Token-Oriented Object Notation (TOON) Skill by ara.so — Daily 2026 Skills collection. TOON is a compact, human-readable encoding of the JSON data model that minimizes tokens for LLM input. It combines YAML-style indentation for nested objects with CSV-style tabular layout for uniform arrays, achieving 40% token reduction while maintaining or improving LLM comprehension accuracy. Installation CLI Core API encode / stringify decode / parse Encoding options Format Overview Primitive scalars TOON encodes scalars the same way as YAML — unquoted when unambiguous: Nested objects (YAML-style indentat…