MessageBuilder manages the full message lifecycle by accumulating conversation history and rendering the complete prompt, including system instructions, history, and reminders, on every turn.

Supporting contexts

Quoteverbatim

**MessageBuilder** (`message_builder.py`): Owns the full message lifecycle

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

Quoteverbatim

accumulates conversation history

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

Quoteverbatim

renders complete prompt (system + history + reminders) each turn

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

Effective from: 7/16/2026, 11:28:56 PM