diff --git a/src/agentCore.jl b/src/agentCore.jl
index 6b96c57..0ee5916 100644
--- a/src/agentCore.jl
+++ b/src/agentCore.jl
@@ -5,7 +5,7 @@ export _agent_loop, OpenAiToUserMessage
 using JSON, DataStructures, Dates, UUIDs, HTTP, Random, PrettyPrinting, Serialization,
       DataFrames, Serde, Base.Threads
 using GeneralUtils
-using ..type, ..utils, ..llmfunction
+using ..type, ..utils
 
 # ---------------------------------------------- 100 --------------------------------------------- #
 
@@ -406,7 +406,7 @@ julia> shouldTerminate([finalizedOutcome(tc, agentToolResult([], dict{any,any}()
 true
 ```
 """
-function shouldTerminate(batches::vector{finalizedOutcome})::bool
+function shouldTerminate(batches::Vector{finalizedOutcome})::Bool
     return !isempty(batches) && all(b -> b.result.terminate, batches)
 end
 
@@ -513,8 +513,8 @@ function prepareToolCall(
     assistantMsg::assistantMessage,
     toolCall::agentToolCall,
     config::agentLoopConfig,
-    signal::union{nothing,abortSignal},
-)::union{preparedToolCall,immediateOutcome}
+    signal::Union{Nothing, abortSignal},
+)::Union{preparedToolCall,immediateOutcome}
 
     tool = find(t -> t.name == toolCall.name, context.tools)
     if tool === nothing
@@ -588,7 +588,7 @@ executePreparedToolCall(prep, nothing, emit)
 """
 function executePreparedToolCall(
     prep::preparedToolCall,
-    signal::union{nothing,abortSignal},
+    signal::Union{Nothing,abortSignal},
     emit::Function,
 )::executedOutcome
 
@@ -678,7 +678,7 @@ function finalizeExecutedToolCall(
     prep::preparedToolCall,
     executed::executedOutcome,
     config::agentLoopConfig,
-    signal::union{nothing,abortSignal},
+    signal::Union{Nothing,abortSignal},
 )::finalizedOutcome
 
     result = executed.result
@@ -795,9 +795,9 @@ executeToolCallsSequential(ctx, msg, [deployTc], config, nothing, emit)
 function executeToolCallsSequential(
     context::agentContext,
     assistantMsg::assistantMessage,
-    toolCalls::vector{agentToolCall},
+    toolCalls::Vector{agentToolCall},
     config::agentLoopConfig,
-    signal::union{nothing,abortSignal},
+    signal::Union{Nothing,abortSignal},
     emit::Function,
 )::agentToolCallBatch
 
@@ -888,9 +888,9 @@ executeToolCallsParallel(ctx, msg, [tc1, tc2, tc3], config, abortedSignal, emit)
 function executeToolCallsParallel(
     context::agentContext,
     assistantMsg::assistantMessage,
-    toolCalls::vector{agentToolCall},
+    toolCalls::Vector{agentToolCall},
     config::agentLoopConfig,
-    signal::union{nothing,abortSignal},
+    signal::Union{Nothing,abortSignal},
     emit::Function,
 )::agentToolCallBatch
 
@@ -988,9 +988,9 @@ executeToolCalls(ctx, msg, [searchTc, fetchTc], configSequential, nothing, emit)
 function executeToolCalls(
     context::agentContext,
     assistantMsg::assistantMessage,
-    toolCalls::vector{agentToolCall},
+    toolCalls::Vector{agentToolCall},
     config::agentLoopConfig,
-    signal::union{nothing,abortSignal},
+    signal::Union{Nothing,abortSignal},
     emit::Function,
 )::agentToolCallBatch
 
diff --git a/src/api.jl b/src/api.jl
index 9412301..2ec3c6a 100644
--- a/src/api.jl
+++ b/src/api.jl
@@ -5,7 +5,7 @@ export prompt
 using JSON, DataStructures, Dates, UUIDs, HTTP, Random, PrettyPrinting, Serialization,
       DataFrames, Serde
 using GeneralUtils
-using ..type, ..util, ..llmfunction
+using ..type, ..utils, ..llmfunction
 
 # ---------------------------------------------- 100 --------------------------------------------- #