# MCP Demo Server

> Use this tool when you need to demonstrate and test various MCP server functionalities, such as calculator, file operations, and weather tools, or access resources like server configuration and system information. It solves problems related to testing and showcasing MCP server capabilities, providing a sandbox environment for development and debugging. The tool accepts user input through a web interface and outputs results, making it ideal for developers and testers working with MCP servers.

Canonical page: https://skillsregistry.net/skills/joohnnie-mcp-agent  
JSON: https://api.skillsregistry.net/v1/skills/joohnnie-mcp-agent

## Description

A demonstration MCP server showcasing tools (calculator, file operations, weather, timestamp), resources (server config, system info, documentation), and reusable prompt templates for code review, documentation, and debugging.

## Trust

- **Trust score (0–1):** 0.60
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-07-05

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/xfcuhoxbly)
- **Repository:** <https://github.com/joohnnie/mcp-agent>

## 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": "joohnnie-mcp-agent"
    }
  }
}
```

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