Minimal MCP server with a skill

One greet tool and one bundled skills/greet-user/SKILL.md, served over stdio. Uses the MCP TypeScript SDK v2 and the Skills extension (SEP-2640).

Requires Node.js 22 or later:

npm install
node server.js

The server waits for MCP messages on stdin. Add it to your MCP client's server configuration, replacing the absolute path:

{
  "mcpServers": {
    "skills-example": {
      "command": "node",
      "args": ["/absolute/path/to/mcp-skills/server.js"]
    }
  }
}

The server declares capabilities.extensions["io.modelcontextprotocol/skills"]:

• skills/list discovers the skill, frontmatter, file size, and SHA-256 digest.

• skills/get takes { "uri": "skill://greet-user/SKILL.md" } and returns that skill's metadata.

• resources/read takes the same URI and returns the actual SKILL.md.

• tools/call with { "name": "greet", "arguments": { "name": "Jerric" } } returns Hello, Jerric!.

Automatic skill loading requires a client that supports the Skills extension. Other clients can access the Markdown as an ordinary MCP resource.

Run npm pack to create a distributable package containing both the server and its skill. Skill contents are loaded at startup; restart after editing them.