Cursor: the Agent SDK is now generally available
The Agent SDK is now generally available, letting developers define agents as code projects, test them with evals, and deploy them to Cursor or their own infrastructure.
What the article says
On October 20, 2026, Cursor announced general availability of its Agent SDK, which lets developers define an agent as a folder of code, test it with evals, and deploy it to Cursor's infrastructure or their own. An init command creates a project and a dev command runs the agent locally with a playground; four starter templates are offered, including a security reviewer and a PR autofixer.
An agent consists of an instructions file, typed tools, skills loaded on demand, MCP connections and channels. It can be triggered by GitHub, GitLab and Bitbucket events, Slack, webhooks or a cron schedule, with each conversation keeping its own session. Evals check which tools ran and the structure of the reply, and a replay command turns a real pull request into test events. Agent configuration thus moves into version-controlled code.
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