hubspot-app-builder
by Cashmyrr
This skill should be used when the user asks to "build a HubSpot app", "create a HubSpot app", "add a card to HubSpot", "create an app card", "build a UI extension", "set up HubSpot webhooks", "configure HubSpot app", "add a settings page to HubSpot app", "build a HubSpot home page", "fetch data in HubSpot extension", "list an app on the HubSpot marketplace", "submit a HubSpot app listing", "marketplace listing requirements", or mentions building on the HubSpot developer platform 2025.2. Provides comprehensive guidance for building full HubSpot apps with best practices, CLI commands, file structure, and App Marketplace listing requirements.