Ferritin — Rust documentation MCP Server

by ferritin

answering

Ferritin — Rust documentation is answering right now. Last checked 3 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 54 hours of history

54 hours agonow

100.0%

Uptime 24h

92 of 92 checks

Tools

read from the server

426 ms

Response time

average over 24h

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 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

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 for items within a crate's documentation, or — without a crate — discover which crate to use.

Endpoints

URL	Transport	State	Latency	Checked
https://ferritin.rs/mcp	streamable-http	answering	394 ms	3 min ago

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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 92 of 92 checks got a reply (100.0%), average response time 426 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 426 ms on average, which is faster than 32% 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.