Module types 

Helper functions for common operations on yoagent types.

All message types are used directly from yoagent::types.

Enums

AgentMessage

Content

Message

Functions

assistant_message

Create a simple Assistant AgentMessage with text content.

base_model_config

Create a base ModelConfig for the opencode-go provider. Sets the standard context_window (1M) and max_tokens (393216) for DeepSeek v4 models. Callers override if needed.

content_tool_calls

Extract all tool calls from a Vec<Content>.

extension_message

Create an Extension message (pi-compatible custom_message). kind identifies the type (“info”, “error”, “system_stop”, etc.).

extension_message_with_details

Create an Extension message with structured details.

message_dedup_key

Compute a dedup key for a message, distinguishing messages that message_text() alone would conflate (e.g. two assistant messages with empty text but different tool calls).

message_error

Extract the error_message from an Assistant message, if present.

message_extension_kind

Get the kind/customType from an Extension message.

message_extension_text

Get the text content from an Extension message’s data field.

message_is_assistant

Check if an AgentMessage is an Assistant message.

message_is_error

Check if an AgentMessage is a tool result with an error.

message_is_extension

Check if an AgentMessage is an Extension message.

message_is_system_stop

Check if an AgentMessage is a system-generated stop notification (e.g. execution limit reached, max tokens exceeded). The agent loop injects these as user messages starting with [Agent stopped:.

message_is_tool_result

Check if an AgentMessage is a ToolResult message.

message_is_user

Check if an AgentMessage is a User message.

message_text

Get the text content of an AgentMessage (all text parts joined).

message_tool_call_count

Count how many tool calls are in an AgentMessage.

message_tool_call_id

Get the tool_call_id from a ToolResult message.

message_usage

Get the usage from an Assistant message.

tool_result_message

Create a ToolResult AgentMessage.

user_message

Create a simple User AgentMessage with text content.