diff --git a/libertai_agents/agents.py b/libertai_agents/agents.py
index d96919b..5fa4436 100644
--- a/libertai_agents/agents.py
+++ b/libertai_agents/agents.py
@@ -6,8 +6,9 @@
 from aiohttp import ClientSession
 from fastapi import APIRouter, FastAPI
 
-from libertai_agents.interfaces.common import Message, MessageRoleEnum, LlamaCppParams, MessageToolCall, \
-    ToolCallFunction, ToolCallMessage, CustomizableLlamaCppParams, ToolResponseMessage
+from libertai_agents.interfaces.llamacpp import CustomizableLlamaCppParams, LlamaCppParams
+from libertai_agents.interfaces.messages import Message, MessageRoleEnum, MessageToolCall, ToolCallFunction, \
+    ToolCallMessage, ToolResponseMessage
 from libertai_agents.interfaces.models import ModelInformation
 from libertai_agents.models import Model
 from libertai_agents.utils import find
@@ -18,10 +19,20 @@ class ChatAgent:
     system_prompt: str
     tools: list[Callable[..., Awaitable[Any]]]
     llamacpp_params: CustomizableLlamaCppParams
-    app: FastAPI
+    app: FastAPI | None
 
     def __init__(self, model: Model, system_prompt: str, tools: list[Callable[..., Awaitable[Any]]] | None = None,
-                 llamacpp_params: CustomizableLlamaCppParams = CustomizableLlamaCppParams()):
+                 llamacpp_params: CustomizableLlamaCppParams = CustomizableLlamaCppParams(),
+                 expose_api: bool = True):
+        """
+        Create a LibertAI chatbot agent that can answer to messages from users
+
+        :param model: The LLM you want to use, selected from the available ones
+        :param system_prompt: Customize the behavior of the agent with your own prompt
+        :param tools: List of functions that the agent can call. Each function must be asynchronous, have a docstring and return a stringifyable response
+        :param llamacpp_params: Override params given to llamacpp when calling the model
+        :param expose_api: Set at False to avoid exposing an API (useful if you are using a custom trigger)
+        """
         if tools is None:
             tools = []
 
@@ -32,18 +43,28 @@ def __init__(self, model: Model, system_prompt: str, tools: list[Callable[..., A
         self.tools = tools
         self.llamacpp_params = llamacpp_params
 
-        # Define API routes
-        router = APIRouter()
-        router.add_api_route("/generate-answer", self.generate_answer, methods=["POST"])
-        router.add_api_route("/model", self.get_model_information, methods=["GET"])
+        if expose_api:
+            # Define API routes
+            router = APIRouter()
+            router.add_api_route("/generate-answer", self.generate_answer, methods=["POST"])
+            router.add_api_route("/model", self.get_model_information, methods=["GET"])
 
-        self.app = FastAPI(title="LibertAI ChatAgent")
-        self.app.include_router(router)
+            self.app = FastAPI(title="LibertAI ChatAgent")
+            self.app.include_router(router)
 
     def get_model_information(self) -> ModelInformation:
+        """
+        Get information about the model powering this agent
+        """
         return ModelInformation(id=self.model.model_id, context_length=self.model.context_length)
 
     async def generate_answer(self, messages: list[Message]) -> str:
+        """
+        Generate an answer based on a conversation
+
+        :param messages: List of messages previously sent in this conversation
+        :return: The string response of the agent
+        """
         if len(messages) == 0:
             raise ValueError("No previous message to respond to")
         if messages[-1].role not in [MessageRoleEnum.user, MessageRoleEnum.tool]:
diff --git a/libertai_agents/interfaces/llamacpp.py b/libertai_agents/interfaces/llamacpp.py
new file mode 100644
index 0000000..c7f257e
--- /dev/null
+++ b/libertai_agents/interfaces/llamacpp.py
@@ -0,0 +1,9 @@
+from pydantic import BaseModel
+
+
+class CustomizableLlamaCppParams(BaseModel):
+    stream: bool = False
+
+
+class LlamaCppParams(CustomizableLlamaCppParams):
+    prompt: str
diff --git a/libertai_agents/interfaces/common.py b/libertai_agents/interfaces/messages.py
similarity index 82%
rename from libertai_agents/interfaces/common.py
rename to libertai_agents/interfaces/messages.py
index 470c14a..dfdddce 100644
--- a/libertai_agents/interfaces/common.py
+++ b/libertai_agents/interfaces/messages.py
@@ -34,11 +34,3 @@ class ToolCallMessage(Message):
 class ToolResponseMessage(Message):
     name: Optional[str] = None
     tool_call_id: Optional[str] = None
-
-
-class CustomizableLlamaCppParams(BaseModel):
-    stream: bool = False
-
-
-class LlamaCppParams(CustomizableLlamaCppParams):
-    prompt: str
diff --git a/libertai_agents/models/base.py b/libertai_agents/models/base.py
index 295eb9e..1a084cc 100644
--- a/libertai_agents/models/base.py
+++ b/libertai_agents/models/base.py
@@ -2,7 +2,7 @@
 from abc import ABC, abstractmethod
 from typing import Literal
 
