@manybases/mcp

The Manybases MCP server: your AI agent creates and runs a backend — database, auth for your app's users, file storage, server-side functions and a site — without you opening a browser. 38 tools, over stdio.

Install

You need Node 22 or later and a Manybases account key (ak_…). Create the key in your dashboard, under Account → Generate my account key (dash.manybases.com/account) — it is shown once.

Then add the server to your MCP client's configuration (Claude Desktop, Cursor, Claude Code…):

{
  "mcpServers": {
    "manybases": {
      "command": "npx",
      "args": ["-y", "@manybases/mcp"],
      "env": { "MANYBASES_API_KEY": "<your ak_ key>" }
    }
  }
}

The server refuses to start without MANYBASES_API_KEY, and says so.

Prefer no key at all? Use the remote connector

The same tools are served at https://mcp.manybases.com: add it as a custom connector (or a remote HTTP server) and approve the consent window that opens on your dashboard — nothing to copy. See Connect an agent.

Related MCP server: Yarah MCP Server

One agent at a time

An account has at most one live agent key. Installing the remote connector revokes the key this server uses: the server keeps running, but every tool answers 401. To come back, revoke the connector's key on Account and generate a new one.

Variables

What an agent cannot do alone

A few gestures always ask for a signed-in human: setting the app URL, deleting a project or a user, issuing a reset link, creating a secret key (sk_), and destructive SQL. Without MANYBASES_ACCOUNT_SESSION those tools answer 428 or 403 — a correct refusal, not an outage. See The human boundary.

If it does not start

• npx not found, or the wrong Node. Desktop apps do not read your shell's PATH. Put the absolute path of npx in command (which npx prints it).

• Windows. If your client cannot start npx directly, use "command": "cmd", "args": ["/c", "npx", "-y", "@manybases/mcp"].

• Check it by hand. Send it an initialize, then a tools/list: it answers with the tools.

Links

• Documentation: docs.manybases.com — the tools, one page each: MCP tools

• Releases are published by CI from github.com/Manybases/mcp; those carry a provenance attestation that npm audit signatures verifies.

License

MIT