MCP Server

A Model Context Protocol server implementation for the Probo Labs ecosystem.

Installation

Since this is part of a monorepo, you can install dependencies from the root:

cd probo-js
pnpm install

Development

To build the package:

pnpm --filter @probolabs/mcp-server build

To run in development mode:

pnpm --filter @probolabs/mcp-server dev

Usage

The MCP server provides tools that can be used by MCP clients:

run_step

run a single browser interaction step such as navigate to a url, fill a form, click a button, etc.

Input Parameters

• step (string): a single, atomic browser interaction step to be executed. example: goto url, fill username, fill password, click login, select option from dropdown, etc.

highlight_elements

Highlight interactive elements of a given type on the page for debugging purposes.

Input Parameters

• element_type (string): Which type of element to highlight on the page

interact-with-element-number

Highlight interactive elements of a given type on the page. this tool is useful only for debugging purposes and should use only if the user explicitly asks for it by providing the element number

Input Parameters

• interaction_type (string): The type of interaction to perform
• element_number (number): The number of the element to interact with
• value (string): The value to fill in or select from the dropdown. for clicks pass an empty string

Testing

You can test the server using the MCP CLI tool or any other MCP client.