diff --git a/.github/workflows/maintests.yml b/.github/workflows/maintests.yml
index fd458cb..51edb84 100644
--- a/.github/workflows/maintests.yml
+++ b/.github/workflows/maintests.yml
@@ -19,8 +19,9 @@ jobs:
   build:
     env:
       AIWORKER_CACHE_HOME: ${{ github.workspace }}/.cache
-      HORDE_MODEL_REFERENCE_MAKE_FOLDERS: 1
       TESTS_ONGOING: 1
+      HORDE_SDK_TESTING: 1
+      HORDE_MODEL_REFERENCE_MAKE_FOLDERS: 1
     runs-on: ubuntu-latest
     strategy:
       matrix:
diff --git a/.github/workflows/prtests.yml b/.github/workflows/prtests.yml
index 38990ce..144c384 100644
--- a/.github/workflows/prtests.yml
+++ b/.github/workflows/prtests.yml
@@ -23,6 +23,7 @@ jobs:
     env:
       AIWORKER_CACHE_HOME: ${{ github.workspace }}/.cache
       TESTS_ONGOING: 1
+      HORDE_SDK_TESTING: 1
       HORDE_MODEL_REFERENCE_MAKE_FOLDERS: 1
     runs-on: ubuntu-latest
     strategy:
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 463a2a7..51ad9fc 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -21,12 +21,13 @@ repos:
         pass_filenames: false
         additional_dependencies: [
             pytest,
-            pydantic,
+            pydantic==2.7.4,
             types-Pillow,
             types-requests,
             types-pytz,
             types-setuptools,
             types-urllib3,
             types-aiofiles,
-            StrEnum
+            StrEnum,
+            horde_model_reference==0.8.1,
         ]
diff --git a/horde_sdk/ai_horde_api/apimodels/base.py b/horde_sdk/ai_horde_api/apimodels/base.py
index 0d410ea..12f5943 100644
--- a/horde_sdk/ai_horde_api/apimodels/base.py
+++ b/horde_sdk/ai_horde_api/apimodels/base.py
@@ -219,7 +219,7 @@ class ImageGenerateParamMixin(HordeAPIDataObject):
     karras: bool = True
     """Set to True if you want to use the Karras scheduling."""
     tiling: bool = False
-    """Deprecated."""
+    """Set to True if you want to use seamless tiling."""
     hires_fix: bool = False
     """Set to True if you want to use the hires fix."""
     hires_fix_denoising_strength: float | None = Field(default=None, ge=0, le=1)
@@ -234,17 +234,17 @@ class ImageGenerateParamMixin(HordeAPIDataObject):
     """Set to True if you want the ControlNet map returned instead of a generated image."""
     facefixer_strength: float | None = Field(default=None, ge=0, le=1)
     """The strength of the facefixer model."""
-    loras: list[LorasPayloadEntry] = Field(default_factory=list)
+    loras: list[LorasPayloadEntry] | None = None
     """A list of lora parameters to use."""
-    tis: list[TIPayloadEntry] = Field(default_factory=list)
+    tis: list[TIPayloadEntry] | None = None
     """A list of textual inversion (embedding) parameters to use."""
-    extra_texts: list[ExtraTextEntry] = Field(default_factory=list)
+    extra_texts: list[ExtraTextEntry] | None = None
     """A list of extra texts and prompts to use in the comfyUI workflow."""
     workflow: str | KNOWN_WORKFLOWS | None = None
     """The specific comfyUI workflow to use."""
     transparent: bool | None = None
     """When true, will generate an image with a transparent background"""
-    special: dict[Any, Any] = Field(default_factory=dict)
+    special: dict[Any, Any] | None = None
     """Reserved for future use."""
     use_nsfw_censor: bool = False
     """If the request is SFW, and the worker accidentally generates NSFW, it will send back a censored image."""
diff --git a/horde_sdk/ai_horde_api/apimodels/generate/_pop.py b/horde_sdk/ai_horde_api/apimodels/generate/_pop.py
index 03c5514..7de8309 100644
--- a/horde_sdk/ai_horde_api/apimodels/generate/_pop.py
+++ b/horde_sdk/ai_horde_api/apimodels/generate/_pop.py
@@ -253,8 +253,15 @@ def validate_id(cls, v: str | JobID) -> JobID | str:
 
