MCP Calculator

@akhidasTech

Repository

Basic information

About MCP Calculator

A Go implementation of MCP server with calculator and greeting functionality

#mcpcalculator#mcp-server #calculator

MCP Calculator config

No standard config provided

This server doesn't expose a parseable MCP config block in its README. See the repository for install instructions.

Repository

MCP Calculator tools

Tool list not available yet

This listing does not currently have a tool list to display. This does not mean the server has no tools; check its documentation for supported capabilities.

We auto-extract tools from the README. The maintainer can list them under a ## Tools heading to populate this section.

Overview

What is MCP Calculator?

MCP Calculator is a Go implementation of a Model Context Protocol (MCP) server that provides calculator (addition) and greeting functionality. It follows the official MCP specification and uses JSON‑RPC 2.0 for communication.

How to use MCP Calculator?

Clone the repository, run go mod download, then start the server with go run main.go (listens on port 8080). Send JSON‑RPC 2.0 requests via HTTP POST to http://localhost:8080 using tools like add (params a, b) or greeting (params name).

Key features of MCP Calculator

Full JSON‑RPC 2.0 implementation
MCP protocol support with capability negotiation
Tool registration and execution (add, greeting)
Resource handling according to MCP spec
Standard error handling with proper error codes
Security guidelines: user consent, data privacy, tool safety

Use cases of MCP Calculator

Perform basic arithmetic (addition) via an MCP‑compliant server
Generate personalized greetings through a resource endpoint
Test or prototype MCP protocol interactions in Go
Demonstrate JSON‑RPC 2.0 tool and resource patterns

Frequently asked questions

What runtime does MCP Calculator require?

Go 1.21 or higher.

How do I install and start the server?

Clone the repository, run `go mod download`, then execute `go run main.go`. The server starts on port 8080.

What tools are available?

Two tools: `add` (takes parameters `a` and `b`, returns their sum) and `greeting` (takes parameter `name`, returns a greeting).

How are requests and responses formatted?

All communication uses JSON‑RPC 2.0. Requests include `jsonrpc`, `id`, `method`, and `params`. Responses contain `jsonrpc`, `id`, and `result` (or `error` with code, message, and optional data).

What security measures are implemented?

The server follows MCP security guidelines: tools require explicit invocation, no data is shared without requests, tool execution is controlled and validated, and proper error reporting is used.

Comments

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