Koskamo

Zovo Math Cages MCP

Generates printable arithmetic cage puzzles for teachers, students, and puzzle fans. It creates grids from 4x4 to 9x9 with specified operations and difficulty, ensuring a single solution via a solver, and outputs PDFs with answer keys.

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Endpoint and access

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Zovo Math Cages MCP logo, by ZovoCommunity listingStreamable HTTPNo sign-inEndpoint checked 2026-11-08Published by Zovo
MCP endpoint (Streamable HTTP)
https://math-cages.zovo.one/mcp
Vendor documentation

What its tools do

1 tool, grouped by the hints the server advertises. Hints are self-declared, not verified behavior.

Read-only (1)

1 of 1 have a description · 1 of 1 declare behavior hints · 1 of 1 with parameters document them all

Checks and signals

Each line is separate evidence, not a trust score.

  • Passed Endpoint answered the live check ·
  • Availability 1 of 1 checks passed in 30 days

What you can do with it

  • Generate printable math cage puzzles for classroom use
  • Create puzzles with specific operations like addition or division
  • Produce PDFs with answer keys for students
  • Reprint identical puzzles using specific seeds

Source and maintenance

Community listingRegistry 1.0.0
mcp-registry: io.github.theluckystrike/math-cages@1.0.0Project website

Protocol and capabilities

Server
math-cages 1.0.0
MCP protocol negotiated in check
2025-11-25
Tools
1 advertised
Resources
1 advertised
Resource templates
1 advertised
Prompts
Not advertised
Server-advertised capabilities
{
  "tools": {
    "listChanged": true
  },
  "resources": {
    "listChanged": true
  }
}

Server-provided instructions

Untrusted server output shown for inspection. It is not Koskamo guidance and is excluded from knowledge search.

Zovo Math Cages makes printable math cage puzzles (a Latin-square grid split into cages; each cage shows a target number and a sign) as a PDF with an answer key. Call generate_math_cages with one object per puzzle in puzzles[] when they differ, or count plus size, operations and difficulty for a set. Pass the operations the user names (for example "+ -" or "no division"). Each puzzle is checked by a solver to have one solution. Do not print the answers in chat unless asked; they are on the answer pages.

Tools

1 advertised

generate_math_cages — Generate math cage puzzles
Advertised by the server during the last successful anonymous check.
Advertised read-only

Use this when the user wants printable math cage puzzles (arithmetic cage puzzles, calculation sudoku-style grids with cages, math logic puzzles for a class) as a PDF with an answer key. Each grid from 4 x 4 to 9 x 9 uses the numbers 1 to N once per row and column; each cage shows a target and a sign. Put one object per puzzle in puzzles[] when they differ (size, operations, difficulty); for a set of the same kind, set count with size, operations and difficulty. Operations accept signs or words ("+ -", "add only", "all four", "no division"). 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. Defaults: 1 medium 6 x 6 puzzle with all four operations, Letter, 1 per page, name line and answer key on. Does not solve a puzzle from a photo or make grids larger than 9 x 9.

