diff --git a/codecov.yaml b/codecov.yaml
new file mode 100644
index 0000000..0a54b34
--- /dev/null
+++ b/codecov.yaml
@@ -0,0 +1,10 @@
+coverage:
+  status:
+    patch:
+      default:
+        threshold: 5
+        target: 0%
+    project:
+      default:
+        threshold: 5
+        target: 60%
diff --git a/libertai_agents/libertai_agents/agents.py b/libertai_agents/libertai_agents/agents.py
index 2ac94c7..e36079f 100644
--- a/libertai_agents/libertai_agents/agents.py
+++ b/libertai_agents/libertai_agents/agents.py
@@ -179,7 +179,7 @@ async def __dump_api_generate_streamed_answer(
         async for message in self.generate_answer(
             messages, only_final_answer=only_final_answer
         ):
-            yield json.dumps(message.dict(), indent=4)
+            yield json.dumps(message.model_dump(), indent=4)
 
     async def __call_model(self, session: ClientSession, prompt: str) -> str | None:
         """
@@ -189,9 +189,11 @@ async def __call_model(self, session: ClientSession, prompt: str) -> str | None:
         :param prompt: Prompt to give to the model
         :return: String response (if no error)
         """
-        params = LlamaCppParams(prompt=prompt, **self.llamacpp_params.dict())
+        params = LlamaCppParams(prompt=prompt, **self.llamacpp_params.model_dump())
 
-        async with session.post(self.model.vm_url, json=params.dict()) as response:
+        async with session.post(
+            self.model.vm_url, json=params.model_dump()
+        ) as response:
             # TODO: handle errors and retries
             if response.status == HTTPStatus.OK:
                 response_data = await response.json()
diff --git a/libertai_agents/libertai_agents/models/base.py b/libertai_agents/libertai_agents/models/base.py
index 4b721d1..29c0c94 100644
--- a/libertai_agents/libertai_agents/models/base.py
+++ b/libertai_agents/libertai_agents/models/base.py
@@ -74,7 +74,7 @@ def generate_prompt(
             if self.include_system_message and system_prompt is not None
             else []
         )
-        raw_messages = [x.dict() for x in messages]
+        raw_messages = [x.model_dump() for x in messages]
 
         for i in range(len(raw_messages)):
             included_messages: list = system_messages + raw_messages[i:]
diff --git a/libertai_agents/libertai_agents/models/models.py b/libertai_agents/libertai_agents/models/models.py
index 97bfbfa..2e41709 100644
--- a/libertai_agents/libertai_agents/models/models.py
+++ b/libertai_agents/libertai_agents/models/models.py
@@ -62,5 +62,5 @@ def get_model(
     )
 
