K2-Horizon-MoVA-36B-A4B: Jinja2 template for automatically converting JSON schemas to XML and Markdown

One of the most tedious tasks in LLM agent development is formatting tool definitions (Tool Schemas) into a format that models can easily understand. This template takes complex JSON schemas as input and instantly converts them into various text formats such as XML, Markdown, and Python.

Beyond simple conversion, it includes built-in logic to validate schema validity. It detects missing required fields or incorrect type declarations, and automatically handles complex structures such as $ref references and oneOf/anyOf. For structures that cannot be rendered, it falls back to the original JSON to prevent errors.

It reduces the time spent manually refining schemas during prompt engineering. It is particularly useful for building agent systems that prefer XML-based prompts or require highly readable Markdown-formatted tool descriptions.