Files
deepseek-harness/packages/pty/tool-pty/README.md
T
NI0317 a7bfade7eb refactor(pty): rename model-facing tools to terminal_* and harden teardown
Rename the six model-facing tools pty_* -> terminal_* and align every
description, guidance section, ACP card title, and rendered result to
terminal terminology. Package and service internals keep their technical
PTY names (PtyService, "unknown PTY session", node-pty).

Harden the local backend teardown:
- a failed close is retryable: drop the memoized rejection so a later
  terminal_close re-runs against the live process table
- service disposal clears the backend, reservation, and owner-cleanup
  registries even when a close fails
- stop readiness polling before teardown so an in-flight send settles as
  session_exit instead of a mis-inferred wait reason
- bound the sanitizer's pending buffer against unterminated escape runs

Update the tool catalog, package READMEs, the bilingual Agent Note, and the
acp/headless pty-tools snapshots to match.
2026-07-21 19:29:56 +08:00

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2.4 KiB
Markdown

# @deepseek-ai/dsh-tool-pty
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.
`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.
## Model Experience
### System prompt
#### What the model sees
The plugin contributes this fixed guidance section:
##### Terminal guidance
```markdown
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.
```
#### Token effect
Small fixed input cost on every request while the plugin is active.
#### KV Cache effect
Prefix-stable while the registration scope and guidance text are unchanged.
### Tool schemas
#### What the model sees
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.
#### Token effect
Fixed schema cost on requests where the tools are visible.
#### KV Cache effect
Prefix-stable while tool visibility and definitions are unchanged.
### Tool results and task context
#### What the model sees
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.
#### Token effect
Data-dependent and bounded by the backend; each returned result remains in history until compaction.
#### KV Cache effect
Append-only; new results follow the reusable request prefix.
## Known Limitations and Deferred Work
- No named key sequence, TUI, BEL, resize, auto-start, or cross-agent sharing schema is exposed.
- Background mode requires both `@deepseek-ai/dsh-tasks` and its model-facing control surface.