diff --git a/mateclaw-server/src/test/java/vip/mate/goal/GoalJsonExternalDatabaseIntegrationTest.java b/mateclaw-server/src/test/java/vip/mate/goal/GoalJsonExternalDatabaseIntegrationTest.java
new file mode 100644
index 00000000..5b490bdc
--- /dev/null
+++ b/mateclaw-server/src/test/java/vip/mate/goal/GoalJsonExternalDatabaseIntegrationTest.java
@@ -0,0 +1,49 @@
+package vip.mate.goal;
+
+import org.junit.jupiter.api.condition.EnabledIfSystemProperty;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+
+/**
+ * Opt-in replay of the same real-service acceptance contract against a disposable external DB.
+ * Supply mateclaw.json.external.{url,driver,username,password,dialect}; never point at user data.
+ * Use an empty disposable database. The production Flyway tree runs by default;
+ * an explicitly supplied migration-location can isolate unrelated legacy migration defects.
+ * Memory and bundled-skill import are mocked; Goal storage, transactions and recipes are real.
+ */
+@EnabledIfSystemProperty(named = "mateclaw.json.external.enabled", matches = "true")
+class GoalJsonExternalDatabaseIntegrationTest extends GoalJsonAcceptanceIntegrationTest {
+    // Binary bundled-skill imports are outside this JSON protocol contract.
+    @org.springframework.boot.test.mock.mockito.MockBean
+    private vip.mate.skill.workspace.SkillWorkspaceBootstrapRunner skillWorkspaceBootstrap;
+
+    @DynamicPropertySource
+    static void externalDatabase(DynamicPropertyRegistry properties) {
+        String url = required("url");
+        String driver = required("driver");
+        String username = required("username");
+        String password = required("password");
+        String dialect = required("dialect");
+        if (!dialect.equals("mysql") && !dialect.equals("kingbase")) {
+            throw new IllegalArgumentException("External dialect must be mysql or kingbase");
+        }
+        properties.add("spring.datasource.url", () -> url);
+        properties.add("spring.datasource.driver-class-name", () -> driver);
+        properties.add("spring.datasource.username", () -> username);
+        properties.add("spring.datasource.password", () -> password);
+        properties.add("spring.flyway.url", () -> url);
+        properties.add("spring.flyway.user", () -> username);
+        properties.add("spring.flyway.password", () -> password);
+        properties.add("spring.flyway.locations", () -> System.getProperty(
+                "mateclaw.json.external.migration-location", "classpath:db/migration/" + dialect));
+        if (dialect.equals("mysql")) {
+            properties.add("spring.datasource.hikari.transaction-isolation", () -> "TRANSACTION_REPEATABLE_READ");
+        }
+    }
+
+    private static String required(String name) {
+        String value = System.getProperty("mateclaw.json.external." + name);
+        if (value == null || value.isBlank()) throw new IllegalArgumentException("Missing external database property: " + name);
+        return value;
+    }
+}