Develop, Build & Integrate

Developer Platform & Tooling You’re working with HubSpot developer tooling: the CLI, environment and account configuration, IDE integrations, automated CI/CD with GitHub Actions, Custom Coded Actions in workflows, or serverless functions. Share code snippets, error messages, and context to help others help you. APIs & Integrations You’re building powerful integrations and applications using HubSpot APIs. Share code snippets, error messages, and context to help others help you. App Development You’re building a HubSpot app (private, custom, or for the Marketplace) and have questions about app architecture, OAuth, scopes, App Cards, App Homes, or App Settings. Share context, code snippets, and error messages to help others help you. For Marketplace listing or go-to-market questions, visit Marketplace Apps. HubSpot-built Apps You have a question about an app built and maintained by HubSpot. Whether you’re trying to set it up, troubleshoot an issue, or get more out of it, you’ll find help here from the community and HubSpot staff. MCP & Agents You’re building with or exploring HubSpot’s MCP server (local or remote), Agent Builder, or AI connectors. Share use cases, ask setup and configuration questions, and discuss agentic workflows with the community. UI Extensions You’re building UI Extensions: custom cards, CRM UI customization, extension frameworks, and related APIs. Questions here cover the full range of UIE surfaces including App Cards, App Homes, and App Settings. Marketplace Apps You’re looking for an app in the HubSpot Marketplace (or feedback from the community about one) or you’re building an app and exploring the Marketplace as a distribution path, either way, you’re in the right place. Review this topic for app promotion guidelines. CMS Development You’re building themes, templates, modules, and more on HubSpot’s CMS or Content Hub. Share code snippets, error messages, and context to help others help you. Developer Announcements Stay current on developer-focused product releases, breaking changes, deprecations, and platform updates. Watch this topic to keep your builds aligned with what’s shipping.