> For the complete documentation index, see [llms.txt](https://docs.tdmai.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tdmai.org/ietf-technical-specification.md).

# IETF – Technical Specification

- [Usage Preferences Vocabulary](https://docs.tdmai.org/ietf-technical-specification/usage-preferences-vocabulary.md): 2025-11-04
- [JSON Format for Usage Declarations](https://docs.tdmai.org/ietf-technical-specification/json-format-for-usage-declarations.md): 2025-11-04
- [Updates](https://docs.tdmai.org/ietf-technical-specification/updates.md): 2025-07-21
- [JSON Schema Definition](https://docs.tdmai.org/ietf-technical-specification/json-schema-definition.md): 2025-04-11