diff --git a/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/Anthropic.kt b/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/Anthropic.kt
index 35fd0bc..cc862c5 100644
--- a/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/Anthropic.kt
+++ b/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/Anthropic.kt
@@ -2,6 +2,7 @@ package com.tddworks.anthropic.api
 
 import com.tddworks.anthropic.api.internal.AnthropicApi
 import com.tddworks.anthropic.api.messages.api.Messages
+import com.tddworks.di.getInstance
 
 /**
  * Interface for interacting with the Anthropic API.
@@ -13,6 +14,26 @@ interface Anthropic : Messages {
     companion object {
         const val BASE_URL = "api.anthropic.com"
         const val ANTHROPIC_VERSION = "2023-06-01"
+
+        /**
+         * Creates an instance of Anthropic API with the provided configurations.
+         *
+         * @param apiKey a function that returns the API key to be used for authentication. Defaults to "CONFIGURE_ME" if not provided.
+         * @param baseUrl a function that returns the base URL of the API. Defaults to the value specified in the Anthropic companion object if not provided.
+         * @param anthropicVersion a function that returns the version of the Anthropic API to be used. Defaults to "2023-06-01" if not provided.
+         * @return an instance of Anthropic API configured with the provided settings.
+         */
+        fun create(
+            apiKey: () -> String = { "CONFIGURE_ME" },
+            baseUrl: () -> String = { BASE_URL },
+            anthropicVersion: () -> String = { ANTHROPIC_VERSION }
+        ): Anthropic {
+            return AnthropicApi(
+                apiKey = apiKey(),
+                apiURL = baseUrl(),
+                anthropicVersion = anthropicVersion(),
+            )
+        }
     }
 
     /**
@@ -51,10 +72,12 @@ fun Anthropic(
     apiKey: () -> String = { "CONFIGURE_ME" },
     baseUrl: () -> String = { Anthropic.BASE_URL },
     anthropicVersion: () -> String = { "2023-06-01" },
+    messages: Messages = getInstance()
 ): Anthropic {
     return AnthropicApi(
         apiKey = apiKey(),
         apiURL = baseUrl(),
-        anthropicVersion = anthropicVersion()
+        anthropicVersion = anthropicVersion(),
+        messages = messages
     )
 }
\ No newline at end of file
diff --git a/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/internal/AnthropicApi.kt b/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/internal/AnthropicApi.kt
index 25ee01d..863026f 100644
--- a/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/internal/AnthropicApi.kt
+++ b/anthropic-client/anthropic-client-core/src/commonMain/kotlin/com/tddworks/anthropic/api/internal/AnthropicApi.kt
@@ -16,7 +16,8 @@ class AnthropicApi(
     private val apiKey: String,
     private val apiURL: String,
     private val anthropicVersion: String,
-) : Anthropic, Messages by getInstance() {
+    private val messages: Messages = getInstance()
+) : Anthropic, Messages by messages {
     /**
      * Gets the API key.
      *
diff --git a/anthropic-client/anthropic-client-core/src/jvmTest/kotlin/com/tddworks/anthropic/api/AnthropicTest.kt b/anthropic-client/anthropic-client-core/src/jvmTest/kotlin/com/tddworks/anthropic/api/AnthropicTest.kt
index 3dd976f..63e0ce4 100644
--- a/anthropic-client/anthropic-client-core/src/jvmTest/kotlin/com/tddworks/anthropic/api/AnthropicTest.kt
+++ b/anthropic-client/anthropic-client-core/src/jvmTest/kotlin/com/tddworks/anthropic/api/AnthropicTest.kt
@@ -22,7 +22,7 @@ class AnthropicTest : AutoCloseKoinTest() {
         val target = Anthropic(
             baseUrl = { "http://localhost:8080" },
             apiKey = { "1234" },
-            anthropicVersion = { "2024-03-01" }
+            anthropicVersion = { "2024-03-01" },
         )
 
         assertEquals("http://localhost:8080", target.baseUrl())