MCP server

PREFLIGHT — URL Routing for AI Agents

io.github.GSterlingPress/preflight

Checked 25 Oct 2026, 20:29 UTC · Connected to it and listed its tools

Choose HTTP, browser, machine endpoint, or avoid before an agent visits an unfamiliar URL.

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

2

Token cost

About 326 tokens per request

Sets up in

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

Last checked

25 Oct 2026, 20:29 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-api-production-01a2.up.railway.app/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.preflight]
url = "https://preflight-api-production-01a2.up.railway.app/mcp"

Gemini CLI

{"mcpServers":{"preflight":{"httpUrl":"https://preflight-api-production-01a2.up.railway.app/mcp"}}}

Cursor

{"mcpServers":{"preflight":{"url":"https://preflight-api-production-01a2.up.railway.app/mcp"}}}

VS Code

{"servers":{"preflight":{"type":"http","url":"https://preflight-api-production-01a2.up.railway.app/mcp"}}}

Antigravity

agy mcp add preflight https://preflight-api-production-01a2.up.railway.app/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-api-production-01a2.up.railway.app/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"preflight","server_url":"https://preflight-api-production-01a2.up.railway.app/mcp"}

Tools

• preflight_check ~176 tokens
  Before fetching, crawling, scraping, opening, or browser-rendering an unfamiliar http/https URL, call this with the ACTUAL destination URL. Returns the best first route: HTTP, BROWSER, MACHINE_ENDPOINT, or AVOID, plus access/JS/size/cost hints. Do not substitute example.com when a real task URL is a
• preflight_feedback ~150 tokens
  After following a PREFLIGHT recommendation, report whether the chosen route worked so PREFLIGHT can improve future recommendations.

Browse

• GitHub tools
• Web scraping
• Website monitoring
• GitHub and code hosting

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