Math & Numbers

Thermodynamics (Gibbs Free Energy) Calculator

Calculate Gibbs free energy ΔG = ΔH − TΔS, reaction spontaneity, equilibrium temperature, and equilibrium constant K.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/thermodynamics-gibbs-calculator' \
  -H 'Content-Type: application/json' \
  -d '{"mode":"gibbs","dH":-726.4,"dS":-181,"temperature":298.15,"tempUnit":"kelvin","decimalPlaces":3}'

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/thermodynamics-gibbs-calculator

Parameters

Name	Type	Required	Description
mode	select	No	—
dH	number	No	Negative = exothermic, positive = endothermic.
dS	number	No	Negative = more ordered, positive = more disordered. Units are J (not kJ).
temperature	number	No	Absolute temperature. Used in 'Find ΔG' mode.
tempUnit	select	No	—

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-thermodynamics-gibbs-calculator": {
      "name": "thermodynamics-gibbs-calculator",
      "description": "Calculate Gibbs free energy ΔG = ΔH − TΔS, reaction spontaneity, equilibrium temperature, and equilibrium constant K.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=thermodynamics-gibbs-calculator",
      "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": "thermodynamics-gibbs-calculator",
    "arguments": {
  "mode": "gibbs",
  "dH": -726.4,
  "dS": -181,
  "temperature": 298.15,
  "tempUnit": "kelvin",
  "decimalPlaces": 3
}
  }
}

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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