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Tianyi Cui
3ca9c7d489
Rename the tool-presentation transport from code-mode to ptc everywhere that is not written into session logs: the mode config value becomes 'ptc', the preset directory/id becomes ptc, the demo becomes demo:ptc, the dispatch waterfall becomes tools/ptc-dispatch-log (types PtcDispatch*), the prompt rule becomes tools:ptc-only, source/test files become ptc.ts etc., and prose says PTC mode / PTC 模式. The session-persistent vocabulary (durable events tool/code-dispatch*, logged plugin name tools-code-mode, sub-call id segment :code:) intentionally stays and moves in the stacked persistence PR, which is blocked until the SESSION_FORMAT_VERSION v0→v1 migration lands with it. run_code, its code parameter, CodeSdkLanguage, CodeRunFailedError, the dsh-code-runtime family, third-party codex names, and frozen archived notes keep their names.
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, follow-up, 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 follow-up, interrupt, and listing to the model | registers on ctx.tools |
tool-subagent-report/ |
Provides the child-to-parent report channel | registers in child scopes |
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.