diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttribute.h b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttribute.h
index 4c1a2c97..f30041d9 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttribute.h
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttribute.h
@@ -11,6 +11,9 @@
 
 #include "AGBase.h"
 #include "AGAttributeFlags.h"
+#include "AGInputOptions.h"
+#include "AGAttributeInfo.h"
+#include "AGTypeID.h"
 
 typedef uint32_t AGAttribute __attribute((swift_newtype(struct)));
 
@@ -19,22 +22,17 @@ AG_EXTERN_C_BEGIN
 AG_EXPORT
 const AGAttribute AGAttributeNil;
 
-AG_EXTERN_C_BEGIN
-AG_EXPORT
-const AGAttribute AGAttributeNil;
-AG_EXTERN_C_END
-
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
 AGAttribute AGGraphGetCurrentAttribute(void);
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, uint64_t offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
+AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, long offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, uint64_t offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
+AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, long offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
@@ -44,6 +42,26 @@ AG_EXPORT
 AG_REFINED_FOR_SWIFT
 void AGGraphSetFlags(AGAttribute attribute, AGAttributeFlags flags) AG_SWIFT_NAME(setter:AGAttribute.flags(self:_:));
 
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphAddInput(AGAttribute attribute1, AGAttribute attribute2, AGInputOptions options, long token);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+const AGAttributeInfo AGGraphGetAttributeInfo(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphMutateAttribute(AGAttribute attribute, const AGTypeID type, bool invalidating/*, closure*/);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+AGAttribute AGGraphGetIndirectDependency(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphSetIndirectDependency(AGAttribute attribute1, AGAttribute attribute2);
+
 AG_EXTERN_C_END
 
 #endif /* AGAttribute_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttributeInfo.h b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttributeInfo.h
new file mode 100644
index 00000000..390547a5
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttributeInfo.h
@@ -0,0 +1,23 @@
+//
+//  AGAttributeInfo.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeInfo_h
+#define AGAttributeInfo_h
+
+#include "AGBase.h"
+#include "AGAttributeType.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeInfo {
+    const AGAttributeType* type;
+    const void *body;
+} AGAttributeInfo;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeInfo_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttributeType.h b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttributeType.h
new file mode 100644
index 00000000..4229ac2c
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGAttributeType.h
@@ -0,0 +1,24 @@
+//
+//  AGAttributeType.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeType_h
+#define AGAttributeType_h
+
+#include "AGBase.h"
+#include "AGTypeID.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeType {
+    AGTypeID typeID;
+    AGTypeID valueTypeID;
+    // TODO
+} AGAttributeType;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeType_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGInputOptions.h b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGInputOptions.h
new file mode 100644
index 00000000..54abdc1e
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGInputOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGInputOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGInputOptions_h
+#define AGInputOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGInputOptions) {
+    AGInputOptions_0 = 0,
+    AGInputOptions_1 = 1,
+};
+
+#endif /* AGInputOptions_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGSearchOptions.h b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGSearchOptions.h
new file mode 100644
index 00000000..8cd7de49
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AGSearchOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGSearchOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGSearchOptions_h
+#define AGSearchOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGSearchOptions) {
+    AGSearchOptions_0 = 0,
+    AGSearchOptions_1 = 1,
+};
+
+#endif /* Header_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
index 2bec2681..2d97ccc3 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
@@ -8,12 +8,16 @@
 
 #include "AGAttribute.h"
 #include "AGAttributeFlags.h"
+#include "AGAttributeInfo.h"
+#include "AGAttributeType.h"
 #include "AGAttributeTypeFlags.h"
 #include "AGBase.h"
 #include "AGCompareValues.h"
 #include "AGComparisonMode.h"
 #include "AGDebugServer.h"
 #include "AGGraph.h"
+#include "AGInputOptions.h"
+#include "AGSearchOptions.h"
 #include "AGSubgraph.h"
 #include "AGSwiftMetadata.h"
 #include "AGTupleType.h"
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios.swiftinterface b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios.swiftinterface
index 7fbce9da..fdd66c28 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios.swiftinterface
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios.swiftinterface
@@ -13,14 +13,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -60,6 +66,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-ios.swiftinterface b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-ios.swiftinterface
index 7fbce9da..fdd66c28 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-ios.swiftinterface
+++ b/AG/AttributeGraph.xcframework/ios-arm64-arm64e/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-ios.swiftinterface
@@ -13,14 +13,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -60,6 +66,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttribute.h b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttribute.h
index 4c1a2c97..f30041d9 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttribute.h
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttribute.h
@@ -11,6 +11,9 @@
 
 #include "AGBase.h"
 #include "AGAttributeFlags.h"
+#include "AGInputOptions.h"
+#include "AGAttributeInfo.h"
+#include "AGTypeID.h"
 
 typedef uint32_t AGAttribute __attribute((swift_newtype(struct)));
 
@@ -19,22 +22,17 @@ AG_EXTERN_C_BEGIN
 AG_EXPORT
 const AGAttribute AGAttributeNil;
 
-AG_EXTERN_C_BEGIN
-AG_EXPORT
-const AGAttribute AGAttributeNil;
-AG_EXTERN_C_END
-
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
 AGAttribute AGGraphGetCurrentAttribute(void);
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, uint64_t offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
+AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, long offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, uint64_t offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
+AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, long offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
@@ -44,6 +42,26 @@ AG_EXPORT
 AG_REFINED_FOR_SWIFT
 void AGGraphSetFlags(AGAttribute attribute, AGAttributeFlags flags) AG_SWIFT_NAME(setter:AGAttribute.flags(self:_:));
 
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphAddInput(AGAttribute attribute1, AGAttribute attribute2, AGInputOptions options, long token);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+const AGAttributeInfo AGGraphGetAttributeInfo(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphMutateAttribute(AGAttribute attribute, const AGTypeID type, bool invalidating/*, closure*/);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+AGAttribute AGGraphGetIndirectDependency(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphSetIndirectDependency(AGAttribute attribute1, AGAttribute attribute2);
+
 AG_EXTERN_C_END
 
 #endif /* AGAttribute_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttributeInfo.h b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttributeInfo.h
new file mode 100644
index 00000000..390547a5
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttributeInfo.h
@@ -0,0 +1,23 @@
+//
+//  AGAttributeInfo.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeInfo_h
+#define AGAttributeInfo_h
+
+#include "AGBase.h"
+#include "AGAttributeType.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeInfo {
+    const AGAttributeType* type;
+    const void *body;
+} AGAttributeInfo;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeInfo_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttributeType.h b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttributeType.h
new file mode 100644
index 00000000..4229ac2c
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGAttributeType.h
@@ -0,0 +1,24 @@
+//
+//  AGAttributeType.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeType_h
+#define AGAttributeType_h
+
+#include "AGBase.h"
+#include "AGTypeID.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeType {
+    AGTypeID typeID;
+    AGTypeID valueTypeID;
+    // TODO
+} AGAttributeType;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeType_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGInputOptions.h b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGInputOptions.h
new file mode 100644
index 00000000..54abdc1e
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGInputOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGInputOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGInputOptions_h
+#define AGInputOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGInputOptions) {
+    AGInputOptions_0 = 0,
+    AGInputOptions_1 = 1,
+};
+
+#endif /* AGInputOptions_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGSearchOptions.h b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGSearchOptions.h
new file mode 100644
index 00000000..8cd7de49
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AGSearchOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGSearchOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGSearchOptions_h
+#define AGSearchOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGSearchOptions) {
+    AGSearchOptions_0 = 0,
+    AGSearchOptions_1 = 1,
+};
+
+#endif /* Header_h */
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
index 2bec2681..2d97ccc3 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
@@ -8,12 +8,16 @@
 
