GoKawiilCursor launches Agent SDK for building custom code-based agents
Cursor has released the Agent SDK, the same framework it uses internally to build managed agents like Bugbot, Security Reviewer, and Rollouts. Developers can define agents in code, starting from a template or using Cursor's documentation, then deploy them to Cursor's infrastructure with a single command. An internal Cursor team used the SDK to build 'kb-reviewer' in about a day, an agent that checks every pull request against the team's knowledge base of past lessons.
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By letting teams codify their own review policies and workflows rather than adopting a one-size-fits-all product, the SDK could lower the barrier to building bespoke automation tied to a team's existing tools like GitHub or GitLab. The kb-reviewer example suggests such agents might help preserve institutional knowledge as codebases evolve, though how well this generalizes beyond Cursor's own use case remains to be seen.
- Cursor's Agent SDK lets developers define and deploy custom agents in code, deployable via a single command.
- The same framework powers Cursor's existing managed agents: Bugbot, Security Reviewer, and Rollouts.
- An internal example, kb-reviewer, was built in about a day to check pull requests against a team's recorded lessons.
Source: cursor.com — Rustam Lalkaka, 2026-10-28
Published there as: “The Agent SDK”
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