Subagent lifecycle
Hooks for when subagents are spawned and when they complete — observe delegation, aggregate results, enforce policies
Lifecycle Hooks Hooks & Lifecycle
Supported
Partial
No
Unknown
Cline Current · May 2026 
Codex CLI Current · Apr 2026 
Copilot Current · Apr 2026 
Windsurf Current · Apr 2026 2.1.10 - 2.1.143
3.82.0 - 3.83.0
0.88.0 - 0.128.0
2025.10 - 2026.05
2.4 - 3.2
1.13.3 - 2.1.29
2.0.43 - 2.1.10
3.82.0
0.53.0 - 0.88.0
2025.10
2.0
1.12.31 - 1.13.3
1.0.41 - 2.0.30
3.82.0
0.2.0 - 0.53.0
2025.07 - 2025.10
1.0 - 2.0
1.2.1 - 1.12.31
0.2.31 - 1.0.38
1.5.0 - 3.82.0
0.2.0
2025.06 - 2025.07
0.45 - 1.0
1.0.2 - 1.2.1
Supported by 2 of 6 agents.
HoverTap any cell for version details.
Agent event mapping
Sub-capabilities
- Subagent start: observe or veto when a parent agent delegates to a child
- Subagent stop: receive results, enforce quality gates on delegated work
- Claude Code: also has TeammateIdle for multi-agent workflows
- Cursor: subagentStart is blocking (can veto); subagentStop includes summary, duration, modified_files