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Agent SDK reference - TypeScript changedagent-sdk/typescript

Nearest release: v2.1.296, published 23 hours 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 10 Oct 2026 16:37 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 17:07 UTC.

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First seen 14 Aug 2026 this site's first read of the page
Recorded edits113to this page, all time

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467467| `agents` | `Record<string, [`AgentDefinition`](#agentdefinition)>` | `undefined` | Programmatically define subagents |
468468| `agentProgressSummaries` | `boolean` | `false` | When `true`, generate one-line progress summaries for subagents and forward them on [`task_progress`](#sdktaskprogressmessage) events via the `summary` field. Applies to foreground and background subagents |
469469| `allowDangerouslySkipPermissions` | `boolean` | `false` | Enable bypassing permissions. Required when using `permissionMode: 'bypassPermissions'`, at startup or later through `setPermissionMode()`. See [plan mode](/docs/en/agent-sdk/permissions#plan-mode-plan) for how it interacts with `permissionMode: 'plan'` |
470| `allowedTools` | `string[]` | `[]` | Tools to auto-approve without prompting. This does not restrict Claude to only these tools. If you name one of the [task-tracking tools](/docs/en/agent-sdk/todo-tracking#model-availability) here, Claude Code also opts the session in. Other unlisted tools fall through to `permissionMode` and `canUseTool`. Use `disallowedTools` to block tools. See [Permissions](/docs/en/agent-sdk/permissions#allow-and-deny-rules) |
470| `allowedTools` | `string[]` | `[]` | Tools to auto-approve without prompting, apart from reads from [network paths](/docs/en/permissions#network-paths). This does not restrict Claude to only these tools. If you name one of the [task-tracking tools](/docs/en/agent-sdk/todo-tracking#model-availability) here, Claude Code also opts the session in. Other unlisted tools fall through to `permissionMode` and `canUseTool`. Use `disallowedTools` to block tools. See [Permissions](/docs/en/agent-sdk/permissions#allow-and-deny-rules) |
471471| `betas` | [`SdkBeta`](#sdkbeta)`[]` | `[]` | Enable beta features |
472472| `canUseTool` | [`CanUseTool`](#canusetool) | `undefined` | Custom permission function, invoked only when the [permission flow](/docs/en/agent-sdk/permissions#how-permissions-are-evaluated) falls through to a prompt. Not invoked for calls auto-approved by `allowedTools`, allow rules, or `permissionMode`. An allow rule doesn't pre-approve the [actions no mode auto-approves](/docs/en/permission-modes#actions-no-mode-auto-approves). See [`CanUseTool`](#canusetool) for details |
473473| `continue` | `boolean` | `false` | Continue the most recent conversation |
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53295329 
53305330To render a retry indicator from `subagent_retry`:
53315331 
5332* Track the indicator by `parent_tool_use_id`, which is unique per subagent. `tool_use_id` is shared by p
5332* Track the indicator by `pare
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