A Generative AI Engineer is using LangGraph to define multiple tools in a single agentic application. They want to enable the main orchestrator LLM to decide on its own which tools are most…

Question

Options

• A
  1. Define or import the tools 2. Add tools and LLM to the agent 3. Create the ReAct agent
• B
  1. Define or import the tools 2. Define the agent 3. Initialize the agent with ReAct, the LLM, and
• C
  1. Define the tools 2. Load each tool into a separate agent 3. Instruct the LLM to use ReAct to call
• D
  1. Define the tools inside the agents 2. Load the agents into the LLM 3. Instruct the LLM to use

• A
  2% (1)
• B
  91% (48)
• C
  2% (1)
• D
  6% (3)

Explanation

The correct LangGraph ReAct pattern follows three steps: (1) define or import the tools the agent can invoke, (2) define the agent's graph structure and state, (3) initialize the agent using create_react_agent() passing in the LLM and tools together. Option B correctly captures this sequence. Option A incorrectly adds tools and the LLM to the agent before the ReAct agent is created, inverting the initialization order. Option C incorrectly loads each tool into a separate agent - tools are bound to a single agent, not split across many. Option D incorrectly embeds tool definitions inside agents and passes agents into the LLM, which inverts the entire architecture.

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