CAD MCP Server

NPM · CAD-MCP-SERVER · SCANNED AUG 3

STEP file inspection for AI. Measure walls, draft angles, clearances. Returns facts, not guesses.

Available components

−12 this week 77 77 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security81

No malware found by supply-chain analysis.Pass
Only part of the dependency tree could be resolved (2 of 3), so this covers what we could see, not the whole tree.Partial
No install/post-install scripts declared.Pass
Only part of the dependency tree could be resolved (2 of 3), so this covers what we could see, not the whole tree. View diagnostics → Partial

Provenance & Transparency97

Source repository is publicly reachable at the declared URL. View diagnostics → Pass
Cryptographically verified build provenance (signed, bound to mattmohandiss/cad-mcp-server). View diagnostics → Pass
Clear OSI-approved license (MIT).Pass
Actively maintained (last published 25 days ago).Pass
Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail

Schema Quality & AI Usability78

100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
AI-judged instruction clarity (good).Pass
Context-footprint check failed: tool/resource definitions use about 1294 tokens (~143/item across 9 items; 8 tools + 1 resources), over budget; trim descriptions and params. See how to fix → Fail
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management23

Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial

Tool Coverage94

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
82% of tool parameters carry a description.Partial

Capabilities100

Implements a current MCP spec version (2026-07-28).Pass

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · cad-mcp-server

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add mattmohandiss-cad-mcp-server -- npx -y cad-mcp-server

# add to Codex CLI

codex mcp add mattmohandiss-cad-mcp-server -- npx -y cad-mcp-server

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "mattmohandiss-cad-mcp-server": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "cad-mcp-server"
      ],
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add mattmohandiss-cad-mcp-server --command npx --arg -y --arg cad-mcp-server

# ~/.hermes/config.yaml

mcp_servers:
  mattmohandiss-cad-mcp-server:
    command: "npx"
    args: ["-y", "cad-mcp-server"]

// mcp.json

{
  "mcpServers": {
    "mattmohandiss-cad-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "cad-mcp-server"
      ]
    }
  }
}

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

2 Aug 26 +16
- Malware scan: unverified → pass ▲ security
- Stability: unverified → 0.20 ▲ functional
- MCP protocol: Implements a current MCP spec version (2026-07-28). functional
31 Jul 26 −10
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
30 Jul 26 −18
- Malware scan: pass → unverified ▼ security
27 Jul 26 +33
- Tool coverage: unverified → 100 ▲ functional
- Schema quality: unverified → 100 ▲ functional
- First check of Schema quality: fail functional
- First check of Schema quality: fail functional
- First check of Schema quality: good functional
- First check of Tool coverage: 82 functional
26 Jul 26 56

First indexed and scored.
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional

Show 3 earlier entries Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Analysed npm/[email protected]

Provenance verified

Ecosystem: npm · Outcome: verified

Reason: verified

Source repo:: mattmohandiss/cad-mcp-server
Certificate issuer:: https://token.actions.githubusercontent.com
Certificate SAN:: https://github.com/mattmohandiss/cad-mcp-server/.github/workflows/release-please.yml@refs/heads/main
Rekor log index:: 2118578286
Predicate type:: https://slsa.dev/provenance/v1
Subject digest:: sha512:4c17785f753313f534bd618ef039addb2e994cae984798b630b56b8aaa38fd51c9364237f8b57513b9e707277f7343ade8395300095a0ba26af0d856b
Discovery method:: attestation_endpoint

Dependencies 2 packages

2 packages in the resolved dependency tree · 2 deprecated.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 8 exposed · ~1,259 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

diff_step ~62

Compare two STEP files. Returns deltas: volume, surface area, dimensions, face/edge/body counts. Comparison minus baseline.

Input Output Examples

Name	Type	Req	Description
baseline_file_path	string	yes	Path to baseline STEP file.
comparison_file_path	string	yes	Path to comparison STEP file.

No output schema declared.

No examples provided.

find_edges ~98

Find edges by curve type, length, radius, or dihedral angle. Returns IDs, curve types, lengths, radii, diameters. Use returned IDs in measure_distance or measure_geometry.

Input Output Examples

Name	Type	Req	Description
file_path	string	yes	Path to STEP file on local filesystem.
filters	object	—	—
include	array	—	—
max_results	integer	—	—
sort	string	—	—
summarize	object	—	—

No output schema declared.

No examples provided.

find_faces ~129

Find faces by type, area, radius, normal, quality, or body. Returns IDs, surface types, areas, radii, diameters, axes, normals. Use returned IDs in measure_distance, measure_thickness, measure_draft, or measure_geometry.

Input Output Examples

Name	Type	Req	Description
file_path	string	yes	Path to STEP file on local filesystem.
filters	object	—	—
include	array	—	Result detail presets. Omit for basic face identity, area, bounds, and adjacency.
max_results	integer	—	—
sort	string	—	—
summarize	object	—	—

No output schema declared.

