Spec Driven Development
by formulahendry
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Runs on your computer★ 440MITUpdated 14 months ago
Install
KerfScript
Overview
Description from the maker (original English)
Write, check and render parametric laser-cutting designs in KerfScript, as SVG or DXF.
PopNx MCP’s three pillars
These three are never merged into one score: opinions, measurements and popularity are different things.
- User voiceiNo reviews yetReviews open together with accounts in a later step
- Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
- UsageiNot measured yet★ –
What you can do with it
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
- Connection: Computer or cloud
- Transport: stdio, Streamable HTTP
- Category: Other
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on the maker’s server: what you ask it goes through their server.
- The registry lists no key to fill in.
You need
- Runs in the cloudNothing to install; it connects over the internet
- npmNode.js installed (for the npx command)
Which app do you use?
Pick your app above. We remember it, so next time the button says “Install in …”.
Works in Claude on the web, desktop and mobile:
- Open Settings → Connectors
- Press Add custom connector
- Paste the address below and press Add
- If it asks you to sign in, sign in with the maker
https://mcp.mylasertools.com/mcpOr run it on your computer
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"kerfscript": {
"command": "npx",
"args": [
"-y",
"@mylasertools/kerfscript-mcp"
]
}
}
}Run this in your terminal
claude mcp add --transport http kerfscript https://mcp.mylasertools.com/mcpOr run it on your computer
claude mcp add kerfscript -- npx -y @mylasertools/kerfscript-mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"kerfscript": {
"url": "https://mcp.mylasertools.com/mcp"
}
}
}Or run it on your computer
Or copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"kerfscript": {
"command": "npx",
"args": [
"-y",
"@mylasertools/kerfscript-mcp"
]
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"kerfscript": {
"type": "http",
"url": "https://mcp.mylasertools.com/mcp"
}
}
}Or run it on your computer
Or copy the settings yourself
Paste into .vscode/mcp.json in your project
{
"servers": {
"kerfscript": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mylasertools/kerfscript-mcp"
]
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
ChatGPT connects only to servers on the internet:
- Open ChatGPT on the web → Settings → Connectors (Apps)
- Press Create or Add (some plans need Developer mode under Advanced first)
- Paste the address below, give it a name and save
- If it asks you to sign in, sign in with the maker
https://mcp.mylasertools.com/mcpMenu names can differ slightly by plan and over time.
Your choice stays on this device in a cookie; no account needed.
These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
What it can do
We have not read this server’s tool list yet; we check endpoints in rotation.
Basic checksi
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified against the domain mylasertools.com (the registry checks domain ownership)
- … Not checked yet
Still maintained
We have not read this repo from GitHub yet
- … Not checked yet
Has a licence
We have not read this repo from GitHub yet
- … Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
- … Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
- … Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint
Compared with others in Otheri
- More stars than 0% of the other 32410 servers in this category
- Published to the registry more recently than 86% of the other 32410 servers in this category
- Basic checks equal to or better than 100% of the other 32410 servers in this category
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
Common questions
Is KerfScript safe?
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
What keys or codes does it need?
The registry does not list a required key, though some servers ask you to sign in on first use.
Does it run on my computer or in the cloud?
Either way works: install it on your computer or connect to the cloud version.
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.1.1) reached the registry 5 days ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
What can I use instead?
In the same category: Spec Driven Development, Remote Desktop Commander, debuff
Alternatives
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
Remote Desktop Commander
by desktop-commander
Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.
Runs in the cloud★ 211Updated yesterday
Install
debuff
by debuffjp
Let coding agents play, test and tune your 2D web game: live state, explained errors, replays, fuzz.
Runs on your computerUpdated today
Install
README from the maker
Open the README
Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.
KerfScript MCP
An MCP server that lets AI assistants write and check KerfScript laser-cutting designs. The assistant can read the KerfScript docs and examples, find a design's settings and render it to SVG or DXF, so it can test its code before giving it to you.
Connect
The hosted server needs no account or key:
https://mcp.mylasertools.com/mcpClaude Code
claude mcp add --transport http kerfscript https://mcp.mylasertools.com/mcpClaude (desktop and web): Settings → Connectors → Add custom connector, and enter the address above.
Cursor: add it to .cursor/mcp.json:
{"mcpServers": { "kerfscript": { "url": "https://mcp.mylasertools.com/mcp" } } }
VS Code: add it to .vscode/mcp.json:
{"servers": { "kerfscript": { "type": "http", "url": "https://mcp.mylasertools.com/mcp" } } }
Run it locally
With Node.js 20 or newer, the same server runs on your computer and designs never leave it:
{"mcpServers": { "kerfscript": { "command": "npx", "args": ["-y", "@mylasertools/kerfscript-mcp"] } } }
In Claude Code:
claude mcp add kerfscript -- npx -y @mylasertools/kerfscript-mcpTools
| Tool | What it does |
|---|---|
kerfscript_docs | Reads the guides and the language reference |
kerfscript_examples | Finds examples by title or tag and returns their source |
kerfscript_parameters | Lists a design's settings with their ranges and choices |
kerfscript_render | Renders a design to SVG or DXF, with its parts, sizes, layers and any warnings |
Sizes are in millimetres. Text uses the bundled Atkinson Hyperlegible font.
Limits
A design may be up to 64,000 characters, with up to 20 libraries of its own passed alongside it. It cannot read files or fetch anything from the network. Each render stops at 100,000 steps, 100 parts and 10 sheets. For bigger designs or other fonts, use the KerfScript package or its command line.
The hosted server allows each client about 60 requests a minute and 1,000 a day. It does not store or log the designs you send.
A render that succeeds does not mean the parts fit. Cut a test piece in your material before cutting a new design.
More
Licensed under the GNU AGPL 3.0, or the free commercial licence for closed-source use.