61 lines
2.6 KiB
Markdown
61 lines
2.6 KiB
Markdown
# @deepseek-ai/dsh-tool-pty
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Six model-facing tools over `ctx.pty`: `terminal_open`, `terminal_send`, `terminal_read`, `terminal_signal`, `terminal_close`, and `terminal_list`. Every operation requires the exact initiating `Agent`, so a model cannot address another agent's terminal even if it learns the id.
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`terminal_send(run_in_background: true)` reuses `ctx.tasks`; task preflight occurs before any terminal write, completion is collected with `task_output`, and `task_kill` requests `Ctrl-C`. Foreground sends use terminal ACP cards; lifecycle, history, signal, and list calls use generic cards.
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## Model Experience
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### System prompt
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#### What the model sees
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The plugin contributes this fixed guidance section:
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##### Terminal guidance
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```markdown
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Use a terminal session only when work needs persistent terminal state or interactive stdin; prefer bash/read/write/edit for bounded one-shot operations. Track every terminal session id and close sessions that no longer matter. An inferred_idle or timeout result does not prove the foreground command exited.
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```
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#### Token effect
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Small fixed input cost on every request while the plugin is active.
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#### KV Cache effect
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Prefix-stable while the registration scope and guidance text are unchanged.
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### Tool schemas
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#### What the model sees
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The six generated schemas are listed in the [`dsh-tool-pty` catalog section](../../../docs/tool-catalog.md#deepseek-aidsh-tool-pty). Their fixed schema tokens are present whenever this plugin is active; agent-scoped tool filtering may hide them.
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#### Token effect
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Fixed schema cost on requests where the tools are visible.
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#### KV Cache effect
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Prefix-stable while tool visibility and definitions are unchanged.
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### Tool results and task context
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#### What the model sees
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Spawn returns the id and bounded MOTD. Send/read return bounded terminal text plus readiness/history markers. Background mode returns a generic task id. Results remain in session history until compaction; incremental task reads do not repeat consumed output. Programmatic callers receive typed session snapshots, bounded send/read DTOs, signal and close outcomes, or `{ kind: "background", taskId }`; Native rendering preserves the text above.
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#### Token effect
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Data-dependent and bounded by the backend; each returned result remains in history until compaction.
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#### KV Cache effect
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Append-only; new results follow the reusable request prefix.
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## Known Limitations and Deferred Work
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- No named key sequence, TUI, BEL, resize, auto-start, or cross-agent sharing schema is exposed.
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- Background mode requires both `@deepseek-ai/dsh-tasks` and its model-facing control surface.
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