Checked fact 123412 Oct 2026Agents and apps
Anthropic's engineering post of 26 November 2025 calls the Claude Agent SDK "a powerful, general-purpose agent harness adept at coding".
The exact words it rests on
Published Nov 26, 2025 ... The Claude Agent SDK is a powerful, general-purpose agent harness adept at coding, as well as other tasks that require the model to use tools to gather context, plan, and execute.
What the source said when we opened it, on 12 Oct 2026.
The source
Effective harnesses for long-running agents
Checked
Checked by the notis newsroom on , against the source above.
In the story
How an agent harness runs a model and enforces limits 12 Oct 2026
Cite this fact
Anyone may quote this address. It does not change; if we correct the story, this page says so.