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HBPEKING-TKS

COMSOL MCP Server

by HBPEKING-TKS

COMSOL MCP Server

MCP Server for COMSOL Multiphysics simulation automation via AI agents.

CI License: MIT Python 3.10+

Project Goal

Build a complete COMSOL MCP Server enabling AI agents (like Claude, opencode) to perform multiphysics simulations through the MCP protocol:

  1. Model Management - Create, load, save, version control

  2. Geometry Building - Blocks, cylinders, spheres, boolean operations

  3. Physics Configuration - Heat transfer, fluid flow, electrostatics, solid mechanics

  4. Meshing & Solving - Auto mesh, stationary/time-dependent studies

  5. Results Visualization - Evaluate expressions, export plots

  6. Knowledge Integration - Embedded guides + PDF semantic search

Related MCP server: pyNastran MCP Server

Requirements

  • COMSOL Multiphysics (version 5.x or 6.x)

  • Python 3.10+ (NOT Windows Store version)

  • Java runtime (required by MPh/COMSOL)

Installation

# Clone repository
git clone https://github.com/HBPEKING-TKS/mcp_server.git
cd comsol-multiphysics-mcp

# Install dependencies
python -m pip install -e .

# Test server
python -m src.server

Building PDF Knowledge Base

# Install additional dependencies
pip install pymupdf chromadb sentence-transformers

# Build knowledge base (requires COMSOL PDF documentation)
python scripts/build_knowledge_base.py

# Check status
python scripts/build_knowledge_base.py --status

Usage

Option 1: With opencode

Create opencode.json in project root:

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "comsol": {
      "type": "local",
      "command": ["python", "-m", "src.server"],
      "enabled": true,
      "environment": {
        "HF_ENDPOINT": "https://hf-mirror.com"
      },
      "timeout": 30000
    }
  }
}

Option 2: With Claude Desktop

{
  "mcpServers": {
    "comsol": {
      "command": "python",
      "args": ["-m", "src.server"],
      "cwd": "/path/to/comsol-multiphysics-mcp"
    }
  }
}

Code Structure

comsol-multiphysics-mcp/
├── opencode.json                    # MCP server config for opencode
├── pyproject.toml                   # Python project config
├── README.md                        # This file
├── LICENSE                          # MIT License
│
├── src/
│   ├── server.py                    # MCP Server entry point
│   ├── tools/
│   │   ├── session.py               # COMSOL session management (start/stop/status)
│   │   ├── model.py                 # Model CRUD + versioning
│   │   ├── parameters.py            # Parameter management + sweeps
│   │   ├── geometry.py              # Geometry creation (block/cylinder/sphere)
│   │   ├── physics.py               # Physics interfaces + boundary conditions
│   │   ├── mesh.py                  # Mesh generation
│   │   ├── study.py                 # Study creation + solving (sync/async)
│   │   └── results.py               # Results evaluation + export
│   ├── resources/
│   │   └── model_resources.py       # MCP resources (model tree, parameters)
│   ├── knowledge/
│   │   ├── embedded.py              # Embedded physics guides + troubleshooting
│   │   ├── retriever.py             # PDF vector search retriever
│   │   ├── pdf_processor.py         # PDF chunking + embedding
│   │   └── prompts/                 # Reference docs (API, physics, workflow)
│   ├── async_handler/
│   │   └── solver.py                # Async solving with progress tracking
│   └── utils/
│       └── versioning.py            # Model version path management
│
├── scripts/
│   └── build_knowledge_base.py      # Build PDF vector database
│
├── comsol_models/                   # Saved models (structured)
│   └── {model_name}/
│       ├── {model_name}_{timestamp}.mph
│       └── {model_name}_latest.mph
│
└── tests/
    └── test_basic.py                # Unit tests

Available Tools (80+ total)

Session (4)

Tool

Description

comsol_start

Start local COMSOL client

comsol_connect

Connect to remote server

comsol_disconnect

Clear session

comsol_status

Get session info

Model (9)

Tool

Description

model_load

Load .mph file

model_create

Create empty model

model_save

Save to file

model_save_version

Save with timestamp

model_list

List loaded models

model_set_current

Set active model

model_clone

Clone model

model_remove

Remove from memory

model_inspect

Get model structure

Parameters (5)

Tool

Description

param_get

Get parameter value

param_set

Set parameter

param_list

List all parameters

param_sweep_setup

Setup parametric sweep

param_description

Get/set description

Geometry (14)

Tool

Description

geometry_list

List geometry sequences

geometry_create

Create geometry sequence

geometry_add_block

Add rectangular block

geometry_add_cylinder

Add cylinder

geometry_add_sphere

Add sphere

geometry_boolean_union

Union objects

geometry_boolean_difference

Subtract objects

geometry_import

Import CAD file

geometry_build

Build geometry

...

...

Physics (16)

Tool

Description

physics_add_electrostatics

Add Electrostatics

physics_add_solid_mechanics

Add Solid Mechanics

physics_add_heat_transfer

Add Heat Transfer

physics_add_laminar_flow

Add Laminar Flow

physics_configure_boundary

Configure boundary condition

multiphysics_add

Add coupling

physics_setup_heat_boundaries

Configure heat boundaries

physics_setup_flow_boundaries

Configure flow boundaries

...

...

Study & Solving (8)

Tool

Description

study_list

List studies

study_solve

Solve synchronously

study_solve_async

Solve in background

study_get_progress

Get progress

study_cancel

Cancel solving

study_wait

Wait for completion

Results (9)

Tool

Description

results_evaluate

Evaluate expression

results_global_evaluate

Evaluate scalar

results_inner_values

Get time steps

results_outer_values

Get sweep values

results_export_data

Export data

results_export_image

Export plot image

Knowledge (8)

Tool

Description

docs_get

Get documentation

docs_list

List available docs

physics_get_guide

Physics quick guide

troubleshoot

Troubleshooting help

modeling_best_practices

Best practices

pdf_search

Search PDF docs

pdf_search_status

PDF search status

pdf_list_modules

List PDF modules

Key Technical Discoveries

MPh Library API Patterns

# Access Java model via property (not callable)
jm = model.java  # NOT model.java()

# Create component with True flag
comp = jm.component().create('comp1', True)

# Create 3D geometry
geom = comp.geom().create('geom1', 3)

# Boundary condition with selection
bc = physics.create('inl1', 'InletBoundary')
bc.selection().set([1, 2, 3])
bc.set('U0', '1[mm/s]')

Boundary Condition Property Names

Physics

Condition

Property

Heat Transfer

HeatFluxBoundary

q0

Heat Transfer

TemperatureBoundary

T0

Heat Transfer

ConvectiveHeatFlux

h, Text

Laminar Flow

InletBoundary

U0

Laminar Flow

OutletBoundary

p0

Model Versioning

Models are saved with structured paths:

./comsol_models/{model_name}/{model_name}_{timestamp}.mph
./comsol_models/{model_name}/{model_name}_latest.mph

MCP Resources

URI

Description

comsol://session/info

Session information

comsol://model/{name}/tree

Model tree structure

comsol://model/{name}/parameters

Model parameters

comsol://model/{name}/physics

Physics interfaces

License

MIT

Install Server
A
license - permissive license
B
quality
C
maintenance

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Release cycle
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