Subdomain 1.2: Identify and select appropriate AI solution types.
1.A software vendor's AI-powered assistant can call a calendar API to check availability and call a payment API to process a deposit before confirming a booking. Which core AI agent capability is being demonstrated?
- A.Tool use, because the assistant invokes external APIs to complete parts of the task
- B.Fine-tuning, because the assistant has been retrained on booking transcripts
- C.Prompt engineering, because the assistant was given a carefully worded instruction
- D.Retrieval augmented generation, because the assistant looks up answers in a knowledge base
Show answer & explanation
Correct answer: A — Tool use, because the assistant invokes external APIs to complete parts of the task
- A. Calling a calendar API and a payment API to take real actions in external systems is the definition of tool use, one of the core capabilities that separates an agent from a plain text-generating model.
- B. Fine-tuning refers to adapting a model's internal parameters with additional training data, not to calling external APIs during a live conversation.
- C. Prompt engineering is about how an instruction is worded to guide a model's response, not about invoking external systems to take action.
- D. Retrieval augmented generation refers to pulling supporting text from a knowledge base to ground a response, which is different from calling transactional APIs like calendars or payments.