What is SolidworksMCP-TS CLAUDE.md?

A project guide for building, testing, and understanding a SolidWorks MCP server. SolidWorks is software for computer-aided design, and MCP connects tools to an AI agent.

Building, testing, linting, and extending the SolidWorks server, including its Windows integration and mocked tests.

It gives developers the project commands, architecture, platform requirements, and testing details needed to work on the server.

How vespo92/SolidworksMCP-TS configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to vespo92/SolidworksMCP-TS. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/vespo92/SolidworksMCP-TS/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/vespo92/SolidworksMCP-TS

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/vespo92/solidworksmcp-ts/claude-md.svg)](https://agentmods.dev/instructions/vespo92/solidworksmcp-ts/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/vespo92/solidworksmcp-ts/claude-md"><img src="https://agentmods.dev/badge/instructions/vespo92/solidworksmcp-ts/claude-md.svg" alt="Measured on agentmods" height="20"></a>

Per session 567 This file is loaded in full into every session.

When invoked 567 The same file — it is already loaded in full.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00567	$0.00567
Opus 5	$0.00283	$0.00283
Sonnet 5	$0.00113	$0.00113
Haiku 4.5	$0.00057	$0.00057

Measured 8d ago against content hash 8f765cf225ac, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

SolidworksMCP-TS CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 46 lines

How it starts

The opening of the file, as written. The whole thing — 46 lines — stays where its author put it; the contents beside it link to each section on GitHub.

SolidWorks MCP Server

Build & Test

npm run build        # TypeScript compile (tsc)
npm run dev          # Hot-reload dev server (tsx watch)
npm test             # Run unit tests (vitest)
npm run test:watch   # Watch mode tests
npm run lint         # Biome lint check
npm run lint:fix     # Biome auto-fix
npm run format       # Biome format
npm run check        # TypeScript + Biome in one command
npm run typecheck    # Type check without emit

Important: This project requires Windows + SolidWorks to run. The winax native module only compiles on Windows and is an optional dependency. On non-Windows, use npm install --ignore-scripts. Tests use USE_MOCK_SOLIDWORKS=true by default for cross-platform CI.

Architecture

MCP Server (src/index.ts) - Entry point, registers tools via stdio transport
Adapters (src/adapters/) - COM bridge layer with intelligent routing:
- winax-adapter.ts - Direct COM via winax
- winax-adapter-enhanced.ts - Enhanced adapter with complexity analysis
- feature-complexity-analyzer.ts - Routes operations between direct COM and VBA macro fallback
- macro-generator.ts - Generates VBA code for complex operations
Tools (src/tools/) - MCP tool implementations (modeling, sketch, drawing, export, analysis, VBA)
Core API (src/solidworks/api.ts) - Low-level SolidWorks COM interface

Key Patterns

COM Interop

Never pass null to COM optional parameters - use undefined instead. COM interprets null as VT_NULL which causes type mismatch errors. This is the root cause of SelectByID2 failures.
Prefer feature tree traversal over SelectByID2 for sketch selection. Use FeatureByPositionReverse() + GetTypeName2() to find sketches reliably.
Operations with >12 parameters automatically fall back to VBA macro execution.

Code Style

ESM modules ("type": "module" in package.json)
Zod schemas for all tool input validation
Winston logging (never use console.* - it breaks JSON-RPC stdio transport)
@ts-ignore on winax imports is intentional (no type definitions exist)

Read the full file on GitHub · 46 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

8d ago First seen · 46 lines · 567 tokens per session scan A 8f765cf225ac

Subscribe to this mod's changes

SolidworksMCP-TS CLAUDE.md is an instructions file published in the GitHub repository vespo92/SolidworksMCP-TS (225 stars, last pushed 4mo ago), licensed MIT. It adds 567 tokens to every session, about $0.0028 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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vscode buildNext.instructions.md

Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).

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SolidworksMCP-TS: Instructions file for Claude Code