W0 MCP Server

by modern-ai-inc Your server? Claim it

answering

W0 MCP Server is answering right now. Last checked 12 min ago. It exposes 1 tools. Last commit 26 Aug 2026.

Look up a brand's AI Recommendation Rate: how often it's the #1 AI pick.

Uptime history 6 days of history

6 days agonow

100.0%

Uptime 24h

91 of 91 checks

Tools

read from the server

72 ms

Response time

average over 24h

Stars

last commit 26 Aug 2026

Nothing serious here today

Today is the operative word: we check W0 MCP Server every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 12 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add w0-mcp-server --transport http https://w0-mcp-server.modernai.workers.dev

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "w0-mcp-server": {
      "url": "https://w0-mcp-server.modernai.workers.dev"
    }
  }
}

~/.codex/config.toml

[mcp_servers.w0-mcp-server]
url = "https://w0-mcp-server.modernai.workers.dev"

.cursor/mcp.json

{
  "mcpServers": {
    "w0-mcp-server": {
      "url": "https://w0-mcp-server.modernai.workers.dev"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "w0-mcp-server": {
      "url": "https://w0-mcp-server.modernai.workers.dev"
    }
  }
}

Available tools 1

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

lookup

lookup_brand_recommendation_rate

Look up a brand's AI Recommendation Rate: the percentage of buyer-intent questions where the brand is the #1 AI pick (not just mentioned), plus its Recommendation Inclusion Rate (appears anywhere in the answer). Free, single-brand lookup only -- rate-limited per Modern AI's published anti-scrape policy.

Endpoints

URL	Transport	State	Latency	Checked
https://w0-mcp-server.modernai.workers.dev	streamable-http	answering	63 ms	12 min ago

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W0 MCP Server — questions

Answers built from our own checks of this server.

What can W0 MCP Server do?

It exposes 1 tools, read directly from the server on our last check. Among them: lookup_brand_recommendation_rate. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is W0 MCP Server working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 72 ms. The bar chart above shows every period we have measured.

How do I connect W0 MCP Server?

Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does W0 MCP Server need an API key?

No. W0 MCP Server completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 1 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is W0 MCP Server?

It answers our handshake in 72 ms on average, which is faster than 96% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is W0 MCP Server open source?

Yes — written in JavaScript and 0 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.