Arcjet MCP Server

by arcjet Your server? Claim it

answering

Arcjet is answering right now. Last checked 4 min ago. Last commit 9 Apr 2026.

An MCP server for Arcjet - the runtime security platform that ships with your AI code.

Uptime history 47 days of history

47 days agonow

100.0%

Uptime 24h

92 of 92 checks

—

Tools

hidden behind auth

417 ms

Response time

average over 24h

Stars

last commit 9 Apr 2026

Nothing serious here today

Today is the operative word: we check Arcjet 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

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 4 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mcp --transport http https://api.arcjet.com/mcp

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

{
  "mcpServers": {
    "mcp": {
      "url": "https://api.arcjet.com/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.mcp]
url = "https://api.arcjet.com/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://api.arcjet.com/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "mcp": {
      "url": "https://api.arcjet.com/mcp"
    }
  }
}

This endpoint answered with an authorization challenge. The server is running, and it signs you in through your browser: there is no API key to paste.

Endpoints

URL	Transport	State	Latency	Checked
https://api.arcjet.com/mcp	streamable-http	sign-in	507 ms	4 min ago

Alternatives to Arcjet

same job, measured the same way

LiveCheck AI

by qualityclouds

Secure MCP runtime server for scanning and autofixing code issues

answering

Gread

by nitrorcr

An MCP server that gives your AI access to the source code and docs of all public github repos

5 tools answering

MCP Code Review Server

by goodjobwilliam

Code review as an MCP server — structured reviews with OWASP security scanning.

122 installs/wk local only

Android Security Analyzer

by ako2345

MCP server for static security analysis of Android source code

4 tools answering

NEAT

by neat-technologies

Fused graph of your codebase — static code + runtime OTel — for AI agents, over MCP.

1 757 installs/wk local only

Coverctl

by felixgeelhaar

Go code coverage analysis tool with MCP server for AI-powered coverage workflows

local only

Coverctl

by klarlabs-studio

Go code coverage analysis tool with MCP server for AI-powered coverage workflows

local only

Letmediff MCP

by letmediff

The official Letmediff MCP server helping you review your code with an agent first workflow

56 installs/wk local only

Arcjet — questions

Answers built from our own checks of this server.

Why is there no tool list for Arcjet?

The server answered our handshake with an authorization challenge, so it is running — but it will not describe its tools to an anonymous client. To see them you need to connect with your own credentials. We record it as alive, not as broken: 100.0% of checks in the last 24 hours got a reply.

Is Arcjet working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 417 ms. The bar chart above shows every period we have measured.

How do I connect Arcjet?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address. You sign in through your browser once and the client keeps the session: no key to copy, and it refuses anonymous clients.

How do you sign in to Arcjet?

No API key is involved. Arcjet answers our knock with an OAuth challenge, so you authorise it once in your browser and the client keeps the session. That is also why we see no tool list: it will not describe itself to an anonymous client, and that is the server working as intended, not a fault.

How fast is Arcjet?

It answers our handshake in 417 ms on average, which is faster than 36% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Arcjet open source?

We cannot say either way: 1 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.