 #include "AGAttribute.h"
 #include "AGAttributeFlags.h"
+#include "AGAttributeInfo.h"
+#include "AGAttributeType.h"
 #include "AGAttributeTypeFlags.h"
 #include "AGBase.h"
 #include "AGCompareValues.h"
 #include "AGComparisonMode.h"
 #include "AGDebugServer.h"
 #include "AGGraph.h"
+#include "AGInputOptions.h"
+#include "AGSearchOptions.h"
 #include "AGSubgraph.h"
 #include "AGSwiftMetadata.h"
 #include "AGTupleType.h"
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios-simulator.swiftinterface b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios-simulator.swiftinterface
index 9c19df6c..b08d1296 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios-simulator.swiftinterface
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-ios-simulator.swiftinterface
@@ -13,14 +13,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -60,6 +66,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-ios-simulator.swiftinterface b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-ios-simulator.swiftinterface
index 9197e012..5bf1d130 100644
--- a/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-ios-simulator.swiftinterface
+++ b/AG/AttributeGraph.xcframework/ios-arm64-x86_64-simulator/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-ios-simulator.swiftinterface
@@ -13,14 +13,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -60,6 +66,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttribute.h b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttribute.h
index 4c1a2c97..f30041d9 100644
--- a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttribute.h
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttribute.h
@@ -11,6 +11,9 @@
 
 #include "AGBase.h"
 #include "AGAttributeFlags.h"
+#include "AGInputOptions.h"
+#include "AGAttributeInfo.h"
+#include "AGTypeID.h"
 
 typedef uint32_t AGAttribute __attribute((swift_newtype(struct)));
 
@@ -19,22 +22,17 @@ AG_EXTERN_C_BEGIN
 AG_EXPORT
 const AGAttribute AGAttributeNil;
 
-AG_EXTERN_C_BEGIN
-AG_EXPORT
-const AGAttribute AGAttributeNil;
-AG_EXTERN_C_END
-
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
 AGAttribute AGGraphGetCurrentAttribute(void);
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, uint64_t offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
+AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, long offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, uint64_t offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
+AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, long offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
@@ -44,6 +42,26 @@ AG_EXPORT
 AG_REFINED_FOR_SWIFT
 void AGGraphSetFlags(AGAttribute attribute, AGAttributeFlags flags) AG_SWIFT_NAME(setter:AGAttribute.flags(self:_:));
 
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphAddInput(AGAttribute attribute1, AGAttribute attribute2, AGInputOptions options, long token);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+const AGAttributeInfo AGGraphGetAttributeInfo(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphMutateAttribute(AGAttribute attribute, const AGTypeID type, bool invalidating/*, closure*/);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+AGAttribute AGGraphGetIndirectDependency(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphSetIndirectDependency(AGAttribute attribute1, AGAttribute attribute2);
+
 AG_EXTERN_C_END
 
 #endif /* AGAttribute_h */
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttributeInfo.h b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttributeInfo.h
new file mode 100644
index 00000000..390547a5
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttributeInfo.h
@@ -0,0 +1,23 @@
+//
+//  AGAttributeInfo.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeInfo_h
+#define AGAttributeInfo_h
+
+#include "AGBase.h"
+#include "AGAttributeType.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeInfo {
+    const AGAttributeType* type;
+    const void *body;
+} AGAttributeInfo;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeInfo_h */
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttributeType.h b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttributeType.h
new file mode 100644
index 00000000..4229ac2c
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGAttributeType.h
@@ -0,0 +1,24 @@
+//
+//  AGAttributeType.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeType_h
+#define AGAttributeType_h
+
+#include "AGBase.h"
+#include "AGTypeID.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeType {
+    AGTypeID typeID;
+    AGTypeID valueTypeID;
+    // TODO
+} AGAttributeType;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeType_h */
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGInputOptions.h b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGInputOptions.h
new file mode 100644
index 00000000..54abdc1e
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGInputOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGInputOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGInputOptions_h
+#define AGInputOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGInputOptions) {
+    AGInputOptions_0 = 0,
+    AGInputOptions_1 = 1,
+};
+
+#endif /* AGInputOptions_h */
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGSearchOptions.h b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGSearchOptions.h
new file mode 100644
index 00000000..8cd7de49
--- /dev/null
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AGSearchOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGSearchOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGSearchOptions_h
+#define AGSearchOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGSearchOptions) {
+    AGSearchOptions_0 = 0,
+    AGSearchOptions_1 = 1,
+};
+
+#endif /* Header_h */
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
index 2bec2681..2d97ccc3 100644
--- a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Headers/AttributeGraph-umbrella.h
@@ -8,12 +8,16 @@
 
 #include "AGAttribute.h"
 #include "AGAttributeFlags.h"
+#include "AGAttributeInfo.h"
+#include "AGAttributeType.h"
 #include "AGAttributeTypeFlags.h"
 #include "AGBase.h"
 #include "AGCompareValues.h"
 #include "AGComparisonMode.h"
 #include "AGDebugServer.h"
 #include "AGGraph.h"
+#include "AGInputOptions.h"
+#include "AGSearchOptions.h"
 #include "AGSubgraph.h"
 #include "AGSwiftMetadata.h"
 #include "AGTupleType.h"
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-macos.swiftinterface b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-macos.swiftinterface
index e01333e5..8a8f6bb7 100644
--- a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-macos.swiftinterface
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64-apple-macos.swiftinterface
@@ -13,14 +13,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -60,6 +66,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-macos.swiftinterface b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-macos.swiftinterface
index af2e8f29..d6eb6df1 100644
--- a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-macos.swiftinterface
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/arm64e-apple-macos.swiftinterface
@@ -13,14 +13,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -60,6 +66,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-macos.swiftinterface b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-macos.swiftinterface
index dcda9b41..b14e4bb5 100644
--- a/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-macos.swiftinterface
+++ b/AG/AttributeGraph.xcframework/macos-arm64e-arm64-x86_64/AttributeGraph.framework/Modules/AttributeGraph.swiftmodule/x86_64-apple-macos.swiftinterface
@@ -13,14 +13,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -60,6 +66,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/Sources/Headers/AGAttribute.h b/AG/Sources/Headers/AGAttribute.h
index 4c1a2c97..f30041d9 100644
--- a/AG/Sources/Headers/AGAttribute.h
+++ b/AG/Sources/Headers/AGAttribute.h
@@ -11,6 +11,9 @@
 
 #include "AGBase.h"
 #include "AGAttributeFlags.h"
+#include "AGInputOptions.h"
+#include "AGAttributeInfo.h"
+#include "AGTypeID.h"
 
 typedef uint32_t AGAttribute __attribute((swift_newtype(struct)));
 
