**HubSpot Developer MCP Server** is a 📝HubSpot product that runs locally and connects an AI coding agent to HubSpot's developer platform — its documentation, APIs, and project tools — so the agent can write, configure, and deploy custom HubSpot builds from a plain-language description. It is one of four AI tools HubSpot maps to distinct jobs: Breeze Assistant for exploring, this server for building, the Agent CLI for managing records, and a hosted remote HubSpot MCP server for connecting outside AI apps to CRM data over OAuth; it works alongside the HubSpot CLI (hs), which uploads projects to an account. It is for developers and technical builders making UI extensions on records, dashboard pages inside HubSpot, website modules, and apps — including apps that add an MCP server component so 📝Breeze agents can call outside tools.
Key Features
- Docs and API access — Gives the coding agent HubSpot's developer documentation and API references, so it plans each build against the platform's current behavior.
- Project tools — Creates and configures HubSpot projects, then deploys them to the connected account through the HubSpot CLI's project upload command.
- Custom builds — Produces record UI extensions, in-app dashboard pages, website modules, and apps from natural-language descriptions the agent turns into code.
- MCP server components — Lets an app define an MCP server component (2026.09 beta platform) so Breeze agents in a customer's account can use its tools.
Getting Started
- Create a free HubSpot account or open an existing one you can build in.
- Point a coding agent at HubSpot's build-with-AI quickstart guide.
- Let the agent install the HubSpot CLI and Developer MCP server, approving each step.
- Sign in when the browser opens to connect your local environment to HubSpot.
- Describe a build, review the generated code, and deploy it to the account.