Sumbloom MCP Server

by workers-cybermax-tools-cybermax Your server? Claim it

answering

Sumbloom is answering right now. Last checked 4 min ago. It exposes 1 tools.

Number puzzle API + MCP: solver-checked puzzles as JSON/SVG, daily puzzle. $5/mo; 50 free/day.

Uptime history 15 days of history · worst day 99%

15 days agonow

100.0%

Uptime 24h

178 of 178 checks

Tools

read from the server

86 ms

Response time

average over 24h

open, no key

Access

streamable-http

Sumbloom missed one check this week

Everything else answered, so this is steady rather than shaky. We check every 15 minutes, which is how a one-off gets told apart from the start of a pattern, and how you hear about the next one within the hour instead of 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 4 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add sumbloom --transport http https://sumbloom.cybermax-tools.workers.dev/mcp?via=mcp-registry

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "sumbloom": {
      "url": "https://sumbloom.cybermax-tools.workers.dev/mcp?via=mcp-registry"
    }
  }
}

~/.codex/config.toml

[mcp_servers.sumbloom]
url = "https://sumbloom.cybermax-tools.workers.dev/mcp?via=mcp-registry"

.cursor/mcp.json

{
  "mcpServers": {
    "sumbloom": {
      "url": "https://sumbloom.cybermax-tools.workers.dev/mcp?via=mcp-registry"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "sumbloom": {
      "url": "https://sumbloom.cybermax-tools.workers.dev/mcp?via=mcp-registry"
    }
  }
}

This server publishes 1 more address. The block above uses the one we reach during checks; the full list is under Endpoints below, and the author may intend a particular one for your client.

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.

number

get_number_puzzle

Returns an original number puzzle (Target, Cage Grid or Brick Pyramid) at easy, medium or hard, with its rules, the puzzle as JSON, an SVG image URL for printing and, optionally, the solution. Cage Grids and Pyramids have exactly one solution (solver-checked). Use it for math practice, classroom warm-ups, puzzle apps or a daily puzzle. Free tier 50 puzzles a day without a key; paid API keys (Bearer) for more.

Endpoints

URL	Transport	State	Latency	Checked
https://sumbloom.cybermax-tools.workers.dev/mcp?via=mcp-registry	streamable-http	answering	63 ms	4 min ago
https://sumbloom.cybermaxtools.com/mcp?via=mcp-registry	streamable-http	answering	60 ms	4 min ago

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Sumbloom — questions

Answers built from our own checks of this server.

What can Sumbloom do?

It exposes 1 tools, read directly from the server on our last check. Among them: get_number_puzzle. 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 Sumbloom working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 178 of 178 checks got a reply (100.0%), average response time 86 ms. The bar chart above shows every period we have measured.

How do I connect Sumbloom?

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 Sumbloom need an API key?

No. Sumbloom 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 Sumbloom?

It answers our handshake in 86 ms on average, which is faster than 88% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.