@@ -19,22 +22,17 @@ AG_EXTERN_C_BEGIN
 AG_EXPORT
 const AGAttribute AGAttributeNil;
 
-AG_EXTERN_C_BEGIN
-AG_EXPORT
-const AGAttribute AGAttributeNil;
-AG_EXTERN_C_END
-
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
 AGAttribute AGGraphGetCurrentAttribute(void);
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, uint64_t offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
+AGAttribute AGGraphCreateOffsetAttribute(AGAttribute attribute, long offset) AG_SWIFT_NAME(AGAttribute.create(self:offset:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
-AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, uint64_t offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
+AGAttribute AGGraphCreateOffsetAttribute2(AGAttribute attribute, long offset, uint64_t size) AG_SWIFT_NAME(AGAttribute.create(self:offset:size:));
 
 AG_EXPORT
 AG_REFINED_FOR_SWIFT
@@ -44,6 +42,26 @@ AG_EXPORT
 AG_REFINED_FOR_SWIFT
 void AGGraphSetFlags(AGAttribute attribute, AGAttributeFlags flags) AG_SWIFT_NAME(setter:AGAttribute.flags(self:_:));
 
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphAddInput(AGAttribute attribute1, AGAttribute attribute2, AGInputOptions options, long token);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+const AGAttributeInfo AGGraphGetAttributeInfo(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphMutateAttribute(AGAttribute attribute, const AGTypeID type, bool invalidating/*, closure*/);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+AGAttribute AGGraphGetIndirectDependency(AGAttribute attribute);
+
+AG_EXPORT
+AG_REFINED_FOR_SWIFT
+void AGGraphSetIndirectDependency(AGAttribute attribute1, AGAttribute attribute2);
+
 AG_EXTERN_C_END
 
 #endif /* AGAttribute_h */
diff --git a/AG/Sources/Headers/AGAttributeInfo.h b/AG/Sources/Headers/AGAttributeInfo.h
new file mode 100644
index 00000000..390547a5
--- /dev/null
+++ b/AG/Sources/Headers/AGAttributeInfo.h
@@ -0,0 +1,23 @@
+//
+//  AGAttributeInfo.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeInfo_h
+#define AGAttributeInfo_h
+
+#include "AGBase.h"
+#include "AGAttributeType.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeInfo {
+    const AGAttributeType* type;
+    const void *body;
+} AGAttributeInfo;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeInfo_h */
diff --git a/AG/Sources/Headers/AGAttributeType.h b/AG/Sources/Headers/AGAttributeType.h
new file mode 100644
index 00000000..4229ac2c
--- /dev/null
+++ b/AG/Sources/Headers/AGAttributeType.h
@@ -0,0 +1,24 @@
+//
+//  AGAttributeType.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGAttributeType_h
+#define AGAttributeType_h
+
+#include "AGBase.h"
+#include "AGTypeID.h"
+
+AG_ASSUME_NONNULL_BEGIN
+
+typedef struct AGAttributeType {
+    AGTypeID typeID;
+    AGTypeID valueTypeID;
+    // TODO
+} AGAttributeType;
+
+AG_ASSUME_NONNULL_END
+
+#endif /* AGAttributeType_h */
diff --git a/AG/Sources/Headers/AGInputOptions.h b/AG/Sources/Headers/AGInputOptions.h
new file mode 100644
index 00000000..54abdc1e
--- /dev/null
+++ b/AG/Sources/Headers/AGInputOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGInputOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGInputOptions_h
+#define AGInputOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGInputOptions) {
+    AGInputOptions_0 = 0,
+    AGInputOptions_1 = 1,
+};
+
+#endif /* AGInputOptions_h */
diff --git a/AG/Sources/Headers/AGSearchOptions.h b/AG/Sources/Headers/AGSearchOptions.h
new file mode 100644
index 00000000..8cd7de49
--- /dev/null
+++ b/AG/Sources/Headers/AGSearchOptions.h
@@ -0,0 +1,18 @@
+//
+//  AGSearchOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AGSearchOptions_h
+#define AGSearchOptions_h
+
+#include "AGBase.h"
+
+typedef AG_OPTIONS(uint32_t, AGSearchOptions) {
+    AGSearchOptions_0 = 0,
+    AGSearchOptions_1 = 1,
+};
+
+#endif /* Header_h */
diff --git a/AG/Sources/Headers/AttributeGraph-umbrella.h b/AG/Sources/Headers/AttributeGraph-umbrella.h
index 2bec2681..2d97ccc3 100644
--- a/AG/Sources/Headers/AttributeGraph-umbrella.h
+++ b/AG/Sources/Headers/AttributeGraph-umbrella.h
@@ -8,12 +8,16 @@
 
 #include "AGAttribute.h"
 #include "AGAttributeFlags.h"
+#include "AGAttributeInfo.h"
+#include "AGAttributeType.h"
 #include "AGAttributeTypeFlags.h"
 #include "AGBase.h"
 #include "AGCompareValues.h"
 #include "AGComparisonMode.h"
 #include "AGDebugServer.h"
 #include "AGGraph.h"
+#include "AGInputOptions.h"
+#include "AGSearchOptions.h"
 #include "AGSubgraph.h"
 #include "AGSwiftMetadata.h"
 #include "AGTupleType.h"
diff --git a/AG/Sources/Modules/AttributeGraph.swiftmodule/template.swiftinterface b/AG/Sources/Modules/AttributeGraph.swiftmodule/template.swiftinterface
index 6f634d33..ad5bad53 100644
--- a/AG/Sources/Modules/AttributeGraph.swiftmodule/template.swiftinterface
+++ b/AG/Sources/Modules/AttributeGraph.swiftmodule/template.swiftinterface
@@ -9,14 +9,20 @@ import _StringProcessing
 // MARK: - AGAttribute
 
 extension AGAttribute {
-	@inlinable
+	public init<Value>(_ attribute: AttributeGraph.Attribute<Value>)
 	public func unsafeCast<Value>(to type: Value.Type) -> AttributeGraph.Attribute<Value>
-	@inlinable
 	public static var current: AGAttribute? { get }
-	@inlinable
 	public func unsafeOffset(at offset: Int) -> AGAttribute
-	@inlinable
 	public func setFlags(_ newFlags: AGAttributeFlags, mask: AGAttributeFlags)
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	public func addInput<Value>(_ attribute: AttributeGraph.Attribute<Value>, options: AGInputOptions, token: Int)
+	public func visitBody<Visitor: AttributeGraph.AttributeBodyVisitor>(_ visitor: inout Visitor);
+	public func mutateBody<Value>(as: Value.Type, invalidating: Swift.Bool, _ body: (inout Value) -> ())
+	public func breadthFirstSearch(options: AGSearchOptions, _: (AGAttribute) -> Swift.Bool) -> Swift.Bool
+	public var _bodyType: Any.Type { get }
+	public var _bodyPointer: UnsafeRawPointer { get }
+	public var valueType: Any.Type { get }
+	public var indirectDependency: AGAttribute? { get set }
 }
 
 extension AGAttribute: Swift.CustomStringConvertible {
@@ -56,6 +62,11 @@ extension AGAttribute: Swift.CustomStringConvertible {
     public func hash(into hasher: inout Swift.Hasher)
     public var hashValue: Swift.Int { get }
     public var value: Value { get set }
+
+	@inlinable
+	public func addInput(_ attribute: AGAttribute, options: AGInputOptions, token: Swift.Int)
+	@inlinable
+	public func addInput<V>(_ attribute: AttributeGraph.Attribute<V>, options: AGInputOptions, token: Int)
 }
 
