diff --git a/src/main/kotlin/dev/usbharu/hideout/Application.kt b/src/main/kotlin/dev/usbharu/hideout/Application.kt
index 56f3f1d8..e99bef82 100644
--- a/src/main/kotlin/dev/usbharu/hideout/Application.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/Application.kt
@@ -12,6 +12,7 @@ import dev.usbharu.hideout.repository.UserAuthRepository
 import dev.usbharu.hideout.repository.UserRepository
 import dev.usbharu.hideout.routing.*
 import dev.usbharu.hideout.service.*
+import dev.usbharu.hideout.service.impl.*
 import io.ktor.client.*
 import io.ktor.client.engine.cio.*
 import io.ktor.client.plugins.contentnegotiation.*
diff --git a/src/main/kotlin/dev/usbharu/hideout/plugins/ActivityPub.kt b/src/main/kotlin/dev/usbharu/hideout/plugins/ActivityPub.kt
index 7d0a41d2..2c8d1d52 100644
--- a/src/main/kotlin/dev/usbharu/hideout/plugins/ActivityPub.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/plugins/ActivityPub.kt
@@ -3,7 +3,7 @@ package dev.usbharu.hideout.plugins
 import dev.usbharu.hideout.ap.JsonLd
 import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.service.IUserAuthService
-import dev.usbharu.hideout.service.UserAuthService
+import dev.usbharu.hideout.service.impl.UserAuthService
 import dev.usbharu.hideout.util.HttpUtil.Activity
 import io.ktor.client.*
 import io.ktor.client.plugins.api.*
@@ -12,7 +12,6 @@ import io.ktor.client.statement.*
 import io.ktor.http.*
 import io.ktor.server.application.*
 import io.ktor.server.response.*
-import io.ktor.util.*
 import kotlinx.coroutines.runBlocking
 import tech.barbero.http.message.signing.HttpMessage
 import tech.barbero.http.message.signing.HttpMessageSigner
diff --git a/src/main/kotlin/dev/usbharu/hideout/routing/UserRouting.kt b/src/main/kotlin/dev/usbharu/hideout/routing/UserRouting.kt
index d73c8ad0..d43b070d 100644
--- a/src/main/kotlin/dev/usbharu/hideout/routing/UserRouting.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/routing/UserRouting.kt
@@ -4,8 +4,8 @@ import dev.usbharu.hideout.domain.model.User
 import dev.usbharu.hideout.plugins.UserSession
 import dev.usbharu.hideout.plugins.respondAp
 import dev.usbharu.hideout.plugins.tokenAuth
-import dev.usbharu.hideout.service.ActivityPubUserService
-import dev.usbharu.hideout.service.UserService
+import dev.usbharu.hideout.service.impl.ActivityPubUserService
+import dev.usbharu.hideout.service.impl.UserService
 import dev.usbharu.hideout.util.HttpUtil
 import io.ktor.http.*
 import io.ktor.server.application.*
@@ -13,7 +13,6 @@ import io.ktor.server.auth.*
 import io.ktor.server.request.*
 import io.ktor.server.response.*
 import io.ktor.server.routing.*
-import io.ktor.server.sessions.*
 
 @Suppress("unused")
 fun Application.user(userService: UserService, activityPubUserService: ActivityPubUserService) {
diff --git a/src/main/kotlin/dev/usbharu/hideout/routing/WellKnownRouting.kt b/src/main/kotlin/dev/usbharu/hideout/routing/WellKnownRouting.kt
index 41fc6fd1..f1e6a7a6 100644
--- a/src/main/kotlin/dev/usbharu/hideout/routing/WellKnownRouting.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/routing/WellKnownRouting.kt
@@ -1,7 +1,7 @@
 package dev.usbharu.hideout.routing
 