generate_math_cages input schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "properties": {
    "seed": {
      "type": [
        "number",
        "string",
        "null"
      ],
      "description": "Starting seed; puzzle N uses seed + N - 1. Reuse it to reprint the same puzzles. Example: 2026"
    },
    "size": {
      "type": [
        "number",
        "string",
        "null"
      ],
      "description": "Grid size for all puzzles, 4 to 9 (default 6). Example: 5"
    },
    "count": {
      "type": [
        "number",
        "string",
        "null"
      ],
      "description": "How many puzzles when they are all the same kind (1 to 12, default 1). Example: 4"
    },
    "paper": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 30
        },
        {
          "type": "null"
        }
      ],
      "description": "letter (default, US 8.5 x 11 in) or a4. Example: a4"
    },
    "title": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 200
        },
        {
          "type": "null"
        }
      ],
      "description": "Title printed at the top of each page. Example: Friday Math Challenge"
    },
    "puzzles": {
      "anyOf": [
        {
          "type": "array",
          "items": {
            "type": "object",
            "properties": {
              "seed": {
                "type": [
                  "number",
                  "string",
                  "null"
                ],
                "description": "Seed for this puzzle (same seed and settings give the same puzzle). Example: 4821"
              },
              "size": {
                "type": [
                  "number",
                  "string",
                  "null"
                ],
                "description": "Grid size from 4 to 9 (4 means 4 x 4 with the numbers 1 to 4). Example: 6"
              },
              "difficulty": {
                "anyOf": [
                  {
                    "type": "string",
                    "maxLength": 40
                  },
                  {
                    "type": "null"
                  }
                ],
                "description": "easy, medium (default) or hard. Harder puzzles have bigger cages and fewer single-number cells. Example: hard"
              },
              "operations": {
                "anyOf": [
                  {
                    "anyOf": [
                      {
                        "type": "string",
                        "maxLength": 80
                      },
                      {
                        "type": "array",
                        "items": {
                          "type": "string",
                          "maxLength": 30
                        },
                        "maxItems": 8
                      }
                    ]
                  },
                  {
                    "type": "null"
                  }
                ],
                "description": "Signs the cages may use: \"+\", \"-\", \"x\", \"/\", words such as \"add only\", \"all four\", \"no division\", or a list. Example: \"+ -\""
              }
            },
            "additionalProperties": {}
          },
          "maxItems": 12
        },
        {
          "type": "null"
        }
      ],
      "description": "One object per puzzle when the puzzles differ, e.g. [{\"size\":4,\"operations\":\"add only\"},{\"size\":6,\"difficulty\":\"hard\"}]. Leave out and use count for a set of the same kind. Up to 12."
    },
    "per_page": {
      "type": [
        "number",
        "string",
        "null"
      ],
      "description": "Puzzles per printed page: 1 (default), 2 or 4. Example: 2"
    },
    "name_line": {
      "type": [
        "boolean",
        "string",
        "number",
        "null"
      ],
      "description": "Print a Name and Date line on the puzzle pages (default true). Example: false"
    },
    "answer_key": {
      "type": [
        "boolean",
        "string",
        "number",
        "null"
      ],
      "description": "Add answer pages with the solved grids (default true). Example: true"
    },
    "difficulty": {
      "anyOf": [
        {
          "type": "string",
          "maxLength": 40
        },
        {
          "type": "null"
        }
      ],
      "description": "Difficulty for all puzzles: easy, medium (default) or hard. Example: easy"
    },
    "operations": {
      "anyOf": [
        {
          "anyOf": [
            {
              "type": "string",
              "maxLength": 80
            },
            {
              "type": "array",
              "items": {
                "type": "string",
                "maxLength": 30
              },
              "maxItems": 8
            }
          ]
        },
        {
          "type": "null"
        }
      ],
      "description": "Signs for all puzzles: + - x / (default all four), or words such as \"addition and subtraction only\", \"no division\". Example: \"+ x\""
    }
  }
}
generate_math_cages output schema
{
  "type": "object",
  "$schema": "http://json-schema.org/draft-07/schema#",
  "required": [
    "title",
    "count",
    "per_page",
    "paper",
    "pages",
    "answer_key",
    "name_line",
    "all_one_solution",
    "puzzles",
    "notes",
    "downloads"
  ],
  "properties": {
    "count": {
      "type": "number"
    },
    "notes": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "pages": {
      "type": "number"
    },
    "paper": {
      "type": "string"
    },
    "title": {
      "type": "string"
    },
    "puzzles": {
      "type": "array",
      "items": {
        "type": "object",
        "required": [
          "number",
          "size",
          "difficulty",
          "operations",
          "cages",
          "givens",
          "largest_cage",
          "one_solution",
          "solver_steps",
          "seed"
        ],
        "properties": {
          "seed": {
            "type": "number"
          },
          "size": {
            "type": "string"
          },
          "cages": {
            "type": "number"
          },
          "givens": {
            "type": "number"
          },
          "number": {
            "type": "number"
          },
          "difficulty": {
            "type": "string"
          },
          "operations": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "largest_cage": {
            "type": "number"
          },
          "one_solution": {
            "type": "boolean"
          },
          "solver_steps": {
            "type": "number"
          }
        },
        "additionalProperties": false
      }
    },
    "per_page": {
      "type": "number"
    },
    "downloads": {
      "type": "object",
      "required": [
        "pdf"
      ],
      "properties": {
        "pdf": {
          "type": "string"
        }
      },
      "additionalProperties": false
    },
    "name_line": {
      "type": "boolean"
    },
    "answer_key": {
      "type": "boolean"
    },
    "puzzle_count": {
      "type": "object",
      "required": [
        "shown",
        "total"
      ],
      "properties": {
        "shown": {
          "type": "number"
        },
        "total": {
          "type": "number"
        }
      },
      "additionalProperties": false
    },
    "all_one_solution": {
      "type": "boolean"
    }
  },
  "additionalProperties": false
}
generate_math_cages annotations
{
  "title": "Generate math cage puzzles",
  "readOnlyHint": true,
  "openWorldHint": false,
  "idempotentHint": true,
  "destructiveHint": false
}

Prompts

Not advertised

No prompt definitions available.

Resources

1 advertised

math-cages-widget — Zovo Math Cages view

Advertised by the server during the last successful anonymous check.

Interactive view for Zovo Math Cages.

math-cages-widget URI
ui://widget/math-cages-v1-1.0.0-ecd07267ffdc48ed44d1a9b0a0d10a4d8b14adc7a1cdb869a354038f621fd1be.html

MIME type: text/html;profile=mcp-app

math-cages-widget-legacy — Zovo Math Cages view (previous versions)

Advertised by the server during the last successful anonymous check.

math-cages-widget-legacy URI template
ui://widget/math-cages-{version}.html

MIME type: text/html;profile=mcp-app

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
385 ms
95th percentile latency
385 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 385 ms · metadata changed · 1 tool(s), 1 resource(s), 1 resource template(s)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http zovo-math-cages-mcp https://math-cages.zovo.one/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add zovo-math-cages-mcp --url https://math-cages.zovo.one/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable zovo-math-cages-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "zovo-math-cages-mcp": {
      "url": "https://math-cages.zovo.one/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "zovo-math-cages-mcp": {
      "type": "streamableHttp",
      "url": "https://math-cages.zovo.one/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start zovo-math-cages-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "zovo-math-cages-mcp": {
      "type": "http",
      "url": "https://math-cages.zovo.one/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http zovo-math-cages-mcp https://math-cages.zovo.one/mcp

Claude Desktop

Open Claude Settings > Connectors > Add custom connector, enter this server URL and enable it for the conversation. This is a manual remote-connector handoff, not a desktop JSON configuration.
Claude Desktop configuration
https://math-cages.zovo.one/mcp

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "zovo-math-cages-mcp": {
      "serverUrl": "https://math-cages.zovo.one/mcp"
    }
  }
}

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