 // MARK: - _AttributeBody
diff --git a/AG/reset.sh b/AG/reset.sh
new file mode 100755
index 00000000..3968c2d8
--- /dev/null
+++ b/AG/reset.sh
@@ -0,0 +1,20 @@
+#!/bin/zsh
+
+# A `realpath` alternative using the default C implementation.
+filepath() {
+  [[ $1 = /* ]] && echo "$1" || echo "$PWD/${1#./}"
+}
+
+AG_ROOT="$(dirname $(filepath $0))"
+xcframework_path="${AG_ROOT}/AttributeGraph.xcframework"
+framework_name=AttributeGraph.framework
+
+reset_framework() {
+    local frmework_name=$1
+    rm -rf ${xcframework_path}/${frmework_name}/${framework_name}/Headers
+    rm -rf ${xcframework_path}/${frmework_name}/${framework_name}/Modules
+}
+
+reset_framework ios-arm64-x86_64-simulator
+reset_framework ios-arm64-arm64e
+reset_framework macos-arm64e-arm64-x86_64
diff --git a/Sources/OpenGraph/Attribute/Attribute.swift b/Sources/OpenGraph/Attribute/Attribute.swift
index ae5ef89e..144b465b 100644
--- a/Sources/OpenGraph/Attribute/Attribute.swift
+++ b/Sources/OpenGraph/Attribute/Attribute.swift
@@ -2,7 +2,7 @@ import _OpenGraph
 
 @propertyWrapper
 public struct Attribute<Value> {
-    var identifier: OGAttribute
+    public var identifier: OGAttribute
     
     public init() {
         fatalError("TODO")
@@ -19,6 +19,16 @@ public struct Attribute<Value> {
         get { wrappedValue }
         set { fatalError("TODO") }
     }
+    
+    @inlinable
+    public func addInput(_ attribute: OGAttribute, options: OGInputOptions, token: Int) {
+        __OGGraphAddInput(self.identifier, attribute, options, token)
+    }
+    
+    @inlinable
+    public func addInput<V>(_ attribute: Attribute<V>, options: OGInputOptions, token: Int) {
+        addInput(attribute.identifier, options: options, token: token)
+    }
 }
 
 extension Attribute: Equatable {}
diff --git a/Sources/OpenGraph/Attribute/AttributeBodyVisitor.swift b/Sources/OpenGraph/Attribute/AttributeBodyVisitor.swift
index 7756d953..aa1d9801 100644
--- a/Sources/OpenGraph/Attribute/AttributeBodyVisitor.swift
+++ b/Sources/OpenGraph/Attribute/AttributeBodyVisitor.swift
@@ -1,9 +1,9 @@
 //
 //  AttributeBodyVisitor.swift
-//
+//  OpenGraph
 //
 //  Created by Kyle on 2024/2/16.
-//
+//  Status: WIP
 
 public protocol AttributeBodyVisitor {
     func visit<Body: _AttributeBody>(body: UnsafePointer<Body>)
diff --git a/Sources/OpenGraph/Attribute/External.swift b/Sources/OpenGraph/Attribute/External.swift
index c97ff2ef..5342dad2 100644
--- a/Sources/OpenGraph/Attribute/External.swift
+++ b/Sources/OpenGraph/Attribute/External.swift
@@ -1,6 +1,6 @@
 //
 //  External.swift
-//
+//  OpenGraph
 //
 //  Created by Kyle on 2024/2/16.
 //  Lastest Version: iOS 15.5
diff --git a/Sources/OpenGraph/Attribute/Focus.swift b/Sources/OpenGraph/Attribute/Focus.swift
index 70ddb6dc..57c73357 100644
--- a/Sources/OpenGraph/Attribute/Focus.swift
+++ b/Sources/OpenGraph/Attribute/Focus.swift
@@ -1,6 +1,6 @@
 //
 //  Focus.swift
-//
+//  OpenGraph
 //
 //  Created by Kyle on 2024/2/16.
 //  Lastest Version: iOS 15.5
diff --git a/Sources/OpenGraph/Attribute/OGExtension/OGAttribute.swift b/Sources/OpenGraph/Attribute/OGExtension/OGAttribute.swift
index baeb9dc0..a438fc05 100644
--- a/Sources/OpenGraph/Attribute/OGExtension/OGAttribute.swift
+++ b/Sources/OpenGraph/Attribute/OGExtension/OGAttribute.swift
@@ -1,33 +1,80 @@
 //
 //  OGAttribute.swift
-//
+//  OpenGraph
 //
 //  Created by Kyle on 2024/2/17.
-//
+//  Lastest Version: iOS 15.5
+//  Status: API complete
 
 import _OpenGraph
 
 extension OGAttribute {
-    @inlinable
-    public func unsafeCast<Value>(to type: Value.Type) -> Attribute<Value> {
+    public init<Value>(_ attribute: Attribute<Value>) {
+        self = attribute.identifier
+    }
+    
+    public func unsafeCast<Value>(to _: Value.Type) -> Attribute<Value> {
         fatalError("TODO")
     }
     
-    @inlinable
     public static var current: OGAttribute? {
         let current = __OGGraphGetCurrentAttribute()
         return current == .nil ? nil : current
     }
     
-    @inlinable
     public func unsafeOffset(at offset: Int) -> OGAttribute {
-        create(offset: UInt64(offset))
+        create(offset: offset)
     }
-    
-    @inlinable
+
     public func setFlags(_ newFlags: OGAttributeFlags, mask: OGAttributeFlags) {
         flags = flags.subtracting(mask).union(newFlags.intersection(mask))
     }
+
+    public func addInput(_ attribute: OGAttribute, options: OGInputOptions, token: Int) {
+        __OGGraphAddInput(self, attribute, options, token)
+    }
+
+    public func addInput(_ attribute: Attribute<some Any>, options: OGInputOptions, token: Int) {
+        addInput(attribute.identifier, options: options, token: token)
+    }
+    
+    // Question
+    public func visitBody(_ visitor: inout some AttributeBodyVisitor) {
+        let info = __OGGraphGetAttributeInfo(self)
+        let bodyType = info.type.advanced(by: 1).pointee.typeID.type as! _AttributeBody.Type
+        bodyType._visitBody(&visitor, info.body)
+    }
+
+    public func mutateBody<Value>(as type: Value.Type, invalidating: Bool, _: (inout Value) -> Void) {
+        // FIXME: pass body
+        __OGGraphMutateAttribute(self, OGTypeID(type), invalidating)
+    }
+    
+    public func breadthFirstSearch(options _: OGSearchOptions, _: (OGAttribute) -> Bool) -> Bool {
+        fatalError("TODO")
+    }
+    
+    public var _bodyType: Any.Type {
+        __OGGraphGetAttributeInfo(self).type.pointee.typeID.type
+    }
+
+    public var _bodyPointer: UnsafeRawPointer {
+        __OGGraphGetAttributeInfo(self).body
+    }
+    
+    public var valueType: Any.Type {
+        __OGGraphGetAttributeInfo(self).type.pointee.valueTypeID.type
+    }
+
+    public var indirectDependency: OGAttribute? {
+        get {
+            let indirectDependency = __OGGraphGetIndirectDependency(self)
+            return indirectDependency == .nil ? nil : indirectDependency
+        }
+        nonmutating set {
+            __OGGraphSetIndirectDependency(self, newValue ?? .nil)
+        }
+    }
 }
 
