# STEAM

Calculate thermodynamic and transport properties of steam based on IAPWS

Agent View of the PolicyLayer registry record for `STEAM`. HTML page: https://policylayer.com/tools/com-engscript-mcp/steam

## Facts

- Tool: `STEAM`
- Server: EngScript Engineering MCP (`https://engscript.com/mcp`) — https://policylayer.com/tools/com-engscript-mcp.md
- Homepage: https://github.com/https://engscript.com/mcp
- Risk category: Other (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 12 (2 required)
- Recommended policy verdict: Rate-limited

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `P` | object | yes | Pressure |
| `T` | object | yes | Temperature |
| `H_unit` | string | no | Enthalpy unit |
| `S_unit` | string | no | Entropy unit |
| `U_unit` | string | no | Internal energy unit |
| `k_unit` | string | no | Thermal conductivity unit |
| `Cp_unit` | string | no | Cp unit |
| `Cv_unit` | string | no | Cv unit |
| `mu_unit` | string | no | Viscosity unit |
| `rho_unit` | string | no | Density unit |
| `Psat_unit` | string | no | Saturation pressure unit |
| `Tsat_unit` | string | no | Saturation temperature unit |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "STEAM",
    "arguments": {
      "P": {},
      "T": {}
    }
  }
}
```

## Why STEAM is rated Low

Without any rule in front of it, every call an agent makes to STEAM happens silently: no trail, no cap, no way to know it misbehaved until something breaks downstream.

Risk signals: High parameter count (16 properties)

## Use case

AI agents call STEAM as a supporting operation in EngScript Engineering MCP workflows.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches EngScript Engineering MCP:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "STEAM": {
      "limits": [
        {
          "counter": "steam_rate",
          "window": "minute",
          "max": 60,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on EngScript Engineering MCP (57)

- `PIPEAIR` — Destructive — https://policylayer.com/tools/com-engscript-mcp/pipeair.md
- `PIPEFLOWGAS` — Destructive — https://policylayer.com/tools/com-engscript-mcp/pipeflowgas.md
- `PIPEFLOWLIQ` — Destructive — https://policylayer.com/tools/com-engscript-mcp/pipeflowliq.md
- `PIPENITROGEN` — Destructive — https://policylayer.com/tools/com-engscript-mcp/pipenitrogen.md
- `PIPESTEAM` — Destructive — https://policylayer.com/tools/com-engscript-mcp/pipesteam.md
- `PIPEWATER` — Destructive — https://policylayer.com/tools/com-engscript-mcp/pipewater.md
- `advDVR` — Other — https://policylayer.com/tools/com-engscript-mcp/advdvr.md
- `advECONOMIC` — Other — https://policylayer.com/tools/com-engscript-mcp/adveconomic.md
- `BALANCE` — Other — https://policylayer.com/tools/com-engscript-mcp/balance.md
- `CARBON` — Other — https://policylayer.com/tools/com-engscript-mcp/carbon.md
- `COMPPOLYEFF` — Other — https://policylayer.com/tools/com-engscript-mcp/comppolyeff.md
- `CTWRCAPA` — Other — https://policylayer.com/tools/com-engscript-mcp/ctwrcapa.md
- `CTWRCAPADSNTST` — Other — https://policylayer.com/tools/com-engscript-mcp/ctwrcapadsntst.md
- `CTWREVAPOR` — Other — https://policylayer.com/tools/com-engscript-mcp/ctwrevapor.md
- `CTWRLG` — Other — https://policylayer.com/tools/com-engscript-mcp/ctwrlg.md
- `CTWRNTU` — Other — https://policylayer.com/tools/com-engscript-mcp/ctwrntu.md
- `CVGAS` — Other — https://policylayer.com/tools/com-engscript-mcp/cvgas.md
- `CVLIQ` — Other — https://policylayer.com/tools/com-engscript-mcp/cvliq.md
- `CVSTEAM` — Other — https://policylayer.com/tools/com-engscript-mcp/cvsteam.md
- `DESUPERHEATER` — Other — https://policylayer.com/tools/com-engscript-mcp/desuperheater.md
- `DVR` — Other — https://policylayer.com/tools/com-engscript-mcp/dvr.md
- `ECONOMIC` — Other — https://policylayer.com/tools/com-engscript-mcp/economic.md
- `EMISSIONFACTOR` — Other — https://policylayer.com/tools/com-engscript-mcp/emissionfactor.md
- `FLUEGAS` — Other — https://policylayer.com/tools/com-engscript-mcp/fluegas.md
- `FORMULA` — Other — https://policylayer.com/tools/com-engscript-mcp/formula.md
- `FUELGAS` — Other — https://policylayer.com/tools/com-engscript-mcp/fuelgas.md
- `GN2DEPRESS` — Other — https://policylayer.com/tools/com-engscript-mcp/gn2depress.md
- `HEXRF` — Other — https://policylayer.com/tools/com-engscript-mcp/hexrf.md
- `HPADEPRESS` — Other — https://policylayer.com/tools/com-engscript-mcp/hpadepress.md
- `HTRINOUTEFF` — Other — https://policylayer.com/tools/com-engscript-mcp/htrinouteff.md
- …and 27 more: https://policylayer.com/tools/com-engscript-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=com-engscript-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/com-engscript-mcp