diff --git a/.github/workflows/pull-request-merge-check.yml b/.github/workflows/pull-request-merge-check.yml
index 40be67e8..6b0f64f4 100644
--- a/.github/workflows/pull-request-merge-check.yml
+++ b/.github/workflows/pull-request-merge-check.yml
@@ -29,6 +29,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.PAT }}
 
       - name: Gradle Wrapper Validation
         uses: gradle/actions/wrapper-validation@v4
@@ -55,6 +57,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.PAT }}
 
       - name: Set up JDK 21
         uses: actions/setup-java@v4
@@ -101,6 +105,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           ref: ${{ github.head_ref }}
+          token: '${{ secrets.PAT }}'
 
       - name: Set up JDK 21
         uses: actions/setup-java@v4
diff --git a/.gitignore b/.gitignore
index 39e4144d..9f79d3cb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -48,3 +48,4 @@ out/
 /hideout-core/files/
 /hideout-core/.kotlin/sessions/
 /hideout-mastodon/.kotlin/sessions/
+/http-client.private.env.json
diff --git a/hideout-core/build.gradle.kts b/hideout-core/build.gradle.kts
index 8e67e1c4..10054038 100644
--- a/hideout-core/build.gradle.kts
+++ b/hideout-core/build.gradle.kts
@@ -74,6 +74,7 @@ val os = org.gradle.nativeplatform.platform.internal
 
 dependencies {
     developmentOnly(libs.h2db)
+    developmentOnly("org.springframework.boot:spring-boot-devtools")
     detektPlugins(libs.detekt.formatting)
 
     implementation(libs.bundles.exposed)
@@ -152,6 +153,12 @@ configurations.matching { it.name == "detekt" }.all {
     }
 }
 
+//tasks{
+//    bootRun {
+//        sourceResources(sourceSets.main.get())
+//    }
+//}
+
 tasks.withType<io.gitlab.arturbosch.detekt.Detekt> {
     exclude("**/generated/**")
     doFirst {
diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/config/SecurityConfig.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/config/SecurityConfig.kt
index 25f9690d..2eccad56 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/config/SecurityConfig.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/core/config/SecurityConfig.kt
@@ -23,6 +23,7 @@ import com.nimbusds.jose.jwk.source.JWKSource
 import com.nimbusds.jose.proc.SecurityContext
 import dev.usbharu.hideout.core.infrastructure.springframework.oauth2.HideoutUserDetails
 import dev.usbharu.hideout.util.RsaUtil
+import org.slf4j.LoggerFactory
 import org.springframework.boot.context.properties.ConfigurationProperties
 import org.springframework.context.annotation.Bean
 import org.springframework.context.annotation.Configuration
@@ -50,6 +51,10 @@ import org.springframework.security.oauth2.server.authorization.token.JwtEncodin
 import org.springframework.security.oauth2.server.authorization.token.OAuth2TokenCustomizer
 import org.springframework.security.web.SecurityFilterChain
 import org.springframework.security.web.authentication.LoginUrlAuthenticationEntryPoint
+import java.security.KeyPairGenerator
+import java.security.interfaces.RSAPrivateKey
+import java.security.interfaces.RSAPublicKey
+import java.util.*
 
 @Configuration
 @EnableWebSecurity(debug = false)
@@ -126,17 +131,54 @@ class SecurityConfig {
     }
 