 // MARK: CustomStringConvertible
diff --git a/Sources/OpenGraph/Runtime/OGTypeID.swift b/Sources/OpenGraph/Runtime/OGTypeID.swift
index 00495c62..1048f0d4 100644
--- a/Sources/OpenGraph/Runtime/OGTypeID.swift
+++ b/Sources/OpenGraph/Runtime/OGTypeID.swift
@@ -25,16 +25,19 @@ public func OGTypeApplyFields2(
 ) -> Bool
 
 extension OGTypeID: Hashable, CustomStringConvertible {
+    @inlinable
     @inline(__always)
     public init(_ type: Any.Type) {
         self.init(rawValue: unsafeBitCast(type, to: UnsafePointer<OGSwiftMetadata>.self))
     }
     
+    @inlinable
     @inline(__always)
     public var type: Any.Type {
         unsafeBitCast(rawValue, to: Any.Type.self)
     }
     
+    @inlinable
     @inline(__always)
     public var description: String {
         #if canImport(ObjectiveC)
@@ -44,12 +47,16 @@ extension OGTypeID: Hashable, CustomStringConvertible {
         #endif
     }
     
+    @inlinable
+    @inline(__always)
     /* public */func forEachField(
         do body: (UnsafePointer<Int8>, Int, Any.Type) -> Void
     ) {
         OGTypeApplyFields(type, body: body)
     }
     
+    @inlinable
+    @inline(__always)
     public func forEachField(
         options: OGTypeApplyOptions,
         do body: (UnsafePointer<Int8>, Int, Any.Type) -> Bool
diff --git a/Sources/OpenGraphShims/GraphShims.swift b/Sources/OpenGraphShims/GraphShims.swift
index 64a75a79..9b8a1d3a 100644
--- a/Sources/OpenGraphShims/GraphShims.swift
+++ b/Sources/OpenGraphShims/GraphShims.swift
@@ -8,12 +8,22 @@
 #if OPENGRAPH_ATTRIBUTEGRAPH
 @_exported import AttributeGraph
 public typealias OGAttribute = AGAttribute
+public typealias OGAttributeFlags = AGAttributeFlags
+public typealias OGAttributeInfo = AGAttributeInfo
+public typealias OGAttributeType = AGAttributeType
+public typealias OGAttributeTypeFlags = AGAttributeTypeFlags
+public typealias OGComparisonMode = AGComparisonMode
+public typealias OGComparisonOptions = AGComparisonOptions
 public typealias OGDebugServer = AGDebugServer
 public typealias OGGraph = AGGraph
+public typealias OGGraphContext = AGGraphContext
+public typealias OGInputOptions = AGInputOptions
+public typealias OGSearchOptions = AGSearchOptions
 public typealias OGSubgraph = AGSubgraph
 public typealias OGSwiftMetadata = AGSwiftMetadata
 public typealias OGTupleType = AGTupleType
 public typealias OGTypeApplyOptions = AGTypeApplyOptions
+public typealias OGTypeKind = AGTypeKind
 public typealias OGTypeID = AGTypeID
 public typealias OGUniqueID = AGUniqueID
 #else
diff --git a/Sources/_OpenGraph/Attribute/AttributeType.cpp b/Sources/_OpenGraph/Attribute/AttributeType.cpp
new file mode 100644
index 00000000..91c8ede1
--- /dev/null
+++ b/Sources/_OpenGraph/Attribute/AttributeType.cpp
@@ -0,0 +1,8 @@
+//
+//  OGAttributeType.cpp
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#include "OGAttributeType.h"
diff --git a/Sources/_OpenGraph/Attribute/AttributeType.hpp b/Sources/_OpenGraph/Attribute/AttributeType.hpp
new file mode 100644
index 00000000..8deffb3b
--- /dev/null
+++ b/Sources/_OpenGraph/Attribute/AttributeType.hpp
@@ -0,0 +1,19 @@
+//
+//  AttributeType.hpp
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef AttributeType_hpp
+#define AttributeType_hpp
+
+#include "OGBase.h"
+#include "OGAttributeType.h"
+
+namespace OG {
+struct AttributeType {
+    OGAttributeType storage;
+};
+}
+#endif /* AttributeType_2_hpp */
diff --git a/Sources/_OpenGraph/Attribute/OGAttribute.cpp b/Sources/_OpenGraph/Attribute/OGAttribute.cpp
index 63a3f832..b3be2043 100644
--- a/Sources/_OpenGraph/Attribute/OGAttribute.cpp
+++ b/Sources/_OpenGraph/Attribute/OGAttribute.cpp
@@ -25,11 +25,11 @@ OGAttribute create_offset_attribute(OGAttribute attribute, uint64_t offset, std:
 }
 }
 
-OGAttribute OGGraphCreateOffsetAttribute(OGAttribute attribute, uint64_t offset) {
+OGAttribute OGGraphCreateOffsetAttribute(OGAttribute attribute, long offset) {
     return create_offset_attribute(attribute, offset, std::nullopt);
 }
 
-OGAttribute OGGraphCreateOffsetAttribute2(OGAttribute attribute, uint64_t offset, uint64_t size) {
+OGAttribute OGGraphCreateOffsetAttribute2(OGAttribute attribute, long offset, uint64_t size) {
     return create_offset_attribute(attribute, offset, std::optional(size));
 }
 
@@ -49,3 +49,33 @@ void OGGraphSetFlags(OGAttribute attribute, OGAttributeFlags flags) {
     }
     // TODO: data/table
 }
+
+void OGGraphAddInput(OGAttribute attribute1, OGAttribute attribute2, OGInputOptions options, long token) {
+    const OG::AttributeID id = OG::AttributeID(attribute1);
+    if (!id.isDirect()) {
+        OG::precondition_failure("non-direct attribute id: %u", id);
+    }
+    // TODO: data/table
+}
+
+const OGAttributeInfo OGGraphGetAttributeInfo(OGAttribute attribute) {
+    const OG::AttributeID id = OG::AttributeID(attribute);
+    if (!id.isDirect()) {
+        OG::precondition_failure("non-direct attribute id: %u", id);
+    }
+    // TODO
+    return { nullptr, nullptr };
+}
+
+void OGGraphMutateAttribute(OGAttribute attribute, const OGTypeID type, bool invalidating) {
+    // TODO
+}
+
+OGAttribute OGGraphGetIndirectDependency(OGAttribute attribute) {
+    // TODO
+    return OGAttributeNil;
+}
+
+void OGGraphSetIndirectDependency(OGAttribute attribute1, OGAttribute attribute2) {
+    // TODO
+}
diff --git a/Sources/_OpenGraph/Attribute/OGAttribute.h b/Sources/_OpenGraph/Attribute/OGAttribute.h
index cb040d13..6798707b 100644
--- a/Sources/_OpenGraph/Attribute/OGAttribute.h
+++ b/Sources/_OpenGraph/Attribute/OGAttribute.h
@@ -10,6 +10,9 @@
 
