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Health

Vital Capacity Estimator (Height / Age / Sex)

Estimate expected adult vital capacity with the Baldwin equations ((27.63 − 0.112×age)×height for males, (21.78 − 0.101×age)×height for females) and optionally grade a measured VC as % predicted. Not medical advice.

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Quick start

Call this tool from your code in three languages.

cURL
curl -X POST 'https://api.elysiatools.com/en/api/tools/vital-capacity-estimator' \
  -H 'Content-Type: application/json' \
  -d '{"sex":"male","heightCm":180,"ageYears":25,"measuredVc":0,"measuredUnit":"L","decimalPlaces":1}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP
POST https://api.elysiatools.com/en/api/tools/vital-capacity-estimator

Parameters

NameTypeRequiredDescription
sexselectYesSex for the Baldwin prediction equation.
heightCmnumberYesHeight in centimeters (100–250).
ageYearsnumberYesAge in years (15–100).
measuredVcnumberNoOptional measured vital capacity in the selected unit (0.5–9 L or 500–9000 mL); enables % predicted and severity grading.
measuredUnitselectNo

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json
{
  "mcpServers": {
    "elysiatools-vital-capacity-estimator": {
      "name": "vital-capacity-estimator",
      "description": "Estimate expected adult vital capacity with the Baldwin equations ((27.63 − 0.112×age)×height for males, (21.78 − 0.101×age)×height for females) and optionally grade a measured VC as % predicted. Not medical advice.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=vital-capacity-estimator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call
{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "vital-capacity-estimator",
    "arguments": {
  "sex": "male",
  "heightCm": 180,
  "ageYears": 25,
  "measuredVc": 0,
  "measuredUnit": "L",
  "decimalPlaces": 1
}
  }
}
Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

Questions or issues? Contact [email protected]

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Unit of the measured vital capacity.
decimalPlacesnumberNo—

Response format

JSON result

JSON
{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}