diff --git a/pyoaev/apis/__init__.py b/pyoaev/apis/__init__.py
index b21ef4a..67bea1d 100644
--- a/pyoaev/apis/__init__.py
+++ b/pyoaev/apis/__init__.py
@@ -1,3 +1,4 @@
+from .ai_target import *  # noqa: F401,F403
 from .attack_pattern import *  # noqa: F401,F403
 from .collector import *  # noqa: F401,F403
 from .cve import *  # noqa: F401,F403
diff --git a/pyoaev/apis/ai_target.py b/pyoaev/apis/ai_target.py
new file mode 100644
index 0000000..fb86676
--- /dev/null
+++ b/pyoaev/apis/ai_target.py
@@ -0,0 +1,30 @@
+from pyoaev.base import RESTManager, RESTObject
+from pyoaev.mixins import CreateMixin, DeleteMixin, GetMixin, ListMixin, UpdateMixin
+from pyoaev.utils import RequiredOptional
+
+
+class AiTarget(RESTObject):
+    _id_attr = "asset_id"
+
+
+class AiTargetManager(
+    GetMixin, ListMixin, CreateMixin, UpdateMixin, DeleteMixin, RESTManager
+):
+    """Manage AI Target assets (LLM endpoints / AI agents under adversarial test)."""
+
+    _path = "/ai_targets"
+    _obj_cls = AiTarget
+    _create_attrs = RequiredOptional(
+        required=("asset_name", "ai_target_provider"),
+        optional=(
+            "asset_description",
+            "asset_tags",
+            "asset_external_reference",
+            "ai_target_endpoint",
+            "ai_target_model",
+            "ai_target_modality",
+            "ai_target_system_prompt",
+            "ai_target_api_key_variable",
+            "ai_target_configuration",
+        ),
+    )
diff --git a/pyoaev/apis/inject_expectation/inject_expectation.py b/pyoaev/apis/inject_expectation/inject_expectation.py
index a669502..be1c453 100644
--- a/pyoaev/apis/inject_expectation/inject_expectation.py
+++ b/pyoaev/apis/inject_expectation/inject_expectation.py
@@ -1,4 +1,4 @@
-from typing import Any, Dict
+from typing import Any, Dict, List
 
 from pyoaev import exceptions as exc
 from pyoaev.apis.inject_expectation.model import (
@@ -40,6 +40,41 @@ def expectations_assets_for_source(
         )
         return result
 
+    @exc.on_http_error(exc.OpenAEVListError)
+    def ai_expectations_for_source(
+        self, source_id: str, **kwargs: Any
+    ) -> List[Dict[str, Any]]:
+        """Returns agentless DETECTION/PREVENTION expectations (AI adversarial injects) not yet
+        filled for the given source. Used by AI defense collectors (LLM firewall / guardrail).
+
+        :param source_id: the identifier of the collector requesting expectations
+        :type source_id: str
+        :raises OpenAEVParsingError: if the server does not return a JSON list of dicts
+        :return: a list of agentless detection/prevention expectation dicts
+        :rtype: list[dict]
+        """
+        path = f"{self.path}/ai/{source_id}"
+        # http_get is annotated Union[Dict, requests.Response]; widen to Any so the list
+        # validation below stays meaningful to type checkers, then build the result list
+        # explicitly to satisfy the declared return type.
+        raw: Any = self.openaev.http_get(path, **kwargs)
+        if not isinstance(raw, list):
+            raise exc.OpenAEVParsingError(
+                error_message=(
+                    f"Expected a list of AI expectations from {path}, "
+                    f"got {type(raw).__name__}"
+                )
+            )
+        for item in raw:
+            if not isinstance(item, dict):
+                raise exc.OpenAEVParsingError(
+                    error_message=(
+                        f"Expected AI expectation objects (dicts) from {path}, "
+                        f"got a list element of type {type(item).__name__}"
+                    )
+                )
+        return [item for item in raw]
+
     def expectations_models_for_source(self, source_id: str, **kwargs: Any):
         """Returns all expectations from OpenAEV that have had no result yet
             from the source_id (e.g. collector).
