Improve Readme example

README.md

@@ -50,7 +50,7 @@ from smolagents import CodeAgent, DuckDuckGoSearchTool, HfApiModel
 
 agent = CodeAgent(tools=[DuckDuckGoSearchTool()], model=HfApiModel())
 
-agent.run("What time would the world's fastest car take to travel from New York to San Francisco?")
+agent.run("What time would it take for a leopard at full speed to run through Pont des Arts?")
 ```
 
 > TODO: Add video

docs/source/guided_tour.md

@@ -23,33 +23,10 @@ In this guided visit, you will learn how to build an agent, how to run it, and h
 
 To initialize a minimal agent, you need at least these two arguments:
 
-- An LLM to power your agent - because the agent is different from a simple LLM, it is a system that uses a LLM as its engine.
+- An text-generation model to power your agent - because the agent is different from a simple LLM, it is a system that uses a LLM as its engine.
 - A list of tools from which the agent pick tools to execute
 
-For defining your LLM, you can make a `custom_model` method which accepts a list of [messages](./chat_templating) and returns text. This callable also needs to accept a `stop_sequences` argument that indicates when to stop generating.
-
-```python
-from huggingface_hub import login, InferenceClient
-
-login("<YOUR_HUGGINGFACEHUB_API_TOKEN>")
-
-model_id = "meta-llama/Llama-3.3-70B-Instruct"
-
-client = InferenceClient(model=model_id)
-
-def custom_model(messages, stop_sequences=["Task"]) -> str:
-    response = client.chat_completion(messages, stop=stop_sequences, max_tokens=1000)
-    answer = response.choices[0].message.content
-    return answer
-```
-
-You could use any `custom_model` method as long as:
-1. it follows the [messages format](./chat_templating) (`List[Dict[str, str]]`) for its input `messages`, and it returns a `str`.
-2. it stops generating outputs at the sequences passed in the argument `stop_sequences`
-
-Additionally, `custom_model` can also take a `grammar` argument. In the case where you specify a `grammar` upon agent initialization, this argument will be passed to the calls to model, with the `grammar` that you defined upon initialization, to allow [constrained generation](https://huggingface.co/docs/text-generation-inference/conceptual/guidance) in order to force properly-formatted agent outputs.
-
-For convenience, we provide pre-built classes for your model engine:
+For your model, you can use any of these options:
 - [`TransformersModel`] takes a pre-initialized `transformers` pipeline to run inference on your local machine using `transformers`.
 - [`HfApiModel`] leverages a `huggingface_hub.InferenceClient` under the hood.
 - We also provide [`LiteLLMModel`], which lets you call 100+ different models through [LiteLLM](https://docs.litellm.ai/)!
@@ -60,6 +37,11 @@ Once you have these two arguments, `tools` and `model`,  you can create an agent
 
 ```python
 from smolagents import CodeAgent, HfApiModel
+from huggingface_hub import login
+
+login("<YOUR_HUGGINGFACEHUB_API_TOKEN>")
+
+model_id = "meta-llama/Llama-3.3-70B-Instruct"
 
 model = HfApiModel(model_id=model_id)
 agent = CodeAgent(tools=[], model=model, add_base_tools=True)

docs/source/reference/agents.md

@@ -57,10 +57,30 @@ We provide two types of agents, based on the main [`Agent`] class.
 
 ## Models
 
-You're free to create and use your own engines to be usable by the Agents framework.
-These engines have the following specification:
-1. Follow the [messages format](../chat_templating.md) for its input (`List[Dict[str, str]]`) and return a string.
-2. Stop generating outputs *before* the sequences passed in the argument `stop_sequences`
+You're free to create and use your own models to power your agent.
+
+You could use any `model` callable for your agent, as long as:
+1. It follows the [messages format](./chat_templating) (`List[Dict[str, str]]`) for its input `messages`, and it returns a `str`.
+2. It stops generating outputs *before* the sequences passed in the argument `stop_sequences`
+
+For defining your LLM, you can make a `custom_model` method which accepts a list of [messages](./chat_templating) and returns text. This callable also needs to accept a `stop_sequences` argument that indicates when to stop generating.
+
+```python
+from huggingface_hub import login, InferenceClient
+
+login("<YOUR_HUGGINGFACEHUB_API_TOKEN>")
+
+model_id = "meta-llama/Llama-3.3-70B-Instruct"
+
+client = InferenceClient(model=model_id)
+
+def custom_model(messages, stop_sequences=["Task"]) -> str:
+    response = client.chat_completion(messages, stop=stop_sequences, max_tokens=1000)
+    answer = response.choices[0].message.content
+    return answer
+```
+
+Additionally, `custom_model` can also take a `grammar` argument. In the case where you specify a `grammar` upon agent initialization, this argument will be passed to the calls to model, with the `grammar` that you defined upon initialization, to allow [constrained generation](https://huggingface.co/docs/text-generation-inference/conceptual/guidance) in order to force properly-formatted agent outputs.
 
 ### TransformersModel
 

examples/e2b_example.py

@@ -23,7 +23,6 @@ class GetCatImageTool(Tool):
 
         return Image.open(BytesIO(response.content))
 
-LAUNCH_GRADIO = False
 
 get_cat_image = GetCatImageTool()
 
@@ -34,11 +33,11 @@ agent = CodeAgent(
     use_e2b_executor=True
 )
 
-if LAUNCH_GRADIO:
-    from smolagents import GradioUI
-
-    GradioUI(agent).launch()
-else:
-    agent.run(
+agent.run(
     "Return me an image of a cat. Directly use the image provided in your state.", additional_args={"cat_image":get_cat_image()}
-    ) # Asking to directly return the image from state tests that additional_args are properly sent to server.
+) # Asking to directly return the image from state tests that additional_args are properly sent to server.
+
+# Try the agent in a Gradio UI
+from smolagents import GradioUI
+
+GradioUI(agent).launch()

src/smolagents/default_tools.py

@@ -153,15 +153,21 @@ class DuckDuckGoSearchTool(Tool):
     }
     output_type = "any"
 
-    def forward(self, query: str) -> list[dict[str, str]]:
+    def __init__(self):
+        super().__init__(self)
         try:
             from duckduckgo_search import DDGS
         except ImportError:
             raise ImportError(
                 "You must install package `duckduckgo_search` to run this tool: for instance run `pip install duckduckgo-search`."
             )
-        results = DDGS().text(query, max_results=7)
-        return results
+        self.ddgs = DDGS()
+
+
+    def forward(self, query: str) -> str:
+        results = self.ddgs.text(query, max_results=10)
+        postprocessed_results = [f"[{result['title']}]({result['href']})\n{result['body']}" for result in results]
+        return "## Search Results\n\n" + "\n\n".join(postprocessed_results)
 
 
 class GoogleSearchTool(Tool):
@@ -246,7 +252,7 @@ class GoogleSearchTool(Tool):
                 )
                 web_snippets.append(redacted_version)
 
-        return "## Web Results\n" + "\n\n".join(web_snippets)
+        return "## Search Results\n" + "\n\n".join(web_snippets)
 
 
 class VisitWebpageTool(Tool):