Follow Discord
Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Code CLI 10 Oct 2026
One change · claude-code

Create custom subagents changedsub-agents

Upstream edited this page at 10 Oct 2026 17:52 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 10 Oct 2026 18:07 UTC.

Upstream edited
Recorded here
Lines+1added
Lines−1removed
From line 1,066 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits90to this page, all time

The whole hunk

from line 1066, old and new numbered
/
lines
from line 1066
10661066* **System prompt**: the agent's own prompt plus environment details that Claude Code appends, not the Claude Code system prompt. Custom subagents define theirs in the [markdown body](#write-subagent-files) or `prompt` field. Built-in agents have predefined prompts.
10671067* **Task message**: the delegation prompt Claude writes when it hands off the work.
10681068* **CLAUDE.md files**: every level of the [CLAUDE.md hierarchy](/docs/en/memory#how-claude-md-files-load) the main conversation loads, including `~/.claude/CLAUDE.md`, project rules, `CLAUDE.local.md`, managed policy files, and any [`AGENTS.md` files](/docs/en/memory#agents-md) loaded as project instructions. The built-in Explore and Plan agents skip this. A subagent whose definition sets [`omitClaudeMd`](#supported-frontmatter-fields) loads only the managed policy files, or none at all when the definition comes from [managed settings](#choose-the-subagent-scope).
1069* **Git status**: a snapshot Claude Code reads from your repository when the subagent starts. Absent outside a Git repository or whenever the snapshot is turned off; see [`includeGitInstructions`](/docs/en/settings-reference#includegitinstructions). Explore and Plan skip it regardless.
1069* **Git status**: a snapshot Claude Code reads from your repository when the subagent starts. For a subagent in [its own worktree](/docs/en/worktrees#isolate-subagents-with-worktrees) of that repository, the snapshot shows the worktree's branch, status, and recent commits. Absent outside a Git repository or whenever the snapshot is turned off; see [`includeGitInstructions`](/docs/en/settings-reference#includegitinstructions). Explore and Plan skip it regardless.
10701070* **Preloaded skills**: full content of any skill named in the agent's [`skills` field](#preload-skills-into-subagents). Built-in agents don't preload skills.
10711071* **Sibling roster**: a [system reminder](/docs/en/glossary#system-reminder) listing `main` and every other named agent in the session, each a valid `to` value for [`SendMessage`](#resume-subagents). Requires Claude Code v2.1.206 or later. The roster appears only when the subagent's tools include `SendMessage` and at least one other agent has a name, whether Claude named it when spawning it or it runs as an [agent team](/docs/en/agent-teams) teammate. It is a snapshot taken when the subagent starts, so agents named later don't appear.
10721072 
Feedback