# MoldSim MCP Server [Health: Active]

**Category:** 🏭 Industrial & IoT  
**Repository:** https://github.com/kobzevvv/moldsim-mcp  
**GitHub Stars:** 7  
**npm Downloads (last month):** 171  
**Views:** 4  
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**Directory Page:** https://allmcps.com/mcp/moldsim-mcp-server

## Description
Injection molding simulation expertise — materials, process validation, and DFM checks

## Tools
Capabilities this server exposes over MCP:

- **query_simulation_knowledge** — Free-text Q&A against the knowledge base. Ask about defects, DFM rules, mesh strategies, process optimization.
- **get_material_properties** — Material property lookup. Returns Cross-WLF viscosity, Tait PVT, thermal, processing window, and mechanical data.
- **validate_process_parameters** — Checks your process parameters against the material's processing window. Flags errors, warnings, and provides suggestions.
- **generate_simulation_spec** — Natural language → structured simulation specification. Describe the part and get back analysis types, mesh recommendations, process conditions, and expected outputs.
- **compare_materials** — Side-by-side comparison of 2-4 materials. Processing windows, thermal properties, mechanical data, and auto-generated key differences.
- **generate_dfm_checklist** — Design for Manufacturability checklist with pass/warn/fail ratings. Input part parameters and get 15+ DFM rule checks.

## Claude Desktop Quick Installation
Install path detected from listing signals. Uses `npx` (confidence: high):

```json
"mcpServers": {
  "moldsim-mcp-server": {
    "command": "npx",
    "args": ["-y","moldsim-mcp"]
  }
}
```

## Documentation

## What MoldSim MCP Server MCP server does

MoldSim MCP Server MCP server gives MCP-compatible AI assistants access to injection molding simulation reference data and engineering checks. Its coverage includes material behavior, processing windows, common molding defects, mesh selection, cooling, process optimization, and design for manufacturability. The knowledge is software-agnostic and is intended to apply across Autodesk Moldflow, Moldex3D, CADMOULD, SIGMASOFT, and SolidWorks Plastics.

The material database includes 21 listed grades, including ABS, PP, PA6, PA66, PA66-GF30, PC, PC/ABS, POM, PBT, PET, TPU, ASA, and others. Returned data can include Cross-WLF viscosity parameters, Tait PVT data, thermal and mechanical properties, processing windows, and fiber-related effects where applicable.

## How it works

The server exposes six MCP tools. Free-text questions go to a knowledge query tool for topics such as short shots, sink marks, warpage, weld lines, burn marks, jetting, splay, voids, flow marks, mesh strategies, cooling, and cycle time. Material lookups return structured property data, while process validation compares supplied values such as melt temperature and mold temperature with the selected material's processing range.

Natural-language part descriptions can be converted into a structured simulation specification. The result may recommend analysis stages such as Fill, Pack, Cool, and Warp, along with mesh approaches, process conditions, and expected outputs. Material comparison accepts two to four materials and reports differences in processing, thermal behavior, mechanical data, shrinkage, stiffness, or heat resistance. DFM analysis evaluates supplied part parameters with pass, warning, or fail results across more than 15 rules.

## Setup and configuration

MoldSim MCP Server MCP server runs on Node.js and is distributed as an npm package. Claude Code can add it with `claude mcp add moldsim -- npx -y moldsim-mcp`. Claude Desktop uses an MCP configuration entry whose command is `npx` and whose argument is `-y moldsim-mcp`.

For a source installation, clone the repository, run `npm install`, build with `npm run build`, and point the MCP client to `node dist/index.js`. The implementation uses TypeScript, a local embedded Qdrant vector database, and HuggingFace transformers for embeddings. No environment variables are specified in the provided setup instructions.

## Tools and capabilities

- `query_simulation_knowledge`: Ask free-text questions about simulation, defects, DFM, meshing, or process optimization.
- `get_material_properties`: Retrieve material, viscosity, PVT, thermal, mechanical, and processing data.
- `validate_process_parameters`: Check process values against a material's processing window and return errors, warnings, and suggestions.
- `generate_simulation_spec`: Convert a part description into recommended analyses, mesh guidance, conditions, and outputs.
- `compare_materials`: Compare two to four materials side by side.
- `generate_dfm_checklist`: Run more than 15 DFM checks against part inputs.

## Limitations and notes

MoldSim MCP Server MCP server provides reference knowledge and rule-based checks rather than running Moldflow, Moldex3D, or another simulation package. Its material coverage is limited to the 21 grades included in the database. Results depend on the part details, material selection, and process parameters supplied to the tools.

_Full upstream README: https://allmcps.com/mcp/moldsim-mcp-server/readme_