diff --git a/packages/vertice-core/src/vertice_core/adk/base.py b/packages/vertice-core/src/vertice_core/adk/base.py
index aeb980ca..1f707936 100644
--- a/packages/vertice-core/src/vertice_core/adk/base.py
+++ b/packages/vertice-core/src/vertice_core/adk/base.py
@@ -10,6 +10,7 @@
 from vertice_core.providers.vertex_ai import VertexAIProvider
 from vertice_core.memory.cortex.cortex import MemoryCortex
 from vertice_core.messaging.events import SystemEvent, get_event_bus
+from vertice_core.adk.tools import ApiRegistry
 
 
 class VerticeAgent(abc.ABC):
@@ -32,6 +33,7 @@ def __init__(
         # Injected providers
         self._provider = VertexAIProvider(project=project, location=location, model_name=model)
         self._cortex = MemoryCortex()
+        self.api_registry = ApiRegistry()
 
     def emit_event(self, event_type: str, payload: Mapping[str, Any]) -> None:
         """
diff --git a/packages/vertice-core/src/vertice_core/adk/tools.py b/packages/vertice-core/src/vertice_core/adk/tools.py
index 2b5b397d..8b462c27 100644
--- a/packages/vertice-core/src/vertice_core/adk/tools.py
+++ b/packages/vertice-core/src/vertice_core/adk/tools.py
@@ -65,6 +65,28 @@ def get_schemas(self) -> List[Dict[str, Any]]:
         return schemas
 
 
+class ApiRegistry:
+    """
+    Registry for dynamic API discovery (Blueprint 2026).
+    Enables agents to discover and connect to external APIs via Vertex AI Extensions.
+    """
+
+    def __init__(self) -> None:
+        self._apis: Dict[str, Any] = {}
+
+    def register_api(self, name: str, spec: Dict[str, Any]) -> None:
+        """Register an external API specification."""
+        self._apis[name] = spec
+
+    def list_apis(self) -> List[str]:
+        """List all registered API names."""
+        return list(self._apis.keys())
+
+    def get_api(self, name: str) -> Optional[Dict[str, Any]]:
+        """Get API specification by name."""
+        return self._apis.get(name)
+
+
 def vertice_tool(func: T) -> T:
     """
     Decorator to mark a method as a tool.
diff --git a/tests/unit/test_vertice_adk_sdk.py b/tests/unit/test_vertice_adk_sdk.py
index eaaa7d67..f4f930e9 100644
--- a/tests/unit/test_vertice_adk_sdk.py
+++ b/tests/unit/test_vertice_adk_sdk.py
@@ -49,3 +49,8 @@ async def test_sdk_agent_compliance(mock_vertex_ai_provider):
 
     # 3. Valida a identidade
     assert agent.system_prompt == "You are a security auditor."
+
+    # 4. Valida inicialização do ApiRegistry (Blueprint 2026)
+    from vertice_core.adk.tools import ApiRegistry
+    assert hasattr(agent, "api_registry")
+    assert isinstance(agent.api_registry, ApiRegistry)