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Tianyi Cui
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# Conflicts: # .agents/notes/archived/architecture/2026-06-18-shared-persistence-write-coordinator.i18n.yaml # .agents/notes/implemented/architecture/2026-06-14-session-persistence.i18n.yaml # .agents/notes/implemented/architecture/2026-06-14-session-persistence.md # .agents/notes/implemented/architecture/2026-06-14-session-persistence.zh.md # .agents/notes/implemented/architecture/2026-07-24-project-session-directories.i18n.yaml # .agents/notes/implemented/architecture/2026-07-24-project-session-directories.md # .agents/notes/implemented/architecture/2026-07-24-project-session-directories.zh.md # .agents/notes/implemented/architecture/2026-08-05-session-preparation.i18n.yaml # .agents/notes/implemented/architecture/2026-08-05-session-preparation.md # .agents/notes/implemented/architecture/2026-08-05-session-preparation.zh.md # .agents/notes/implemented/architecture/2026-08-10-message-feedback-sidecar.i18n.yaml # .agents/notes/implemented/architecture/2026-08-10-message-feedback-sidecar.md # .agents/notes/implemented/architecture/2026-08-10-message-feedback-sidecar.zh.md # .agents/notes/implemented/architecture/2026-08-27-handle-based-session-persistence.i18n.yaml # .agents/notes/implemented/bug-fix/2026-07-28-load-pre-identity-session-messages.md # .agents/notes/implemented/bug-fix/2026-07-28-load-pre-identity-session-messages.zh.md # .agents/notes/implemented/bug-fix/2026-08-04-load-pre-react-loop-sessions.md # .agents/notes/implemented/bug-fix/2026-08-04-load-pre-react-loop-sessions.zh.md # .agents/notes/implemented/bug-fix/2026-09-01-host-goal-pause-aborts-turn.i18n.yaml # .agents/notes/implemented/feature/2026-08-10-web-session-log-export.i18n.yaml # .agents/notes/implemented/feature/2026-08-10-web-session-log-export.md # .agents/notes/implemented/feature/2026-08-10-web-session-log-export.zh.md # apps/cli/tests/profiles/headless/tests/session-format-guard.expected.e2e.ts # apps/web/tests/cold-blank-session.e2e.ts # apps/web/tests/message-actions.e2e.ts # apps/web/tests/scaffold.ts # apps/web/tests/workspace-management.e2e.ts # docs/config-catalog.i18n.yaml # docs/config-catalog.md # docs/config-catalog.zh.md # docs/event-producer-consumer.i18n.yaml # docs/event-producer-consumer.md # docs/event-producer-consumer.zh.md # docs/persistence-catalog.i18n.yaml # docs/persistence-catalog.md # docs/subsystems/feedback.i18n.yaml # docs/subsystems/feedback.md # docs/subsystems/feedback.zh.md # docs/subsystems/persistence.i18n.yaml # docs/subsystems/persistence.md # docs/subsystems/persistence.zh.md # packages/acp/acp/src/index.ts # packages/acp/acp/tests/bridge.spec.ts # packages/api/session-controller/src/list.ts # packages/api/session-controller/tests/agent.host.spec.ts # packages/api/session-controller/tests/session-cold.host.spec.ts # packages/api/session-controller/tests/session-projections.host.spec.ts # packages/api/session-controller/tests/session-search.host.spec.ts # packages/api/session-controller/tests/test-remote.ts # packages/api/session-controller/tests/transport.host.spec.ts # packages/core/agent-loop/src/index.ts # packages/core/agent-loop/tests/config-session-id.spec.ts # packages/core/agent-loop/tests/resume.spec.ts # packages/extensions/tool-cordis/src/api-catalog.ts # packages/feedback/message-feedback/src/index.ts # packages/feedback/message-feedback/tests/helpers.ts # packages/feedback/message-feedback/tests/message-feedback.spec.ts # packages/session-query/session-log-export/src/archive.ts # packages/session-query/session-log-export/tests/archive.host.spec.ts # packages/session-query/session-log-export/tests/route.host.spec.ts # packages/session-query/session-query-sqlite/README.i18n.yaml # packages/session-query/session-query-sqlite/README.md # packages/session-query/session-query-sqlite/README.zh.md # packages/session-query/session-query-sqlite/src/index.ts # packages/session-query/session-query-sqlite/tests/sqlite.spec.ts # packages/session-query/session-query/README.i18n.yaml # packages/session-query/session-query/README.md # packages/session-query/session-query/README.zh.md # 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packages/session/session-persistence/tests/coordinator-contract.ts # packages/session/session-persistence/tests/persistence.spec.ts # packages/session/session-telemetry/package.json # packages/shell/tool-bash/tests/tools.spec.ts # packages/subagent/subagent/src/continuation.ts # packages/subagent/subagent/tests/list-children.spec.ts # packages/workspace/workspace/src/index.ts # packages/workspace/workspace/tests/workspace.spec.ts # scripts/gen-cordis-catalog.ts
description, kind
| description | kind |
|---|---|
| The subagent package group: the delegation seam, its in-process and out-of-process backends, and the model-facing delegation tools. | package-group |
subagent/ — subagent capability family
English | 中文
Summary
The subagent group is the delegation family: it lets an agent hand a task to a child agent, wait for or continue the child's work, and keep every child discoverable. One contract (ctx.subagents) serves any number of named providers, so a single composition can mix in-process children (fresh, or forked from the parent's completed history) with out-of-process children — an ACP agent, a real Codex or Claude Code installation, or a complete Harness runtime over the SDK. The model-facing tools expose delegation, adjacent-Agent messaging, and listing to agents, and a parent can always see which children exist and whether they are live or stored. This page maps the group; each package README owns its package contract.
Table of Contents
Packages
| Package | Role | ctx key |
|---|---|---|
subagent/ |
Defines the delegation service: provider registry, one-shot runs, continuable children, and discovery | ctx.subagents |
subagent-in-process-driver/ |
Provides the shared in-process run driver | — |
subagent-spawn-in-process/ |
Runs a fresh in-process child | registers on ctx.subagents |
subagent-fork-in-process/ |
Runs an in-process child seeded from the parent's completed history | registers on ctx.subagents |
subagent-acp/ |
Runs an out-of-process child over the Agent Client Protocol | registers on ctx.subagents |
subagent-codex/ |
Runs a real Codex child through the official app-server protocol | registers on ctx.subagents |
subagent-claude-code/ |
Runs a real Claude Code child through the official Agent SDK | registers on ctx.subagents |
subagent-dsh-sdk/ |
Runs an out-of-process Harness child through the TypeScript SDK | registers on ctx.subagents |
tool-subagent/ |
Exposes delegation to the model | registers on ctx.tools |
tool-subagent-control/ |
Exposes adjacent-Agent messaging, interrupt, and listing to the model | registers on ctx.tools |
Related documentation
- Subagent subsystem — the service contract, provider contract, and terminal result semantics.
- Subagent capability seam — the design record for the delegation capability family.
- Continuable background subagents — durable children that accept follow-up turns.
- Merged subagent control service — the follow-up, interrupt, and listing surface.
Dev Note
None.