Crates Package Info MCP Server

by fly-looper-products Your server? Claim it

answering

Crates Package Info is answering right now. Last checked 2 min ago. It exposes 1 tools.

Read-only: public crates.io metadata for a Rust crate. Free, no API key.

Uptime history 5 days of history

5 days agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

1302 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Crates Package Info 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 2 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add crates-package-info --transport http https://looper-products.fly.dev/mcp-crates/

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

https://looper-products.fly.dev/mcp-crates/

~/.codex/config.toml

[mcp_servers.crates-package-info]
url = "https://looper-products.fly.dev/mcp-crates/"

.cursor/mcp.json

{
  "mcpServers": {
    "crates-package-info": {
      "url": "https://looper-products.fly.dev/mcp-crates/"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "crates-package-info": {
      "type": "http",
      "url": "https://looper-products.fly.dev/mcp-crates/"
    }
  }
}

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.

crate

get_crate_info

Read-only: fetch public metadata for a Rust crate from the free, unauthenticated crates.io API (https://crates.io/api/v1/crates/<name>). Returns name, latest version, description, license, repository, downloads, recent_downloads, max_version, updated_at, documentation and homepage. No login or API key.

Endpoints

URL	Transport	State	Latency	Checked
https://looper-products.fly.dev/mcp-crates/	streamable-http	answering	13473 ms	2 min ago

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Crates Package Info — questions

Answers built from our own checks of this server.

What can Crates Package Info do?

It exposes 1 tools, read directly from the server on our last check. Among them: get_crate_info. 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 Crates Package Info working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 92 of 92 checks got a reply (100.0%), average response time 1302 ms. The bar chart above shows every period we have measured.

How do I connect Crates Package Info?

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 Crates Package Info need an API key?

No. Crates Package Info 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 Crates Package Info?

It answers our handshake in 1302 ms on average, which is faster than 2% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.