diff --git a/Sources/DiscogsService/Internal/Errors/InputValidationError.swift b/Sources/DiscogsService/Internal/Errors/InputValidationError.swift
index 0254295e2..e7b63fce4 100644
--- a/Sources/DiscogsService/Internal/Errors/InputValidationError.swift
+++ b/Sources/DiscogsService/Internal/Errors/InputValidationError.swift
@@ -24,8 +24,10 @@ enum InputValidationError: Error {
     case inputNotConsumerKey
     /// An input does not comply with the consumer secret requirements.
     case inputNotConsumerSecret
-    /// An input does not comply with the semantic versioning requirements.
+    /// An input is not a semantic version.
     case inputNotSemanticVersion
+    /// An input is not a URL.
+    case inputNotURL
     /// An input does not comply with the user token requirements.
     case inputNotUserToken
 }
diff --git a/Sources/DiscogsService/Internal/Validation Rules/URLValidationRule.swift b/Sources/DiscogsService/Internal/Validation Rules/URLValidationRule.swift
index 5db2d474e..6726fecd5 100644
--- a/Sources/DiscogsService/Internal/Validation Rules/URLValidationRule.swift	
+++ b/Sources/DiscogsService/Internal/Validation Rules/URLValidationRule.swift	
@@ -1,8 +1,83 @@
+// ===----------------------------------------------------------------------===
 //
-//  File.swift
-//  discogs-service
+// This source file is part of the DiscogsService open source project
 //
-//  Created by Javier Cicchelli on 13/10/2025.
+// Copyright (c) 2025 Röck+Cöde VoF. and the DiscogsService project authors
+// Licensed under Apache license v2.0
 //
+// See LICENSE for license information
+// See CONTRIBUTORS for the list of DiscogsService project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+// ===----------------------------------------------------------------------===
 
-import Foundation
+/// A validation rule type that checks whether an input is a URL or not.
+///
+/// This validation rule doesn't necessarily follow the [RFC 3986](https://www.rfc-editor.org/rfc/rfc3986) standard.
+/// Thus it doesn't implement a complex regular expression pattern such as [this one](https://rgxdb.com/r/5JXUI5A2).
+/// Instead this validation implements a regular expression sufficient enough to satisfy the requirements for a [user agent definition](https://www.discogs.com/developers/#page:home,header:home-general-information).
+struct URLValidationRule: InputValidationRule {
+    
+    // MARK: Functions
+    
+#if swift(>=6.0)
+    func validate(_ input: String?) throws(InputValidationError) -> Bool {
+        try validate(input: input)
+    }
+#else
+    func validate(_ input: String?) throws -> Bool {
+        try validate(input: input)
+    }
+#endif
+    
+}
+
+// MARK: - Definitions
+
+extension InputValidationRule where Self == URLValidationRule {
+    
+    // MARK: Constants
+    
+    /// A validation rule that checks whether an input is a URL or not.
+    static var url: Self { .init() }
+    
+}
+
+// MARK: - Helpers
+
+private extension URLValidationRule {
+    
+    // MARK: Functions
+    
+    /// Validates a given input.
+    ///
+    /// > note: This helper function would not be necessary when support for *Swift 5.10* is discontinued.
+    ///
+    /// - Parameter input: An input to be validated.
+    /// - Returns: A flag that indicates whether a given input has been validated or not.
+    /// - Throws: An error of type ``InputValidatorError`` in case the validation failed.
+    func validate(input: String?) throws -> Bool {
+        guard let input else {
+            return false
+        }
+        
+        guard input.fullyMatch(
+            pattern: .init(format: .Pattern.url)
+        ) else {
+            throw InputValidationError.inputNotURL
+        }
+        
+        return true
+    }
+    
+}
+
+// MARK: - Constants
+
+private extension String.Pattern {
+    /// A regular expression pattern that represents URL inputs.
+    ///
+    /// This regular expression is based on [this regular expression](https://regex101.com/r/3fYy3x/1) found while researching the topic.
+    static let url = "https?:\\/\\/(www\\.)?[-a-zA-Z0-9@:%._\\+~#=]{2,256}\\.[a-z]{2,4}\\b([-a-zA-Z0-9@:%_\\+.~#?&//=]*)"
+}
diff --git a/Tests/DiscogsService/Cases/Internal/Use Cases/ValidateInputUseCaseTests.swift b/Tests/DiscogsService/Cases/Internal/Use Cases/ValidateInputUseCaseTests.swift
index 9e5b93ffb..1f85f856b 100644
--- a/Tests/DiscogsService/Cases/Internal/Use Cases/ValidateInputUseCaseTests.swift	
+++ b/Tests/DiscogsService/Cases/Internal/Use Cases/ValidateInputUseCaseTests.swift	
@@ -119,6 +119,20 @@ struct ValidateInputUseCaseTests {
             expects: error
         )
     }
+    
+    @Test(arguments: zip(
+        Input.inputsURL,
+        Output.inputsURL
+    )) func `validate url`(
+        input: String?,
+        expects error: InputValidationError?
+    ) async throws {
+        try assertValidate(
+            rule: .url,
+            input: input,
+            expects: error
+        )
+    }
 #else
     @Test("validate camel case", arguments: zip(
         Input.inputsCamelCase,
@@ -217,6 +231,20 @@ struct ValidateInputUseCaseTests {
             expects: error
         )
     }
+    
+    @Test("validate url", arguments: zip(
+        Input.inputsURL,
+        Output.inputsURL
+    )) func validateURL(
+        input: String?,
+        expects error: InputValidationError?
+    ) async throws {
+        try assertValidate(
+            rule: .url,
+            input: input,
+            expects: error
+        )
+    }
 #endif
     