 import dev.usbharu.hideout.config.Config
-import dev.usbharu.hideout.service.UserService
+import dev.usbharu.hideout.service.impl.UserService
 import dev.usbharu.hideout.util.HttpUtil.Activity
 import io.ktor.http.*
 import io.ktor.server.application.*
diff --git a/src/main/kotlin/dev/usbharu/hideout/routing/userActivityPubRouting.kt b/src/main/kotlin/dev/usbharu/hideout/routing/userActivityPubRouting.kt
index 8993ecda..73d54fa8 100644
--- a/src/main/kotlin/dev/usbharu/hideout/routing/userActivityPubRouting.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/routing/userActivityPubRouting.kt
@@ -3,8 +3,8 @@ package dev.usbharu.hideout.routing
 import com.fasterxml.jackson.module.kotlin.readValue
 import dev.usbharu.hideout.ap.Follow
 import dev.usbharu.hideout.config.Config
-import dev.usbharu.hideout.service.ActivityPubService
-import dev.usbharu.hideout.service.ActivityPubUserService
+import dev.usbharu.hideout.service.impl.ActivityPubService
+import dev.usbharu.hideout.service.impl.ActivityPubUserService
 import dev.usbharu.hideout.util.HttpUtil
 import io.ktor.http.*
 import io.ktor.server.application.*
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubService.kt b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubService.kt
new file mode 100644
index 00000000..070046a3
--- /dev/null
+++ b/src/main/kotlin/dev/usbharu/hideout/service/activitypub/ActivityPubService.kt
@@ -0,0 +1,39 @@
+package dev.usbharu.hideout.service.activitypub
+
+interface ActivityPubService {
+    fun parseActivity(json:String): ActivityType
+
+    fun processActivity(json:String, type: ActivityType)
+}
+
+enum class ActivityType {
+    Accept,
+    Add,
+    Announce,
+    Arrive,
+    Block,
+    Create,
+    Delete,
+    Dislike,
+    Flag,
+    Follow,
+    Ignore,
+    Invite,
+    Join,
+    Leave,
+    Like,
+    Listen,
+    Move,
+    Offer,
+    Question,
+    Reject,
+    Read,
+    Remove,
+    TentativeReject,
+    TentativeAccept,
+    Travel,
+    Undo,
+    Update,
+    View,
+    Other
+}
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/ActivityPubService.kt b/src/main/kotlin/dev/usbharu/hideout/service/impl/ActivityPubService.kt
similarity index 74%
rename from src/main/kotlin/dev/usbharu/hideout/service/ActivityPubService.kt
rename to src/main/kotlin/dev/usbharu/hideout/service/impl/ActivityPubService.kt
index bc6c9f17..e693bd57 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/ActivityPubService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/impl/ActivityPubService.kt
@@ -1,6 +1,5 @@
-package dev.usbharu.hideout.service
+package dev.usbharu.hideout.service.impl
 
-import com.fasterxml.jackson.databind.ObjectMapper
 import dev.usbharu.hideout.config.Config
 
 class ActivityPubService() {
@@ -10,7 +9,7 @@ class ActivityPubService() {
         Undo
     }
 
-    fun switchApType(json:String):ActivityType{
+    fun switchApType(json:String): ActivityType {
         val typeAsText = Config.configData.objectMapper.readTree(json).get("type").asText()
         return when(typeAsText){
             "Follow" -> ActivityType.Follow
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/ActivityPubUserService.kt b/src/main/kotlin/dev/usbharu/hideout/service/impl/ActivityPubUserService.kt
similarity index 93%
rename from src/main/kotlin/dev/usbharu/hideout/service/ActivityPubUserService.kt
rename to src/main/kotlin/dev/usbharu/hideout/service/impl/ActivityPubUserService.kt
index 4c2b0f82..fd26123c 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/ActivityPubUserService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/impl/ActivityPubUserService.kt
@@ -1,8 +1,10 @@
-package dev.usbharu.hideout.service
+package dev.usbharu.hideout.service.impl
 
 import dev.usbharu.hideout.ap.*
 import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.plugins.postAp
+import dev.usbharu.hideout.service.IUserAuthService
+import dev.usbharu.hideout.service.IWebFingerService
 import io.ktor.client.*
 
 class ActivityPubUserService(
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/HttpSignService.kt b/src/main/kotlin/dev/usbharu/hideout/service/impl/HttpSignService.kt
similarity index 68%
rename from src/main/kotlin/dev/usbharu/hideout/service/HttpSignService.kt
rename to src/main/kotlin/dev/usbharu/hideout/service/impl/HttpSignService.kt
index 440ee426..07cf8941 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/HttpSignService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/impl/HttpSignService.kt
@@ -1,4 +1,4 @@
-package dev.usbharu.hideout.service
+package dev.usbharu.hideout.service.impl
 
 import java.security.PrivateKey
 
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/UserAuthService.kt b/src/main/kotlin/dev/usbharu/hideout/service/impl/UserAuthService.kt
similarity index 97%
rename from src/main/kotlin/dev/usbharu/hideout/service/UserAuthService.kt
rename to src/main/kotlin/dev/usbharu/hideout/service/impl/UserAuthService.kt
index ac60a847..cf5b0a48 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/UserAuthService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/impl/UserAuthService.kt
@@ -1,13 +1,13 @@
-package dev.usbharu.hideout.service
+package dev.usbharu.hideout.service.impl
 
