MCP MeasureMCP Measure

index observed

crates-package-info

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

Should I use this

Quality & Safety

A
Description quality
100%
Schema completeness
100%
Naming quality
100%
Poisoning risk
80%
Permission match
100%
Protocol compliance
100%

Findings (2)

  • HIGHTool poisoning patterns detected
  • MEDIUMTool description contains URL to non-standard domainin get_crate_info

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~132Tokens (tool definitions)
~486 BTypical response size
Minimal attention impact (0.10% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

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

Remote endpoints

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

What it can do

Tool inventory

Tools (1)

🟢 Read-only🟡 Write🔴 Delete⚪ Unknown
🟢get_crate_info(name)

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.

Input Schema

{
  "type": "object",
  "properties": {
    "name": {
      "type": "string",
      "description": "Crate name, e.g. serde (letters, digits, - and _ only, max 64 chars)"
    }
  },
  "required": [
    "name"
  ]
}

Community

Rate this Server

Evidence

Recent observations

verifiedversion not recorded1 tools