update

src/type.jl

@@ -377,11 +377,17 @@ mutable struct yiemAgent <: agent             # High-level agent wrapper
   # Convert preprocessContext()'s new Vector{agentMessage} to LLM message format
   formatMsgForLLM::Function    
 
-  llmCall::Function                           # Actually invoke the LLM to get a completion response
+  # Actually invoke the LLM to get a completion response. The LLM response comes back as an 
+  # assistantMessage whose content is an array of content blocks. 
+  # Each block has a type — "text", "thinking", or "toolCall". 
+  # The code filters for type === "toolCall" blocks, then passes them to executeToolCalls().
+  llmCall::Function                           
                                               
   # Callback invoked before executing a tool call (ask for user permission/confirmation/abort, etc..)
   beforeToolCall::Union{Function, Nothing}    
 
+  executeToolCalls::Function                  # execute tool calls
+  
   # Callback invoked after executing a tool call to sanitize tools output so the output is ready 
   # to be converted into toolResults message
   afterToolCall::Union{Function, Nothing}     
@@ -389,7 +395,7 @@ mutable struct yiemAgent <: agent             # High-level agent wrapper
   prepareNextTurnWithContext::Union{Function, Nothing}  # Same but receives context
   sessionId::Union{String, Nothing}           # Optional session identifier
   maxRetryDelayMs::Union{Int64, Nothing}      # Maximum delay between retries (ms)
-  toolExecution::toolExecutionMode            # Default: run tool calls sequentially or in parallel
+  parallelToolExecute::Bool                   # Default: false
 end
 
 """
@@ -412,7 +418,7 @@ on `inputChannel` and `followUpChannel` channels concurrently.
 - `prepareNextTurnWithContext::Union{Function, Nothing}`: Same but receives context (default: `nothing`)
 - `sessionId::Union{String, Nothing}`: Optional session identifier (default: `nothing`)
 - `maxRetryDelayMs::Union{Int64, Nothing}`: Maximum delay between retries in milliseconds (default: `nothing`)
-- `toolExecution`: Default tool execution mode (sequential or parallel) (default: `nothing`)
+- `parallelToolExecute::Bool`: Run tool calls in parallel (default: `false`)
 
 # Returns
 - A new `yiemAgent` instance with an active background task
@@ -437,7 +443,7 @@ function yiemAgent(
     prepareNextTurnWithContext::Union{Function, Nothing}=nothing,
     sessionId::Union{String, Nothing}=nothing,
     maxRetryDelayMs::Union{Int64, Nothing}=nothing,
-    toolExecution=nothing,
+    parallelToolExecute::Bool=false,
   )
   # Create channels: input (user -> agent), followUp (async queue), output (agent -> user)
   inputChannel    = Channel(16)
@@ -460,7 +466,7 @@ function yiemAgent(
     prepareNextTurnWithContext,
     sessionId,
     maxRetryDelayMs,
-    toolExecution,
+    parallelToolExecute,
   )
 
   # Spawn the background loop and attach it