         return v
 
+    _ids_present: bool = False
+
+    @property
+    def ids_present(self) -> bool:
+        """Whether or not the IDs are present."""
+        return self._ids_present
+
     @model_validator(mode="after")
-    def ids_present(self) -> ImageGenerateJobPopResponse:
+    def validate_ids_present(self) -> ImageGenerateJobPopResponse:
         """Ensure that either id_ or ids is present."""
         if self.model is None:
             if self.skipped.is_empty():
@@ -270,6 +277,8 @@ def ids_present(self) -> ImageGenerateJobPopResponse:
             logger.debug("Sorting IDs")
             self.ids.sort()
 
+        self._ids_present = True
+
         return self
 
     @override
@@ -418,11 +427,9 @@ class PopInput(HordeAPIObject):
         max_length=1000,
     )
     """The worker name, version and website."""
-    models: list[str] | None = None
+    models: list[str]
     """The models this worker can generate."""
-    name: str | None = Field(
-        None,
-    )
+    name: str
     """The Name of the Worker."""
     nsfw: bool | None = Field(
         False,
diff --git a/horde_sdk/generic_api/apimodels.py b/horde_sdk/generic_api/apimodels.py
index 79b5243..377f03a 100644
--- a/horde_sdk/generic_api/apimodels.py
+++ b/horde_sdk/generic_api/apimodels.py
@@ -79,9 +79,14 @@ def get_extra_fields_to_exclude_from_log(self) -> set[str]:
         """Return an additional set of fields to exclude from the log_safe_model_dump method."""
         return set()
 
-    def log_safe_model_dump(self) -> dict[Any, Any]:
+    def log_safe_model_dump(self, extra_exclude: set[str] | None = None) -> dict[Any, Any]:
         """Return a dict of the model's fields, with any sensitive fields redacted."""
-        return self.model_dump(exclude=self.get_sensitive_fields() | self.get_extra_fields_to_exclude_from_log())
+        if extra_exclude is None:
+            extra_exclude = set()
+
+        return self.model_dump(
+            exclude=self.get_sensitive_fields() | self.get_extra_fields_to_exclude_from_log() | extra_exclude,
+        )
 
 
 class HordeResponse(HordeAPIMessage):
diff --git a/pyproject.toml b/pyproject.toml
index a9d3523..74a6393 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -128,7 +128,9 @@ exclude = [
 concurrency = ["gevent"]
 
 [tool.pytest.ini_options]
+# You can use `and`, `or`, `not` and parentheses to filter with the `-m` option
 markers = [
-    # "slow: marks tests as slow (deselect with '-m \"not slow\"')",
+    "slow: marks tests as slow (deselect with '-m \"not slow\"')",
     "object_verify: marks tests that verify the API object structure and layout",
+    "api_side_ci: indicates that the test is intended to run during CI for the API",
 ]
diff --git a/requirements.txt b/requirements.txt
index d6d29b6..1e9eff4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
-horde_model_reference~=0.7.0
+horde_model_reference~=0.8.1
 
