mcpbeat

Ferritin — Rust documentation MCP Server

rs.ferritin/rustdoc
answering

Ferritin — Rust documentation is answering right now. Last checked 5 min ago. It exposes 2 tools. Last commit 3 Aug 2026.

Search and read Rust documentation for the standard library and any crate on crates.io

Uptime history 43 hours of history
43 hours agonow
100.0%
Uptime 24h
91 of 91 checks
2
Tools
read from the server
431 ms
Response time
average over 24h
33
Stars
last commit 3 Aug 2026

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.

run in your terminal
claude mcp add rustdoc --transport http https://ferritin.rs/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "rustdoc": {
      "url": "https://ferritin.rs/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.rustdoc]
url = "https://ferritin.rs/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "rustdoc": {
      "url": "https://ferritin.rs/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "rustdoc": {
      "url": "https://ferritin.rs/mcp"
    }
  }
}

Available tools 2

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

get
get
Show documentation for a Rust item by path.
search
search
Search for items within a crate's documentation, or — without a crate — discover which crate to use.

Endpoints

URLTransportStateLatencyChecked
https://ferritin.rs/mcp streamable-http answering 470 ms 5 min ago

Ferritin — Rust documentation — questions

Answers built from our own checks of this server.

What can Ferritin — Rust documentation do?
It exposes 2 tools, read directly from the server on our last check. Among them: get, search. 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 Ferritin — Rust documentation 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 431 ms. The bar chart above shows every period we have measured.
How do I connect Ferritin — Rust documentation?
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 Ferritin — Rust documentation need an API key?
No. Ferritin — Rust documentation completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 2 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Ferritin — Rust documentation?
It answers our handshake in 431 ms on average, which is faster than 29% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Ferritin — Rust documentation open source?
Yes — it is published under the Apache-2.0 licence, written in Rust, 33 stars on GitHub and 1 open issue. The source link is on this page, so you can read exactly what it does with your data before you connect it.