PREFLIGHT — URL Routing for AI Agents

io.github.GSterlingPress/preflightVersion 0.7.6

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

Status

Responds396 msNov 14, 2026, 14:37 UTCAnswered our handshake without sign-in.

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Data from the official MCP Registry, checked by run.zero. How we check

Streamable HTTP

https://preflight-api-production-01a2.up.railway.app/mcpResponds396 msNov 14, 2026, 14:37 UTC

No sign-in

claude mcp add --transport http preflight https://preflight-api-production-01a2.up.railway.app/mcp

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Settings > Connectors > Add custom connector
Name: preflight
Remote MCP server URL: https://preflight-api-production-01a2.up.railway.app/mcp

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

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

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2 tools

Tools of PREFLIGHT — URL Routing for AI Agents
	Description		Read-only	Idempotent	Open world
`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_ENDPOINT, or AVOID, plus access/JS/size/cost hints. Do not substitute example.com when a real task URL is available.	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 available.	No	Yes	Yes	Yes
`preflight_feedback`After following a PREFLIGHT recommendation, report whether the chosen route worked so PREFLIGHT can improve future recommendations.	After following a PREFLIGHT recommendation, report whether the chosen route worked so PREFLIGHT can improve future recommendations.	No	No	No	No

Registry status: Active
Published: Sep 13, 2026
Updated: Sep 13, 2026
Website: https://github.com/GSterlingPress/preflight-api⁠ (opens in a new tab)
Repository: https://github.com/GSterlingPress/preflight-api⁠ (opens in a new tab)
Categories (suggested): Browser automationSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared