Harness, Scaffold, and the AI Agent Terms Worth Getting Right
The article discusses the evolving vocabulary in the field of AI Agents, highlighting the confusion surrounding terms like 'harness' and 'scaffold'. It aims to clarify these concepts, which are often mixed up or used inconsistently. The glossary provided is intended to help practitioners and newcomers better understand these terms without enforcing a single definition.
- ▪The vocabulary in AI Agents is evolving rapidly, leading to confusion among practitioners.
- ▪Terms like 'harness' and 'scaffold' are often used interchangeably, despite having distinct meanings.
- ▪The article provides a glossary to clarify these terms and improve discussions in the field.
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Back to Articles Harness, Scaffold, and the AI Agent Terms Worth Getting Right Published May 25, 2026 Update on GitHub Upvote 33 +27 Sergio Paniego sergiopaniego Follow Aritra Roy Gosthipaty ariG23498 Follow Table of Contents Model Scaffolding Harness Agent Context Engineering Policy Tool Use Skills Sub-agents Training RL Environment Trainer Rollout Reward Learn More When a field evolves quickly, its vocabulary often evolves faster than its shared understanding. Terms start to blur, get reused in different contexts, or become shorthand for ideas that are never fully explained. We are currently seeing this happen in the field of AI Agents, where concepts are getting mixed together, some are renamed, and others are widely used for a few months before quietly disappearing.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Huggingface.
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