ArcSync MCP Server

by vanlandinghamlabs Your server? Claim it

local only

ArcSync runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 2 Nov 2026.

Architecture graphs from Terraform, CDK, CloudFormation, Pulumi and ARM, for coding agents

—

Installs / week

npm · arcsync-mcp

Stars

0 open issues

2 Nov 2026

Last commit

7 releases in 90 days

MIT

License

TypeScript

Nothing serious here today

Today is the operative word: we check ArcSync every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add arcsync-mcp -- npx -y arcsync-mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "arcsync-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "arcsync-mcp"
      ]
    }
  }
}

~/.codex/config.toml

[mcp_servers.arcsync-mcp]
command = "npx"
args = ["-y", "arcsync-mcp"]

.cursor/mcp.json

{
  "mcpServers": {
    "arcsync-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "arcsync-mcp"
      ]
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "arcsync-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "arcsync-mcp"
      ]
    }
  }
}

Optional settings from the registry entry, left out of the block above: ARCSYNC_CLIENT_ID (MCP credential client ID for CI or shared machines; omit to connect in the browser), ARCSYNC_CLIENT_SECRET (MCP credential secret, paired with ARCSYNC_CLIENT_ID).

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ArcSync — questions

Answers built from our own checks of this server.

Why is there no uptime for ArcSync?

ArcSync runs on your own machine over stdio — there is no network address to reach, so uptime cannot be measured for it by anyone. What can be measured is adoption: the npm package arcsync-mcp.

How do I connect ArcSync?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It runs locally, so the command pulls arcsync-mcp straight from npm; nothing to host, nothing to sign up for.

Is ArcSync open source?

Yes — it is published under the MIT licence, written in TypeScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.