dsh-opinionated-subagent

The stock subagent tool in DeepSeek Harness accepts only a description and a prompt. A child silently inherits the parent model and reasoning effort, and there is no parameter to override either. If a delegated task should run on a faster or cheaper model, the only lever is switching the parent, which is rarely practical. Steering is even worse: the native send_message routes through the followup channel, so a correction aimed at work in flight waits for the entire current turn to finish before landing. In a measured session a steer accepted at plus 7.4 seconds was not consumed until plus 54.9 seconds, a 47.5-second stall on a simple counting task.

dsh-opinionated-subagent replaces the subagent frontend. The model argument becomes required, and its enum is the allowlist you maintain under Settings, Plugins. Reasoning effort is pinned per route and validated against the exact model before any provider call; an unadvertised effort id is refused outright rather than clamped to a nearby value. For steering, the plugin calls Agent steer for a running direct child so a correction joins the turn in progress at the next step boundary instead of queueing behind the full turn. Every subagent call renders a one-line route summary in the transcript, so you never need to read the session log to confirm which model the child actually ran on. All configuration is re-read at every tool call, so an edit applies to the next delegation with no restart.

It is built for teams running mixed-model workloads where the main agent needs deep reasoning but delegated subtasks should run on lighter or domain-specific models to control cost and latency. It is also for anyone with a hard policy against silent inheritance: an empty allowlist unregisters the tool entirely rather than falling back to the parent model, and the prompt still states the refusal reason so the model can explain it to the user. The plugin is opt-in by design; a fresh install behaves identically to the stock tool until you remove the seeded inherit/current entry and add your own routes.