# MCP Calculator Server

> MCP Calculator Server — barneybarney143-mcp-poc. Use this tool when you need to perform addition operations on numbers, solving mathematical problems with ease. The MCP Calculator Server provides a simple add_numbers tool that takes in numerical inputs and returns the sum as output. Ideal for use cases requiring basic arithmetic calculations, this server can be set up with VSCode extensions like Roo Code or Cline for seamless integration.

Canonical page: https://skillsregistry.net/skills/barneybarney143-mcp-poc  
JSON: https://api.skillsregistry.net/v1/skills/barneybarney143-mcp-poc

## Description

A simple MCP server that provides an add_numbers tool for addition operations, with setup instructions for VSCode extensions like Roo Code or Cline.

## Trust

- **Trust score (0–1):** 0.70
- **Verification tier:** verified
- **Last scanned:** 2026-08-29

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** other
- **Updated:** 2026-08-29

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/iuv89ir9oh)
- **Repository:** <https://github.com/barneybarney143/mcp_poc>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "barneybarney143-mcp-poc"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/barneybarney143-mcp-poc` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/barneybarney143-mcp-poc/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt