Is Fitness Tools free?

Yes, Fitness Tools is free to use.

How do I install Fitness Tools?

Fitness Tools supports both local and remote installation. For local use, install it via npm (npx) and add the configuration to your AI app. For remote access, add the server URL to your MCP configuration.

Is Fitness Tools safe to use?

Yes. Fitness Tools passed MCP Marketplace's automated security scan with a score of 9.7/10 (low risk). Every server on MCP Marketplace is security-scanned before it's listed; see the full security report on this page for the findings and permissions.

What AI apps work with Fitness Tools?

Fitness Tools uses the Model Context Protocol (MCP) and works with any MCP-compatible AI app, including Claude, ChatGPT / Codex, Gemini, Copilot, Cursor, and more.

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Fitness Tools MCP Server

by Almostjacked

Developer ToolsLow Risk9.7MCP RegistryLocalRemote

Free

Server data from the Official MCP Registry

Deterministic fitness calculators — TDEE, adaptive TDEE, body fat, 1RM, macros — with consensus.

About

Deterministic fitness calculators — TDEE, adaptive TDEE, body fat, 1RM, macros — with consensus.

Remote endpoints: streamable-http: https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp

Security Report

9.7

Low Risk9.7Low Risk

Valid MCP server (4 strong, 2 medium validity signals). No known CVEs in dependencies. ⚠️ Package registry links to a different repository than scanned source. Imported from the Official MCP Registry. 1 finding(s) downgraded by scanner intelligence.

10 tools verified · Open access · 1 issue found

Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.

Permissions Required

This plugin requests these system permissions. Most are normal for its category.

HTTP Network Access

Connects to external APIs or services over the internet.

file_system

Check that this permission is expected for this type of plugin.

How to Install & Connect

Available as Local & Remote

This plugin can run on your machine or connect to a hosted endpoint. during install.

Documentation

View on GitHub

From the project's GitHub README.

Fitness Tools

📖 Documentation · npm

Use it with your AI right now: add the hosted MCP connector https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp in claude.ai / ChatGPT settings, install one-click in Cursor or VS Code, or grab the Claude Desktop .mcpb.

Composable, deterministic fitness calculators — BMR/TDEE, body fat, 1RM, macros, activity multiplier, powerlifting attempts, and natural muscular potential. Each calculator runs several published formulas and reports a consensus across them.

This repo ships three separate, independently-usable artifacts:

@almostjacked/fitness-tools — the npm library. Validated, self-describing calculators that run natively in the browser and on the server. This is the product.
@almostjacked/fitness-tools-api — a reference HTTP server built on the library. It re-exposes the same calculators over HTTP (identical math, identical results) and is inert until you run or host it.
@almostjacked/fitness-tools-mcp — an MCP stdio server built on the library. It exposes the same calculators as MCP tools for agents/LLM clients (identical math), runnable with npx @almostjacked/fitness-tools-mcp.

Which one do you want?

You're…	Use	Why
Writing JS/TS (browser, Node, edge)	`@almostjacked/fitness-tools` (npm)	Runs in-process. Install, import, call. No server, no network.
Calling from another language / `curl` / a no-code tool	`@almostjacked/fitness-tools-api` (HTTP)	Same calculators over HTTP. You run/host it.
Building a remote frontend	`@almostjacked/fitness-tools-api`	Self-describing catalog + OpenAPI over the wire.
Wiring the calculators into an MCP client / agent	`@almostjacked/fitness-tools-mcp`	`npx` an MCP stdio server; one tool per calculator.

The API adds a network boundary, not capability. The package works the moment you install it; the server does nothing until it's running.

Documentation

New to it? Getting started
What each calculator does: Tools
Calling from an agent: Consumer guide
Working on this repo: AGENTS.md

Layout

packages/core   @almostjacked/fitness-tools — the library (the product)
apps/api        @almostjacked/fitness-tools-api  — a reference HTTP server over the library
apps/mcp        @almostjacked/fitness-tools-mcp  — an MCP stdio server over the library

Develop

corepack enable              # pnpm version is pinned in package.json
pnpm install
pnpm -r test                 # core + api + mcp test suites
pnpm -C packages/core build  # build the library
pnpm -C apps/api dev         # run the reference server on :8080

See each package's README — library · reference server.

License

MIT — free, open-source, and usable in commercial products. See LICENSE. Built on published formulas (Mifflin-St Jeor, US Navy, Jackson-Pollock, Epley, Casey Butt, etc.); contributions welcome.

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Fitness Tools MCP Server

About

Security Report

Findings (1)

Permissions Required

How to Install & Connect

Documentation

Fitness Tools

Which one do you want?

Documentation

Layout

Develop

License

Reviews

No reviews yet

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