MCP server

Preflight

com.allthepossibles/preflight

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

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

Website

At a glance

Type

MCP server

Publisher

allthepossibles.com (verified by the MCP Registry)

Status

Working at last check

Tools

4

Token cost

About 976 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http preflight https://preflight.allthepossibles.com/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.preflight]
url = "https://preflight.allthepossibles.com/mcp"

Gemini CLI

{"mcpServers":{"preflight":{"httpUrl":"https://preflight.allthepossibles.com/mcp"}}}

Cursor

{"mcpServers":{"preflight":{"url":"https://preflight.allthepossibles.com/mcp"}}}

VS Code

{"servers":{"preflight":{"type":"http","url":"https://preflight.allthepossibles.com/mcp"}}}

Antigravity

agy mcp add preflight https://preflight.allthepossibles.com/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"preflight","server_url":"https://preflight.allthepossibles.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"preflight","server_url":"https://preflight.allthepossibles.com/mcp"}

Tools

• check_output ~235 tokens
  Check a structured output you're about to return or act on for degenerate-answer patterns a schema check can't see: invalid JSON, a placeholder value ('TBD', 'N/A', 'unknown') where a real answer should be, an array of byte-identical items (a common symptom of a loop that never advanced), or an expe
• scan_content ~158 tokens
  Check a document or web page for hidden instructions before an agent reads, summarizes, or acts on it: invisible Unicode, obfuscated payloads, and (on Pro) a semantic pass for prompt-injection phrasing aimed at the model instead of the human reader. Pass either a URL to fetch, or raw text you alread
• scan_extension ~333 tokens
  Check a VS Code extension or a Claude Skill before installing or trusting it. For a VS Code extension (which runs with full Node.js access and no permission model to scope): publisher domain-verification status weighed against install count, and known-bad-signature checks on its description. For a C
• scan_mcp_server ~250 tokens
  Check an MCP server for real risk signals before trusting it: unauthenticated transport, capability overreach (filesystem/shell/credential access with no scoping), and known-bad signatures. Pass a live server URL, or a manifest of tool definitions if the server isn't reachable over HTTP. Semantic pr

Browse

• Claude tools
• Website monitoring

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