Deconstructing the Agent Loop: A 3-Tier Architecture
littlebobbyt · reddit · 2026-07-15
Based on extensive development experience, the author argues that the commonly discussed concept of the "agent loop" is too simplistic, proposing a more refined three-tier architecture:
- Reasoning Loop: The underlying generation and thought process of the model.
- Tool Loop: The execution layer where the model interacts with external tools and calls APIs.
- Human Loop: The interaction layer where humans intervene to approve, guide, or correct the agent's behavior.
The author provides pseudocode examples using Ruby but emphasizes that this architectural pattern is universal across different programming languages.
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