 }
@@ -273,6 +301,8 @@ private extension Input {
     static let inputsSecureUserToken: [String] = ["aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStT", "aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsS", "aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuU", "a4bBcCdDe3fFg6hH1IjJkK1LmMnNo0p9qQrRs5t7"]
     /// A list of inputs to validate against the semantic version validation rule.
     static let inputsSemanticVersion: [String] = ["0.0.4","1.2.3","10.20.30","1.1.2-prerelease+meta","1.1.2+meta","1.1.2+meta-valid","1.0.0-alpha","1.0.0-beta","1.0.0-alpha.beta","1.0.0-alpha.beta.1","1.0.0-alpha.1","1.0.0-alpha0.valid","1.0.0-alpha.0valid","1.0.0-alpha-a.b-c-somethinglong+build.1-aef.1-its-okay","1.0.0-rc.1+build.1","2.0.0-rc.1+build.123","1.2.3-beta","10.2.3-DEV-SNAPSHOT","1.2.3-SNAPSHOT-123","1.0.0","2.0.0","1.1.7","2.0.0+build.1848","2.0.1-alpha.1227","1.0.0-alpha+beta","1.2.3----RC-SNAPSHOT.12.9.1--.12+788","1.2.3----R-S.12.9.1--.12+meta","1.2.3----RC-SNAPSHOT.12.9.1--.12","1.0.0+0.build.1-rc.10000aaa-kk-0.1","99999999999999999999999.999999999999999999.99999999999999999","1.0.0-0A.is.legal","1","1.2","1.2.3-0123","1.2.3-0123.0123","1.1.2+.123","+invalid","-invalid","-invalid+invalid","-invalid.01","alpha","alpha.beta","alpha.beta.1","alpha.1","alpha+beta","alpha_beta","alpha.","alpha..","beta","1.0.0-alpha_beta","-alpha.","1.0.0-alpha..","1.0.0-alpha..1","1.0.0-alpha...1","1.0.0-alpha....1","1.0.0-alpha.....1","1.0.0-alpha......1","1.0.0-alpha.......1","01.1.1","1.01.1","1.1.01","1.2","1.2.3.DEV","1.2-SNAPSHOT","1.2.31.2.3----RC-SNAPSHOT.12.09.1--..12+788","1.2-RC-SNAPSHOT","-1.0.3-gamma+b7718","+justmeta","9.8.7+meta+meta","9.8.7-whatever+meta+meta","99999999999999999999999.999999999999999999.99999999999999999----RC-SNAPSHOT.12.09.1--------------------------------..12"]
+    /// A list of inputs to validate against the URL validation rule.
+    static let inputsURL: [String] = ["https://www.google.com", "http://www.google.com", "https://google.com/q=search", "http://google.com/q=search", "3333-768-0948", "1133.168.0248", "7678*999-8978", "httpq://google.com/q=search", "www.google.com", "www.google.com/?search=qppoao", "www . google.com/?search=qppoao", "https : //google.com/q=search", "htt://www.google.com", "://www.google.com", .empty]
 }
 
 private extension Output {
@@ -290,4 +320,6 @@ private extension Output {
     static let inputsSecureUserToken: [InputValidationError?] = [nil, .inputNotUserToken, .inputNotUserToken, .inputNotUserToken]
     /// A list of expected input validation errors to be thrown after validating inputs against the semantic version validation rule.
     static let inputsSemanticVersion: [InputValidationError?] = [nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion, .inputNotSemanticVersion]
+    /// A list of expected input validation errors to be thrown after validating inputs against the URL validation rule.
+    static let inputsURL: [InputValidationError?] = [nil, nil, nil, nil, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL, .inputNotURL]
 }