Base44 and MCP: the Base44 MCP server, App MCP and custom connections

Base44 supports MCP (Model Context Protocol) in three directions. The Base44 MCP server lets an assistant like Claude or ChatGPT build and manage your Base44 apps. App MCP gives a published app its own MCP server so assistants can use it. Custom MCP connections let Base44’s own AI chat call other services’ MCP servers while you build. There’s also a Docs MCP server for searching Base44’s documentation.

This is part of the Base44 integrations guide.

The Base44 MCP server: build from your assistant#

The Base44 MCP server “exposes your Base44 account to any MCP-compatible AI assistant.” Describe what you want and the assistant creates or updates projects for you. It needs the Builder plan or higher.

Add it to your assistant’s MCP configuration:

{ "mcpServers": { "base44": { "url": "https://app.base44.com/mcp" } } }

Some tools need a restart to pick it up. Base44 “re-checks your workspace membership on every request and every token refresh,” so the connection stops working if your access is removed. Among its tools is one that imports a design from a public URL and starts a project from it.

App MCP: let assistants use your app#

App MCP connects external assistants to one published app, so you or your users can work with it from Claude, ChatGPT or Cursor: view or manage data, message the app’s agents, or run custom tools.

To set it up, open your app’s dashboard, click MCP, then Set up access. You control access at three levels, including tool access, which decides which entities, agents and custom tools assistants can use. If you see Enable custom authentication instead, set up your app’s custom login pages first. Workspace owners can turn MCP off for the whole workspace.

Custom MCP connections: give Base44’s chat more tools#

Custom MCP connections work the other way: Base44’s AI chat connects to an external MCP server while you build, so it can use that service’s tools during setup. For example, connecting a form backend’s MCP server lets the chat create the form and its follow-up workflows and wire the form into your page. LinkyCal is one that works this way; the contact form guide covers it.

The Docs MCP server and skills#

Base44 also publishes a Docs MCP server so assistants can search its documentation, and a set of agent skills (npx skills add base44/skills -g) that teach coding agents how Base44 projects are structured. Both cut down on an agent guessing SDK methods. See using Claude Code, Cursor or Codex with Base44.

Which one you need#

What to do next#

1. If you’re on Builder, add the Base44 MCP server to your assistant and try a small change.
2. For a published app, set up App MCP with read-only access first.
3. Connect the MCP servers of tools you use while building, such as your form backend.