Custom stores, custom tools, and auto-review for the Cursor SDK

Cursor released a batch of new functionality across its TypeScript and Python SDKs, including custom tools, auto-review, JSONL and custom stores, nested subagents, and various reliability, performance, and platform improvements.

From the source
We've shipped a batch of new functionality across the TypeScript and Python SDKs. You can now choose how agent and run metadata is persisted, expose your own functions to the agent as tools, route local tool calls through auto-review, and nest subagents to any depth.
cursor.com

Visit source ↗cursor.com

Announced: 04 Jun 2026 00:00 UTC
Detected: 03 Aug 2026 21:12 UTC (+60d after)

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