# KerfScript (npm · @mylasertools/kerfscript-mcp)

Write, check and render parametric laser-cutting designs in KerfScript, as SVG or DXF.

- Trust score: 67/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `mcp.mylasertools.com`: 63/100, [markdown](https://verifymcp.io/servers/com-mylasertools-kerfscript/mcp.md), [page](https://verifymcp.io/servers/com-mylasertools-kerfscript/mcp)
- npm · `@mylasertools/kerfscript-mcp`: 67/100 (this document), [markdown](https://verifymcp.io/servers/com-mylasertools-kerfscript/mylasertools-kerfscript-mcp.md), [page](https://verifymcp.io/servers/com-mylasertools-kerfscript/mylasertools-kerfscript-mcp)

## Channel facts

- Registry: `npm`
- Package: `@mylasertools/kerfscript-mcp`
- Version: `0.1.1`
- Transport: `stdio`

## Trust breakdown

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. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 30 of 92 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 48/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (AGPL-3.0-only).
  - Actively maintained (last published 3 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 59/100
  - AI-judged instruction clarity (fair).
  - Tool/resource definitions use about 381 tokens (~95/item across 4 items; 4 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 13/100
  - Stability observed for 4 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 71/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 13% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the KerfScript MCP server?

KerfScript runs locally as an npm package, launched with npx -y @mylasertools/kerfscript-mcp. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add com-mylasertools-kerfscript -- npx -y @mylasertools/kerfscript-mcp
```

### Cursor

```json
{
  "mcpServers": {
    "com-mylasertools-kerfscript": {
      "command": "npx",
      "args": [
        "-y",
        "@mylasertools/kerfscript-mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "com-mylasertools-kerfscript": {
      "command": "npx",
      "args": [
        "-y",
        "@mylasertools/kerfscript-mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add com-mylasertools-kerfscript -- npx -y @mylasertools/kerfscript-mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "com-mylasertools-kerfscript": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@mylasertools/kerfscript-mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add com-mylasertools-kerfscript --command npx --arg -y --arg @mylasertools/kerfscript-mcp
```

### Hermes

```yaml
mcp_servers:
  com-mylasertools-kerfscript:
    command: "npx"
    args: ["-y", "@mylasertools/kerfscript-mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "com-mylasertools-kerfscript": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@mylasertools/kerfscript-mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add com-mylasertools-kerfscript -t stdio -c npx -a -y @mylasertools/kerfscript-mcp
```

### Other

```json
{
  "mcpServers": {
    "com-mylasertools-kerfscript": {
      "command": "npx",
      "args": [
        "-y",
        "@mylasertools/kerfscript-mcp"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-04 (score 67, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-02 (score 66, +1)

No change was recorded against any check on this day. Stability & Change Management went from 0 to 3. That category is still filling its 30-day observation window: 0 days of observed history at the previous scan, 1 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 65)

First indexed and scored.

## MCP tools (4)

### `kerfscript_docs` (~57 tokens)

Read KerfScript language and JavaScript integration documentation for building laser-cutting generators. Omit topic to list guides. Long guides are paginated with nextOffset.

Input parameters:

- `offset` (integer)
- `topic` (string)

### `kerfscript_examples` (~60 tokens)

Find working parametric laser-cutting examples by title, id or tags. Supply an id from the results to get its .kerf source.

Input parameters:

- `id` (string)
- `offset` (integer)
- `query` (string)

### `kerfscript_parameters` (~40 tokens)

Extract editable settings and customizer ranges from .kerf source to build a generator UI. Parses without rendering geometry.

Input parameters:

- `source` (string, required)

### `kerfscript_render` (~172 tokens)

Render .kerf source to SVG or DXF files, one per sheet, with part sizes, layers and warnings. Uses millimetres and bundled Atkinson font. No filesystem or network imports. Bounded to 100 parts and 10 sheets. For production generators install @mylasertools/kerfscript locally.

Input parameters:

- `format` (string)
- `gap` (number)
- `kerf` (number)
- `layout` (string)
- `libraries` (object): Optional virtual libraries keyed by the exact use/include path. No files or URLs are fetched.
- `margin` (number)
- `params` (object)
- `sheet` (array)
- `source` (string, required): KerfScript program. Lengths are millimetres; angles are degrees.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/com-mylasertools-kerfscript/mylasertools-kerfscript-mcp#diagnostics

## Score history

- 2026-11-05: 67
- 2026-11-04: 67
- 2026-11-03: 66
- 2026-11-02: 66
- 2026-11-01: 65

## Common questions

### What is the KerfScript MCP server?

KerfScript is an MCP server listed in the public MCP registry as com.mylasertools/kerfscript. Write, check and render parametric laser-cutting designs in KerfScript, as SVG or DXF. This page covers its npm package (@mylasertools/kerfscript-mcp).

### Is the KerfScript MCP server safe to use?

KerfScript scores 67 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the KerfScript MCP server expose?

KerfScript exposes 4 tools: kerfscript_docs, kerfscript_examples, kerfscript_parameters, kerfscript_render. Their descriptions and schemas cost roughly 329 tokens of context every time the server is loaded.

### Is the KerfScript MCP server still maintained?

KerfScript is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the KerfScript MCP server under?

KerfScript declares the AGPL-3.0-only licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@mylasertools/kerfscript-mcp
- Socket report: https://socket.dev/npm/package/@mylasertools/kerfscript-mcp
- Repository: https://github.com/mylasertools/kerfscript
- Website: https://kerfscript.mylasertools.com/docs/mcp/
- Changelog RSS feed: https://verifymcp.io/servers/com-mylasertools-kerfscript/mylasertools-kerfscript-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/com-mylasertools-kerfscript/mylasertools-kerfscript-mcp.json
- HTML version of this page: https://verifymcp.io/servers/com-mylasertools-kerfscript/mylasertools-kerfscript-mcp