MCP Calculator
BasicMCP Calculator is a Go implementation of a Model Context Protocol (MCP) server that provides calculator and greeting functionalities, adhering to the official MCP specification. It supports full JSON-RPC 2.0 implementation and tool registration.
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Overview
MCP Calculator is a Go implementation of a Model Context Protocol (MCP) server that provides calculator and greeting functionalities, adhering to the official MCP specification. It supports full JSON-RPC 2.0 implementation and tool registration.
Installation
1Install the package
npx
Clone the repository, install the necessary Go modules, and run `go run main.go`.2Add to Claude
Add this configuration to your claude_desktop_config.json:
claude_desktop_config.json
{
"mcpServers": {
"mcp-calculator": {
"command": "npx",
"args": [
"-y",
"Clone the repository, install the necessary Go modules, and run `go run main.go`."
]
}
}
}3Verify installation
Restart Claude Desktop, then ask:
"What tools do you have available from MCP Calculator?"
Prerequisites
- Node.js 18 or higher
- npm or npx available
- Claude Desktop or Claude API access
Configuration
No configuration required. This server works out of the box.
Usage Examples
List Resources
"What resources are available in MCP Calculator?"
Claude will query available resources and return a list of what you can access.
Get Details
"Show me details about [specific item] in MCP Calculator"
Claude will fetch and display detailed information about the requested item.
Create New
"Create a new [item] in MCP Calculator with [details]"
Claude will use the appropriate tool to create the resource and confirm success.
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