Zovo Cross Sum Puzzles MCP Server

by theluckystrike Your server? Claim it

answering

Zovo Cross Sum Puzzles is answering right now. Last checked 13 min ago. It exposes 1 tools.

Make printable cross sum puzzles for puzzle fans, teachers and students as a PDF with an answer key.

Uptime history 10 hours of history

10 hours agonow

100.0%

Uptime 24h

36 of 36 checks

Tools

read from the server

328 ms

Response time

average over 24h

open, no key

Access

streamable-http

Nothing serious here today

Today is the operative word: we check Zovo Cross Sum Puzzles 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 13 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add cross-sums --transport http https://cross-sums.zovo.one/mcp

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

https://cross-sums.zovo.one/mcp

~/.codex/config.toml

[mcp_servers.cross-sums]
url = "https://cross-sums.zovo.one/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "cross-sums": {
      "url": "https://cross-sums.zovo.one/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "cross-sums": {
      "type": "http",
      "url": "https://cross-sums.zovo.one/mcp"
    }
  }
}

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.

generate

generate_cross_sums

Use this when the user wants printable cross-sum puzzles (cross sums, number crossword puzzles with sums, addition logic puzzles) as a PDF with an answer key, or wants to solve one on screen. Each grid from 6 x 6 to 12 x 12 (counting the clue row and column) has white squares for the digits 1 to 9 and clue squares with sums; each run of white squares adds up to its clue with no repeated digit. Put one object per puzzle in puzzles[] when they differ (size, difficulty, seed); for a set of the same kind, set count with size and difficulty. A solver checks each puzzle for one solution. The PDF has 1, 2 or 4 puzzles per page on Letter or A4, an optional title and name line, and answer pages; the card lets the user fill in digits and check them. Defaults: 1 medium 8 x 8 puzzle, Letter, 1 per page, name line and answer key on. Does not solve a puzzle from a photo or make grids larger than 12 x 12.

Endpoints

URL	Transport	State	Latency	Checked
https://cross-sums.zovo.one/mcp	streamable-http	answering	331 ms	13 min ago

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Zovo Cross Sum Puzzles — questions

Answers built from our own checks of this server.

What can Zovo Cross Sum Puzzles do?

It exposes 1 tools, read directly from the server on our last check. Among them: generate_cross_sums. 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 Zovo Cross Sum Puzzles working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 36 of 36 checks got a reply (100.0%), average response time 328 ms. The bar chart above shows every period we have measured.

How do I connect Zovo Cross Sum Puzzles?

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 Zovo Cross Sum Puzzles need an API key?

No. Zovo Cross Sum Puzzles 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 Zovo Cross Sum Puzzles?

It answers our handshake in 328 ms on average, which is faster than 43% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.