     @Bean
-    fun loadJwkSource(jwkConfig: JwkConfig): JWKSource<SecurityContext> {
-        val rsaKey = RSAKey.Builder(RsaUtil.decodeRsaPublicKey(jwkConfig.publicKey))
-            .privateKey(RsaUtil.decodeRsaPrivateKey(jwkConfig.privateKey)).keyID(jwkConfig.keyId).build()
+    fun loadJwkSource(jwkConfig: JwkConfig, applicationConfig: ApplicationConfig): JWKSource<SecurityContext> {
+        if (jwkConfig.keyId == null) {
+            logger.error("hideout.security.jwt.keyId is null.")
+        }
+        if (jwkConfig.publicKey == null) {
+            logger.error("hideout.security.jwt.publicKey is null.")
+        }
+        if (jwkConfig.privateKey == null) {
+            logger.error("hideout.security.jwt.privateKey is null.")
+        }
+        if (jwkConfig.keyId == null || jwkConfig.publicKey == null || jwkConfig.privateKey == null) {
+            val keyPairGenerator = KeyPairGenerator.getInstance("RSA")
+            keyPairGenerator.initialize(applicationConfig.keySize)
+            val generateKeyPair = keyPairGenerator.generateKeyPair()
+
+            jwkConfig.keyId = UUID.randomUUID().toString()
+            jwkConfig.publicKey = RsaUtil.encodeRsaPublicKey(generateKeyPair.public as RSAPublicKey)
+            jwkConfig.privateKey = RsaUtil.encodeRsaPrivateKey(generateKeyPair.private as RSAPrivateKey)
+            logger.error(
+                """
+                |==============
+                |==============
+                |
+                |**Write the following settings in application.yml**
+                |
+                |hideout:
+                |   security:
+                |       jwt:
+                |           keyId: ${jwkConfig.keyId}
+                |           publicKey: ${jwkConfig.publicKey}
+                |           privateKey: ${jwkConfig.privateKey}
+                |
+                |==============
+                |==============
+                """.trimMargin()
+            )
+        }
+
+        val rsaKey = RSAKey.Builder(RsaUtil.decodeRsaPublicKey(jwkConfig.publicKey!!))
+            .privateKey(RsaUtil.decodeRsaPrivateKey(jwkConfig.privateKey!!)).keyID(jwkConfig.keyId).build()
         return ImmutableJWKSet(JWKSet(rsaKey))
     }
 
     @ConfigurationProperties("hideout.security.jwt")
     data class JwkConfig(
-        val keyId: String,
-        val publicKey: String,
-        val privateKey: String,
+        var keyId: String?,
+        var publicKey: String?,
+        var privateKey: String?,
     )
 
     @Bean
@@ -195,4 +237,8 @@ class SecurityConfig {
 
         return roleHierarchyImpl
     }
+
+    companion object {
+        private val logger = LoggerFactory.getLogger(SecurityConfig::class.java)
+    }
 }
diff --git a/hideout-core/src/main/kotlin/dev/usbharu/hideout/util/RsaUtil.kt b/hideout-core/src/main/kotlin/dev/usbharu/hideout/util/RsaUtil.kt
index 56b20ac3..4af71576 100644
--- a/hideout-core/src/main/kotlin/dev/usbharu/hideout/util/RsaUtil.kt
+++ b/hideout-core/src/main/kotlin/dev/usbharu/hideout/util/RsaUtil.kt
@@ -44,4 +44,12 @@ object RsaUtil {
     }
 