 import dev.usbharu.hideout.config.Config
 import dev.usbharu.hideout.domain.model.User
 import dev.usbharu.hideout.domain.model.UserAuthentication
 import dev.usbharu.hideout.domain.model.UserAuthenticationEntity
-import dev.usbharu.hideout.domain.model.Users.screenName
 import dev.usbharu.hideout.exception.UserNotFoundException
 import dev.usbharu.hideout.repository.IUserAuthRepository
 import dev.usbharu.hideout.repository.IUserRepository
+import dev.usbharu.hideout.service.IUserAuthService
 import io.ktor.util.*
 import java.security.KeyPair
 import java.security.KeyPairGenerator
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/UserService.kt b/src/main/kotlin/dev/usbharu/hideout/service/impl/UserService.kt
similarity index 96%
rename from src/main/kotlin/dev/usbharu/hideout/service/UserService.kt
rename to src/main/kotlin/dev/usbharu/hideout/service/impl/UserService.kt
index 3183b212..4736338a 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/UserService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/impl/UserService.kt
@@ -1,4 +1,4 @@
-package dev.usbharu.hideout.service
+package dev.usbharu.hideout.service.impl
 
 import dev.usbharu.hideout.domain.model.User
 import dev.usbharu.hideout.domain.model.UserEntity
diff --git a/src/main/kotlin/dev/usbharu/hideout/service/WebFingerService.kt b/src/main/kotlin/dev/usbharu/hideout/service/impl/WebFingerService.kt
similarity index 96%
rename from src/main/kotlin/dev/usbharu/hideout/service/WebFingerService.kt
rename to src/main/kotlin/dev/usbharu/hideout/service/impl/WebFingerService.kt
index 9cc2cf52..8bf1c420 100644
--- a/src/main/kotlin/dev/usbharu/hideout/service/WebFingerService.kt
+++ b/src/main/kotlin/dev/usbharu/hideout/service/impl/WebFingerService.kt
@@ -1,8 +1,9 @@
-package dev.usbharu.hideout.service
+package dev.usbharu.hideout.service.impl
 
 import dev.usbharu.hideout.ap.Person
 import dev.usbharu.hideout.domain.model.User
 import dev.usbharu.hideout.domain.model.UserEntity
+import dev.usbharu.hideout.service.IWebFingerService
 import dev.usbharu.hideout.util.HttpUtil
 import dev.usbharu.hideout.webfinger.WebFinger
 import io.ktor.client.*
diff --git a/src/test/kotlin/dev/usbharu/hideout/plugins/ActivityPubKtTest.kt b/src/test/kotlin/dev/usbharu/hideout/plugins/ActivityPubKtTest.kt
index 8c7e7d76..36cefbbd 100644
--- a/src/test/kotlin/dev/usbharu/hideout/plugins/ActivityPubKtTest.kt
+++ b/src/test/kotlin/dev/usbharu/hideout/plugins/ActivityPubKtTest.kt
@@ -7,8 +7,8 @@ import dev.usbharu.hideout.domain.model.UserAuthenticationEntity
 import dev.usbharu.hideout.domain.model.UserEntity
 import dev.usbharu.hideout.repository.IUserAuthRepository
 import dev.usbharu.hideout.repository.IUserRepository
-import dev.usbharu.hideout.service.UserAuthService
-import dev.usbharu.hideout.service.toPem
+import dev.usbharu.hideout.service.impl.UserAuthService
+import dev.usbharu.hideout.service.impl.toPem
 import io.ktor.client.*
 import io.ktor.client.engine.mock.*
 import io.ktor.client.plugins.logging.*
@@ -17,7 +17,6 @@ import org.junit.jupiter.api.Test
 import java.security.KeyPairGenerator
 import java.security.interfaces.RSAPrivateKey
 import java.security.interfaces.RSAPublicKey
-import java.util.*
 
 class ActivityPubKtTest {
     @Test
diff --git a/src/test/kotlin/dev/usbharu/hideout/plugins/KtorKeyMapTest.kt b/src/test/kotlin/dev/usbharu/hideout/plugins/KtorKeyMapTest.kt
index 9f9a7cfe..3f56dd92 100644
--- a/src/test/kotlin/dev/usbharu/hideout/plugins/KtorKeyMapTest.kt
+++ b/src/test/kotlin/dev/usbharu/hideout/plugins/KtorKeyMapTest.kt
@@ -6,13 +6,12 @@ import dev.usbharu.hideout.domain.model.UserAuthenticationEntity
 import dev.usbharu.hideout.domain.model.UserEntity
 import dev.usbharu.hideout.repository.IUserAuthRepository
 import dev.usbharu.hideout.repository.IUserRepository
-import dev.usbharu.hideout.service.UserAuthService
-import dev.usbharu.hideout.service.toPem
+import dev.usbharu.hideout.service.impl.UserAuthService
+import dev.usbharu.hideout.service.impl.toPem
 import org.junit.jupiter.api.Test
 import java.security.KeyPairGenerator
 import java.security.interfaces.RSAPrivateKey
 import java.security.interfaces.RSAPublicKey
-import java.util.*
 
 class KtorKeyMapTest {