Agentic SDLC Patterns

Public Posts

• The Day Two Agents Drafted the Same Six Posts

  Two agent sessions independently drafted the same wave of six blog posts at once. Nobody planned that. The fix was not to prevent it, it was to make it survivable.

• A BLOCKED Banner as an API Between Two Labs

  Three real runs failed on the same trivial bug, and every new session wanted to try again. The fix wasn't a retry. It was a sentence in the backlog: do not pull on this thread again from this side, and here is exactly what reopens it.

• Two Sessions Claimed RUN-0023

  Two agent sessions closed out in parallel, both read the same last id, both wrote RUN-0023. Then it happened again with RUN-0026. Sequential ids in a multi-writer log are a collision generator by design, and the ledger sitting next door proves the alternative.

• One Blind Spot, Found Twice

  In two weeks across four labs, a second AI reviewer caught a fabricated example, rescoped a whole system, confirmed the same bug twice independently, and flagged a security check testing the wrong path. One thesis, five exhibits: independence is what you're paying for.

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