Topic
The scaffolding around a language model — control loop, tools, context, filesystem, memory, observability — treated as the engineering surface that produces agentic behaviour.
A developer edited a task while an agent was still setting up, and found that permission scopes say nothing about stale instructions. The fix is a revision bound at dispatch and checked before every write.
Reality
Part 6 of dev.to's Harness Engineering series puts the runtime where tool calls execute at the center of agent safety. Its list of things a bounded environment must prevent reads as an infra checklist.
Reality
A dev.to series on harness engineering splits persistence into in-task scratch and cross-session recall, and argues that building them as one system produces neither.
Reality