PREFLIGHT — URL Routing for AI Agents is a remote MCP server that gives an AI agent 2 tools, among them preflight_check, preflight_feedback. It answers at https://preflight-api-production-01a2.up.railway.app/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 6 of 6 times since 11 September 2026; the last check, on 19 October 2026, succeeded.
Choose HTTP, browser, machine endpoint, or avoid before an agent visits an unfamiliar URL.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
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 hi Inputs: url |
preflight_feedback | After following a PREFLIGHT recommendation, report whether the chosen route worked so PREFLIGHT can improve future recommendations. Inputs: url, route, outcome, latencyMs |
Every block below points at https://preflight-api-production-01a2.up.railway.app/mcp. Pick your client and copy.
claude mcp add --transport http preflight-url-routing-for-ai-age https://preflight-api-production-01a2.up.railway.app/mcp
{
"mcpServers": {
"preflight-url-routing-for-ai-age": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://preflight-api-production-01a2.up.railway.app/mcp"]
}
}
}{
"mcpServers": {
"preflight-url-routing-for-ai-age": {
"url": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}{
"servers": {
"preflight-url-routing-for-ai-age": {
"type": "http",
"url": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}{
"context_servers": {
"preflight-url-routing-for-ai-age": {
"url": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}{
"mcpServers": {
"preflight-url-routing-for-ai-age": {
"serverUrl": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}{
"mcpServers": {
"preflight-url-routing-for-ai-age": {
"url": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}name: PREFLIGHT — URL Routing for AI Agents
version: 0.0.1
schema: v1
mcpServers:
- name: PREFLIGHT — URL Routing for AI Agents
type: streamable-http
url: https://preflight-api-production-01a2.up.railway.app/mcp{
"mcpServers": {
"preflight-url-routing-for-ai-age": {
"httpUrl": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}{
"mcpServers": {
"preflight-url-routing-for-ai-age": {
"type": "http",
"url": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}{
"mcpServers": {
"preflight-url-routing-for-ai-age": {
"url": "https://preflight-api-production-01a2.up.railway.app/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fpreflight-api-production-01a2.up.railway.app%2Fmcp&type=streamable_http&id=preflight-url-routing-for-ai-age&name=PREFLIGHT%20%E2%80%94%20URL%20Routing%20for%20AI%20Agents
It answered our last check on 19 October 2026 in 271 ms. Over 6 checks since 11 September 2026 it answered 6. Status here comes from Neuronto's own probes, not from the publisher.
2, as returned by the server's own tools/list on 12 September 2026: preflight_check, preflight_feedback.
It answered our last check on 19 October 2026 in 271 ms. Over 6 checks since 11 September 2026 it answered 6.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://preflight-api-production-01a2.up.railway.app/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.gsterlingpress. Endpoint host: preflight-api-production-01a2.up.railway.app. ARD identifier: urn:air:io.github.gsterlingpress:mcp:preflight.
First indexed 10 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.