No examples provided.

inspect_step ~91

Use this FIRST for a compact model overview: dimensions, bounding box, body/face/edge counts, validity, watertight status. Use include[] for bodies, quality, pmi, inertia, or topology detail.

Input Output Examples

Name	Type	Req	Description
file_path	string	yes	Path to STEP file on local filesystem.
include	array	—	Detail presets. Default: size, counts, health. Add more for detailed analysis.

No output schema declared.

No examples provided.

measure_distance ~178

Measure distance between entity sets. Pass sources[] and targets[] for set-based measurement (e.g. clearance between holes and walls). Use summary="minimum" for the closest pair only.

Input Output Examples

Name	Type	Req	Description
entity_ids	array	—	Source entity IDs (legacy mode with target_entity_id). Prefer sources/targets for set mode.
file_path	string	yes	Path to STEP file on local filesystem.
include_extrema	boolean	—	Include closest point pairs with coordinates.
sources	array	—	Source entity IDs for set-based distance. Use with targets for clearance checks.
summary	string	—	all = return every pair; minimum = return only the closest pair.
target_entity_id	string	—	Single target entity ID. Use when sources is omitted with entity_ids.
targets	array	—	Target entity IDs for set-based distance.

No output schema declared.

No examples provided.

measure_draft ~122

Measure draft angles of faces relative to a pull direction. Returns draft_angle_deg, normal, and undercut flag per face. Positive = good for ejection; negative = undercut.

Input Output Examples

Name	Type	Req	Description
faces	array	yes	Face IDs to check draft angle on.
file_path	string	yes	Path to STEP file on local filesystem.
pull_direction	array	—	Pull direction [x,y,z]. Mutually exclusive with pull_direction_mode.
pull_direction_mode	string	—	Direction shortcut. axis = along the face axis; normal = along the face normal.

No output schema declared.

No examples provided.

measure_geometry ~407

Ray tests, point analysis, cross-sections, and edge continuity. measurement_type selects the operation: ray, ray_grid, point_analysis, section, or continuity.

Input Output Examples

Name	Type	Req	Description
analyze	string	—	Section analysis mode. edge_count = count and describe edges; thickness = measure section thickness.
bidirectional	boolean	—	Fire rays in both directions. Used by ray_grid.
checks	array	—	Checks to perform at each point. Required for point_analysis.
detail	string	—	stats = min/max/avg; samples = hit coordinates; hits = full grid results.
direction	array	—	Ray direction [x,y,z]. Used by ray, ray_grid.
direction_mode	string	—	Direction shortcut. axis = along entity axis; normal = along entity normal.
entity_ids	array	yes	Entity IDs from find_faces/find_edges or inspect_step bodies.
file_path	string	yes	Path to STEP file on local filesystem.
max_distance	number	—	Maximum ray distance mm. If set, ray becomes bounded (ray_test_segment).
measurement_type	string	yes	ray = single ray from origin in direction; ray_grid = grid of rays across entity; point_analysis = classify/project/curvature at points; section = planar cross-section; continuity = edge smoothness b…
origin	array	—	Ray origin [x,y,z]. Used by ray. Mutually exclusive with origin_mode.
origin_mode	string	—	Origin shortcut relative to entity bounding box. Used by ray.
plane_normal	array	—	Normal of cutting plane. Required for section.
plane_origin	array	—	Point on cutting plane. Required for section.
points	array	—	3D points to analyze. Required for point_analysis.
spacing_mm	number	—	Grid spacing mm. Used by ray_grid. Default 2.
tolerance	number	—	Tolerance mm for point checks. Default 0.01.

No output schema declared.

No examples provided.

measure_thickness ~172

Measure wall thickness across faces via ray grid sampling. Returns min/max/avg thickness per face. Use direction_mode="normal" (default) or direction_mode="axis".

Input Output Examples

Name	Type	Req	Description
bidirectional	boolean	—	Fire rays in both directions. Default true for thickness.
detail	string	—	stats = min/max/avg only; samples = include hit coordinates.
direction	array	—	Ray direction [x,y,z]. Mutually exclusive with direction_mode.
direction_mode	string	—	Direction shortcut. axis = along the face axis; normal = along the face normal.
faces	array	yes	Face IDs to measure wall thickness across.
file_path	string	yes	Path to STEP file on local filesystem.
spacing_mm	number	—	Grid spacing in mm. Smaller = denser sampling.

No output schema declared.

No examples provided.

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Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

26 Jul 3 Aug

Day	Score
26 Jul	56
27 Jul	89
28 Jul	89
30 Jul	71
31 Jul	61
1 Aug	61
2 Aug	77
3 Aug	77