MCP Calculator Demo

A sample MCP server that provides basic arithmetic tools like addition, subtraction, multiplication, and division. It serves as a demonstration for implementing the Model Context Protocol and connecting custom tools to clients like Claude Desktop.

→ FisherSkyi/mcp-demo · listed on glama

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// key findings

✅

No credential exfiltration, no sensitive file access, no obfuscation

Static analysis found nothing flowing your secrets to unexpected places.

🔐

You'll be asked for 1 credential: ANTHROPIC_API_KEY

These are read from process.env at runtime. Make sure you trust where they’ll be sent.

// required environment variables

This server reads these from process.env. You'll be asked to provide them before it can run.

🔐 secretANTHROPIC_API_KEY— Need to set in .env to run the client. The credit from Anthropic is NOT free.

// full audit trail

The full breakdown of what we checked, the deductions that landed, the network hosts, the dependency advisories, and concrete fix guidance is available to verified publishers.

// improvement guidance — verified publishers only

We have 5 concrete improvements we can share with the publisher of this MCP. Each comes with specific guidance to raise the trust score.

// embed badge in your README

[![M8ven Score](https://m8ven.ai/badge/mcp/fisherskyi-mcp-demo-1ps48s)](https://m8ven.ai/mcp/fisherskyi-mcp-demo-1ps48s)

commit: 2a95dd2cfceddeb72ca6d4b6c9e825c7e8430880

code hash: 5cbb8b5234ac5c760e6eb17984c3a49a7606c94419fd9c0fb60172773cacd8ca

verified: 6/12/2026, 11:19:05 AM

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