MCP Surface Lint MCP Server

by dleibner Your server? Claim it

answering

MCP Surface Lint is answering right now. Last checked 5 min ago. It exposes 1 tools. Last commit 26 Oct 2026.

Statically audits MCP tool surfaces for token cost, schema quality, and design issues.

Uptime history 83 days of history · worst day 14%

83 days agonow

20.9%

Uptime 24h

19 of 91 checks

Tools

read from the server

378 ms

Response time

average over 24h

Stars

last commit 26 Oct 2026

What changed 2

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 21 September 2026. No other catalogue keeps this.

21 Sep a tool changed the parameters it asks for check_mcp_server

21 Sep a tool changed version

What the code does

We read the source, 6 d ago · tools taken from the live server · rules 995398eba69f

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Builds a file path from a variable apps/web/lib/directory/data.ts:26

  return parse(readFileSync(path.join(DATA_ROOT, relative), "utf8"));

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 5 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add mcp-surface-lint --transport http https://mcplint-web.vercel.app/api/mcp

Settings → Connectors → Add custom connector, then paste this address

https://mcplint-web.vercel.app/api/mcp

~/.codex/config.toml

[mcp_servers.mcp-surface-lint]
url = "https://mcplint-web.vercel.app/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "mcp-surface-lint": {
      "url": "https://mcplint-web.vercel.app/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "mcp-surface-lint": {
      "type": "http",
      "url": "https://mcplint-web.vercel.app/api/mcp"
    }
  }
}

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.

mcp

check_mcp_server

Statically audit an MCP tool surface from a public HTTPS URL or tools/list snapshot. Returns deterministic scores and findings without invoking any target tool or making LLM calls. When the user asks to check another installed MCP server, read that server's complete tool definitions from client context and pass them as snapshot (MCP `name` or Cursor-style `tool` both work; do not use file paths or $ref). If those definitions are unavailable, ask the user for its public endpoint or tools/list JSON instead of inventing an audit.

Endpoints

URL	Transport	State	Latency	Checked
https://mcplint-web.vercel.app/api/mcp	streamable-http	answering	243 ms	5 min ago

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MCP Surface Lint — questions

Answers built from our own checks of this server.

What can MCP Surface Lint do?

It exposes 1 tools, read directly from the server on our last check. Among them: check_mcp_server. 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 MCP Surface Lint working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 19 of 91 checks got a reply (20.9%), average response time 378 ms. The bar chart above shows every period we have measured.

How do I connect MCP Surface Lint?

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

Does MCP Surface Lint need an API key?

No. MCP Surface Lint 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 MCP Surface Lint?

It answers our handshake in 378 ms on average, which is faster than 35% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is MCP Surface Lint open source?

We cannot say either way: written in TypeScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.