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90
MCP live MCP 2025-11-25 streamable-http

PREFLIGHT — URL Routing for AI Agents

io.github.gsterlingpress/preflight

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

Watch this dependency Share evidence report
Uptime
100.0%
5 direct probes · 30d
Response
977ms
last probe
Tools
2
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://preflight-api-production-01a2.up.railway.app/mcp
Score: 90/100
Handshake verified by our own probe.
pass Answers the MCP handshake 50/50
The handshake and the list calls succeeded on the primary URL.
pass Lists tools, resources or prompts 30/30
2 tools, 0 resources, 0 prompts returned.
partial 3 or more catalogue items 0/10
2 items in total; 3 or more earns these points.
How to earn +10 points
Expose at least three tools, resources or prompts
Split a catch-all tool into focused ones, or publish your docs and templates as resources and prompts.
Docs →
pass Describes itself 10/10
90 characters; more than 30 earns these points.

Tools · 2

preflight_check

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_ENDPOIN…

preflight_feedback

After following a PREFLIGHT recommendation, report whether the chosen route worked so PREFLIGHT can improve future recommendations.

How to use

Claude Desktop or claude.ai: add a custom connector (Customize → Connectors; on Team and Enterprise plans an owner adds it under Organization settings → Connectors) with this server URL: https://preflight-api-production-01a2.up.railway.app/mcp

Cursor or Cline: add to your MCP config:

{
  "mcpServers": {
    "preflight_\u2014_url_routing_for_ai_agents": {
      "url": "https://preflight-api-production-01a2.up.railway.app/mcp",
      "transport": "streamable-http"
    }
  }
}