diff --git a/packages/vertice-core/src/vertice_core/adk/__init__.py b/packages/vertice-core/src/vertice_core/adk/__init__.py
index e69de29b..edc4aeb7 100644
--- a/packages/vertice-core/src/vertice_core/adk/__init__.py
+++ b/packages/vertice-core/src/vertice_core/adk/__init__.py
@@ -0,0 +1,12 @@
+"""Vertice ADK - Agent Development Kit (2026 Google-Native)."""
+
+from vertice_core.adk.base import VerticeAgent
+from vertice_core.adk.tools import ToolRegistry, vertice_tool
+from vertice_core.adk.registry import ApiRegistry
+
+__all__ = [
+    "VerticeAgent",
+    "ToolRegistry",
+    "vertice_tool",
+    "ApiRegistry",
+]
diff --git a/packages/vertice-core/src/vertice_core/adk/base.py b/packages/vertice-core/src/vertice_core/adk/base.py
index aeb980ca..cd6a4ea3 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.registry import ApiRegistry
 
 
 class VerticeAgent(abc.ABC):
@@ -33,6 +34,9 @@ def __init__(
         self._provider = VertexAIProvider(project=project, location=location, model_name=model)
         self._cortex = MemoryCortex()
 
+        # Dynamic Discovery Registry
+        self.apis = ApiRegistry(project=project, location=location)
+
     def emit_event(self, event_type: str, payload: Mapping[str, Any]) -> None:
         """
         Emit an internal telemetry event (fire-and-forget).
diff --git a/packages/vertice-core/src/vertice_core/adk/registry.py b/packages/vertice-core/src/vertice_core/adk/registry.py
new file mode 100644
index 00000000..61938f90
--- /dev/null
+++ b/packages/vertice-core/src/vertice_core/adk/registry.py
@@ -0,0 +1,108 @@
+"""Vertice ADK - Dynamic API Registry for 2026 Google-Native ecosystem."""
+
+from __future__ import annotations
+
+import os
+import logging
+from typing import Any, Dict, List, Optional
+
+logger = logging.getLogger(__name__)
+
+# --- Google Gen AI SDK (Vertex AI) ---
+HAS_GENAI_SDK = False
+try:
+    from google import genai
+    HAS_GENAI_SDK = True
+except ImportError:
+    pass
+
+
+class ApiRegistry:
+    """
+    Dynamic registry for discovering and managing available APIs and models.
+    Ensures runtime compatibility across different environments (GCP vs local).
+    """
+
+    def __init__(
+        self,
+        project: Optional[str] = None,
+        location: str = "global"
+    ) -> None:
+        self.project = project or os.getenv("GOOGLE_CLOUD_PROJECT")
+        self.location = location
+        self._genai_client = None
+
+        # Check environment
+        self._is_gcp = self._check_gcp_environment()
+        logger.debug(f"ApiRegistry initialized. GCP detected: {self._is_gcp}")
+
+    def _check_gcp_environment(self) -> bool:
+        """Heuristic to detect if running in a GCP environment."""
+        # Check for standard GCP environment variables
+        return any([
+            os.getenv("GOOGLE_CLOUD_PROJECT"),
+            os.getenv("K_SERVICE"),  # Cloud Run
+            os.getenv("GAE_SERVICE"),  # App Engine
+            os.path.exists("/var/run/secrets/google")  # GKE
+        ])
+
+    def _get_genai_client(self) -> Optional[Any]:
+        """Lazy initialization of the GenAI client."""
+        if self._genai_client is not None:
+            return self._genai_client
+
+        if not HAS_GENAI_SDK:
+            logger.debug("google-genai SDK not installed, discovery disabled.")
+            return None
+
+        try:
+            # We don't want this to raise during instantiation of the registry
+            self._genai_client = genai.Client(
+                vertexai=True,
+                project=self.project,
+                location=self.location,
+            )
+            return self._genai_client
+        except Exception as e:
+            logger.warning(f"Failed to initialize GenAI client for discovery: {e}")
+            return None
+
+    async def discover_models(self) -> List[Dict[str, Any]]:
+        """
+        Dynamically discover available Gemini models on Vertex AI.