diff --git a/pyoaev/client.py b/pyoaev/client.py
index e478d43..f0f295f 100644
--- a/pyoaev/client.py
+++ b/pyoaev/client.py
@@ -74,6 +74,7 @@ def __init__(
         self.inject_expectation = apis.InjectExpectationManager(self)
         self.payload = apis.PayloadManager(self)
         self.security_platform = apis.SecurityPlatformManager(self)
+        self.ai_target = apis.AiTargetManager(self)
         self.inject_expectation_trace = apis.InjectExpectationTraceManager(self)
         self.signature = apis.SignatureApiManager(self)
         self.tag = apis.TagManager(self)
diff --git a/pyoaev/exceptions.py b/pyoaev/exceptions.py
index 046405a..cca8e84 100644
--- a/pyoaev/exceptions.py
+++ b/pyoaev/exceptions.py
@@ -180,6 +180,10 @@ class OpenAEVCreateError(OpenAEVError):
     pass
 
 
+class OpenAEVDeleteError(OpenAEVError):
+    pass
+
+
 class SignatureTransmissionError(OpenAEVError):
     """Signatures didn't make it. Validation rejected them, 4xx slammed the door, or retries ran dry."""
 
@@ -222,5 +226,7 @@ def wrapped_f(*args: Any, **kwargs: Any) -> Any:
     "OpenAEVListError",
     "OpenAEVGetError",
     "OpenAEVUpdateError",
+    "OpenAEVCreateError",
+    "OpenAEVDeleteError",
     "SignatureTransmissionError",
 ]
diff --git a/pyoaev/mixins.py b/pyoaev/mixins.py
index daaef47..6309e31 100644
--- a/pyoaev/mixins.py
+++ b/pyoaev/mixins.py
@@ -227,7 +227,7 @@ class DeleteMixin(_RestManagerBase):
     _path: Optional[str]
     openaev: pyoaev.OpenAEV
 
-    @exc.on_http_error(exc.OpenAEVCreateError)
+    @exc.on_http_error(exc.OpenAEVDeleteError)
     def delete(
         self, id: Optional[Union[str, int]] = None, **kwargs: Any
     ) -> requests.Response:
diff --git a/pyoaev/security_domain/types.py b/pyoaev/security_domain/types.py
index d13aeb4..c48e48c 100644
--- a/pyoaev/security_domain/types.py
+++ b/pyoaev/security_domain/types.py
@@ -13,4 +13,8 @@ class SecurityDomains(Enum):
     URL_FILTERING = {"domain_name": "URL Filtering", "domain_color": "#66CCFF"}
     CLOUD = {"domain_name": "Cloud", "domain_color": "#9999CC"}
     TABLE_TOP = {"domain_name": "Tabletop", "domain_color": "#FFCC33"}
+    ARTIFICIAL_INTELLIGENCE = {
+        "domain_name": "Artificial Intelligence",
+        "domain_color": "#7C4DFF",
+    }
     TOCLASSIFY = {"domain_name": "To classify", "domain_color": "#FFFFFF"}
diff --git a/pyoaev/signatures/ai_marker.py b/pyoaev/signatures/ai_marker.py
new file mode 100644
index 0000000..5116506
--- /dev/null
+++ b/pyoaev/signatures/ai_marker.py
@@ -0,0 +1,15 @@
+"""Deterministic per-inject canary marker shared by the AI red-team injector and the AI defense
+collectors.
+
+The marker is derived purely from the inject (and optional agent) id, so the injector that sends the
+attack and the collector that validates an AI defense response compute the same value independently,
+without the platform having to store it. It is emitted by the injector (request header + in-prompt
+token) and matched by collectors against guardrail / firewall logs.
+"""
+
+import hashlib
+
+
+def build_marker(inject_id: str, agent_id: str = "") -> str:
+    seed = f"{inject_id}:{agent_id}".encode("utf-8")
+    return "oaev" + hashlib.sha256(seed).hexdigest()[:16]
diff --git a/pyoaev/signatures/types.py b/pyoaev/signatures/types.py
index 0c4f78b..ff92b1c 100644
--- a/pyoaev/signatures/types.py
+++ b/pyoaev/signatures/types.py
@@ -37,3 +37,7 @@ class SignatureTypes(str, Enum):
     SIG_TYPE_CLOUD_REGION = "cloud_region"
     SIG_TYPE_TARGET_SERVICE = "target_service"
     SIG_TYPE_QUERY = "query"
+    # AI adversarial validation: correlate AI defense (LLM firewall / guardrail) events back to a
+    # specific AI inject execution.
