MoldSim MCP Server — Claude Code MCP server for injection molding
An MCP server that hands your AI assistant injection molding knowledge: 21 material grades, process validation, DFM checklists and simulation specs.
claude mcp add moldsim-mcp -- npx -y moldsim-mcpWhat MoldSim MCP Server does
MoldSim plugs an injection molding reference into any MCP-capable assistant. Six tools come with it: knowledge base search, material properties, process parameter validation, simulation spec generation, material comparison and a DFM checklist. The material set covers 21 grades, from ABS and PP through PA66-GF30 and PBT-GF30, each with Cross-WLF viscosity, Tait PVT, thermal and mechanical data plus a processing window.
Validation compares your numbers against that window. The docs show ABS at 280 °C melt returning an error because it sits above the 260 °C ceiling and risks degradation, while PA66 at 40 °C mold temperature gets a warning about poor crystallization below the 70 °C floor. The DFM checklist runs more than 15 rule checks with pass, warn and fail ratings — wall thickness, ribs, draft, bosses, gating, shrinkage, venting.
Startup goes through npx, so nothing needs installing first. Under the hood it is Node.js and TypeScript, with search over a local embedded Qdrant database and HuggingFace transformers for embeddings. The knowledge stays software-agnostic: it applies to Moldflow, Moldex3D, CADMOULD, SIGMASOFT and SolidWorks Plastics alike.
What it helps with
- match process settings to a material's processing window
- trace the causes of warpage and sink marks
- compare 2–4 materials on stiffness, shrinkage and heat resistance
- turn a part description into a simulation spec
- run DFM checks on walls, ribs and draft
Example prompts for the agent
- What causes warpage in glass-filled nylon parts?
- Validate: ABS at 245C melt, 60C mold, 2.5mm wall
How to install MoldSim MCP Server
Platform CLI
claude mcp add moldsim-mcp -- npx -y moldsim-mcpPlatform CLI
codex mcp add moldsim-mcp-server -- npx -y moldsim-mcpConfig file
{
"mcpServers": {
"moldsim-mcp-server": {
"command": "npx",
"args": [
"-y",
"moldsim-mcp"
]
}
}
}Config file
{
"servers": {
"moldsim-mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"moldsim-mcp"
]
}
}
}Platform CLI
gemini mcp add moldsim-mcp-server npx -y moldsim-mcpStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about MoldSim MCP Server
How do I install MoldSim MCP Server in Claude Code?
Run claude mcp add moldsim-mcp -- npx -y moldsim-mcp. After that the assistant calls MoldSim tools on its own whenever injection molding comes up.
What does MoldSim MCP Server do?
It gives an assistant molding simulation knowledge: material properties, process validation, defect troubleshooting, material comparison and DFM checklists, all exposed as MCP tools.
Which simulation packages does it work with?
The knowledge is not tied to one package and applies to Autodesk Moldflow, Moldex3D, CADMOULD, SIGMASOFT and SolidWorks Plastics.
