What is a key step when extending HF Agents with new tools?

• A. Rename an existing tool and reuse its wrapper.
• B. Skip documentation to speed up development.
• C. Implement a new Tool wrapper, document it, register it in the registry, and update prompts and plans.
• D. Remove the tool from the registry to avoid confusion.

Answer: (C)

When adding a new tool to HF Agents, integration must be done in a clean, discoverable way. The best approach is to implement a new Tool wrapper that clearly defines how to call the tool, what inputs it requires, and what output it produces, then document it so others understand how to use it. Registering this wrapper in the registry makes the tool visible to the agent during discovery and planning, ensuring it can be chosen when appropriate. Finally, updating the prompts and planning logic ensures the agent incorporates the new tool into its reasoning and execution flow. These steps together help maintain a consistent interface, enable discoverability, and keep the agent’s behavior aligned with the tool’s capabilities. Skipping documentation, reusing an existing wrapper for a different tool, or removing the tool from the registry would lead to confusion, misalignment, and lost capabilities.