+    SIG_TYPE_AI_REQUEST_MARKER = "ai_request_marker"
+    SIG_TYPE_AI_TARGET_ENDPOINT = "ai_target_endpoint"
diff --git a/test/apis/ai_target/test_ai_target.py b/test/apis/ai_target/test_ai_target.py
new file mode 100644
index 0000000..61ffceb
--- /dev/null
+++ b/test/apis/ai_target/test_ai_target.py
@@ -0,0 +1,89 @@
+from unittest import TestCase, main, mock
+
+
+def mock_response(*args, **kwargs):
+    class MockResponse:
+        def __init__(self):
+            self.status_code = 200
+            self.history = None
+            self.content = None
+            self.headers = {"Content-Type": "application/json"}
+
+        def json(self):
+            return {}
+
+    return MockResponse()
+
+
+class TestAiTargetManager(TestCase):
+    @mock.patch("requests.Session.request", side_effect=mock_response)
+    def test_create_posts_to_ai_targets(self, mock_request):
+        from pyoaev import OpenAEV
+
+        api_client = OpenAEV("url", "token")
+        data = {
+            "asset_name": "OpenAI guardrail",
+            "ai_target_provider": "openai",
+            "ai_target_endpoint": "https://api.openai.com/v1",
+        }
+
+        api_client.ai_target.create(data=data)
+
+        _, kwargs = mock_request.call_args
+        self.assertEqual(kwargs["method"], "post")
+        self.assertEqual(kwargs["url"], "url/api/ai_targets")
+        self.assertEqual(kwargs["json"], data)
+
+    @mock.patch("requests.Session.request", side_effect=mock_response)
+    def test_get_requests_single_ai_target(self, mock_request):
+        from pyoaev import OpenAEV
+
+        api_client = OpenAEV("url", "token")
+
+        api_client.ai_target.get("asset-123")
+
+        _, kwargs = mock_request.call_args
+        self.assertEqual(kwargs["method"], "get")
+        self.assertEqual(kwargs["url"], "url/api/ai_targets/asset-123")
+
+    @mock.patch("requests.Session.request", side_effect=mock_response)
+    def test_update_puts_to_ai_target(self, mock_request):
+        from pyoaev import OpenAEV
+
+        api_client = OpenAEV("url", "token")
+        new_data = {"asset_description": "updated"}
+
+        api_client.ai_target.update("asset-123", new_data=new_data)
+
+        _, kwargs = mock_request.call_args
+        self.assertEqual(kwargs["method"], "put")
+        self.assertEqual(kwargs["url"], "url/api/ai_targets/asset-123")
+        self.assertEqual(kwargs["json"], new_data)
+
+    @mock.patch("requests.Session.request", side_effect=mock_response)
+    def test_delete_calls_delete_on_ai_target(self, mock_request):
+        from pyoaev import OpenAEV
+
+        api_client = OpenAEV("url", "token")
+
+        api_client.ai_target.delete("asset-123")
+
+        _, kwargs = mock_request.call_args
+        self.assertEqual(kwargs["method"], "delete")
+        self.assertEqual(kwargs["url"], "url/api/ai_targets/asset-123")
+
+    def test_delete_http_error_is_mapped_to_delete_error(self):
+        from pyoaev import OpenAEV
+        from pyoaev.exceptions import OpenAEVDeleteError, OpenAEVHttpError
+
+        api_client = OpenAEV("url", "token")
+
+        with mock.patch.object(
+            OpenAEV, "http_delete", side_effect=OpenAEVHttpError("boom")
+        ):
+            with self.assertRaises(OpenAEVDeleteError):
+                api_client.ai_target.delete("asset-123")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/test/apis/inject_expectation/test_inject_expectation.py b/test/apis/inject_expectation/test_inject_expectation.py
new file mode 100644
index 0000000..eb42ea6
--- /dev/null
+++ b/test/apis/inject_expectation/test_inject_expectation.py
@@ -0,0 +1,69 @@
+from unittest import TestCase, main, mock
+
+from pyoaev import OpenAEV
+from pyoaev.exceptions import OpenAEVHttpError, OpenAEVListError, OpenAEVParsingError
+
+
+def make_json_response(payload):
+    class MockResponse:
+        def __init__(self):
+            self.status_code = 200
+            self.history = None
+            self.content = None
+            self.headers = {"Content-Type": "application/json"}
+
+        def json(self):
+            return payload
+
+    return MockResponse()
+
+
+class TestAiExpectationsForSource(TestCase):
+    @mock.patch("requests.Session.request")
+    def test_returns_list_of_expectations(self, mock_request):
+        expectations = [
+            {"inject_expectation_id": "exp-1"},
+            {"inject_expectation_id": "exp-2"},
+        ]
+        mock_request.return_value = make_json_response(expectations)
+        api_client = OpenAEV("url", "token")
+
+        result = api_client.inject_expectation.ai_expectations_for_source("collector-1")
+
+        mock_request.assert_called_once()
+        _, kwargs = mock_request.call_args
+        self.assertEqual(kwargs["method"], "get")
+        self.assertEqual(kwargs["url"], "url/api/injects/expectations/ai/collector-1")
+        self.assertEqual(result, expectations)
+
+    @mock.patch("requests.Session.request")
+    def test_raises_parsing_error_when_not_a_list(self, mock_request):
+        mock_request.return_value = make_json_response({"unexpected": "shape"})
+        api_client = OpenAEV("url", "token")
+
+        with self.assertRaises(OpenAEVParsingError):
+            api_client.inject_expectation.ai_expectations_for_source("collector-1")
+
+    @mock.patch("requests.Session.request")
+    def test_raises_parsing_error_when_elements_not_dicts(self, mock_request):
+        mock_request.return_value = make_json_response(["not", "a", "dict"])
+        api_client = OpenAEV("url", "token")
+
+        with self.assertRaises(OpenAEVParsingError) as ctx:
+            api_client.inject_expectation.ai_expectations_for_source("collector-1")
+
+        # The message should call out the offending element type, not just "list".
