promote-tier

Flip a tool, resource, or prompt's support tier between stable and experimental atomically across both source-of-truth sites ([McpToolMetadata] annotation and ServerSurfaceCatalog partial entry). Use when: /publish-preflight Step 8 surfaces a recommendation: "promote" row in the promotion scorecard, a release-cut needs to flip a tier on a single tool/resource/prompt, or a tier flip needs to be reverted.…