HAR Journal https://harproject.cloud/blog Architecture, field notes, and practical patterns for reliable coding-agent workflows. en Why coding agents need a harness, not another prompt. https://harproject.cloud/blog/why-coding-agents-need-a-harness https://harproject.cloud/blog/why-coding-agents-need-a-harness Sat, 18 Jul 2026 10:00:00 GMT Coding models can edit files. Reliable software work requires a surrounding system that can isolate, launch, verify, and explain what happened.