+        self.assertIn("str", str(ctx.exception))
+
+    def test_http_error_is_mapped_to_list_error(self):
+        api_client = OpenAEV("url", "token")
+
+        with mock.patch.object(
+            OpenAEV, "http_get", side_effect=OpenAEVHttpError("boom")
+        ):
+            with self.assertRaises(OpenAEVListError):
+                api_client.inject_expectation.ai_expectations_for_source("collector-1")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/test/signatures/test_ai_marker.py b/test/signatures/test_ai_marker.py
new file mode 100644
index 0000000..9d7151c
--- /dev/null
+++ b/test/signatures/test_ai_marker.py
@@ -0,0 +1,41 @@
+import unittest
+
+from pyoaev.signatures.ai_marker import build_marker
+
+
+class TestBuildMarker(unittest.TestCase):
+    def test_marker_has_expected_prefix_and_length(self):
+        marker = build_marker("inject-1", "agent-1")
+
+        self.assertTrue(marker.startswith("oaev"))
+        # "oaev" prefix (4 chars) + 16 hex chars from the sha256 digest.
+        self.assertEqual(len(marker), 20)
+        self.assertTrue(all(c in "0123456789abcdef" for c in marker[4:]))
+
+    def test_marker_is_deterministic_for_same_inputs(self):
+        self.assertEqual(
+            build_marker("inject-1", "agent-1"),
+            build_marker("inject-1", "agent-1"),
+        )
+
+    def test_marker_differs_for_different_inputs(self):
+        self.assertNotEqual(
+            build_marker("inject-1", "agent-1"),
+            build_marker("inject-2", "agent-1"),
+        )
+        self.assertNotEqual(
+            build_marker("inject-1", "agent-1"),
+            build_marker("inject-1", "agent-2"),
+        )
+
+    def test_agent_id_defaults_to_empty(self):
+        self.assertEqual(build_marker("inject-1"), build_marker("inject-1", ""))
+
+    def test_marker_value_is_stable_across_runs(self):
+        # Lock the exact value so the injector and collectors (potentially in
+        # other languages) stay byte-for-byte compatible.
+        self.assertEqual(build_marker("inject-1", "agent-1"), "oaev6457d87cba0698ab")
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/test/signatures/test_ai_signature_types.py b/test/signatures/test_ai_signature_types.py
new file mode 100644
index 0000000..0253362
--- /dev/null
+++ b/test/signatures/test_ai_signature_types.py
@@ -0,0 +1,29 @@
+import unittest
+
+from pyoaev.signatures.signature_type import SignatureType
+from pyoaev.signatures.types import MatchTypes, SignatureTypes
+
+
+class TestAiSignatureTypes(unittest.TestCase):
+    def test_ai_signature_type_values(self):
+        self.assertEqual(
+            SignatureTypes.SIG_TYPE_AI_REQUEST_MARKER.value, "ai_request_marker"
+        )
+        self.assertEqual(
+            SignatureTypes.SIG_TYPE_AI_TARGET_ENDPOINT.value, "ai_target_endpoint"
+        )
+
+    def test_ai_request_marker_usable_in_signature_type(self):
+        signature_type = SignatureType(
+            label=SignatureTypes.SIG_TYPE_AI_REQUEST_MARKER,
+            match_type=MatchTypes.MATCH_TYPE_SIMPLE,
+        )
+
+        struct = signature_type.make_struct_for_matching(data="oaevdeadbeef")
+
+        self.assertEqual(struct.get("type"), MatchTypes.MATCH_TYPE_SIMPLE.value)
+        self.assertEqual(struct.get("data"), "oaevdeadbeef")
+
+
+if __name__ == "__main__":
+    unittest.main()