Fitness Tools MCP Server

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answering

Fitness Tools is answering right now. Last checked 15 min ago. 61 installs a week from npm. It exposes 10 tools. Last commit 24 Jul 2026.

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

Installs per day peak 28 · avg 8 · +65% w/w

a month agotoday

Uptime history 48 days of history

48 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

183 ms

Response time

average over 24h

Installs / week

npm and PyPI

Nothing serious here today

Today is the operative word: we check Fitness Tools every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 15 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add fitness-tools --transport http https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp

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

{
  "mcpServers": {
    "fitness-tools": {
      "url": "https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.fitness-tools]
url = "https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "fitness-tools": {
      "url": "https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "fitness-tools": {
      "url": "https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp"
    }
  }
}

Available tools 10

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

activity

activity-multiplier

Estimate the TDEE activity multiplier via the classic lookup table or a NEAT+EAT model (occupation/steps for non-exercise, training volume for exercise).

adaptive

adaptive-tdee

Measure actual TDEE from a logged history of daily weight and/or calorie intake. Default method (kalman) is a joint Kalman filter over true weight and TDEE — handles missing days, gates outliers, and reports uncertainty (CI95) alongside denoised true weight; regression/endpoints are simple window-based estimates kept for comparison. Use instead of formula TDEE once real logged data exists. Each entry needs at least one of weight/kcal (not necessarily both). Entry dates must span 10 years or less (earliest to latest). Note: all methods need at least one weigh-in (kalman) or two (regression/endpoints) — a history with zero weight entries throws under the kalman default; pass methods:'all' to get a graceful empty/skipped result instead.

body

body-fat

Estimate body-fat % via US Navy circumference, Jackson-Pollock 3-site skinfold, and Deurenberg (BMI-based) methods.

ffmi

ffmi

Compute the Fat-Free Mass Index (FFMI) and its height-adjusted form from weight and body fat (or lean mass), and flag whether it exceeds the ~25 natural ceiling.

macros

macros

Compute protein/fat/carb grams for a calorie target using the g-per-kg-bodyweight method, with goal-based protein defaults.

muscle

muscle-potential

Estimate drug-free maximum bodyweight at a target body-fat % via Casey Butt (wrist+ankle), the FFMI~25 natural cap, and Berkhan's max-contest-weight model. Men only in v1.

one

one-rep-max

Estimate 1RM from a submaximal set via Epley, Brzycki, Lombardi, Wathan, O'Conner, and Mayhew; returns a %1RM load chart.

powerlifting

powerlifting-attempts

Deterministic opener/second/third attempts from an estimated 1RM, plus a warmup ramp and per-side plate loading. Tunable by aggressiveness and available plates.

rsmi

rsmi

Estimate the appendicular skeletal muscle index (RSMI) from a DXA value (direct) and/or an anthropometric estimate (Wen 2011), and flag low muscle mass against EWGSOP2, AWGS, and Baumgartner sarcopenia cutoffs.

tdee

tdee

Estimate BMR and TDEE via Mifflin-St Jeor, Harris-Benedict, Katch-McArdle, and Cunningham. Provide body_fat or lean_mass to unlock the LBM-based methods.

Endpoints

URL	Transport	State	Latency	Checked
https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp	streamable-http	answering	139 ms	15 min ago

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Fitness Tools — questions

Answers built from our own checks of this server.

What can Fitness Tools do?

It exposes 10 tools, read directly from the server on our last check. Among them: activity-multiplier, adaptive-tdee, body-fat, ffmi, macros, muscle-potential and 4 more. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Fitness Tools working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 183 ms. The bar chart above shows every period we have measured.

How do I connect Fitness Tools?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Fitness Tools need an API key?

No. Fitness Tools completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 10 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Fitness Tools?

It answers our handshake in 183 ms on average, which is faster than 70% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

How many people use Fitness Tools?

The npm package @almostjacked/fitness-tools-mcp was installed 61 times in the last week. Week over week that is +65%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is Fitness Tools open source?

Yes — it is published under the MIT licence, written in TypeScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.