diff --git a/spine/src/commonMain/kotlin/Id.kt b/spine/src/commonMain/kotlin/Id.kt
index 0a06eee..0c3dcc3 100644
--- a/spine/src/commonMain/kotlin/Id.kt
+++ b/spine/src/commonMain/kotlin/Id.kt
@@ -1,8 +1,13 @@
 package opensavvy.spine
 
+import kotlinx.serialization.KSerializer
 import kotlinx.serialization.Serializable
+import kotlinx.serialization.descriptors.PrimitiveKind
+import kotlinx.serialization.descriptors.PrimitiveSerialDescriptor
+import kotlinx.serialization.encoding.Decoder
+import kotlinx.serialization.encoding.Encoder
 
-@Serializable
+@Serializable(with = Id.Serializer::class)
 data class Id(
 	val service: Route.Segment,
 	val resource: Route,
@@ -11,6 +16,23 @@ data class Id(
 	constructor(service: String, resource: Route) : this(Route.Segment(service), resource)
 
 	override fun toString() = "$service/$resource"
+
+	//region Serializer
+	internal object Serializer : KSerializer<Id> {
+		override val descriptor = PrimitiveSerialDescriptor("opensavvy.spine.Id", PrimitiveKind.STRING)
+
+		override fun serialize(encoder: Encoder, value: Id) {
+			encoder.encodeString("${value.service}/${value.resource}")
+		}
+
+		override fun deserialize(decoder: Decoder): Id {
+			val segments = decoder.decodeString().split('/')
+				.map { Route.Segment(it) }
+
+			return Id(segments.first(), Route(segments.drop(1)))
+		}
+	}
+	//endregion
 }
 
 @Serializable
diff --git a/spine/src/commonTest/kotlin/IdTest.kt b/spine/src/commonTest/kotlin/IdTest.kt
index a5e4ac0..3617b21 100644
--- a/spine/src/commonTest/kotlin/IdTest.kt
+++ b/spine/src/commonTest/kotlin/IdTest.kt
@@ -1,5 +1,8 @@
 package opensavvy.spine
 
+import kotlinx.serialization.decodeFromString
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
 import opensavvy.spine.Route.Companion.div
 import kotlin.test.Test
 import kotlin.test.assertEquals
@@ -12,4 +15,15 @@ class IdTest {
 
 		assertEquals("v2/int/35eb", id.toString())
 	}
+
+	@Test
+	fun serialize() {
+		val id = Id(service = "v2", resource = Route / "int" / "35eb")
+
+		val serialized = Json.encodeToString(id)
+		assertEquals("v2/int/35eb", id.toString())
+
+		val deserialized = Json.decodeFromString<Id>(serialized)
+		assertEquals(id, deserialized)
+	}
 }