Preflight for Claude.ai

com.allthepossibles/preflight

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

client:Claude.ai transport:streamable-http tools:4

Install Preflight in Claude.ai

Settings → Connectors → Add custom connector

https://preflight.allthepossibles.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

scan_mcp_server
scan_content
scan_extension
check_output

Preflight in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Preflight MCP server