GitHub
by github
GitHub’s official server lets AI read and manage code, issues and pull requests in your account. Use GitHub’s hosted version or run it locally with Docker.
Computer or cloud★ 34,245MITUpdated 3 days ago
Install
Prefab
Overview
Description from the maker (original English)
List, create and deploy your Prefab project templates from any MCP agent.
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 checksi0 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: Runs on your computer
- Transport: stdio
- Category: Developer tools
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 0 of 1 passed
- Runs on your computer with your user’s permissions (files, network, apps).
- The registry lists no key to fill in.
You need
- 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 …”.
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"prefab": {
"command": "npx",
"args": [
"-y",
"prefab-mcp"
]
}
}
}Run this in your terminal
claude mcp add prefab -- npx -y prefab-mcpOr copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"prefab": {
"command": "npx",
"args": [
"-y",
"prefab-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": {
"prefab": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"prefab-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.
This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.
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
Runs on your computer; the tool list appears in your AI app after you install it.
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
- ! Caution
Maker matches the repo
The publisher (prefabapp.io) is not the repo owner (davidjaykelly); someone else may have listed it
- … 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 applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
- – Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
- … Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints
Compared with others in Developer toolsi
- More stars than 0% of the other 1388 servers in this category
- Published to the registry more recently than 45% of the other 1388 servers in this category
- Basic checks equal to or better than 23% of the other 1388 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 Prefab safe?
It passed 0 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?
It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).
Is it still maintained?
The GitHub repo last changed –, and the latest version (0.1.1) reached the registry 2 months ago.
Which apps can use it?
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.
What can I use instead?
In the same category: GitHub, Desktop Commander, Cloudflare MCP
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
Desktop Commander
by wonderwhy-er
MCP server for terminal commands, file operations, and process management
Runs on your computer★ 10,225MITUpdated 15 days ago
Install
Cloudflare MCP
by cloudflare
Cloudflare MCP servers
Runs in the cloud★ 4,446Apache-2.0Updated 14 months ago
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.
prefab-mcp
An MCP server for Prefab, so an agent can see your templates and deploy one for you.
"Set up a new client folder for Northwind, autumn campaign, on my Desktop"
What it exposes
| Tool | Does |
|---|---|
list_templates | Every template, what it creates, what it asks for |
describe_template | One template in full: structure, placeholders, actions |
preview_deploy | What a deploy would create, and what values are still missing. Creates nothing |
deploy_template | Creates the folders, filling in the values given |
list_watched_folders | Folders Prefab is watching, and the rules on them |
list_globals | Library-wide placeholders, actions and value presets |
Setting it up
Works with any client that speaks MCP over stdio.
As a bundle - download prefab.mcpb from the releases page and double-click it. Clients that install MCP bundles, Claude Desktop among them, bring their own Node, so there is nothing else to install.
From the command line (Claude Code, and anything with the same idea):
claude mcp add prefab -- npx -y prefab-mcp
In a config file - Cursor, Zed, and most others:
{"mcpServers": { "prefab": { "command": "npx", "args": ["-y", "prefab-mcp"] } } }
Then switch on Let agents and scripts control Prefab in Prefab's Settings ▸ Permissions. It is off by default; reading your templates works without it, creating and deploying does not.
That switch arrives in Prefab 1.1.6. On an earlier version the reading tools work and the rest say so.
Requires macOS, Prefab installed and opened once, and Node 18+ (except for the .mcpb route).
How it works
Prefab is sandboxed and has no network access, so it cannot host anything. This server runs beside it instead: it reads the library straight out of the app group (~/Library/Group Containers/group.VFDG327T66.prefab) and asks the app to deploy through the same prefab:// URL the Finder extension uses. Two consequences worth knowing:
- Prefab has to be running for a deploy. Reading works either way.
- The destination has to be a folder Prefab has been granted. macOS keeps a sandboxed app out of your folders until you point it at one.
preview_deployanddeploy_templateboth check first and say so, rather than leaving a permission dialog on screen that an agent cannot answer. Grant folders in Prefab, under Settings ▸ Permissions.
Nothing here writes to Prefab's library. The app owns those files, and editing them behind its back would be overwritten the next time it saves.
Development
npm test # checks placeholder resolution matches the app's Swift, case for case npm run try '[["list_templates",{}]]' # call a tool the way a client does
src/resolve.js is a deliberate duplicate of RenamePattern.swift. If you change one, change the other - npm test compiles the Swift and compares the two.