     return full_config.constructor(
-        model_id=model_id, **configuration.dict(exclude={"constructor"})
+        model_id=model_id, **configuration.model_dump(exclude={"constructor"})
     )
diff --git a/libertai_agents/tests/conftest.py b/libertai_agents/tests/conftest.py
new file mode 100644
index 0000000..ec7fead
--- /dev/null
+++ b/libertai_agents/tests/conftest.py
@@ -0,0 +1 @@
+from tests.fixtures.fixtures_tools import *  # noqa: F401, F403
diff --git a/libertai_agents/tests/fixtures/__init__.py b/libertai_agents/tests/fixtures/__init__.py
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/libertai_agents/tests/fixtures/__init__.py
@@ -0,0 +1 @@
+
diff --git a/libertai_agents/tests/fixtures/fixtures_tools.py b/libertai_agents/tests/fixtures/fixtures_tools.py
new file mode 100644
index 0000000..8226100
--- /dev/null
+++ b/libertai_agents/tests/fixtures/fixtures_tools.py
@@ -0,0 +1,20 @@
+from typing import Callable
+
+import pytest
+
+
+@pytest.fixture()
+def basic_function_for_tool() -> Callable:
+    def get_current_temperature(location: str, unit: str) -> float:
+        """
+        Get the current temperature at a location.
+
+        Args:
+            location: The location to get the temperature for, in the format "City, Country"
+            unit: The unit to return the temperature in. (choices: ["celsius", "fahrenheit"])
+        Returns:
+            The current temperature at the specified location in the specified units, as a float.
+        """
+        return 22.0  # A real function should probably actually get the temperature!
+
+    return get_current_temperature
diff --git a/libertai_agents/tests/test_agents.py b/libertai_agents/tests/test_agents.py
new file mode 100644
index 0000000..f8dda51
--- /dev/null
+++ b/libertai_agents/tests/test_agents.py
@@ -0,0 +1,35 @@
+from fastapi import FastAPI
+
+from libertai_agents.agents import ChatAgent
+from libertai_agents.interfaces.tools import Tool
+from libertai_agents.models import get_model
+from libertai_agents.models.base import ModelId
+from libertai_agents.models.models import ModelConfiguration
+
+MODEL_ID: ModelId = "NousResearch/Hermes-3-Llama-3.1-8B"
+
+
+def test_create_chat_agent_minimal():
+    agent = ChatAgent(model=get_model(MODEL_ID))
+
+    assert len(agent.tools) == 0
+    assert agent.model.model_id == MODEL_ID
+    assert isinstance(agent.app, FastAPI)
+
+
+def test_create_chat_agent_with_config(basic_function_for_tool):
+    context_length = 42
+
+    agent = ChatAgent(
+        model=get_model(
+            MODEL_ID,
+            custom_configuration=ModelConfiguration(
+                vm_url="https://example.org", context_length=context_length
+            ),
+        ),
+        tools=[Tool.from_function(basic_function_for_tool)],
+        expose_api=False,
+    )
+    assert agent.model.context_length == context_length
+    assert not hasattr(agent, "app")
+    assert len(agent.tools) == 1
diff --git a/libertai_agents/tests/test_models.py b/libertai_agents/tests/test_models.py
new file mode 100644
index 0000000..78b267d
--- /dev/null
+++ b/libertai_agents/tests/test_models.py
@@ -0,0 +1,14 @@
+import pytest
+
+from libertai_agents.models import Model, get_model
+
+
+def test_get_model_basic():
+    model = get_model("NousResearch/Hermes-3-Llama-3.1-8B")
+
+    assert isinstance(model, Model)
+
+
+def test_get_model_invalid_id():
+    with pytest.raises(ValueError):
+        _model = get_model(model_id="random-string")  # type: ignore
diff --git a/libertai_agents/tests/tools/test_function_tools.py b/libertai_agents/tests/tools/test_function_tools.py
new file mode 100644
index 0000000..f043378
--- /dev/null
+++ b/libertai_agents/tests/tools/test_function_tools.py
@@ -0,0 +1,9 @@
+from libertai_agents.interfaces.tools import Tool
+
+
+def test_function_example_tool(basic_function_for_tool):
+    libertai_tool = Tool.from_function(basic_function_for_tool)
+    assert libertai_tool.name == basic_function_for_tool.__name__
+
+
+# TODO: add test with Python 3.10+ union style when https://github.com/huggingface/transformers/pull/35103 merged + new release
diff --git a/libertai_agents/tests/tools/test_langchain_tools.py b/libertai_agents/tests/tools/test_langchain_tools.py
index d12c255..4b3c0b1 100644
--- a/libertai_agents/tests/tools/test_langchain_tools.py
+++ b/libertai_agents/tests/tools/test_langchain_tools.py
@@ -8,6 +8,7 @@
 from libertai_agents.interfaces.tools import Tool
 from libertai_agents.utils import find
 
+# TODO: uncomment when https://huggingface.co/spaces/lysandre/hf-model-downloads/discussions/1 is merged
 # def test_langchain_huggingface_hub_tool():
 #     # https://python.langchain.com/docs/integrations/tools/huggingface_tools/
 #     tool = load_huggingface_tool("lysandre/hf-model-downloads")
@@ -73,3 +74,8 @@ def test_langchain_requests_tools():
     libertai_tools = [Tool.from_langchain(t) for t in tools]
     get_tool = find(lambda t: t.name == "requests_get", libertai_tools)
     assert get_tool is not None
+
+
+# TODO: add tests for the following tools:
+# https://python.langchain.com/docs/integrations/tools/nasa/
+# https://python.langchain.com/docs/integrations/tools/openweathermap/