 #include "OGBase.h"
 #include "OGAttributeFlags.h"
+#include "OGInputOptions.h"
+#include "OGAttributeInfo.h"
+#include "OGTypeID.h"
 
 typedef uint32_t OGAttribute __attribute((swift_newtype(struct)));
 
@@ -24,11 +27,11 @@ OGAttribute OGGraphGetCurrentAttribute(void);
 
 OG_EXPORT
 OG_REFINED_FOR_SWIFT
-OGAttribute OGGraphCreateOffsetAttribute(OGAttribute attribute, uint64_t offset) OG_SWIFT_NAME(OGAttribute.create(self:offset:));
+OGAttribute OGGraphCreateOffsetAttribute(OGAttribute attribute, long offset) OG_SWIFT_NAME(OGAttribute.create(self:offset:));
 
 OG_EXPORT
 OG_REFINED_FOR_SWIFT
-OGAttribute OGGraphCreateOffsetAttribute2(OGAttribute attribute, uint64_t offset, uint64_t size) OG_SWIFT_NAME(OGAttribute.create(self:offset:size:));
+OGAttribute OGGraphCreateOffsetAttribute2(OGAttribute attribute, long offset, uint64_t size) OG_SWIFT_NAME(OGAttribute.create(self:offset:size:));
 
 OG_EXPORT
 OG_REFINED_FOR_SWIFT
@@ -38,6 +41,26 @@ OG_EXPORT
 OG_REFINED_FOR_SWIFT
 void OGGraphSetFlags(OGAttribute attribute, OGAttributeFlags flags) OG_SWIFT_NAME(setter:OGAttribute.flags(self:_:));
 
+OG_EXPORT
+OG_REFINED_FOR_SWIFT
+void OGGraphAddInput(OGAttribute attribute1, OGAttribute attribute2, OGInputOptions options, long token);
+
+OG_EXPORT
+OG_REFINED_FOR_SWIFT
+const OGAttributeInfo OGGraphGetAttributeInfo(OGAttribute attribute);
+
+OG_EXPORT
+OG_REFINED_FOR_SWIFT
+void OGGraphMutateAttribute(OGAttribute attribute, const OGTypeID type, bool invalidating/*, closure*/);
+
+OG_EXPORT
+OG_REFINED_FOR_SWIFT
+OGAttribute OGGraphGetIndirectDependency(OGAttribute attribute);
+
+OG_EXPORT
+OG_REFINED_FOR_SWIFT
+void OGGraphSetIndirectDependency(OGAttribute attribute1, OGAttribute attribute2);
+
 OG_EXTERN_C_END
 
 #endif /* OGAttribute_h */
diff --git a/Sources/_OpenGraph/Attribute/OGAttributeInfo.h b/Sources/_OpenGraph/Attribute/OGAttributeInfo.h
new file mode 100644
index 00000000..a9994df5
--- /dev/null
+++ b/Sources/_OpenGraph/Attribute/OGAttributeInfo.h
@@ -0,0 +1,23 @@
+//
+//  OGAttributeInfo.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef OGAttributeInfo_h
+#define OGAttributeInfo_h
+
+#include "OGBase.h"
+#include "OGAttributeType.h"
+
+OG_ASSUME_NONNULL_BEGIN
+
+typedef struct OGAttributeInfo {
+    const OGAttributeType* type;
+    const void *body;
+} OGAttributeInfo;
+
+OG_ASSUME_NONNULL_END
+
+#endif /* OGAttributeInfo_h */
diff --git a/Sources/_OpenGraph/Attribute/OGAttributeType.h b/Sources/_OpenGraph/Attribute/OGAttributeType.h
new file mode 100644
index 00000000..73fbfe68
--- /dev/null
+++ b/Sources/_OpenGraph/Attribute/OGAttributeType.h
@@ -0,0 +1,24 @@
+//
+//  OGAttributeType.h
+//  
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef OGAttributeType_h
+#define OGAttributeType_h
+
+#include "OGBase.h"
+#include "OGTypeID.h"
+
+OG_ASSUME_NONNULL_BEGIN
+
+typedef struct OGAttributeType {
+    OGTypeID typeID;
+    OGTypeID valueTypeID;
+    // TODO
+} OGAttributeType;
+
+OG_ASSUME_NONNULL_END
+
+#endif /* OGAttributeType_h */
diff --git a/Sources/_OpenGraph/Attribute/OGInputOptions.h b/Sources/_OpenGraph/Attribute/OGInputOptions.h
new file mode 100644
index 00000000..477d263c
--- /dev/null
+++ b/Sources/_OpenGraph/Attribute/OGInputOptions.h
@@ -0,0 +1,18 @@
+//
+//  OGInputOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef OGInputOptions_h
+#define OGInputOptions_h
+
+#include "OGBase.h"
+
+typedef OG_OPTIONS(uint32_t, OGInputOptions) {
+    OGInputOptions_0 = 0,
+    OGInputOptions_1 = 1,
+};
+
+#endif /* OGInputOptions_h */
diff --git a/Sources/_OpenGraph/Attribute/OGSearchOptions.h b/Sources/_OpenGraph/Attribute/OGSearchOptions.h
new file mode 100644
index 00000000..42142e63
--- /dev/null
+++ b/Sources/_OpenGraph/Attribute/OGSearchOptions.h
@@ -0,0 +1,18 @@
+//
+//  OGSearchOptions.h
+//
+//
+//  Created by Kyle on 2024/2/17.
+//
+
+#ifndef OGSearchOptions_h
+#define OGSearchOptions_h
+
+#include "OGBase.h"
+
+typedef OG_OPTIONS(uint32_t, OGSearchOptions) {
+    OGSearchOptions_0 = 0,
+    OGSearchOptions_1 = 1,
+};
+
+#endif /* Header_h */
diff --git a/Sources/_OpenGraph/Debug/og-debug-server.mm b/Sources/_OpenGraph/Debug/og-debug-server.mm
index f2dde12f..4458b917 100644
--- a/Sources/_OpenGraph/Debug/og-debug-server.mm
+++ b/Sources/_OpenGraph/Debug/og-debug-server.mm
@@ -10,8 +10,8 @@
 
 #include "../Util/log.hpp"
 #include "../Util/assert.hpp"
-#include "../Graph/graph-description.hpp"
-#include "../Graph/graph.hpp"
+#include "../Graph/GraphDescription.hpp"
+#include "../Graph/Graph.hpp"
 
 #include <iostream>
 #include <sys/socket.h>
diff --git a/Sources/_OpenGraph/Graph/graph.cpp b/Sources/_OpenGraph/Graph/Graph.cpp
similarity index 73%
rename from Sources/_OpenGraph/Graph/graph.cpp
rename to Sources/_OpenGraph/Graph/Graph.cpp
index 6ead831d..e55f0637 100644
--- a/Sources/_OpenGraph/Graph/graph.cpp
+++ b/Sources/_OpenGraph/Graph/Graph.cpp
@@ -1,10 +1,10 @@
 //
-//  graph.cpp
+//  Graph.cpp
 //  
 //
 //  Created by Kyle on 2024/1/18.
 //
 
