Tool Use

Estimate the token tax a single tool round-trip adds compared with an inline answer

Roles in a chat training example: pick the three that are standard.

A 40-team org already has OpenAPI specs and three LLM providers. Defend layering MCP on top instead of picking one integration approach.

Your colleague says MCP and function calling do the same thing. Where are they wrong?

Flashcard: what is the ReAct pattern for agents, in one sentence?

How does function calling enable the observe-plan-act agent loop?

Flashcard: what is an AI agent, in one sentence?

Flashcard: what is a tool in an LLM agent?

Flashcard: what does it mean when an LLM 'makes a tool call'?

Flashcard: what is the ReAct prompting pattern?

Why does an agent loop with 5 tool calls have ~6× the latency of a single completion and how do you mitigate?

Which mitigation has the largest impact on agent-loop latency when tool calls are independent?

Order the four phases of a single iteration of a ReAct (Reason + Act) loop in the correct sequence.

Compare MCP and vendor function calling: what layer does each occupy and when would you use both?

Which statement correctly describes the relationship between MCP and vendor function calling?

Put the MCP tool discovery and invocation steps in the correct order

Spot the error in how this MCP server reports a tool failure

Complete the correct MCP error response shape for a tool logic failure

Which statements correctly describe the MCP primitive types?

When should a production MCP client NOT retry a failed tools/call?

Explain how MCP differs from RAG and when to choose each approach

How does MCP differ from RAG, and when would you choose one over the other?

Who is responsible for resolving tool name collisions in a multi-server MCP setup?

What integration problem does MCP solve?

What does trajectory evaluation add beyond task success rate for LLM agent evaluation?