Module cohere 

Parser implementations for different model formats

This module contains concrete parser implementations for various model-specific tool/function call formats. Cohere Command model tool call parser

Parses tool calls from <|START_ACTION|>...<|END_ACTION|> blocks. Supports both CMD3 and CMD4 formats.

Format

Cohere models output tool calls in the following format:

<|START_RESPONSE|>Let me help with that.<|END_RESPONSE|>
<|START_ACTION|>
{"tool_name": "search", "parameters": {"query": "rust programming"}}
<|END_ACTION|>

Or for multiple tool calls:

<|START_ACTION|>
[
  {"tool_name": "search", "parameters": {"query": "rust"}},
  {"tool_name": "get_weather", "parameters": {"city": "Paris"}}
]
<|END_ACTION|>

Field Mapping

• tool_name → name
• parameters → arguments

Structs

CohereParser

Cohere Command model tool call parser