-pydantic
+pydantic==2.7.4
 requests
 StrEnum
 loguru
diff --git a/tests/ai_horde_api/test_ai_worker_roundtrip_api_calls.py b/tests/ai_horde_api/test_ai_worker_roundtrip_api_calls.py
new file mode 100644
index 0000000..2a6fb8d
--- /dev/null
+++ b/tests/ai_horde_api/test_ai_worker_roundtrip_api_calls.py
@@ -0,0 +1,174 @@
+import asyncio
+
+import aiohttp
+import PIL.Image
+import pytest
+import yarl
+from loguru import logger
+
+from horde_sdk.ai_horde_api.ai_horde_clients import (
+    AIHordeAPIAsyncClientSession,
+    AIHordeAPIAsyncSimpleClient,
+)
+from horde_sdk.ai_horde_api.apimodels import (
+    ImageGenerateAsyncRequest,
+    ImageGenerateJobPopRequest,
+    ImageGenerateJobPopResponse,
+    ImageGenerateStatusResponse,
+    ImageGenerationJobSubmitRequest,
+    JobSubmitResponse,
+)
+from horde_sdk.ai_horde_api.consts import (
+    GENERATION_STATE,
+)
+from horde_sdk.ai_horde_api.fields import JobID
+
+
+class TestImageWorkerRoundtrip:
+    async def fake_worker_checkin(
+        self,
+        aiohttp_session: aiohttp.ClientSession,
+        horde_client_session: AIHordeAPIAsyncClientSession,
+        image_gen_request: ImageGenerateAsyncRequest,
+    ) -> None:
+        assert image_gen_request.params is not None
+
+        effective_resolution = (image_gen_request.params.width * image_gen_request.params.height) * 2
+
+        job_pop_request = ImageGenerateJobPopRequest(
+            name="fake CI worker",
+            bridge_agent="AI Horde Worker reGen:8.0.1-citests:https://github.com/Haidra-Org/horde-worker-reGen",
+            max_pixels=effective_resolution,
+            models=image_gen_request.models,
+        )
+
+        job_pop_response = await horde_client_session.submit_request(
+            job_pop_request,
+            job_pop_request.get_default_success_response_type(),
+        )
+
+        assert isinstance(job_pop_response, ImageGenerateJobPopResponse)
+        logger.info(f"{job_pop_response.log_safe_model_dump({'skipped'})}")
+
+        assert not job_pop_response.ids_present
+        assert job_pop_response.skipped is not None
+
+        logger.info(f"Checked in as fake worker ({effective_resolution}): {job_pop_response.skipped}")
+
+    async def fake_worker(
+        self,
+        aiohttp_session: aiohttp.ClientSession,
+        horde_client_session: AIHordeAPIAsyncClientSession,
+        image_gen_request: ImageGenerateAsyncRequest,
+    ) -> None:
+        assert image_gen_request.params is not None
+
+        effective_resolution = (image_gen_request.params.width * image_gen_request.params.height) * 2
+
+        job_pop_request = ImageGenerateJobPopRequest(
+            name="fake CI worker",
+            bridge_agent="AI Horde Worker reGen:8.0.1-citests:https://github.com/Haidra-Org/horde-worker-reGen",
+            max_pixels=effective_resolution,
+            models=image_gen_request.models,
+        )
+
+        max_tries = 5
+        try_wait = 5
+        current_try = 0
+
+        while True:
+            job_pop_response = await horde_client_session.submit_request(
+                job_pop_request,
+                job_pop_request.get_default_success_response_type(),
+            )
+
+            assert isinstance(job_pop_response, ImageGenerateJobPopResponse)
+            logger.info(f"{job_pop_response.log_safe_model_dump({'skipped'})}")
+            logger.info(f"Checked in as fake worker ({effective_resolution}): {job_pop_response.skipped}")
+
+            if not job_pop_response.ids_present:
+                if current_try >= max_tries:
+                    raise RuntimeError("Max tries exceeded")
+
+                logger.info(f"Waiting {try_wait} seconds before retrying")
+                await asyncio.sleep(try_wait)
+                current_try += 1
+                continue
+
+            # We're going to send a blank image base64 encoded
+            fake_image = PIL.Image.new(
+                "RGB",
+                (image_gen_request.params.width, image_gen_request.params.height),
+                (255, 255, 255),
+            )
+
+            fake_image_bytes = fake_image.tobytes()
+
+            r2_url = job_pop_response.r2_upload
+
+            assert r2_url is not None
+
+            async with aiohttp_session.put(
+                yarl.URL(r2_url, encoded=True),
+                data=fake_image_bytes,
+                skip_auto_headers=["content-type"],
+                timeout=aiohttp.ClientTimeout(total=10),
+            ) as response:
+                assert response.status == 200
+
+            assert job_pop_response.ids is not None
+            assert len(job_pop_response.ids) == 1
+
+            job_submit_request = ImageGenerationJobSubmitRequest(
+                id=job_pop_response.ids[0],
+                state=GENERATION_STATE.ok,
+                generation="R2",
+                seed="1312",
+            )
+
+            job_submit_response = await horde_client_session.submit_request(
+                job_submit_request,
+                job_submit_request.get_default_success_response_type(),
+            )
+
+            assert isinstance(job_submit_response, JobSubmitResponse)
+            assert job_submit_response.reward is not None and job_submit_response.reward > 0
+
+            break
+
+    @pytest.mark.api_side_ci
+    @pytest.mark.asyncio
+    async def test_basic_image_roundtrip(self, simple_image_gen_request: ImageGenerateAsyncRequest) -> None:
+        aiohttp_session = aiohttp.ClientSession()
+        horde_client_session = AIHordeAPIAsyncClientSession(aiohttp_session)
+
+        async with aiohttp_session, horde_client_session:
+            simple_client = AIHordeAPIAsyncSimpleClient(horde_client_session=horde_client_session)
+
+            await self.fake_worker_checkin(aiohttp_session, horde_client_session, simple_image_gen_request)
+
+            image_gen_task = asyncio.create_task(simple_client.image_generate_request(simple_image_gen_request))
+
+            fake_worker_task = asyncio.create_task(
+                self.fake_worker(
+                    aiohttp_session,
+                    horde_client_session,
+                    simple_image_gen_request,
+                ),
+            )
+
+            await asyncio.gather(image_gen_task, fake_worker_task)
+
+            image_gen_response, job_id = image_gen_task.result()
+
+            assert isinstance(image_gen_response, ImageGenerateStatusResponse)
+            assert isinstance(job_id, JobID)
+
+            assert len(image_gen_response.generations) == 1
+
+            generation = image_gen_response.generations[0]
+            assert generation.seed == "1312"
+            assert generation.img is not None
+            assert not generation.gen_metadata
+
+            assert generation.censored is False
diff --git a/tests/conftest.py b/tests/conftest.py
index d29c349..bdec2f1 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -3,6 +3,7 @@
 import pathlib
 
