Formio MCP Server

What the code does

We read the source, 21 h ago · rules 3dff92dd89df

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

const CONTAINER_MARKER = '/.dockerenv';

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add formio-mcp -- npx -y @formio/mcp

{
  "mcpServers": {
    "formio-mcp": {
      "args": [
        "-y",
        "@formio/mcp"
      ],
      "command": "npx"
    }
  }
}

[mcp_servers.formio-mcp]
command = "npx"
args = ["-y", "@formio/mcp"]

{
  "mcpServers": {
    "formio-mcp": {
      "args": [
        "-y",
        "@formio/mcp"
      ],
      "command": "npx"
    }
  }
}

{
  "mcpServers": {
    "formio-mcp": {
      "args": [
        "-y",
        "@formio/mcp"
      ],
      "command": "npx"
    }
  }
}

This one needs environment variables set before it will start: FORMIO_PROJECT_URL (Optional, and the WEAKEST of the three project sources: a committed formio.json found by walking up from the working directory wins, then the per-directory mapping project_set writes, then this. It pins nothing — project_set can redirect a directory whose environment names a different project. Useful for a launch with nowhere to record a project, such as CI or a container (e.g. https://examples.form.io on the hosted cloud; self-hosted it is either https://your-project.your-domain.com or https://your-host/project-name, depending on how that deployment routes projects). Leave it unset and the agent asks for a project and records it per directory.), FORMIO_BASE_URL (Optional, and usually unnecessary: the base URL is DERIVED from the project URL — https://api.form.io for a project on a form.io host, the parent path for a project addressed as a sub-directory — and is asked for only when it cannot be derived, which is a path-less project URL on a customer domain. There is no default. Like FORMIO_PROJECT_URL it is the weakest source, behind a committed formio.json and the per-directory mapping.), FORMIO_API_KEY (Form.io project API key. Optional — when omitted the server uses a browser-based portal login flow to obtain a JWT.), FORMIO_LOGIN_FORM (URL of a custom login form used by the browser-based portal login flow. Defaults to the deployment's portal login form.), FORMIO_FORCE_BROWSER (Set to 1 to attempt the browser login even where the server detects it cannot present one (CI, a container, a remote shell with no display). Use it when the login page is reachable from a browser elsewhere.), FORMIO_INSECURE_TLS (Set to 1 to skip TLS certificate verification. For local development against self-signed certificates only — never enable in production.). The author declared them in the registry entry; get the values from the project itself.