diff --git a/inngest-core/src/main/kotlin/com/inngest/Environment.kt b/inngest-core/src/main/kotlin/com/inngest/Environment.kt
index e926d913..30976eab 100644
--- a/inngest-core/src/main/kotlin/com/inngest/Environment.kt
+++ b/inngest-core/src/main/kotlin/com/inngest/Environment.kt
@@ -16,24 +16,6 @@ object Environment {
         return System.getenv(InngestSystem.EventKey.value) ?: ""
     }
 
-    fun inngestSigningKey(
-        env: InngestEnv,
-        key: String? = null,
-    ): String {
-        if (key != null) return key
-
-        return when (env) {
-            InngestEnv.Dev -> "test"
-            else -> {
-                val signingKey = System.getenv(InngestSystem.SigningKey.value)
-                if (signingKey == null) {
-                    throw Exception("signing key is required")
-                }
-                signingKey
-            }
-        }
-    }
-
     fun inngestEventApiBaseUrl(
         env: InngestEnv,
         url: String? = null,
diff --git a/inngest-core/src/main/kotlin/com/inngest/ServeConfig.kt b/inngest-core/src/main/kotlin/com/inngest/ServeConfig.kt
index ab65772e..573e0d1f 100644
--- a/inngest-core/src/main/kotlin/com/inngest/ServeConfig.kt
+++ b/inngest-core/src/main/kotlin/com/inngest/ServeConfig.kt
@@ -17,7 +17,17 @@ class ServeConfig(
 
     fun signingKey(): String {
         if (signingKey != null) return signingKey
-        return System.getenv(InngestSystem.EventKey.value) ?: ""
+
+        return when (client.env) {
+            InngestEnv.Dev -> "test"
+            else -> {
+                val signingKey = System.getenv(InngestSystem.SigningKey.value)
+                if (signingKey == null) {
+                    throw Exception("signing key is required")
+                }
+                signingKey
+            }
+        }
     }
 
     fun baseUrl(): String {
diff --git a/inngest-core/src/test/kotlin/com/inngest/EnvironmentTest.kt b/inngest-core/src/test/kotlin/com/inngest/EnvironmentTest.kt
index abda103c..75757e4b 100644
--- a/inngest-core/src/test/kotlin/com/inngest/EnvironmentTest.kt
+++ b/inngest-core/src/test/kotlin/com/inngest/EnvironmentTest.kt
@@ -19,29 +19,6 @@ internal class EnvironmentTest {
     // @Test
     // fun `test inngestEventKey with INNGEST_EVENT_KEY value`() {}
 
-    // Signing key
-    @Test
-    fun `test inngestSigningKey - dev`() {
-        assertEquals("test", Environment.inngestSigningKey(InngestEnv.Dev))
-    }
-
-    @Test
-    fun `test inngestSigningKey with key value`() {
-        val key = "signing key"
-        assertEquals(key, Environment.inngestSigningKey(InngestEnv.Dev, key))
-    }
-
-    @Test
-    fun `test inngestSigningKey - prod`() {
-        assertFails(
-            "signing key is required",
-            { Environment.inngestSigningKey(InngestEnv.Prod) },
-        )
-    }
-
-    // @Test
-    // fun `test inngestSigningKey with INNGEST_SIGNING_KEY value - prod`() {}
-
     // EventAPI URL
     @Test
     fun `test inngestEventApiBaseUrl - dev`() {
diff --git a/inngest-core/src/test/kotlin/com/inngest/ServeConfigTest.kt b/inngest-core/src/test/kotlin/com/inngest/ServeConfigTest.kt
index 7ef4430d..94864c35 100644
--- a/inngest-core/src/test/kotlin/com/inngest/ServeConfigTest.kt
+++ b/inngest-core/src/test/kotlin/com/inngest/ServeConfigTest.kt
@@ -3,17 +3,50 @@ package com.inngest
 import kotlin.test.*
 
 internal class ServeConfigTest {
+    val client = Inngest(appId = "test")
+
+    // appId()
     @Test
     fun `should return client appId if none are passed in`() {
-        val client = Inngest(appId = "test")
         val config = ServeConfig(client)
         assertEquals(client.appId, config.appId())
     }
 
     @Test
     fun `should return serve appId if passed in`() {
-        val client = Inngest(appId = "test")
         val config = ServeConfig(client = client, id = "hello")
         assertEquals("hello", config.appId())
     }
+
+    // signingKey()
+    @Test
+    fun `should return test string if not set - dev`() {
+        val config = ServeConfig(client = client)
+        assertEquals("test", config.signingKey())
+    }
+
+    @Test
+    fun `should throw error if not set - prod`() {
+        val prodClient = Inngest(appId = client.appId, env = "prod")
+        val config = ServeConfig(client = prodClient)
+        assertFails(
+            "signing key is required",
+            { config.signingKey() },
+        )
+    }
+
+    // @Test
+    // fun `should return INNGEST_SIGNING_KEY value - prod`() {}
+
+    @Test
+    fun `should return passed in value`() {
+        val key = "sigingkey"
+        val config = ServeConfig(client = client, signingKey = key)
+        assertEquals(key, config.signingKey())
+    }
+
+    // baseUrl()
+    // serveOrigin()
+    // servePath()
+    // logLevel()
 }