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# Conflicts: # docs/architecture.md # docs/capability-seams.md # docs/config-catalog.md # docs/cordis-catalog/services.md # docs/module-graph.md # docs/tool-catalog.md # examples/acp-agent/tests/acp.snapshot.ts # examples/headless-agent/tests/headless.snapshot.ts # examples/package.json # packages/README.md # packages/cordis/tool-cordis/src/api-catalog.ts # packages/core/tools/tests/gen-tool-catalog.spec.ts # pnpm-lock.yaml # pnpm-workspace.yaml # scripts/gen-tool-catalog.ts # scripts/type-equiv.manifest.json # website/.vitepress/config/api-sidebar.json
pty/ — persistent PTY capability family
PTY stands for Pseudo-Terminal（伪终端）. This capability provides persistent, owner-scoped terminal sessions for workflows that require state across tool calls or interactive stdin. PTY complements the one-shot bash and filesystem tools; it does not replace their stronger per-operation contracts.
| Package | Role | ctx key |
|---|---|---|
pty (@deepseek-ai/dsh-pty) |
Backend registry, branded ids, exact-Agent ownership, session operations, and awaited cleanup | ctx.pty |
pty-local (@deepseek-ai/dsh-pty-local) |
Local node-pty backend, readiness detection, bounded terminal state, sandboxing, and process-session supervision |
registers on ctx.pty |
tool-pty (@deepseek-ai/dsh-tool-pty) |
Six model-facing tools and generic task integration for background sends | registers on ctx.tools |
The design and deferred boundaries live in the persistent PTY Agent Note.