Community · Official remote MCP server

The Preflight MCP server,
connected in one click.

Scans an MCP server for security gaps before your agent connects. Free tier, no signup. Connect the official Preflight MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.

Connect Preflight free How it works

Free to start · No credit card · No hosting needed

Use this server

Add Preflight to your AI in one minute

Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.

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

Run in your terminal, then restart Claude Code.

Preflight · https://preflight.allthepossibles.com/mcp

What you can do

What your AI can do with Preflight

Real prompts you can type the moment it's connected — no setup, no docs to read.

“Use “scan_mcp_server”: Check an MCP server for real risk signals before trusting it: unauthenticated transport, capability overreach (filesystem/shell/credential a.”

“Use “scan_content”: Check a document or web page for hidden instructions before an agent reads, summarizes, or acts on it: invisible Unicode, obfuscated payload.”

“Use “scan_extension”: 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 a.”

“Use “check_output”: 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 placehol.”

Security check

How secure is the Preflight MCP server?

Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Preflight holds up.

✓ Verified directory serverPreflight · allthepossibles.com

Official endpoint

Operated by Preflight (allthepossibles.com) at its documented MCP endpoint — not a third-party mirror or community re-host.

No sign-in needed

This server only exposes public data — no account and no credentials are involved when you connect.

Scanned before it goes live

gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.

Watched for drift

If Preflight adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.

Run the free scanner on Preflight's server →

How it works

Connected in three steps

Connect your gate

Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.

Pick Preflight

Choose Preflight in the gate directory. No sign-in needed.

Use it anywhere

Preflight's tools are live in every AI client you've connected — with rules and logging built in.

Connect Preflight free

Free to start · No credit card · No hosting needed

Straight from the server

The actual tools Preflight exposes

Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.

scan_mcp_server — Check an MCP server for real risk signals before trusting it: unauthenticated transport, capability overreach (filesystem/shell/credential a

scan_content — Check a document or web page for hidden instructions before an agent reads, summarizes, or acts on it: invisible Unicode, obfuscated payload

scan_extension — 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 a

check_output — 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 placehol

Author

Who runs the Preflight MCP server?

allthepossibles.com

Homepage More servers from allthepossibles.com →

Own this server? Claim the listing →

Server facts

The Preflight MCP server at a glance

Endpointhttps://preflight.allthepossibles.com/mcp

Operated byPreflight (allthepossibles.com)

CategoryCommunity

Sign-inNone — public data only

Available in gateYes — one-click connect

Works withClaude, ChatGPT, Cursor & any MCP client

FAQ

Questions, answered

Is there an official Preflight MCP server?

Yes — Preflight operates its own remote MCP server at preflight.allthepossibles.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.

How do I connect Preflight to Claude or ChatGPT?

Add gate's gateway URL to your AI client once, then pick Preflight in the directory. No account or sign-in is needed. From then on, Preflight's tools are available in every client you've connected to gate.

Do I need to host anything?

No. Preflight runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.

Is the Preflight MCP server safe to connect?

It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.