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Sweep 28 Aug 2026 ยท 00:00Z Build v2.1.250 478 read Stable v2.1.236 Latest v2.1.250 Next v2.1.250 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

One change

How the agent loop works

agent-sdk/agent-loop

first seen The page's own history The capture it came from

Nearest release: v2.1.233, published 10 hours before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

agent-sdk/agent-loop Changed · +2 / -0 lines

from line 145
 | **Discovery**       | `ToolSearch`                                                    | Dynamically find and load tools on-demand instead of preloading all of them |
 | **Orchestration**   | `Agent`, `Skill`, `AskUserQuestion`, `TaskCreate`, `TaskUpdate` | Spawn subagents, invoke skills, ask the user, track tasks                   |
 
+On the [models that don't get the task-tracking tools](/docs/en/agent-sdk/todo-tracking#model-availability), Claude Code provides `TaskCreate` and `TaskUpdate` only when you opt in.
+
 Beyond built-in tools, you can:
 
 * **Connect external services** with [MCP servers](/docs/en/agent-sdk/mcp) (databases, browsers, APIs)