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Preflight

Official registry Security

Scans an MCP server for security gaps before your agent connects. Free tier, no signup.

Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http preflight 'https://preflight.allthepossibles.com/mcp'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "preflight": {
            "type": "http",
            "url": "https://preflight.allthepossibles.com/mcp"
        }
    }
}

Frequently asked questions

What is Preflight?

Scans an MCP server for security gaps before your agent connects. Free tier, no signup.

How do I install Preflight?

It runs as a remote server. In Claude Code: claude mcp add --transport http preflight 'https://preflight.allthepossibles.com/mcp'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Preflight need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Who maintains Preflight?

It is published by com.allthepossibles. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.