-from libertai_agents.interfaces.common import Message, ToolCallFunction, MessageRoleEnum
+from libertai_agents.interfaces.messages import Message, ToolCallFunction, MessageRoleEnum
 
 # Disables the error about models not available
 logging.getLogger("transformers").disabled = True
@@ -37,6 +37,14 @@ def __count_tokens(self, content: str) -> int:
         return len(tokens)
 
     def generate_prompt(self, messages: list[Message], system_prompt: str, tools: list) -> str:
+        """
+        Generate the whole chat prompt
+
+        :param messages: Messages conversation history
+        :param system_prompt: Prompt to include in the beginning
+        :param tools: Available tools
+        :return: Prompt string
+        """
         system_message = Message(role=MessageRoleEnum.system, content=system_prompt)
         raw_messages = list(map(lambda x: x.model_dump(), messages))
 
@@ -52,6 +60,11 @@ def generate_prompt(self, messages: list[Message], system_prompt: str, tools: li
         raise ValueError(f"Can't fit messages into the available context length ({self.context_length} tokens)")
 
     def generate_tool_call_id(self) -> str | None:
+        """
+        Generate a random ID for a tool call
+        
+        :return: A string, or None if this model doesn't require a tool call ID
+        """
         return None
 
     @staticmethod
diff --git a/libertai_agents/models/hermes.py b/libertai_agents/models/hermes.py
index 3ca37ee..8e85c6a 100644
--- a/libertai_agents/models/hermes.py
+++ b/libertai_agents/models/hermes.py
@@ -1,12 +1,12 @@
 import json
 import re
 
-from libertai_agents.interfaces.common import ToolCallFunction
-from libertai_agents.models.base import Model
+from libertai_agents.interfaces.messages import ToolCallFunction
+from libertai_agents.models.base import Model, ModelId
 
 
 class HermesModel(Model):
-    def __init__(self, model_id: str, vm_url: str, context_length: int):
+    def __init__(self, model_id: ModelId, vm_url: str, context_length: int):
         super().__init__(model_id=model_id, vm_url=vm_url, context_length=context_length)
 
     @staticmethod
diff --git a/libertai_agents/models/mistral.py b/libertai_agents/models/mistral.py
index 3bf424f..ed98841 100644
--- a/libertai_agents/models/mistral.py
+++ b/libertai_agents/models/mistral.py
@@ -2,12 +2,12 @@
 import random
 import string
 
-from libertai_agents.interfaces.common import ToolCallFunction
-from libertai_agents.models.base import Model
+from libertai_agents.interfaces.messages import ToolCallFunction
+from libertai_agents.models.base import Model, ModelId
 
 
 class MistralModel(Model):
-    def __init__(self, model_id: str, vm_url: str, context_length: int):
+    def __init__(self, model_id: ModelId, vm_url: str, context_length: int):
         super().__init__(model_id=model_id, vm_url=vm_url, context_length=context_length, system_message=False)
 
     @staticmethod
diff --git a/libertai_agents/models/models.py b/libertai_agents/models/models.py
index 67c4b87..b06a927 100644
--- a/libertai_agents/models/models.py
+++ b/libertai_agents/models/models.py
@@ -32,6 +32,13 @@ class ModelConfiguration(BaseModel):
 
 
 def get_model(model_id: ModelId, hf_token: str | None = None) -> Model:
+    """
+    Get one of the available models
+
+    :param model_id: HuggingFace ID of the model, must be one of the supported models
+    :param hf_token: Optional access token, required to use gated models
+    :return: An instance of the model
+    """
     model_configuration = MODELS_CONFIG.get(model_id)
 
     if model_configuration is None:
diff --git a/libertai_agents/tools.py b/libertai_agents/tools.py
deleted file mode 100644
index c859a3d..0000000
--- a/libertai_agents/tools.py
+++ /dev/null
@@ -1,11 +0,0 @@
-async 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.  # A real function should probably actually get the temperature!
diff --git a/main.py b/main.py
index 50107f3..e451bb1 100644
--- a/main.py
+++ b/main.py
@@ -1,6 +1,19 @@
 from libertai_agents.agents import ChatAgent
 from libertai_agents.models import get_model
-from libertai_agents.tools import get_current_temperature
+
+
+async 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.  # A real function should probably actually get the temperature!
+
 
 agent = ChatAgent(model=get_model("NousResearch/Hermes-2-Pro-Llama-3-8B"),
                   system_prompt="You are a helpful assistant",