Hands-on tutorial: Harness Engineering for AI coding agents that fix bugs safely
Pavan_Belagatti · x · 2026-09-11
Pavan Belagatti published a hands-on tutorial on Harness Engineering for AI coding agents, demoing an agent that finds and fixes a real bug under controlled conditions.
- Context injection: uses Port to give the agent proper engineering context.
- Guardrails: the harness constrains what the agent is allowed to change.
- Verification: generated code is validated through automated tests.
Takeaway: as agents take on more software engineering work, the bottleneck isn't raw model capability but engineering the harness — context, boundaries, and automated verification.
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