Cursor Open-Sources Plugin Spec Revealing Multi-Agent Orchestration Patterns

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Cursor has open-sourced its plugin specification, which has gained over 7,400 stars and 648 forks on GitHub. Each plugin is structured as a standalone directory containing a manifest file that defines tool boundaries, dependencies, and orchestration hints such as parallel execution and verification requirements. The repository includes example plugins like orchestrate, which coordinates parallel cloud agents across planner, worker, and verifier roles, and thermos, which runs parallel subagents to audit security, correctness, and code quality. Plugins communicate through a shared state object, allowing the orchestrator to aggregate results and decide on actions such as blocking a merge or surfacing warnings. The specification is notable for exposing production-grade agent coordination patterns that most frameworks typically abstract away from developers.

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