mathpack

Printable math practice for grades K through 12, without opening a browser or wrestling a PDF editor. mathpack talks to the Mathter service and gives you three things: the list of skills that exist right now and the grades each one covers, a straight answer about how many packs your account has left this month, and the pack itself — a PDF written straight into your output folder, ready to print.

The three tools:

• list_skills — which skills are on offer and which grades each covers. This list is public, so no API key is sent on this call.
• check_allowance — how many packs the account has left, which plan it is on, and the date the allowance resets.
• generate_worksheet_pack — build a pack for one skill and grade, with control over theme, style, difficulty, title, worksheet and problem counts, answer keys, cover and lesson pages, worked solutions, single-number focus drills, charts, timed mode, diagrams, blank graphs, unit system, and a seed that reproduces an identical pack. Only skill and grade are required.

Generated files are named mathter-grade-<grade>-<skill>-<YYYY-MM-DD-HHmm>.pdf after the moment they were made, and a name that is already taken gains a -2, -3, … suffix — names never collide, and a finished pack is never overwritten. The tool answers with the absolute path of the file it wrote, and nothing else.

Configuration

export MATHTER_API_KEY="..."     # required for check_allowance and generate_worksheet_pack
export MATHTER_BASE_URL="https://mathter.ca"   # optional override
export MATHTER_OUT_DIR="/path/to/folder"       # optional; defaults to your Downloads folder

The key goes out only as the bearer header of the allowance and generate calls — never to the public skills endpoint, never into a file, and never into an answer: every result and error text is filtered for the key value before it comes back. When a call fails, the answer is a plain sentence about what happened: the key was not accepted, the month's credits are gone, that style is not on the account's plan, Mathter is rate-limiting, the renderer is busy, the configuration was rejected, or the service is unreachable.

CLI

npx @reneturcios/mathpack list_skills
npx @reneturcios/mathpack check_allowance
npx @reneturcios/mathpack generate_worksheet_pack '{"skill":"multiplication","grade":4,"title":"Times tables","chart":"blank"}'
npx @reneturcios/mathpack --version

The generate subcommand prints the absolute path of the PDF it wrote. Exit codes: 0 on success, 1 on a runtime error, 2 on a usage error.

MCP server

npx -y @reneturcios/mathpack mcp

MCP client config:

{
  "mcpServers": {
    "mathpack": {
      "command": "npx",
      "args": ["-y", "@reneturcios/mathpack", "mcp"],
      "env": {
        "MATHTER_API_KEY": "..."
      }
    }
  }
}

Docker

docker run -i ghcr.io/cloudcorprecords/mathpack
docker run --rm -e MATHTER_API_KEY="..." ghcr.io/cloudcorprecords/mathpack check_allowance

Development

npm install
npm run build   # tsc -> dist/
npm test        # tsx --test test/*.test.ts (fake fetch, fake writer, fake clock, no network)
npm run dev     # run the CLI from source

License

MIT — Copyright (c) 2026 Rene Turcios