     fun decodeRsaPrivateKey(encoded: String): RSAPrivateKey = decodeRsaPrivateKey(Base64Util.decode(encoded))
+
+    fun encodeRsaPublicKey(publicKey: RSAPublicKey): String {
+        return Base64Util.encode(publicKey.encoded)
+    }
+
+    fun encodeRsaPrivateKey(privateKey: RSAPrivateKey): String {
+        return Base64Util.encode(privateKey.encoded)
+    }
 }
diff --git a/hideout-core/src/main/resources/application-dev.yml b/hideout-core/src/main/resources/application-dev.yml
new file mode 100644
index 00000000..a6d4118b
--- /dev/null
+++ b/hideout-core/src/main/resources/application-dev.yml
@@ -0,0 +1,42 @@
+hideout:
+  url: "http://localhost:8081"
+  private: true
+  debug:
+    trace-query-exception: true
+    trace-query-call: true
+spring:
+  devtools:
+    livereload:
+      enabled: true
+    restart:
+      enabled: true
+  data:
+    mongodb:
+      auto-index-creation: true
+      host: localhost
+      port: 27017
+      database: hideout
+  datasource:
+    driver-class-name: org.postgresql.Driver
+    url: "jdbc:postgresql:hideout"
+    username: "postgres"
+    password: "password"
+  servlet:
+    multipart:
+      max-file-size: 40MB
+      max-request-size: 40MB
+  threads:
+    virtual:
+      enabled: true
+  messages:
+    basename: messages.hideout-web-messages
+  thymeleaf:
+    cache: false
+server:
+  tomcat:
+    basedir: tomcat
+    accesslog:
+      enabled: true
+    max-http-form-post-size: 40MB
+    max-swallow-size: 40MB
+  port: 8081
\ No newline at end of file
diff --git a/hideout-core/src/main/resources/application.yml b/hideout-core/src/main/resources/application.yml
index 371565d4..81d62b8a 100644
--- a/hideout-core/src/main/resources/application.yml
+++ b/hideout-core/src/main/resources/application.yml
@@ -1,23 +1,7 @@
 #file: noinspection SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection,SpellCheckingInspection
 hideout:
   url: "https://test-hideout-dev.usbharu.dev"
-  use-mongodb: true
-  owl:
-    producer:
-      standalone: embedded
-  security:
-    jwt:
-      generate: true
-      key-id: a
-      private-key: "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"
-      public-key: "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAu1SU1LfVLPHCozMxH2Mo4lgOEePzNm0tRgeLezV6ffAt0gunVTLw7onLRnrq0/IzW7yWR7QkrmBL7jTKEn5u+qKhbwKfBstIs+bMY2Zkp18gnTxKLxoS2tFczGkPLPgizskuemMghRniWaoLcyehkd3qqGElvW/VDL5AaWTg0nLVkjRo9z+40RQzuVaE8AkAFmxZzow3x+VJYKdjykkJ0iT9wCS0DRTXu269V264Vf/3jvredZiKRkgwlL9xNAwxXFg0x/XFw005UWVRIkdgcKWTjpBP2dPwVZ4WWC+9aGVd+Gyn1o0CLelf4rEjGoXbAAEgAqeGUxrcIlbjXfbcmwIDAQAB"
   private: true
-  debug:
-    trace-query-exception: true
-    trace-query-call: true
-
-
-
 
 spring:
   data:
@@ -26,12 +10,6 @@ spring:
       host: localhost
       port: 27017
       database: hideout
-  jmx:
-    enabled: false
-  jackson:
-    serialization:
-      WRITE_DATES_AS_TIMESTAMPS: false
-    default-property-inclusion: always
   datasource:
     driver-class-name: org.postgresql.Driver
     url: "jdbc:postgresql:hideout"
@@ -41,9 +19,6 @@ spring:
     multipart:
       max-file-size: 40MB
       max-request-size: 40MB
-  h2:
-    console:
-      enabled: true
   threads:
     virtual:
       enabled: true
diff --git a/http-client.env.json b/http-client.env.json
new file mode 100644
index 00000000..c1b28a1f
--- /dev/null
+++ b/http-client.env.json
@@ -0,0 +1,19 @@
+{
+  "dev": {
+    "name": "value",
+    "Security": {
+      "Auth": {
+        "auth-id": {
+          "Type": "OAuth2",
+          "Grant Type": "Authorization Code",
+          "Client ID": "{{client_id}}",
+          "Client Secret": "{{client_secret}}",
+          "Redirect URL": "https://example.com",
+          "Token URL": "http://{{host}}/oauth/token",
+          "Auth URL": "http://{{host}}/oauth/authorize",
+          "Scope": "write read"
+        }
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/mastodon-api.http b/mastodon-api.http
new file mode 100644
index 00000000..608850f0
--- /dev/null
+++ b/mastodon-api.http
@@ -0,0 +1,14 @@
+POST http://{{host}}/api/v1/apps
+Accept: application/json
+Content-Type: application/json
+
+{
+  "client_name": "test-client",
+  "redirect_uris": "https://example.com",
+  "scopes": "write read"
+}
+
+###
+
+GET http://{{host}}/api/v1/accounts/verify_credentials
+Authorization: Bearer {{$auth.token("auth-id")}}
\ No newline at end of file