dsh-btw

While your agent is deep in a multi-step task, you might want to confirm a variable name, sanity-check a logic branch, or simply ask a quick question without breaking its flow. dsh-btw was built for that moment: type /btw in the main input, a floating panel slides in with your question pre-filled, and a streaming answer begins instantly while the primary agent keeps working uninterrupted.

The side agent is strictly read-only. It inherits the full conversation context with no truncation and no size ceiling, yet it cannot invoke any tool and produces a single-turn reply. The panel shows only the question and the answer; chain-of-thought and hallucinated tool-call markers are stripped automatically. Your question is never written to disk. The side session is kept as a one-shot, read-only sub-agent record for later review and cannot be continued. On each subsequent /btw, the last 20 side Q&A pairs are replayed as thread context, so follow-up questions stay coherent.

If you run the DeepSeek Harness (dsh) Web UI and regularly let an agent grind through long tasks, /btw is your no-interrupt side channel. Ask, get an instant streaming answer, close the panel with Esc, and the agent never flinches.