+
+        Returns a list of model metadata. Returns an empty list if discovery is
+        unavailable or fails.
+        """
+        client = self._get_genai_client()
+        if client is None:
+            return []
+
+        try:
+            # Note: client.aio.models.list is the pattern for async discovery in 2026 SDK
+            response = await client.aio.models.list(config={"page_size": 50})
+
+            # Handle both Pager and direct list response
+            models = getattr(response, "models", response)
+
+            return [
+                {
+                    "name": getattr(m, "name", str(m)),
+                    "display_name": getattr(m, "display_name", ""),
+                    "description": getattr(m, "description", ""),
+                    "capabilities": getattr(m, "supported_generation_methods", []),
+                }
+                for m in models
+            ]
+        except Exception as e:
+            logger.warning(f"Dynamic model discovery failed: {e}")
+            return []
+
+    def get_status(self) -> Dict[str, Any]:
+        """Return the current status of the registry and environment."""
+        return {
+            "is_gcp": self._is_gcp,
+            "has_sdk": HAS_GENAI_SDK,
+            "project": self.project,
+            "location": self.location
+        }
diff --git a/tests/unit/test_vertice_adk_discovery.py b/tests/unit/test_vertice_adk_discovery.py
new file mode 100644
index 00000000..d9318dd4
--- /dev/null
+++ b/tests/unit/test_vertice_adk_discovery.py
@@ -0,0 +1,75 @@
+import pytest
+import os
+from unittest.mock import MagicMock, patch
+from vertice_core.adk.base import VerticeAgent
+from vertice_core.adk.registry import ApiRegistry
+from typing import Dict, Any
+from collections.abc import Mapping
+
+
+class MockAgent(VerticeAgent):
+    """Minimal agent for testing discovery."""
+    @property
+    def system_prompt(self):
+        return "Test prompt"
+
+    async def query(self, *, input: str | Mapping[str, Any], **kwargs: Any) -> Dict[str, Any]:
+        return {"output": "test"}
+
+
+def test_api_registry_instantiation_no_gcp():
+    """Valida se o ApiRegistry pode ser instanciado fora do GCP sem erro."""
+    # Garante que as env vars do GCP não estão presentes
+    with patch.dict(os.environ, {}, clear=True):
+        registry = ApiRegistry(project=None)
+        status = registry.get_status()
+
+        assert status["is_gcp"] is False
+        assert registry.project is None
+
+
+def test_vertice_agent_instantiates_api_registry():
+    """Valida se o VerticeAgent instancia o ApiRegistry automaticamente."""
+    agent = MockAgent(project="test-project")
+
+    assert hasattr(agent, "apis")
+    assert isinstance(agent.apis, ApiRegistry)
+    assert agent.apis.project == "test-project"
+
+
+@pytest.mark.asyncio
+async def test_api_registry_discovery_safe_fail():
+    """Valida se a descoberta falha graciosamente sem o SDK ou credenciais."""
+    with patch("vertice_core.adk.registry.HAS_GENAI_SDK", False):
+        registry = ApiRegistry()
+        models = await registry.discover_models()
+        assert models == []
+
+
+@pytest.mark.asyncio
+async def test_api_registry_discovery_mocked():
+    """Valida o fluxo de descoberta com o SDK mockado."""
+    mock_client = MagicMock()
+
+    # Mock para client.aio.models.list
+    mock_model = MagicMock()
+    mock_model.name = "models/gemini-3-pro"
+    mock_model.display_name = "Gemini 3 Pro"
+
+    mock_response = MagicMock()
+    mock_response.models = [mock_model]
+
+    # Mock async
+    async def mock_list(*args, **kwargs):
+        return mock_response
+
+    mock_client.aio.models.list = mock_list
+
+    with patch("vertice_core.adk.registry.HAS_GENAI_SDK", True):
+        with patch("google.genai.Client", return_value=mock_client):
+            registry = ApiRegistry(project="test", location="global")
+            models = await registry.discover_models()
+
+            assert len(models) == 1
+            assert models[0]["name"] == "models/gemini-3-pro"
+            assert models[0]["display_name"] == "Gemini 3 Pro"