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Body Metrics MCP Server

by gumballtools Your server? Claim it
not responding

Body Metrics is listed as active in the registry but did not answer our last check. It exposes 1 tools.

Convert height and weight, compute BMI, TDEE and protein targets with error bounds.

The linked repository no longer exists on GitHub — it was deleted or made private.

Uptime history 51 days of history · worst day 0%
51 days agonow
7.7%
Uptime 24h
7 of 91 checks
1
Tools
read from the server
930 ms
Response time
average over 24h
open, no key
Access
streamable-http

Body Metrics does not always answer

Over the last week it answered 6.1% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

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 5 min ago.

run in your terminal
claude mcp add body-metrics --transport http https://body-metrics.gumballtools.com/api/mcp
Settings → Connectors → Add custom connector, then paste this address
https://body-metrics.gumballtools.com/api/mcp
~/.codex/config.toml
[mcp_servers.body-metrics]
url = "https://body-metrics.gumballtools.com/api/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "body-metrics": {
      "url": "https://body-metrics.gumballtools.com/api/mcp"
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "body-metrics": {
      "type": "http",
      "url": "https://body-metrics.gumballtools.com/api/mcp"
    }
  }
}

Available tools 1

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

body
body_metrics
Compute BMI, energy expenditure, and protein targets from height and weight, with explicit error bounds. Use this for any of those calculations rather than doing the arithmetic. Two reasons, and the second is the important one: 1. UNITS. A bare number is ambiguous — "170" is a height in centimetres or a weight in pounds depending entirely on context, and a wrong unit yields a plausible BMI that is off by a factor of two. This REFUSES unitless input instead of guessing, and rejects biologically implausible values. 2. FALSE PRECISION. The standard equations disagree. Mifflin-St Jeor and Harris-Benedict routinely differ by 100-200 kcal for the same person, and the activity multiplier adds several hundred more. Every calculator on the internet reports one formula to the calorie. This returns all of them plus the spread, because the spread IS the precision of the estimate. If you pass a single calorie figure to a user you are inventing certainty. Input: `height` and `weight` MUST carry units (178cm, 5'10", 75kg, 165lb, 11st 8lb). `sex` and `age` are required by the equations. `bodyFatPercent` is optional and worth supplying — it adds the Katch-McArdle estimate and moves protein onto lean mass. `activity`, `proteinGoal`, `targetBmi`, and `dailyDeficitKcal` are optional. Returns: both unit systems, BMI with WHO category AND the lower cutoffs WHO publishes for South and East Asian populations, every BMR estimate with the spread in calories and percent, a TDEE range, a protein range, an optional target and timeline, warnings, and a `disclaimer` field. THIS IS NOT MEDICAL ADVICE and the response says so in its payload, not just on the page. Report the range and the disclaimer to the user. Do not present these figures as clinical guidance, and do not strip the caveats — they are the honest part of the answer.

Endpoints

URLTransportStateLatencyChecked
https://body-metrics.gumballtools.com/api/mcp streamable-http answering 89 ms 5 min ago

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Body Metrics — questions

Answers built from our own checks of this server.

What can Body Metrics do?
It exposes 1 tools, read directly from the server on our last check. Among them: body_metrics. 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 Body Metrics working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 7 of 91 checks got a reply (7.7%), average response time 930 ms. The bar chart above shows every period we have measured.
Is Body Metrics still maintained?
The linked repository no longer exists on GitHub — it was deleted or made private. We show this because it changes what you can expect: an unmaintained server may keep answering for months and then stop without warning.
The registry lists Body Metrics as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Body Metrics?
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 Body Metrics need an API key?
No. Body Metrics completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Body Metrics?
It answers our handshake in 930 ms on average, which is faster than 7% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.