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 14 Oct 2026
One change · claude-code

Subagents in the SDK changedagent-sdk/subagents

Nearest release: v2.1.299, published an hour before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 14 Oct 2026 01:27 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 14 Oct 2026 01:37 UTC.

Upstream edited
Recorded here
Lines+2added
Lines−2removed
From line 151 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits24to this page, all time

The whole hunk

from line 151, old and new numbered
/
lines
from line 151
151151| `initialPrompt` | `string` | No | Auto-submitted as the first user turn when this agent runs as the main thread agent. Ignored when the agent is invoked as a subagent |
152152| `maxTurns` | `number` | No | Maximum number of agentic turns before the agent stops. When the agent reaches the limit, Claude Code returns its output marked as partial, and you can [resume the agent](#resume-subagents) to continue. The partial marking requires Claude Code v2.1.246 or later |
153153| `background` | `boolean` | No | Run this agent as a non-blocking background task when invoked |
154| `omitClaudeMd` | `boolean` | No | Run this agent without the user, project, and local CLAUDE.md files when it runs as a subagent; managed policy files still load. Ignored when the agent runs as the main thread agent. Requires TypeScript Agent SDK v0.3.271 or later. The Python SDK's [`AgentDefinition`](/docs/en/agent-sdk/python#agentdefinition) doesn't have this field |
154| `omitClaudeMd` | `boolean` | No | Leave the user, project, and local CLAUDE.md files out of this agent's initial context; managed policy files still load. Ignored when the agent runs as the main thread agent. Requires TypeScript Agent SDK v0.3.271 or later. The Python SDK's [`AgentDefinition`](/docs/en/agent-sdk/python#agentdefinition) doesn't have this field |
155155| `effort` | `'low' \| 'medium' \| 'high' \| 'xhigh' \| 'max' \| number` | No | Reasoning effort level for this agent |
156156| `permissionMode` | `PermissionMode` | No | Permission mode for tool execution within this agent. The [subagent inheritance rules](/docs/en/agent-sdk/permissions#available-modes) decide when it applies |
157157 
from line 182
182182| The subagent receives | The subagent doesn't receive |
183183| :- | :- |
184184| Its own system prompt (`AgentDefinition.prompt`) and the Agent tool's prompt | The parent's conversation history or tool results |
185| Project CLAUDE.md (loaded via [`settingSources`](/docs/en/agent-sdk/claude-code-features#control-filesystem-settings-with-settingsources)), unless the agent sets [`omitClaudeMd`](#agentdefinition-configuration) | Preloaded skill content, unless listed in `AgentDefinition.skills` |
185| Project CLAUDE.md (loaded via [`settingSources`](/docs/en/agent-sdk/claude-code-features#control-filesystem-settings-with-settingsources)). An agent that sets [`omitClaudeMd`](#agentdefinition-configuration) starts without it | Preloaded skill content, unless listed in `AgentDefinition.skills` |
186186| Tool definitions (inherited from parent or the subset in `tools`, [filtered for background runs](/docs/en/sub-agents#available-tools)) | The parent's system prompt |
187187 
188188<Note>
Feedback