diff --git a/Demo.playground/Pages/Advanced.xcplaygroundpage/Contents.swift b/Demo.playground/Pages/Advanced.xcplaygroundpage/Contents.swift
index 5e6ae6a..6de61c7 100644
--- a/Demo.playground/Pages/Advanced.xcplaygroundpage/Contents.swift
+++ b/Demo.playground/Pages/Advanced.xcplaygroundpage/Contents.swift
@@ -1,5 +1,7 @@
 //: [Previous](@previous)
 
+import PlaygroundSupport
+
 import Foundation
 
 import APIWrapper
@@ -36,7 +38,6 @@ extension API {
 enum AdvancedAPI {
     /// Finally, the new initialization method declared above is called on
     /// the property wrapper to complete the interface definition.
-    
     @GET("/api", verification: .normal)
     static var testAPI: APIParameterBuilder<()>? = nil
 }
diff --git a/Demo.playground/Pages/Basic.xcplaygroundpage/Contents.swift b/Demo.playground/Pages/Basic.xcplaygroundpage/Contents.swift
index 0a03fa5..22a7926 100644
--- a/Demo.playground/Pages/Basic.xcplaygroundpage/Contents.swift
+++ b/Demo.playground/Pages/Basic.xcplaygroundpage/Contents.swift
@@ -1,3 +1,5 @@
+import PlaygroundSupport
+
 import Foundation
 
 import APIWrapper
diff --git a/Demo.playground/Pages/Combine.xcplaygroundpage/Contents.swift b/Demo.playground/Pages/Combine.xcplaygroundpage/Contents.swift
index be75468..e493760 100644
--- a/Demo.playground/Pages/Combine.xcplaygroundpage/Contents.swift
+++ b/Demo.playground/Pages/Combine.xcplaygroundpage/Contents.swift
@@ -1,8 +1,9 @@
 //: [Previous](@previous)
 
-import Foundation
+import PlaygroundSupport
 
 import Combine
+import Foundation
 import ObjectiveC
 
 import APIWrapper
diff --git a/Demo.playground/Sources/API+Request.swift b/Demo.playground/Sources/API+Request.swift
index aa66f6b..a139f47 100644
--- a/Demo.playground/Sources/API+Request.swift
+++ b/Demo.playground/Sources/API+Request.swift
@@ -75,7 +75,7 @@ private extension API {
         }
         
         let (data, response) = try await URLSession.shared.data(for: request)
-        print("✅ \(String(describing: response.url?.absoluteString)) End of request")
+        print("✅ \(response.url?.absoluteString ?? "nil") End of request")
         
         return data
     }
diff --git a/README.md b/README.md
index fead957..fb4ecde 100644
--- a/README.md
+++ b/README.md
@@ -40,8 +40,8 @@ static var tupleParamAPI: APIParameterBuilder<(id: Int, name: String?)>? = {
 @POST("/post")
 static var postWithModel: APIParameterBuilder<Arg>? = {
     // You can have your model follow the `APIParameterConvertible` protocol,
-    // or use `AnyAPIHashableParameter` to wrap your model in an outer layer.
-    AnyAPIHashableParameter($0)
+    // or use `AnyAPIParameter` to wrap your model in an outer layer.
+    AnyAPIParameter($0)
 }
 ```
 
diff --git a/README_CN.md b/README_CN.md
index fbc9b0a..191bfd6 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -36,8 +36,8 @@ static var tupleParamAPI: APIParameterBuilder<(id: Int, name: String?)>? = {
 
 @POST("/post")
 static var postWithModel: APIParameterBuilder<Arg>? = {
-    // 您可以让您的模型遵循 `APIParameterConvertible` 协议，或者使用 `AnyAPIHashableParameter` 在外面包裹一层。
-    AnyAPIHashableParameter($0)
+    // 您可以让您的模型遵循 `APIParameterConvertible` 协议，或者使用 `AnyAPIParameter` 在外面包裹一层。
+    AnyAPIParameter($0)
 }
 ```
 
diff --git a/RaAPIWrapper.podspec b/RaAPIWrapper.podspec
index 98b8e0b..a48856d 100755
--- a/RaAPIWrapper.podspec
+++ b/RaAPIWrapper.podspec
@@ -5,7 +5,7 @@ Pod::Spec.new do |s|
   
   s.name = 'RaAPIWrapper'
   
-  s.version = '1.0.1'
+  s.version = '1.0.2'
   
   s.summary = 'Makes it easier to define a network request.'
   
diff --git a/Sources/Core/RequestInfo/APIParameterConvertible.swift b/Sources/Core/RequestInfo/APIParameterConvertible.swift
index 8f7102b..9c2922b 100644
--- a/Sources/Core/RequestInfo/APIParameterConvertible.swift
+++ b/Sources/Core/RequestInfo/APIParameterConvertible.swift
@@ -1,5 +1,5 @@
 //
-//  APIParameters.swift
+//  APIParameterConvertible.swift
 //  RaAPIWrapper
 //
 //  Created by Rakuyo on 2022/8/25.
@@ -8,9 +8,6 @@
 
 import Foundation
 
-/// Used to constrain what types can be used as api parameters.
-public typealias APIParametrizable = AnyAPIParameter.Input
-
 /// Means that the type can be converted to an interface parameter for requesting an api.
 public protocol APIParameterConvertible {
     /// Converts the target to an Encodable-compliant type.
@@ -41,6 +38,10 @@ extension Double: APIParameterConvertible { }
 
