HARMONY_PARSER

─ Parse OpenAI Harmony Response Format with channels, reasoning, and tool calls

HARMONY_INPUT │ Raw conversation data with special tokens

<|start|> Message start (200006)

<|end|> Message end (200007)

<|message|> Content start (200008)

<|channel|> Channel routing (200005)

<|constrain|> Type constraint (200003)

<|return|> Completion end (200002)

<|call|> Tool call (200012)

final

User-facing responses

analysis

Chain-of-thought (CoT)

commentary

Tool calls & preambles

system - Meta information, reasoning effort, built-in tools

developer - Instructions ("system prompt") and function tools

user - Input to the model

assistant - Model output with channel routing

tool - Tool call responses (e.g., functions.get_weather)