LocalFree server, account needed

Promptrejectormcp MCP server

revsmoke/promptrejectormcp

Security gateway for AI agents: detects prompt injections, jailbreaks, and common vulnerabilities.

2 GitHub stars3 forks337 npm downloads / month
Source code

Install Promptrejectormcp in Claude Code

Claude Code
claude mcp add promptrejectormcp -e YOUR_API_KEY=... -- npx -y prompt-rejector
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "promptrejectormcp": {
      "command": "npx",
      "args": [
        "-y",
        "prompt-rejector"
      ],
      "env": {
        "YOUR_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Promptrejectormcp MCP server do?

Security gateway for AI agents: detects prompt injections, jailbreaks, and common vulnerabilities.

Is the Promptrejectormcp MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Promptrejectormcp run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Promptrejectormcp to Claude Code?

Run: claude mcp add promptrejectormcp -e YOUR_API_KEY=... -- npx -y prompt-rejector

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