Cloud Agents and Cursor Harness Improvements
By Steven Van ·
We're continuing to improve cloud agents and the Cursor harness so always-on agents can operate as a system, building and shipping software on their own…
Cursor's cloud agents can now subscribe to an event source, a PR thread, a Slack conversation, or a schedule, and wake up when something happens instead of waiting for a new prompt each loop. The changelog covers several other harness changes alongside this.
- Subscriptions: cloud agents automatically subscribe to the PRs they create and keep driving them to completion, fixing CI and addressing bot comments. In Slack, you can ask "@cursor check back in an hour and keep going until that feedback is in." Subscriptions currently work for cloud agents only.
- Custom modes: any skill can now be pinned in the chat as an "always on" Custom Mode. From the `/` menu, pick a skill and press Option+Enter (Mac) or Alt+Enter (Windows), or choose "Use as Mode."
- Subagents on their own machines: subagents can run on their own virtual machines, each with an isolated copy of the project and clean context in its own cloud environment, so they can test the parent agent's changes in a fresh environment or swarm independent fixes without colliding.
- /goal: gives an agent a long-lived objective to work toward until it's fully complete, for example "/goal fix all flaky tests and make CI green." It can be paired with a custom mode for a playbook, or with /loop for recurring check-ins.
- Steering improvements: messages sent while an agent is working now wait for its next tool call instead of interrupting it mid-action. Typing a follow-up and hitting Send, or pressing Enter twice, queues it that way.
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