 extension Bool: APIParameterConvertible { }
 
+// MARK: - Data
+
+extension Data: APIParameterConvertible { }
+
 // MARK: - Array
 
 extension Array: APIParameterConvertible {
diff --git a/Sources/Core/RequestInfo/APIParametrizable.swift b/Sources/Core/RequestInfo/APIParametrizable.swift
new file mode 100644
index 0000000..45015bb
--- /dev/null
+++ b/Sources/Core/RequestInfo/APIParametrizable.swift
@@ -0,0 +1,12 @@
+//
+//  APIParametrizable.swift
+//  RaAPIWrapper
+//
+//  Created by Rakuyo on 2023/01/13.
+//  Copyright © 2022 Rakuyo. All rights reserved.
+//
+
+import Foundation
+
+/// Used to constrain what types can be used as api parameters.
+public typealias APIParametrizable = AnyAPIHashableParameter.Input
diff --git a/Sources/Core/RequestInfo/AnyAPIHashable/AnyAPIHashableParameter.swift b/Sources/Core/RequestInfo/AnyAPIHashable/AnyAPIHashableParameter.swift
index 3aed0f0..2926d68 100644
--- a/Sources/Core/RequestInfo/AnyAPIHashable/AnyAPIHashableParameter.swift
+++ b/Sources/Core/RequestInfo/AnyAPIHashable/AnyAPIHashableParameter.swift
@@ -8,9 +8,6 @@
 
 import Foundation
 
-/// Represents an arbitrary api parameter.
-public typealias AnyAPIParameter = AnyAPIHashableParameter
-
 /// Make `Encodable` follow `Hashable` protocol.
 public struct AnyAPIHashableParameter: AnyAPIHashable {
     public typealias Value = Encodable
diff --git a/Sources/Core/RequestInfo/AnyAPIParameter.swift b/Sources/Core/RequestInfo/AnyAPIParameter.swift
new file mode 100644
index 0000000..8da712f
--- /dev/null
+++ b/Sources/Core/RequestInfo/AnyAPIParameter.swift
@@ -0,0 +1,12 @@
+//
+//  AnyAPIParameter.swift
+//  RaAPIWrapper
+//
+//  Created by Rakuyo on 2023/01/13.
+//  Copyright © 2022 Rakuyo. All rights reserved.
+//
+
+import Foundation
+
+/// Represents an arbitrary api parameter.
+public typealias AnyAPIParameter = AnyAPIHashableParameter
diff --git a/Tests/AvailabilityTests.swift b/Tests/AvailabilityTest.swift
similarity index 68%
rename from Tests/AvailabilityTests.swift
rename to Tests/AvailabilityTest.swift
index 1459b01..33615b0 100644
--- a/Tests/AvailabilityTests.swift
+++ b/Tests/AvailabilityTest.swift
@@ -1,5 +1,5 @@
 //
-//  AvailabilityTests.swift
+//  AvailabilityTest.swift
 //  RaAPIWrapper
 //
 //  Created by Rakuyo on 2022/8/26.
@@ -14,6 +14,7 @@ final class AvailabilityTests: XCTestCase {
         let param: (id: Int, name: String?) = (1, nil)
         let info = TestAPI.$tupleParamAPI.createRequestInfo(param)
         
+        // Verify that `nil` is filtered out in `info.parameters`
         XCTAssertEqual(info.parameters, packToParameters(["id": 1]))
         XCTAssertNotEqual(info.parameters, packToParameters(["id": 1, "name": Optional.none]))
         
@@ -22,7 +23,7 @@ final class AvailabilityTests: XCTestCase {
         XCTAssertNil(info.specialBaseURL)
     }
     
-    private func packToParameters(_ value: [String: Optional<Int>]) -> AnyAPIParameter {
+    private func packToParameters(_ value: [String: Int?]) -> AnyAPIParameter {
         return .init(value.mapValues { AnyAPIParameter($0) })
     }
 }
@@ -34,4 +35,14 @@ fileprivate struct TestAPI {
     static var tupleParamAPI: APIParameterBuilder<(id: Int, name: String?)>? = {
         ["id": $0.id, "name": $0.name] as [String: Any?]
     }
+    
+    @POST(Self.path)
+    static var test1API: APIParameterBuilder<(id: Int, name: String)>? = {
+        ["id": $0.id, "name": $0.name]
+    }
+    
+    @POST(Self.path)
+    static var test2API: APIParameterBuilder<(id: String, name: String)>? = {
+        ["id": $0.id, "name": $0.name]
+    }
 }
diff --git a/Tests/ExtensibilityTests.swift b/Tests/ExtensibilityTest.swift
similarity index 96%
rename from Tests/ExtensibilityTests.swift
rename to Tests/ExtensibilityTest.swift
index 92b05c7..39209d2 100644
--- a/Tests/ExtensibilityTests.swift
+++ b/Tests/ExtensibilityTest.swift
@@ -1,5 +1,5 @@
 //
-//  ExtensibilityTests.swift
+//  ExtensibilityTest.swift
 //  RaAPIWrapper
 //
 //  Created by Rakuyo on 2022/12/15.