Agentic AI Notebook
Phase 18

Reviewer Agent

~2 min read

Concept & How It Works

  • Key points are in the visual diagram above.

Why Does It Exist?

Critics focus on correctness; reviewers focus on deliverable quality. Separating the roles prevents one agent from trading accuracy for style.

Real-World Analogy

The reviewer is the copy editor at a newspaper — facts are already verified; they ensure the headline sings and the layout is clean.
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Visual Workflows

What is Reviewer Agent?

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Example

Scenario

Critic-approved support reply → Reviewer shortens to 3 sentences, adds greeting, removes jargon, ensures CSAT-friendly tone.

Solution

In Multi-Agent Systems, apply Reviewer Agent to this scenario: Critic-approved support reply → Reviewer shortens to 3 sentences, adds greeting, removes jargon, ensures CSAT-friendly tone. Identify the inputs, run the technique, validate the output, and note one thing you would monitor in production.

Practice Task

Do this before moving to the next module — reading alone is not enough.

Open the Code Walkthrough below and run it locally. Change one parameter related to Reviewer Agent (e.g. model, temperature, top_k, or tool name), observe the difference in output, and write 2–3 sentences explaining what changed.

Code Walkthrough

Highlighted lines show where Reviewer Agent happens in the code.

Reviewer Agent
1reviewer = Agent(  # key line for Reviewer Agent2    instructions="Polish for customer-facing tone. Keep facts unchanged. Max 150 words.",3)4final = reviewer.run_sync(f"Draft reply: {approved_draft}").output  # key line for Reviewer Agent

Commands to Remember

Commands to Remember

  • pip install langgraph langchain-openai # multi-agent orchestration
  • pip install crewai # role-based multi-agent crews

Common Mistakes

  • Treating Reviewer Agent as a black box without evaluation
  • Ignoring cost and latency in production
  • Skipping error handling for reviewer agent

Cheat Sheet

Quick recap — the most important points from this module.

Cheat Sheet

quick ref
  • Reviewer Agent
  • Copy Edit
  • Brand Voice
  • Deliverable QA