diff --git a/.github/workflows/pull-request-merge-check.yml b/.github/workflows/pull-request-merge-check.yml
index f751ea1c..701df932 100644
--- a/.github/workflows/pull-request-merge-check.yml
+++ b/.github/workflows/pull-request-merge-check.yml
@@ -76,7 +76,36 @@ jobs:
           gradle-home-cache-cleanup: true
 
       - name: Build
-        run: ./gradlew classes --no-daemon
+        run: ./gradlew :hideout-core:classes --no-daemon
+
+  hideout-mastodon-setup:
+    needs:
+      - change
+    if: github.event.pull_request.draft == false && needs.change.outputs.mastodon == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.PAT }}
+
+      - name: Gradle Wrapper Validation
+        uses: gradle/actions/wrapper-validation@v4
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-read-only: false
+          gradle-home-cache-cleanup: true
+
+      - name: Build
+        run: ./gradlew :hideout-mastodon:classes --no-daemon
 
   hideout-core-unit-test:
     needs:
@@ -117,22 +146,62 @@ jobs:
           name: 'hideout-core.xml'
           path: 'hideout-core/build/reports/kover/hideout-core.xml'
 
+
+  hideout-mastodon-unit-test:
+    needs:
+      - hideout-mastodon-setup
+      - change
+    if: github.event.pull_request.draft == false && needs.change.outputs.mastodon == 'true'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.PAT }}
+
+      - name: Set up JDK 21
+        uses: actions/setup-java@v4
+        with:
+          java-version: '21'
+          distribution: 'temurin'
+
+      - name: Setup Gradle
+        uses: gradle/actions/setup-gradle@v4
+        with:
+          cache-read-only: false
+          gradle-home-cache-cleanup: true
+
+      - name: Unit Test
+        run: ./hideout-mastodon/gradlew :hideout-mastodon:koverXmlReport
+
+      - name: JUnit Test Report
+        uses: mikepenz/action-junit-report@v4
+        with:
+          report_paths: '**/TEST-*.xml'
+          check_name: 'hideout-core JUnit Test Report'
+
+      - name: Upload Coverage Report
+        uses: actions/upload-artifact@v4
+        with:
+          name: 'hideout-core.xml'
+          path: 'hideout-core/build/reports/kover/hideout-mastodon.xml'
+
   coverage:
     needs:
       - change
       - hideout-core-unit-test
+      - hideout-mastodon-unit-test
     runs-on: ubuntu-latest
     steps:
       - name: Download Coverage Report
         uses: actions/download-artifact@v4
         with:
-          name: 'hideout-core.xml'
           path: 'hideout-core/build/reports/kover/'
       - name: Report Coverage
         uses: madrapps/jacoco-report@v1.7.0
         with:
           paths: |
-            ${{ github.workspace }}/hideout-core/build/reports/kover/hideout-core.xml
+            ${{ github.workspace }}/hideout-core/build/reports/kover/**.xml
           token: ${{ secrets.GITHUB_TOKEN }}
           title: Code Coverage
           update-comment: true
@@ -143,6 +212,7 @@ jobs:
     needs:
       - change
       - hideout-core-setup
+      - hideout-mastodon-setup
     runs-on: ubuntu-latest
     permissions:
       contents: write
diff --git a/hideout-mastodon/build.gradle.kts b/hideout-mastodon/build.gradle.kts
index 12ad6ee8..38cd2c58 100644
--- a/hideout-mastodon/build.gradle.kts
+++ b/hideout-mastodon/build.gradle.kts
@@ -1,3 +1,4 @@
+import kotlinx.kover.gradle.plugin.dsl.CoverageUnit
 import org.openapitools.generator.gradle.plugin.tasks.GenerateTask
 
 plugins {
@@ -6,6 +7,7 @@ plugins {
     alias(libs.plugins.spring.boot)
     alias(libs.plugins.kotlin.spring)
     alias(libs.plugins.detekt)
+    alias(libs.plugins.kover)
 }
 
 
@@ -131,6 +133,52 @@ configurations.matching { it.name == "detekt" }.all {
     }
 }
 
+project.gradle.taskGraph.whenReady {
+    if (this.hasTask(":koverGenerateArtifact")) {
+        val task = this.allTasks.find { it.name == "test" }
+        val verificationTask = task as VerificationTask
+        verificationTask.ignoreFailures = true
+    }
+}
+
+kover {
+    currentProject {
+        sources {
+
+
+        }
+    }
+
+    reports {
+        verify {
+            rule {
+                bound {
+                    minValue = 50
+                    coverageUnits = CoverageUnit.INSTRUCTION
+                }
+            }
+        }
+        total {
+            xml {
+                xmlFile = file("$buildDir/reports/kover/hideout-core.xml")
+            }
+        }
+        filters {
+            excludes {
+                annotatedBy("org.springframework.context.annotation.Configuration")
+                annotatedBy("org.springframework.boot.context.properties.ConfigurationProperties")
+                packages(
+                    "dev.usbharu.hideout.controller.mastodon.generated",
+                    "dev.usbharu.hideout.domain.mastodon.model.generated"
+                )
+                packages("org.springframework")
+                packages("org.jetbrains")
+            }
+        }
+
+    }
+}
+
 tasks.withType<io.gitlab.arturbosch.detekt.Detekt> {
     exclude("**/generated/**")
     doFirst {