-#include "graph.hpp"
+#include "Graph.hpp"
 
 pthread_key_t OG::Graph::_current_update_key;
diff --git a/Sources/_OpenGraph/Graph/graph.hpp b/Sources/_OpenGraph/Graph/Graph.hpp
similarity index 95%
rename from Sources/_OpenGraph/Graph/graph.hpp
rename to Sources/_OpenGraph/Graph/Graph.hpp
index 424447a6..155ee882 100644
--- a/Sources/_OpenGraph/Graph/graph.hpp
+++ b/Sources/_OpenGraph/Graph/Graph.hpp
@@ -1,12 +1,12 @@
 //
-//  graph.hpp
+//  Graph.hpp
 //
 //
 //  Created by Kyle on 2024/1/18.
 //
 
-#ifndef graph_hpp
-#define graph_hpp
+#ifndef Graph_hpp
+#define Graph_hpp
 
 #include "OGBase.h"
 #include "OGGraph.h"
@@ -79,4 +79,4 @@ struct OGGraphContextStorage {
     OG::Graph::Context context;
 };
 
-#endif /* graph_hpp */
+#endif /* Graph_hpp */
diff --git a/Sources/_OpenGraph/Graph/graph-context.cpp b/Sources/_OpenGraph/Graph/GraphContext.cpp
similarity index 90%
rename from Sources/_OpenGraph/Graph/graph-context.cpp
rename to Sources/_OpenGraph/Graph/GraphContext.cpp
index c2311be9..f1f7fe45 100644
--- a/Sources/_OpenGraph/Graph/graph-context.cpp
+++ b/Sources/_OpenGraph/Graph/GraphContext.cpp
@@ -1,11 +1,11 @@
 //
-//  graph-context.cpp
-//  
+//  GraphContext.cpp
+//
 //
 //  Created by Kyle on 2024/2/16.
 //
 
-#include "graph.hpp"
+#include "Graph.hpp"
 #include "OGGraph.h"
 #include "../Util/assert.hpp"
 
diff --git a/Sources/_OpenGraph/Graph/graph-description.hpp b/Sources/_OpenGraph/Graph/GraphDescription.hpp
similarity index 59%
rename from Sources/_OpenGraph/Graph/graph-description.hpp
rename to Sources/_OpenGraph/Graph/GraphDescription.hpp
index 59c79d76..303c5d11 100644
--- a/Sources/_OpenGraph/Graph/graph-description.hpp
+++ b/Sources/_OpenGraph/Graph/GraphDescription.hpp
@@ -1,12 +1,12 @@
 //
-//  graph-description.hpp
+//  GraphDescription.hpp
 //
 //
 //  Created by Kyle on 2024/1/21.
 //
 
-#ifndef graph_description_hpp
-#define graph_description_hpp
+#ifndef GraphDescription_hpp
+#define GraphDescription_hpp
 
 #include "OGBase.h"
 
@@ -17,4 +17,4 @@ CFStringRef OGDescriptionFormat;
 OG_EXTERN_C_END
 #endif
 
-#endif /* graph_description_hpp */
+#endif /* GraphDescription_hpp */
diff --git a/Sources/_OpenGraph/Graph/graph-description.mm b/Sources/_OpenGraph/Graph/GraphDescription.mm
similarity index 91%
rename from Sources/_OpenGraph/Graph/graph-description.mm
rename to Sources/_OpenGraph/Graph/GraphDescription.mm
index ebe18c5c..3c14e234 100644
--- a/Sources/_OpenGraph/Graph/graph-description.mm
+++ b/Sources/_OpenGraph/Graph/GraphDescription.mm
@@ -1,13 +1,13 @@
 //
-//  graph-description.cpp
+//  GraphDescription.mm
 //
 //
 //  Created by Kyle on 2024/1/21.
 //
 
-#include "graph-description.hpp"
+#include "GraphDescription.hpp"
 #include "OGGraph.h"
-#include "graph.hpp"
+#include "Graph.hpp"
 #include "../Util/assert.hpp"
 
 #if OG_OBJC_FOUNDATION
diff --git a/Sources/_OpenGraph/Graph/OGGraph.cpp b/Sources/_OpenGraph/Graph/OGGraph.cpp
index c260cd2d..02cb1a1d 100644
--- a/Sources/_OpenGraph/Graph/OGGraph.cpp
+++ b/Sources/_OpenGraph/Graph/OGGraph.cpp
@@ -6,7 +6,7 @@
 //
 
 #include "OGGraph.h"
-#include "graph.hpp"
+#include "Graph.hpp"
 #include "../Util/assert.hpp"
 
 OGGraphRef OGGraphCreate() {
diff --git a/Sources/_OpenGraph/Graph/OGSubgraph.cpp b/Sources/_OpenGraph/Graph/OGSubgraph.cpp
index 3ff7d912..a12e876e 100644
--- a/Sources/_OpenGraph/Graph/OGSubgraph.cpp
+++ b/Sources/_OpenGraph/Graph/OGSubgraph.cpp
@@ -7,7 +7,7 @@
 
 #include "OGSubgraph.h"
 #include "OGGraph.h"
-#include "subgraph.hpp"
+#include "Subgraph.hpp"
 #include "../Util/assert.hpp"
 #include <pthread.h>
 #include "OGGraphContext.h"
diff --git a/Sources/_OpenGraph/Graph/subgraph.cpp b/Sources/_OpenGraph/Graph/Subgraph.cpp
similarity index 92%
rename from Sources/_OpenGraph/Graph/subgraph.cpp
rename to Sources/_OpenGraph/Graph/Subgraph.cpp
index 16a0f25b..87476aaa 100644
--- a/Sources/_OpenGraph/Graph/subgraph.cpp
+++ b/Sources/_OpenGraph/Graph/Subgraph.cpp
@@ -1,11 +1,11 @@
 //
-//  subgraph.cpp
+//  Subgraph.cpp
 //  
 //
 //  Created by Kyle on 2024/2/15.
 //
 
-#include "subgraph.hpp"
+#include "Subgraph.hpp"
 #include "OGSubgraph.h"
 
 pthread_key_t OG::Subgraph::_current_subgraph_key;
diff --git a/Sources/_OpenGraph/Graph/subgraph.hpp b/Sources/_OpenGraph/Graph/Subgraph.hpp
similarity index 94%
rename from Sources/_OpenGraph/Graph/subgraph.hpp
rename to Sources/_OpenGraph/Graph/Subgraph.hpp
index c36c9f92..27ace20d 100644
--- a/Sources/_OpenGraph/Graph/subgraph.hpp
+++ b/Sources/_OpenGraph/Graph/Subgraph.hpp
@@ -1,16 +1,16 @@
 //
-//  subgraph.hpp
-//  
+//  Subgraph.hpp
+//
 //
 //  Created by Kyle on 2024/2/15.
 //
 
-#ifndef subgraph_hpp
-#define subgraph_hpp
+#ifndef Subgraph_hpp
+#define Subgraph_hpp
 
