Maker-Checker (Evaluator-Optimizer)

What Problem It Solves

Models produce drafts; you often need a quality gate:

• correctness rubric
• safety requirements
• formatting constraints

Maker-Checker adds an explicit verification step and revision loop.

Core Flow

flowchart TD
  M["Maker draft"] --> C["Checker evaluate (passed, feedback)"]
  C -->|passed| O["Return draft"]
  C -->|fail| R["Revise using feedback"] --> M

Evolution Path

• Comes from: “single draft” generation
• Often combined with: Voting, CoVe, Retrieval

Repo Reference

• Code: src/agent_patterns_lab/patterns/maker_checker.py
• Example: examples/30_maker_checker.py
• Tests: tests/test_maker_checker.py