: id (slug), name, category, formula, inputs (key, unit, default) and page URL. Optional category filter.

Parameterscategory

calculate

Run a calculator

Run one calculator by id with numeric inputs (keys from list_calculators, in the listed units). Returns every result with its unit, the formula, the Given → Formula → Substitute → Result working when the engine can derive it, and the URL of the solved page.

Parametersinputsrequiredcalculator_idrequired

get_constant

Look up a physical constant

One CODATA 2022 constant by id, symbol or name (e.g. 'c', 'speed of light', 'planck-constant'): value as NIST prints it, machine-readable value, standard uncertainty (null = exact), unit, note, page and NIST source.

Parametersqueryrequired

list_constants

List the physical constants

The CODATA 2022 constants UsePhysics keeps, grouped; optional group id filter. Values are NIST's.

Parametersgroup

Version history

1
  1. v0.1.0LatestNov 3, 2026

Score

75% 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 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • 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.