This Pull Request aims to significantly improve the clarity and understanding of Agents SDK exceptions within the documentation. I have updated the definitions for all core exceptions (found in agents.exceptions) to be more precise, comprehensive, and easier for beginners to grasp.

Why these changes are important:

Previously, some exception definitions might have been concise but lacked the detailed explanation necessary for new users to fully understand when and why a particular exception is raised. The goal here is to make the documentation more beginner-friendly by:

• Providing Clearer Context: Each definition now offers more context on the circumstances that lead to the exception.
• Actionable Understanding: Users will better understand the root cause of the error, helping them to debug and implement agents more effectively.
• Improved Onboarding: A clear understanding of error handling from the outset will greatly enhance the onboarding experience for developers new to the Agents SDK.

Specific improvements for each exception:

• AgentsException: Clarified its role as the base class for all SDK exceptions.
• MaxTurnsExceeded: Explicitly mentions all relevant Runner methods (run, run_sync, run_streamed) where max_turns can be exceeded.
• ModelBehaviorError: Detailed the common scenarios such as "Malformed JSON" and "Non-existent Tools", which are crucial for understanding unexpected model output.
• UserError: Emphasized that this exception is for errors made by the developer using the SDK, due to incorrect implementation or configuration.
• InputGuardrailTripwireTriggered / OutputGuardrailTripwireTriggered: Provided clearer explanations of what guardrails are and their purpose (checking inputs before processing, and checking outputs before delivery, respectively).

These updated definitions will be a valuable asset to the SDK's documentation, making it much easier for anyone, regardless of their prior experience, to understand and handle errors effectively.

I believe this update will directly contribute to a smoother learning curve and a better overall experience for all Agents SDK users.