update

src/type.jl

@@ -6,8 +6,8 @@
            modelCost, llmModel, llmUsage,
            # Message content types
            textContent, imageContent,
-           # Message types
-           userMessage, assistantMessage, toolResultMessage,
+            # Message types
+            userMessage, assistantMessageToolCall, assistantMessage, toolResultMessage,
             # Tool types
              agentTool, validateRequiredArgs,
            # Context types
@@ -108,6 +108,52 @@ function userMessage(; role="user", content=Vector{messageContent}(), timestamp=
     return userMessage(role, content, timestamp)
 end
 
+struct assistantMessageToolCall <: agentMessage   # Assistant message containing tool calls
+    role::String                            # Always "assistant"
+    toolCalls::Vector{agentToolCall}        # Tool calls to execute
+    content::Vector{messageContent}         # Reasoning/thinking content blocks
+    api::String                             # API name used (e.g., "openai")
+    provider::String                        # Provider name (e.g., "anthropic")
+    model::String                           # Model identifier
+    usage::llmUsage                         # Token usage for this message
+    stopReason::String                      # Why generation stopped (e.g., "tool_calls")
+    errorMessage::Union{String, Nothing}    # Error if generation failed
+    timestamp::Timestamp                    # When the message was received
+end
+
+"""
+Create a new assistant message containing tool calls.
+
+# Arguments
+- `role::String`: Always "assistant"
+- `toolCalls::Vector{agentToolCall}`: Tool calls to execute
+- `content::Vector{messageContent}`: Reasoning/thinking content blocks
+- `api::String`: API name used
+- `provider::String`: Provider name
+- `model::String`: Model identifier
+- `usage::llmUsage`: Token usage
+- `stopReason::String`: Why generation stopped
+- `errorMessage::Union{String, Nothing}`: Error if generation failed
+- `timestamp::Timestamp`: When the message was received
+
+# Returns
+- A new `assistantMessageToolCall` instance
+
+# Examples
+```julia
+julia> tc = agentToolCall("function", "call_1", "getWeather", Dict("city" => "Tokyo"))
+julia> msg = assistantMessageToolCall(toolCalls=[tc], stopReason="tool_calls")
+assistantMessageToolCall("assistant", [agentToolCall(...)], messageContent[], "", "", "", llmUsage(0, 0), "tool_calls", nothing, DateTime(...))
+```
+"""
+function assistantMessageToolCall(; role="assistant", toolCalls=agentToolCall[],
+    content=Vector{messageContent}(), api="", provider="", model=nothing, usage=llmUsage(0, 0),
+    stopReason="tool_calls", errorMessage=nothing, timestamp=now())
+    model_str = model isa AbstractString ? String(model) : ""
+    return assistantMessageToolCall(role, toolCalls, content, api, provider, model_str,
+                                     usage, stopReason, errorMessage, timestamp)
+end
+
 struct assistantMessage <: agentMessage     # Message from the AI assistant
     role::String                            # Always "assistant"
     content::Vector{messageContent}         # Text and/or image content
@@ -434,13 +480,13 @@ end
 Context passed to the `beforeToolCall` hook.
 
 # Arguments
-- `message::assistantMessage`: The assistant message containing the tool call
+- `message::assistantMessageToolCall`: The assistant message containing the tool call
 - `toolCall::agentToolCall`: The tool call being prepared
 - `args::Dict{String,Any}`: Validated tool arguments
 - `context::agentContext`: Current conversation context
 """
 struct beforeToolCallContext
-    message::assistantMessage
+    message::assistantMessageToolCall
     toolCall::agentToolCall
     args::Dict{String,Any}
     context::agentContext
@@ -455,7 +501,7 @@ end
 Context passed to the `afterToolCall` hook.
 
 # Arguments
-- `message::assistantMessage`: The assistant message containing the tool call
+- `message::assistantMessageToolCall`: The assistant message containing the tool call
 - `toolCall::agentToolCall`: The tool call that was executed
 - `args::Dict{String,Any}`: Tool arguments
 - `result::agentToolResult`: The raw tool result
@@ -463,7 +509,7 @@ Context passed to the `afterToolCall` hook.
 - `context::agentContext`: Current conversation context
 """
 struct afterToolCallContext
-    message::assistantMessage
+    message::assistantMessageToolCall
     toolCall::agentToolCall
     args::Dict{String,Any}
     result::agentToolResult