Calculator MCP

Calculate MCP

A Model Context Protocol (MCP) server that provides browser automation capabilities using basic calculator feature. This server enables LLMs to interact with calculator. (I actually made it for a test program)

Use Cases

The test code for to connect MCP feature.
The toy projects

Example config

{ "mcpServers": { "calculate": { "command": "npx", "args": [ "-y", "@wrtnlabs/calculator-mcp@latest" ] } } }

Installation in VS Code

Alternatively, you can install the Playwright MCP server using the VS Code CLI:

# For VS Code code --add-mcp '{"name":"calculator","command":"npx","args":["-y", "@wrtnlabs/calculator-mcp@latest"]}'

# For VS Code Insiders code-insiders --add-mcp '{"name":"calculator","command":"npx","args":["-y", "@wrtnlabs/calculator-mcp@latest"]}'

After installation, the Calculator MCP server will be available for use with your GitHub Copilot agent in VS Code.

CLI Options

The Calculator MCP server supports the following command-line options:

--port <port>: Port to listen on for SSE transport

Running headed browser on Linux w/o DISPLAY

When running headed browser on system w/o display or from worker processes of the IDEs, run the MCP server from environment with the DISPLAY and pass the --port flag to enable SSE transport.

npx @wrtnlabs/calculator-mcp@latest --port 8931

And then in MCP client config, set the url to the SSE endpoint:

{ "mcpServers": { "calculator": { "url": "http://localhost:8931/sse" } } }

Programmatic usage with custom transports

import { createServer } from "@wrtnlabs/calculator-mcp"; // ... other import statement const client = new Client({ name: "test client", version: "0.1.0", }); const server = createServer({ name: "calculator", version: "1.0.0" }); const [clientTransport, serverTransport] = InMemoryTransport.createLinkedPair(); await Promise.all([ client.connect(clientTransport), server.connect(serverTransport), ]);