What is ARBuilder?
ARBuilder is a MCP server by Quantum3-Labs that code generator for Arbitrum: Stylus smart contracts, SDK bridging, full-stack dApps and Orbit chain deployment, backed by RAG over Arbitrum documentation. It is listed under Developer tools and has 24 GitHub stars.
| Type | Mcp server |
|---|---|
| Author | Quantum3-Labs |
| Repository | Quantum3-Labs/ARBuilder |
| Popularity | 24 GitHub stars |
| Category | Developer tools |
| Security | Review before installing (72/100) |
| Rank | #1,210 of 4,418 MCP servers; #299 in Developer tools |
| License | MIT |
| Last commit | 2026-05-08 |
| Runs | Locally and in the cloud |
| Language | Python |
| Platforms | macOS, Windows, Linux |
Is ARBuilder safe to install?
ARBuilder scores 72/100 on the MCPMods security check: Review before installing. Things to review: sends your data to a cloud service; can take actions such as send, write or deploy. It passed 3 of 6 checks.
MCP server results come from listing signals: who publishes it, where your data goes and what it can do. The code itself is not scanned yet.
| Check | Result |
|---|---|
| Community-built server | Note |
| Sends your data to a cloud service | Review |
| No credentials mentioned | Pass |
| Can take actions such as send, write or deploy | Review |
| No code execution | Pass |
| Source on GitHub | Pass |
How do I install ARBuilder?
- Find the launch command. The README says how the server starts (npx, uvx, docker or a remote URL) and which API keys it needs.
https://github.com/Quantum3-Labs/ARBuilder
- Add it to Claude Code. Replace the part after -- with the command from the README. Remote servers use --transport http with a URL.
claude mcp add arbuilder -- <command from README> claude mcp add --transport http arbuilder <server-url>
- Check it connected. This lists your MCP servers and their status.
claude mcp list
Or ask Claude to set it up
Paste this into Claude Code and it installs ARBuilder for you:
Add the "ARBuilder" MCP server from https://github.com/Quantum3-Labs/ARBuilder to Claude Code. Read its README for the launch command and any API keys I need, run claude mcp add, then check that it connects.