elysia-mcp

Overview

The elysia-mcp plugin provides comprehensive support for implementing MCP servers within ElysiaJS applications. It features HTTP transport with both streaming and JSON response modes, type-safe implementation using TypeScript and Zod validation, and session management via headers. The plugin supports all MCP capabilities including tools, resources, prompts, and logging, with customizable logger support for popular libraries like pino and winston. It offers modular architecture allowing specialized endpoints for different MCP capabilities.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• echo

  Echoes back the provided text

  Try:Echo hello worldTry:Repeat this message back to me
• add

  Add two numbers

  Try:Add 5 and 7Try:Calculate 10 plus 3
• multiply

  Multiply two numbers

  Try:Multiply 4 by 6Try:What is 8 times 3?
• power

  Calculate base to the power of exponent

  Try:Calculate 2 to the power of 8Try:What is 3 raised to the 4th power?
• uppercase

  Convert text to uppercase

  Try:Convert hello to uppercaseTry:Make this text all caps: welcome
• word_count

  Count words in text

  Try:Count words in this sentenceTry:How many words are in the paragraph?
• reverse

  Reverse text characters

  Try:Reverse the string 'hello'Try:Put these characters in reverse order: 12345
• replace

  Replace text with global matching

  Try:Replace all 'a' with 'b' in 'banana'Try:Change 'cat' to 'dog' in the sentence

Comparable tools

Installation

# Install with bun
bun add elysia-mcp

# Install with npm
npm install elysia-mcp

{
  "mcpServers": {
    "elysia-mcp": {
      "command": "node",
      "args": ["path/to/your/server.js"]
    }
  }
}

FAQ

What transport protocols does elysia-mcp support?

It primarily supports HTTP transport with both SSE streaming and JSON response modes, allowing flexibility in client-server communication.

Can I use custom loggers with elysia-mcp?

Yes, the plugin supports any logger that implements the ILogger interface, including popular libraries like pino, winston, and bunyan.

Compare elysia-mcp with