Arcwall Security MCP Server

@rom-baro

Basic information

About Arcwall Security MCP Server

Security scanning for Claude Code, Cursor, Windsurf. Detects secrets, scans MCP configs, generates threat models.

#security #ai-security#threat-model#mcp #skills

Arcwall Security MCP Server config

Add this server to your MCP-compatible client using the configuration below.

{
  "mcpServers": {
    "arcwall": {
      "command": "npx",
      "args": [
        "@arcwall/mcp-server"
      ],
      "env": {
        "ARCWALL_API_KEY": "your-key-here"
      }
    }
  }
}

Arcwall Security MCP Server tools

Scan workspace for hardcoded API keys, passwords, private keys, tokens, and credentials. Run before committing or deploying.

Scan MCP server configurations for prompt injection, excessive permissions, and unverified server origins. Scans .cursor/mcp.json, .vscode/mcp.json, .claude/mcp.json and other MCP config files.

Scan agent instruction files for security vulnerabilities. Covers CLAUDE.md, .cursorrules, .windsurfrules, AGENTS.md and other formats. Detects prompt injection, sensitive data, and missing guardrails.

Generate a STRIDE threat model for the current codebase. Identifies trust boundary gaps, authorization issues, data flow exposures, and architectural risks. Results saved to Arcwall dashboard.

Test a system prompt for injection vulnerabilities, jailbreak susceptibility, missing guardrails, and excessive agency. Include test messages to check multi-turn vulnerabilities.

Security check before committing. Scans staged files for secrets and checks MCP configs. Returns CLEAR TO COMMIT or BLOCKED with issues to fix.

Check dependencies for known CVEs. Scans package.json for vulnerable packages with safe version recommendations.

Overview

What is Arcwall Security?

Arcwall Security is an MCP server that provides security scanning for Claude Code, Cursor, Windsurf, and any MCP-compatible AI coding tool. It helps developers find hardcoded secrets, MCP configuration vulnerabilities, insecure agent instructions, and other common security issues directly from the AI assistant.

How to use Arcwall Security?

Get a free API key at https://arcwall.io, then add the server configuration to your AI tool’s MCP config file (e.g., ~/.claude/mcp.json for Claude Code) with the command npx @arcwall/mcp-server and the ARCWALL_API_KEY environment variable. Restart the AI tool to enable scanning commands.

Key features of Arcwall Security

Scan for hardcoded credentials and secrets
Detect MCP config vulnerabilities
Analyze CLAUDE.md and .cursorrules security
Generate STRIDE threat models
Test prompts for injection vulnerabilities
Pre-commit security checks
Scan dependencies for known CVEs

Use cases of Arcwall Security

Scan a repository for secrets before sharing code
Check MCP configuration files for misconfigurations
Analyze AI agent instructions for unsafe patterns
Run a pre-commit security check to prevent vulnerabilities
Identify outdated or vulnerable dependencies

Frequently asked questions

How do I get an API key?

Visit https://arcwall.io and sign up for a free API key.

What AI tools does Arcwall support?

It works with Claude Code, Cursor, Windsurf, and any MCP-compatible AI coding tool.

What scanning tools are available?

The server provides seven tools: `arcwall_scan_secrets`, `arcwall_scan_mcp`, `arcwall_scan_agent_instructions`, `arcwall_threat_model`, `arcwall_check_prompt`, `arcwall_pre_commit`, and `arcwall_scan_dependencies`.

How do I configure Arcwall in Cursor or Windsurf?

For Cursor, use the same JSON config as Claude Code in `.cursor/mcp.json`. For Windsurf, add the server via the MCP settings panel.

Is there a dashboard or documentation?

Yes. Dashboard: https://arcwall.io/app.html. Docs: https://arcwall.io/docs.html.

Comments

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