# Demo (Everything)

> Use this tool when you need to test and validate MCP client implementations against a comprehensive range of protocol features and functionalities. It solves problems related to compatibility, debugging, and demonstration of MCP protocol capabilities, accepting prompts and inputs and producing outputs in various formats. The tool is particularly useful in development and testing contexts, providing a standardized environment to exercise MCP protocol features.

Canonical page: https://skillsregistry.net/skills/modelcontextprotocol-demo-everything  
JSON: https://api.skillsregistry.net/v1/skills/modelcontextprotocol-demo-everything

## Description

This MCP server, developed by Anthropic, serves as a comprehensive demo suite for MCP client implementations. It exercises the full range of MCP protocol features including prompts, tools, resources, and sampling. Built in TypeScript, the server implements various tools like echo, math operations, and LLM sampling, as well as 100 test resources in both plaintext and binary formats. By providing a standardized testing ground, this server enables MCP client developers to validate their implementations against a wide array of protocol functionalities. It is particularly useful for ensuring compatibility, debugging edge cases, and demonstrating the capabilities of the MCP protocol in a controlled environment.

## Trust

- **Trust score (0–1):** 0.50
- **Verification tier:** unverified

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-04-29

## Source

- **Source listing:** [PulseMCP](https://www.pulsemcp.com/servers/modelcontextprotocol-demo-everything)
- **Repository:** <https://github.com/modelcontextprotocol/servers/tree/HEAD/src/everything>

## 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": "modelcontextprotocol-demo-everything"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/modelcontextprotocol-demo-everything` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/modelcontextprotocol-demo-everything/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