Index / MCP servers / Desvela Preflight — free

Desvela Preflight — free MCP server

Connect Desvela Preflight — free and your agent gets 4 tools, among them crawler_block_test, preflight, search. It answers at https://registry.desvela.dev/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 10 of 10 times since 5 September 2026; the last check, on 18 October 2026, succeeded.

Status

Answering

Tools

Reliability

10 of 10 checks

Response time

72 ms

Transport

streamable HTTP

Last checked

18 October 2026

A free MCP server over the Desvela ARD registry, no token required. preflight(domain) answers what an agent should know before crawling this site: does this website allow AI crawlers, and does the domain publish an ai-catalog, llms.txt or agents.md, alongside its robots.txt AI directives. Answered from a <7d index or a live check.

Description as the publisher wrote it.

The 4 tools Desvela Preflight — free offers

Tool	What it does
`crawler_block_test`	What the domain's CDN really does, as opposed to what its robots.txt says. Sends each AI crawler's real user-agent at the homepage and compares the response against a browser: a site can allow GPTBot in robots.txt and still have its CDN ans Inputs: domain
`preflight`	What a domain publishes for AI agents before you touch it: ai-catalog.json (ARD), llms.txt, agents.md, and its robots.txt directives for AI bots (GPTBot, ClaudeBot, Google-Extended…). Served from the Desvela ARD index when fresh (<7 days), Inputs: domain
`search`	Natural-language search over what Desvela has indexed: agents, MCP servers, registries — the same index as POST /search. Returns catalog entries per the ARD spec. When nothing matches, returns referrals: other ARD-conformant registries you Inputs: text
`watch`	Subscribe to a domain: get a signed webhook (X-Desvela-Signature, HMAC-SHA256) when what it publishes for AI agents changes — ai-catalog.json entries added/changed/gone, llms.txt or agents.md edited or removed, robots.txt AI-bot directives Inputs: domain, webhook_url

Add Desvela Preflight — free to your AI client

Every block below points at https://registry.desvela.dev/mcp. Pick your client and copy.

Claude Code: one command in your terminal

claude mcp add --transport http desvela-preflight-free https://registry.desvela.dev/mcp

Claude Desktop: claude_desktop_config.json

{
  "mcpServers": {
    "desvela-preflight-free": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://registry.desvela.dev/mcp"]
    }
  }
}

Cursor: ~/.cursor/mcp.json, or .cursor/mcp.json in a project

{
  "mcpServers": {
    "desvela-preflight-free": {
      "url": "https://registry.desvela.dev/mcp"
    }
  }
}

VS Code and GitHub Copilot: .vscode/mcp.json

{
  "servers": {
    "desvela-preflight-free": {
      "type": "http",
      "url": "https://registry.desvela.dev/mcp"
    }
  }
}

Zed: Zed settings.json

{
  "context_servers": {
    "desvela-preflight-free": {
      "url": "https://registry.desvela.dev/mcp"
    }
  }
}

Windsurf: ~/.codeium/mcp_config.json

{
  "mcpServers": {
    "desvela-preflight-free": {
      "serverUrl": "https://registry.desvela.dev/mcp"
    }
  }
}

JetBrains AI Assistant: Settings, Tools, AI Assistant, MCP, New MCP Server, as JSON

{
  "mcpServers": {
    "desvela-preflight-free": {
      "url": "https://registry.desvela.dev/mcp"
    }
  }
}

Continue: .continue/mcpServers/neuronto.yaml

name: Desvela Preflight — free
version: 0.0.1
schema: v1
mcpServers:
  - name: Desvela Preflight — free
    type: streamable-http
    url: https://registry.desvela.dev/mcp

Gemini CLI: ~/.gemini/settings.json

{
  "mcpServers": {
    "desvela-preflight-free": {
      "httpUrl": "https://registry.desvela.dev/mcp"
    }
  }
}

Codex CLI: MCP server config

{
  "mcpServers": {
    "desvela-preflight-free": {
      "type": "http",
      "url": "https://registry.desvela.dev/mcp"
    }
  }
}

Warp: MCP servers, + Add, paste JSON

{
  "mcpServers": {
    "desvela-preflight-free": {
      "url": "https://registry.desvela.dev/mcp"
    }
  }
}

Goose: a one-click extension link

goose://extension?url=https%3A%2F%2Fregistry.desvela.dev%2Fmcp&type=streamable_http&id=desvela-preflight-free&name=Desvela%20Preflight%20%E2%80%94%20free

Is Desvela Preflight — free up right now?

It answered our last check on 18 October 2026 in 72 ms. Over 10 checks since 5 September 2026 it answered 10. Status here comes from Neuronto's own probes, not from the publisher.

MCP servers similar to Desvela Preflight — free

Desvela Registry Watch4 tools Desvela Preflight — free4 tools Desvela Registry Watch4 tools Desvela AI Crawler Block Test — free4 tools Desvela ARD Registry — free preflight(domain)4 tools Agent Preflight7 tools

Questions about Desvela Preflight — free

How many tools does Desvela Preflight — free have?

4, as returned by the server's own tools/list on 31 August 2026: crawler_block_test, preflight, search, watch.

Is Desvela Preflight — free down?

It answered our last check on 18 October 2026 in 72 ms. Over 10 checks since 5 September 2026 it answered 10.

How do I add Desvela Preflight — free to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://registry.desvela.dev/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does Desvela Preflight — free need an API key?

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.

Where this comes from

Publisher: desvela.ai. Endpoint host: registry.desvela.dev. ARD identifier: urn:air:desvela.ai:registry:preflight. First indexed 31 August 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.

Is this your server? Get a message the day it stops answering or its tools change: monitoring, 14 days free. Or claim the domain to manage how it is listed.