 import pytest
+from loguru import logger
 
 os.environ["TESTS_ONGOING"] = "1"
 
@@ -15,6 +16,21 @@ def check_tests_ongoing_env_var() -> None:
     """Checks that the TESTS_ONGOING environment variable is set."""
     assert os.getenv("TESTS_ONGOING", None) is not None, "TESTS_ONGOING environment variable not set"
 
+    AI_HORDE_TESTING = os.getenv("AI_HORDE_TESTING", None)
+    HORDE_SDK_TESTING = os.getenv("HORDE_SDK_TESTING", None)
+    if AI_HORDE_TESTING is None and HORDE_SDK_TESTING is None:
+        logger.warning(
+            "Neither AI_HORDE_TESTING nor HORDE_SDK_TESTING environment variables are set. "
+            "Is this a local development test run? If so, set AI_HORDE_TESTING=1 or HORDE_SDK_TESTING=1 to suppress "
+            "this warning",
+        )
+
+    if AI_HORDE_TESTING is not None:
+        logger.info("AI_HORDE_TESTING environment variable set.")
+
+    if HORDE_SDK_TESTING is not None:
+        logger.info("HORDE_SDK_TESTING environment variable set.")
+
 
 @pytest.fixture(scope="session")
 def ai_horde_api_key() -> str:
@@ -30,7 +46,7 @@ def simple_image_gen_request(ai_horde_api_key: str) -> ImageGenerateAsyncRequest
         prompt="a cat in a hat",
         models=["Deliberate"],
         params=ImageGenerationInputPayload(
-            steps=1,
+            steps=5,
             n=1,
         ),
     )
diff --git a/tox.ini b/tox.ini
index 0d0db14..ac5c805 100644
--- a/tox.ini
+++ b/tox.ini
@@ -14,6 +14,8 @@ skip_empty = True
 description = base evironment
 passenv =
     AIWORKER_CACHE_HOME
+    HORDE_SDK_TESTING
+    AI_HORDE_TESTING
     TESTS_ONGOING
 
 [testenv:pre-commit]
@@ -33,7 +35,7 @@ deps =
     requests
     -r requirements.txt
 commands =
-    pytest tests {posargs} --cov
+    pytest tests {posargs} --cov -m "not api_side_ci"
 
 
 [testenv:tests-no-api-calls]
@@ -48,4 +50,4 @@ deps =
     requests
     -r requirements.txt
 commands =
-    pytest tests {posargs} --ignore-glob=*api_calls.py --cov
+    pytest tests {posargs} --ignore-glob=*api_calls.py -m "not api_side_ci"