Subagents
Separate agents the main one can hand work to, each with its own prompt, tools, and context window. Delegation is how big tasks stay coherent, and every tool wires it a little differently.
Widest support first. Hover any name for what it means.
| concept | support | Claude Code | Codex | Cursor | Fabro not shipped |
|---|---|---|---|---|---|
| description | 3/4 | — | |||
| name | 3/4 | — | |||
| model | 2/4 | — | — | ||
| background | 1/4 | — | — | — | |
| color | 1/4 | — | — | — | |
| developer_instructions | 1/4 | — | — | — | |
| disallowedTools | 1/4 | — | — | — | |
| effort | 1/4 | — | — | — | |
| hooks | 1/4 | — | — | — | |
| initialPrompt | 1/4 | — | — | — | |
| is_background | 1/4 | — | — | — | |
| isolation | 1/4 | — | — | — | |
| maxTurns | 1/4 | — | — | — | |
| mcpServers | 1/4 | — | — | — | |
| memory | 1/4 | — | — | — | |
| nickname_candidates | 1/4 | — | — | — | |
| permissionMode | 1/4 | — | — | — | |
| readonly | 1/4 | — | — | — | |
| skills | 1/4 | — | — | — | |
| tools | 1/4 | — | — | — |