No-BS guide to agent harness engineering: context, guardrails, and feedback
Pavan_Belagatti · x · 2026-09-24
Pavan Belagatti published a practical guide to Agent Harness Engineering. Core thesis: AI coding agents are great at generating code, but code generation is a small part of real software engineering — a useful agent must also understand the service, its owning team, dependencies, engineering rules, permission boundaries, and how to verify its own work.
Key points:
- Harness = the operating environment around a model: context, tools, guardrails, feedback
- A context layer gives agents service ownership and coding standards
- Two full implementations: a controlled payment bug fix and a scorecard-based deployment gate
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