Cyber Library MCP Server

by cyberlibrary Your server? Claim it

answering

Cyber Library is answering right now. Last checked 16 min ago. It exposes 6 tools.

Search and read Cyber Library, a free structured cybersecurity knowledge base. Read-only, no auth.

Uptime history 21 days of history · worst day 0%

21 days agonow

29.7%

Uptime 24h

27 of 91 checks

Tools

read from the server

248 ms

Response time

average over 24h

open, no key

Access

streamable-http

Cyber Library does not always answer

Over the last week it answered 28.1% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 16 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add library --transport http https://www.cyberlibrary.com/api/mcp

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

https://www.cyberlibrary.com/api/mcp

~/.codex/config.toml

[mcp_servers.library]
url = "https://www.cyberlibrary.com/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "library": {
      "url": "https://www.cyberlibrary.com/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "library": {
      "type": "http",
      "url": "https://www.cyberlibrary.com/api/mcp"
    }
  }
}

Available tools 6

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

planned

get_planned_subtree

Outline of the planned taxonomy below a topic id (from search_planned_topics; omit for the Cyber root) with each topic's kind and status. Capped at 400 entries. Docs: https://www.cyberlibrary.com/en/mcp

search_planned_topics

Searches the structure database snapshot of the Cyber taxonomy: every planned topic (8k+), including drafts not yet published on the site, with its status (draft, review, ready, generated, published) and position. Use get_planned_subtree with an id to explore around a match. Docs: https://www.cyberlibrary.com/en/mcp

library

search_library

Full-text search over the published pages of cyberlibrary.com (titles, descriptions, paths). Returns the best matches with their path and URL; pass a path to get_page to read it. Docs: https://www.cyberlibrary.com/en/mcp

outline

get_outline

Indented outline of the library tree below a path (default: whole library) down to a given depth. Useful to understand how a domain is organized before reading pages. Capped at 400 entries. Docs: https://www.cyberlibrary.com/en/mcp

page

get_page

Returns a page of the Cyber Library as markdown with its metadata (title, URL, breadcrumbs, last update, contributors) and, for folders, the list of child pages. Paths look like "offensive/software/applications/server/containers/container-escape"; full URLs are accepted. Docs: https://www.cyberlibrary.com/en/mcp

topics

list_topics

Lists the direct children of a folder of the library (or the six top-level sections when no path is given): title, path, number of sub-pages and description. Docs: https://www.cyberlibrary.com/en/mcp

Endpoints

URL	Transport	State	Latency	Checked
https://www.cyberlibrary.com/api/mcp	streamable-http	answering	294 ms	16 min ago

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Cyber Library — questions

Answers built from our own checks of this server.

What can Cyber Library do?

It exposes 6 tools, read directly from the server on our last check. Among them: get_outline, get_page, get_planned_subtree, list_topics, search_library, search_planned_topics. 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 Cyber Library working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 27 of 91 checks got a reply (29.7%), average response time 248 ms. The bar chart above shows every period we have measured.

How do I connect Cyber Library?

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 Cyber Library need an API key?

No. Cyber Library completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Cyber Library?

It answers our handshake in 248 ms on average, which is faster than 56% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.