# Coolprop (npm · @pipeworx/mcp-coolprop)

coolprop — thermophysical fluid properties (PropsSI-style: give two independent state variables…

- Trust score: 78/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 80/100, [markdown](https://verifymcp.io/servers/pipeworx-io-coolprop/coolprop-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-coolprop/coolprop-mcp)
- npm · `@pipeworx/mcp-coolprop`: 78/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-coolprop/pipeworx-mcp-coolprop.md), [page](https://verifymcp.io/servers/pipeworx-io-coolprop/pipeworx-mcp-coolprop)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-coolprop`
- Version: `0.2.1`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-coolprop).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 4 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 60/100
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 580 tokens (~290/item across 2 items; 2 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
  - Structured output schemas are declared (100% of tools); any adoption earns full credit.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 2 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 3 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the Coolprop MCP server?

Coolprop runs locally as an npm package, launched with npx -y @pipeworx/mcp-coolprop. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add pipeworx-io-coolprop -- npx -y @pipeworx/mcp-coolprop
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-coolprop": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-coolprop"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-coolprop": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-coolprop"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-coolprop -- npx -y @pipeworx/mcp-coolprop
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "pipeworx-io-coolprop": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@pipeworx/mcp-coolprop"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add pipeworx-io-coolprop --command npx --arg -y --arg @pipeworx/mcp-coolprop
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-coolprop:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-coolprop"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-coolprop": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-coolprop"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-coolprop -t stdio -c npx -a -y @pipeworx/mcp-coolprop
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-coolprop": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-coolprop"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-01 (score 78, +15)

- [security improvement] Malware scan: unverified → pass

### 2026-10-31 (score 63)

First indexed and scored.

## MCP tools (2)

### `coolprop_fluid_properties` (~451 tokens)

Thermophysical properties of a pure fluid, computed from two independent state variables (PropsSI-style — give e.g. temperature + pressure, get density, enthalpy, entropy, viscosity, thermal conductivity, specific heat, phase, ...). Covers ~124 fluids (water, refrigerants, hydrocarbons, cryogens, ...) via CoolProp (open-source, MIT), computed in-process rather than looked up from a table — valid over each fluid's full equation-of-state range, not just tabulated points. No aliases: call coolprop_list_fluids for exact names (e.g. "CarbonDioxide", not "CO2").

Input parameters:

- `fluid` (string, required): Exact CoolProp fluid name, e.g. "Water", "Nitrogen", "R134a", "CarbonDioxide" — see coolprop_list_fluids for the full list (no aliases)
- `input1_name` (string, required): First independent state variable code: T (temperature, K), P (pressure, Pa), D (mass density, kg/m3), H (mass enthalpy, J/kg), S (mass entropy, J/kg/K), U (mass internal energy, J/kg), or Q (vapor qu…
- `input1_value` (number, required): Value for input1_name, SI units
- `input2_name` (string, required): Second independent state variable code — must differ from input1_name. Same code set as input1_name.
- `input2_value` (number, required): Value for input2_name, SI units
- `outputs` (array, required): Property codes to compute, up to 12 per call: T, P, D (density kg/m3), H (enthalpy J/kg), S (entropy J/kg/K), U (internal energy J/kg), Q (vapor quality), CPMASS (isobaric specific heat J/kg/K), CVMA…

Output parameters:

- `failed_outputs` (object)
- `fluid` (string)
- `inputs` (array)
- `outputs` (object)
- `source` (string)

### `coolprop_list_fluids` (~76 tokens)

The exact canonical fluid names this CoolProp build recognizes for coolprop_fluid_properties (~124 fluids: water, common refrigerants, hydrocarbons, cryogens, siloxanes, ...). No aliases — e.g. "CarbonDioxide", not "CO2"; use this list rather than guessing a short name.

Output parameters:

- `count` (number)
- `fluids` (array)
- `source` (string)

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/pipeworx-io-coolprop/pipeworx-mcp-coolprop#diagnostics

## Score history

- 2026-11-05: 78
- 2026-11-04: 78
- 2026-11-03: 78
- 2026-11-02: 78
- 2026-11-01: 78
- 2026-10-31: 63

## Common questions

### What is the Coolprop MCP server?

Coolprop is an MCP server listed in the public MCP registry as io.github.pipeworx-io/coolprop. coolprop, thermophysical fluid properties (PropsSI-style: give two independent state variables… This page covers its npm package (@pipeworx/mcp-coolprop).

### Is the Coolprop MCP server safe to use?

Coolprop scores 78 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Coolprop MCP server expose?

Coolprop exposes 2 tools: coolprop_fluid_properties, coolprop_list_fluids. Their descriptions and schemas cost roughly 527 tokens of context every time the server is loaded.

### Is the Coolprop MCP server still maintained?

Coolprop is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Coolprop MCP server under?

Coolprop declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

### What did VerifyMCP test on the Coolprop MCP server?

VerifyMCP ran 15 checks on Coolprop, covering Malware scan, Known CVEs, Install scripts, Dependency health and 11 more. One item could not be completed, a gap on our side rather than a finding about Coolprop: Stability. One category scores 0 for that reason, because we only credit what we can confirm. Endpoint Security and Transport & Reachability do not apply to an npm package, so they were not tested. The score does not measure everything, and the scoring documentation lists what it leaves out.

## Links

- npm package: https://www.npmjs.com/package/@pipeworx/mcp-coolprop
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-coolprop
- Repository: https://github.com/pipeworx-io/mcp-coolprop
- Website: https://pipeworx.io/packs/coolprop
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-coolprop/pipeworx-mcp-coolprop.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-coolprop/pipeworx-mcp-coolprop/changelog.json
- Trust report (JSON): https://verifymcp.io/servers/pipeworx-io-coolprop/pipeworx-mcp-coolprop.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-coolprop/pipeworx-mcp-coolprop