Add Agent tutorial (#388)

* Add Agent tutorial

* Update index.toml

* Update README.md

* Update index.toml

* Update index.toml

* Update 43_Building_a_Tool_Calling_Agent.ipynb

* Update README.md

* add trafilatura and ComponentTool name

* fix streaming, remove exit_conditions example

* explain SERP, add ChatGenerator links

* update the agent tutorial

---------

Co-authored-by: bilgeyucel <[email protected]>

Author: julian-risch

README.md

@@ -31,3 +31,4 @@ To contribute to the tutorials, please check out our [Contributing Guidelines](.
 | [Building a Chat Application with Function Calling](./tutorials/40_Building_Chat_Application_with_Function_Calling.ipynb)                                         | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/deepset-ai/haystack-tutorials/blob/main/tutorials/40_Building_Chat_Application_with_Function_Calling.ipynb)|
 | [Query Classification with TransformersTextRouter](./tutorials/41_Query_Classification_with_TransformersTextRouter_and_TransformersZeroShotTextRouter.ipynb)      | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/deepset-ai/haystack-tutorials/blob/main/tutorials/41_Query_Classification_with_TransformersTextRouter_and_TransformersZeroShotTextRouter.ipynb)                                                                                                                                          |
 | [Retrieving a Context Window Around a Sentence](./tutorials/42_Sentence_Window_Retriever.ipynb)                                                                   | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/deepset-ai/haystack-tutorials/blob/main/tutorials/42_Sentence_Window_Retriever.ipynb) |                                                                                                                                                                                                                          |
+| [Build a Tool-Calling Agent](./tutorials/43_Building_a_Tool_Calling_Agent.ipynb)                                                                   | [![Open In Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/deepset-ai/haystack-tutorials/blob/main/tutorials/43_Building_a_Tool_Calling_Agent.ipynb) |                                                                                                                                                                                                                          |

index.toml

@@ -488,7 +488,6 @@ completion_time = "10 min"
 created_at = 2024-10-16
 haystack_2 = true
 dependencies = ["nltk"]
-featured = true
 
 [[tutorial]]
 title = "Evaluation"
@@ -500,4 +499,17 @@ haystack_2 = true
 guide = true
 colab = false
 download = false
-created_at = 2024-07-17
+created_at = 2024-07-17
+
+[[tutorial]]
+title = "Build a Tool-Calling Agent"
+description = "Learn how to create an Agent that can use a web search tool to answer questions"
+level = "beginner"
+weight = 7
+notebook = "43_Building_a_Tool_Calling_Agent.ipynb"
+aliases = []
+completion_time = "10 min"
+created_at = 2025-04-03
+haystack_2 = true
+dependencies = ["docstring-parser", "trafilatura"]
+featured = true