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Fitness Tools MCP Server

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answering

Fitness Tools is answering right now. Last checked 4 min ago. 67 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 30 · avg 6 · -8% w/w
a month agotoday
Uptime history 91 days of history · worst day 90%
91 days agonow
100.0%
Uptime 24h
92 of 92 checks
10
Tools
read from the server
167 ms
Response time
average over 24h
67
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.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

run in your terminal
claude mcp add fitness-tools --transport http https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp
Settings → Connectors → Add custom connector, then paste this address
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
{
  "servers": {
    "fitness-tools": {
      "type": "http",
      "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

URLTransportStateLatencyChecked
https://fitness-tools-mcp.ajwallacemusic.workers.dev/mcp streamable-http answering 151 ms 4 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 92 of 92 checks got a reply (100.0%), average response time 167 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 in the form 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 167 ms on average, which is faster than 79% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. 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 67 times in the last week. Week over week that is -8%. 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?
The code is open source: it is published under the MIT licence, written in TypeScript and 1 stars on GitHub. The licence covers the code in the repository, not the hosted service at fitness-tools-mcp.ajwallacemusic.workers.dev, which runs on its operator's own terms.