 #include "OGBase.h"
 #include "../Attribute/AttributeID.hpp"
-#include "graph.hpp"
+#include "Graph.hpp"
 #include <pthread.h>
 
 typedef struct OG_BRIDGED_TYPE(id) OGSubgraphStorage * OGSubgraphRef;
@@ -88,4 +88,4 @@ class SubgraphObject final {
 };
 }
 
-#endif /* subgraph_hpp */
+#endif /* Subgraph_hpp */
diff --git a/Sources/_OpenGraph/include/OGAttributeInfo.h b/Sources/_OpenGraph/include/OGAttributeInfo.h
new file mode 120000
index 00000000..e141ee8a
--- /dev/null
+++ b/Sources/_OpenGraph/include/OGAttributeInfo.h
@@ -0,0 +1 @@
+../Attribute/OGAttributeInfo.h
\ No newline at end of file
diff --git a/Sources/_OpenGraph/include/OGAttributeType.h b/Sources/_OpenGraph/include/OGAttributeType.h
new file mode 120000
index 00000000..a6a7b2e0
--- /dev/null
+++ b/Sources/_OpenGraph/include/OGAttributeType.h
@@ -0,0 +1 @@
+../Attribute/OGAttributeType.h
\ No newline at end of file
diff --git a/Sources/_OpenGraph/include/OGInputOptions.h b/Sources/_OpenGraph/include/OGInputOptions.h
new file mode 120000
index 00000000..6c0f1710
--- /dev/null
+++ b/Sources/_OpenGraph/include/OGInputOptions.h
@@ -0,0 +1 @@
+../Attribute/OGInputOptions.h
\ No newline at end of file
diff --git a/Sources/_OpenGraph/include/OGSearchOptions.h b/Sources/_OpenGraph/include/OGSearchOptions.h
new file mode 120000
index 00000000..010d47b4
--- /dev/null
+++ b/Sources/_OpenGraph/include/OGSearchOptions.h
@@ -0,0 +1 @@
+../Attribute/OGSearchOptions.h
\ No newline at end of file
diff --git a/Sources/_OpenGraph/include/_OGGraph.h b/Sources/_OpenGraph/include/_OGGraph.h
index 2b529fc5..2cf594ca 100644
--- a/Sources/_OpenGraph/include/_OGGraph.h
+++ b/Sources/_OpenGraph/include/_OGGraph.h
@@ -10,6 +10,8 @@
 
 #include "OGAttribute.h"
 #include "OGAttributeFlags.h"
+#include "OGAttributeInfo.h"
+#include "OGAttributeType.h"
 #include "OGAttributeTypeFlags.h"
 #include "OGBase.h"
 #include "OGCompareValues.h"
@@ -17,6 +19,8 @@
 #include "OGDebugServer.h"
 #include "OGGraph.h"
 #include "OGGraphContext.h"
+#include "OGInputOptions.h"
+#include "OGSearchOptions.h"
 #include "OGSubgraph.h"
 #include "OGSwiftMetadata.h"
 #include "OGTupleType.h"
diff --git a/Status.md b/Status.md
index 79f196b3..58d69bc4 100644
--- a/Status.md
+++ b/Status.md
@@ -8,6 +8,10 @@ Only have an empty namespace used as placeholder type in other implementation.
 
 Some interface is implemented while some is not.
 
+## API Complete
+
+All interface is added while some implementation is empty.
+
 ## Blocked
 
 Most implementation is complete.
diff --git a/Tests/OpenGraphCompatibilityTests/Attribute/OGExtension/OGAttributeTests.swift b/Tests/OpenGraphCompatibilityTests/Attribute/OGExtension/OGAttributeTests.swift
index 87adde64..83be0407 100644
--- a/Tests/OpenGraphCompatibilityTests/Attribute/OGExtension/OGAttributeTests.swift
+++ b/Tests/OpenGraphCompatibilityTests/Attribute/OGExtension/OGAttributeTests.swift
@@ -40,5 +40,17 @@ final class OGAttributeTests: XCTestCase {
     
     // TODO: Add OGAttribute init
     func testSetFlags() throws {}
+    
+    func testVisitBody() {
+        // FIXME: attribute is invalid here.
+//        struct Visitor: AttributeBodyVisitor {
+//            func visit<Body>(body: UnsafePointer<Body>) where Body : _AttributeBody {
+//                print("Visit")
+//            }
+//        }
+//        let attribute = OGAttribute.nil
+//        var visitor = Visitor()
+//        attribute.visitBody(&visitor)
+    }
     #endif
 }
diff --git a/Tests/OpenGraphCompatibilityTests/Graph/GraphTests.swift b/Tests/OpenGraphCompatibilityTests/Graph/GraphTests.swift
index 6c8aaff4..f9018dd0 100644
--- a/Tests/OpenGraphCompatibilityTests/Graph/GraphTests.swift
+++ b/Tests/OpenGraphCompatibilityTests/Graph/GraphTests.swift
@@ -27,7 +27,11 @@ final class GraphTests: XCTestCase {
         }
         let name = "empty_graph.json"
         name.withCString { OGGraph.archiveJSON(name: $0) }
-        let url = URL(filePath: NSTemporaryDirectory().appending(name))
+        let url = if #available(macOS 13.0, iOS 16.0, tvOS 16.0, watchOS 9.0, *) {
+            URL(filePath: NSTemporaryDirectory().appending(name))
+        } else {
+            URL(fileURLWithPath: NSTemporaryDirectory().appending(name))
+        }
         let data = try Data(contentsOf: url)
         let graphs = try JSONDecoder().decode(Graphs.self, from: data)
         XCTAssertEqual(graphs.version, 2)
diff --git a/Tests/OpenGraphCompatibilityTests/GraphShims.swift b/Tests/OpenGraphCompatibilityTests/GraphShims.swift
index 9a569196..191da20c 100644
--- a/Tests/OpenGraphCompatibilityTests/GraphShims.swift
+++ b/Tests/OpenGraphCompatibilityTests/GraphShims.swift
@@ -8,12 +8,22 @@
 #if OPENGRAPH_COMPATIBILITY_TEST
 @_exported import AttributeGraph
 public typealias OGAttribute = AGAttribute
+public typealias OGAttributeFlags = AGAttributeFlags
+public typealias OGAttributeInfo = AGAttributeInfo
+public typealias OGAttributeType = AGAttributeType
+public typealias OGAttributeTypeFlags = AGAttributeTypeFlags
+public typealias OGComparisonMode = AGComparisonMode
+public typealias OGComparisonOptions = AGComparisonOptions
 public typealias OGDebugServer = AGDebugServer
 public typealias OGGraph = AGGraph
+public typealias OGGraphContext = AGGraphContext
+public typealias OGInputOptions = AGInputOptions
+public typealias OGSearchOptions = AGSearchOptions
 public typealias OGSubgraph = AGSubgraph
 public typealias OGSwiftMetadata = AGSwiftMetadata
 public typealias OGTupleType = AGTupleType
 public typealias OGTypeApplyOptions = AGTypeApplyOptions
+public typealias OGTypeKind = AGTypeKind
 public typealias OGTypeID = AGTypeID
 public typealias OGUniqueID = AGUniqueID
 #else