Validated 3D CAD modeling for AI agents via CAiD + CadQuery. 54 tools with geometry validation.
CAiD MCP server exists for a simple reason — assistants are far more useful when they can act on CAiD directly instead of describing what you should do. Validated 3D CAD modeling for AI agents via CAiD + CadQuery. 54 tools with geometry validation.
Every geometry operation is validated through CAiD's ForgeResult system, which tracks volume, surface area, and diagnostics. If a boolean silently fails (common with OCCT), the validation layer catches it and tells you why.
Once CAiD is connected, these are the calls the assistant has available:
Category — Countprimitives — 7modify — 4transforms — 4booleans — 4query — 6view — 2scene — 5export — 5heal — 3assembly — 5compound — 3The server ships on PyPI as caid, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
You will need one environment variable: CAID_OUTPUT_DIR. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.
This sits in the developer tooling group, where several servers overlap in what they claim to do but differ sharply once you actually set them up. CAiD's toolset — Category, primitives, modify and 11 more — is a fair guide to whether it matches your workflow. It is maintained by dreliq9; worth a glance at recent repository activity before you build anything load-bearing on it.
This entry was verified against CAiD's own documentation before publication; SyncDev keeps the directory reviewed rather than auto-generated.
| Tool | What it does |
|---|---|
| Category | Count |
| primitives | 7 |
| modify | 4 |
| transforms | 4 |
| booleans | 4 |
| query | 6 |
| view | 2 |
| scene | 5 |
| export | 5 |
| heal | 3 |
| assembly | 5 |
| compound | 3 |
| advanced | 3 |
| Prerequisites | The Prerequisites tool exposed by this server. |
{
"mcpServers": {
"caid": {
"command": "uvx",
"args": ["caid"],
"env": {
"CAID_OUTPUT_DIR": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| CAID_OUTPUT_DIR | Filesystem location the server is allowed to use. | Optional |
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