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 4 days ago
Install
ArcSync
Overview
Description from the maker (original English)
Architecture graphs from Terraform, CDK, CloudFormation, Pulumi and ARM, for coding agents
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: Runs on your computer
- Transport: stdio
- Category: Developer tools
- You need to fill in: ARCSYNC_CLIENT_SECRET
Install
Pick the AI app you use, then copy the settings.
Before you install
- Basic checks: 1 of 1 passed
- Runs on your computer with your user’s permissions (files, network, apps).
- You fill in yourself:
ARCSYNC_CLIENT_ID,ARCSYNC_CLIENT_SECRET
Values marked secret are keys to your account. Never share them or paste them into a chat.
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": {
"arcsync": {
"command": "npx",
"args": [
"-y",
"arcsync-mcp"
],
"env": {
"ARCSYNC_CLIENT_ID": "your-value",
"ARCSYNC_CLIENT_SECRET": "your-value"
}
}
}
}Run this in your terminal
claude mcp add arcsync --env ARCSYNC_CLIENT_ID=your-value --env ARCSYNC_CLIENT_SECRET=your-value -- npx -y arcsync-mcpFill in the empty values before running it.
Or copy the settings yourself
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"arcsync": {
"command": "npx",
"args": [
"-y",
"arcsync-mcp"
],
"env": {
"ARCSYNC_CLIENT_ID": "your-value",
"ARCSYNC_CLIENT_SECRET": "your-value"
}
}
}
}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": {
"arcsync": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"arcsync-mcp"
],
"env": {
"ARCSYNC_CLIENT_ID": "your-value",
"ARCSYNC_CLIENT_SECRET": "your-value"
}
}
}
}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.
Values you fill in
ARCSYNC_CLIENT_IDenvMCP credential client ID for CI or shared machines; omit to connect in the browser- MCP credential secret, paired with ARCSYNC_CLIENT_ID
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 7, 2026
- ✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account VanLandinghamLabs, which owns the repo
- … 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 1396 servers in this category
- Published to the registry more recently than 98% of the other 1396 servers in this category
- Basic checks equal to or better than 100% of the other 1396 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 ArcSync 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?
You need to fill in: ARCSYNC_CLIENT_SECRET
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 (0.3.7) reached the registry yesterday.
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 16 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.
arcsync-mcp
An MCP server that gives coding agents (Claude Code, Cursor, GitHub Copilot and other MCP clients) the architecture graph ArcSync parsed from your infrastructure-as-code: Terraform, AWS CDK, CloudFormation, Pulumi, Azure ARM and Serverless Framework.
Tools: list_diagrams, get_diagram (Mermaid or JSON, plus a canvas link), describe_resource, get_delta, list_versions, start_parse, get_parse_status. For diagrams the agent writes itself: validate_diagram (local check), push_diagram (store it and get canvas and Notion embed links), get_diagram_source, list_icons.
Setup
Add to .mcp.json (no credential in it, so it is safe to commit):
{"mcpServers": { "arcsync": { "command": "npx", "args": ["-y", "arcsync-mcp"] } } }
Claude Desktop
Download arcsync-mcp- .mcpb from the latest release and open it: Claude Desktop installs the extension, with no config file to edit. Leave the two credential fields empty to connect in the browser (below), or fill in both with an MCP credential from Settings.
Without Node.js
Each release also ships a standalone binary. On macOS or Linux, Homebrew installs it (on Intel Macs, Homebrew installs the npm package on its own Node.js instead):
brew install vanlandinghamlabs/tap/arcsync-mcpOn Windows, or without Homebrew, download the archive for your platform from Releases and check it with gh attestation verify -R VanLandinghamLabs/arcsync-mcp. Then use "command": "arcsync-mcp" with no args, and arcsync-mcp login / logout in place of the npx forms below.
The server is listed in the MCP Registry as io.github.VanLandinghamLabs/arcsync-mcp.
Connect
The first tool call that reaches ArcSync returns a link to https://arcsync.dev/settings/mcp/connect. validate_diagram and list_icons work without connecting. Open it, sign in, and click Connect: ArcSync mints an MCP credential and hands it to the server over 127.0.0.1, which saves it to ~/.config/arcsync/mcp-credential.json (mode 0600) and uses it from the next call. From a terminal, npx -y arcsync-mcp login does the same; npx -y arcsync-mcp logout deletes the saved file.
For CI or a shared machine, create an MCP credential at https://arcsync.dev/settings instead and pass ARCSYNC_CLIENT_ID and ARCSYNC_CLIENT_SECRET in the server's environment; they take precedence over a saved credential.
Two agent skills ship in skills/: arcsync-mcp tells an agent when to call each graph tool, and arcsync-diagrams teaches it to write, validate and push its own diagrams. Install both for Claude Code, Codex, Cursor and the other agents the skills CLI supports:
npx skills add VanLandinghamLabs/arcsync-mcpThe skills do not install the server; add it as above.
Full guide: https://arcsync.dev/docs/mcp
Source and development
This repository is mirrored from the ArcSync monorepo on each release, together with the ArcSync core modules the server uses (vendor/core/). Releases are published to npm from here with provenance, so npm view arcsync-mcp --json links each version to the commit and workflow run that built it. Issues and pull requests are welcome; accepted changes are ported to the monorepo and ship in the next release.
npm cinpm test npm run build # dist/index.js, one self-contained file npm run eval:diagrams # arcsync-diagrams skill evals; after build, costs model calls
License
MIT