What is a common pattern for wrapping a tool for use by an Agent?

• A. A generic wrapper that routes calls without validation.
• B. Create a wrapper that standardizes inputs/outputs, handles errors, and exposes a tool contract for discovery.
• C. A wrapper that copies inputs to a local cache without error handling.
• D. A wrapper that encrypts all communications and hides tool contract.

Answer: (B)

Wrapping a tool for use by an Agent means creating a stable, interoperable interface that the agent can rely on across different tools. The best pattern standardizes inputs and outputs so the agent knows exactly how to format requests and parse responses, handles errors so failures become clear and manageable, and exposes a tool contract that describes what the tool can do, what inputs it needs, and what outputs it returns. This combination makes tools discoverable and orchestratable, letting the agent mix and match capabilities without getting bogged down in tool-specific quirks. Without validation, a wrapper that merely routes calls can introduce unpredictable behavior. Copying inputs to a local cache without proper error handling can lead to stale results and silent failures. Encrypting all communications and hiding the tool contract, while seemingly secure, blocks discovery and interoperability, making it hard for the agent to understand and use the tool effectively.