Mcp Agent Kit

mcp-agent-kit

> The easiest way to create MCP servers, AI agents, and chatbots with any LLM

[](https://www.npmjs.com/package/mcp-agent-kit) [](https://opensource.org/licenses/MIT) [](https://www.typescriptlang.org/)

mcp-agent-kit is a TypeScript package that simplifies the creation of:

• 🔌 MCP Servers (Model Context Protocol)
• 🤖 AI Agents with multiple LLM providers
• 🧠 Intelligent Routers for multi-LLM orchestration
• 💬 Chatbots with conversation memory
• 🌐 API Helpers with retry and timeout

Features

• Zero Config: Works out of the box with smart defaults
• Multi-Provider: OpenAI, Anthropic, Gemini, Ollama support
• Type-Safe: Full TypeScript support with autocomplete
• Production Ready: Built-in retry, timeout, and error handling
• Developer Friendly: One-line setup for complex features
• Extensible: Easy to add custom providers and middleware

Installation

npm install mcp-agent-kit

Quick Start

Create an AI Agent (1 line!)

import { createAgent } from "mcp-agent-kit";

const agent = createAgent({ provider: "openai" });
const response = await agent.chat("Hello!");
console.log(response.content);

Create an MCP Server (1 function!)

import { createMCPServer } from "mcp-agent-kit";

const server = createMCPServer({
  name: "my-server",
  tools: [
    {
      name: "get_weather",
      description: "Get weather for a location",
      inputSchema: {
        type: "object",
        properties: {
          location: { type: "string" },
        },
      },
      handler: async ({ location }) => {
        return `Weather in ${location}: Sunny, 72°F`;
      },
    },
  ],
});

await server.start();

Create a Chatbot with Memory

import { createChatbot, createAgent } from "mcp-agent-kit";

const bot = createChatbot({
  agent: createAgent({ provider: "openai" }),
  system: "You are a helpful assistant",
  maxHistory: 10,
});

await bot.chat("Hi, my name is John");
await bot.chat("What is my name?"); // Remembers context!

Documentation

Table of Contents

• [AI Agents](#ai-agents)
• [MCP Servers](#mcp-servers)
• [LLM Router](#llm-router)
• [Chatbots](#chatbots)
• [API Requests](#api-requests)
• [Configuration](#configuration)
• [Examples](#examples)

---

AI Agents

Create intelligent agents that work with multiple LLM providers.

Basic Usage

import { createAgent } from "mcp-agent-kit";

const agent = createAgent({
  provider: "openai",
  model: "gpt-4-turbo-preview",
  temperature: 0.7,
  maxTokens: 2000,
});

const response = await agent.chat("Explain TypeScript");
console.log(response.content);

Supported Providers

| Provider | Models | API Key Required | | ------------- | -------------------- | ---------------- | | OpenAI | GPT-4, GPT-3.5 | ✅ Yes | | Anthropic | Claude 3.5, Claude 3 | ✅ Yes | | Gemini | Gemini 2.0+ | ✅ Yes | | Ollama | Local models | ❌ No |

With Tools (Function Calling)

const agent = createAgent({
  provider: "openai",
  tools: [
    {
      name: "calculate",
      description: "Perform calculations",
      parameters: {
        type: "object",
        properties: {
          operation: { type: "string", enum: ["add", "subtract"] },
          a: { type: "number" },
          b: { type: "number" },
        },
        required: ["operation", "a", "b"],
      },
      handler: async ({ operation, a, b }) => {
        return operation === "add" ? a + b : a - b;
      },
    },
  ],
});

const response = await agent.chat("What is 15 + 27?");

With System Prompt

const agent = createAgent({
  provider: "anthropic",
  system: "You are an expert Python developer. Always provide code examples.",
});

Smart Tool Calling

Smart Tool Calling adds reliability and performance to tool execution with automatic retry, timeout, and caching.

Basic Configuration

const agent = createAgent({
  provider: "openai",
  toolConfig: {
    forceToolUse: true,      // Force model to use tools
    maxRetries: 3,           // Retry up to 3 times on failure
    toolTimeout: 30000,      // 30 second timeout
    onToolNotCalled: "retry", // Action when tool not called
  },
  tools: [...],
});

With Caching

const agent = createAgent({
  provider: "openai",
  toolConfig: {
    cacheResults: {
      enabled: true,
      ttl: 300000,    // Cache for 5 minutes
      maxSize: 100,   // Store up to 100 results
    },
  },
  tools: [...],
});

Direct Tool Execution

// Execute a tool directly with retry and caching
const result = await agent.executeTool("get_weather", {
  location: "San Francisco, CA",
});

Configuration Options

| Option | Type | Default | Description | | ---------------------- | ------- | ------- | -------------------------------------------------------------- | | forceToolUse | boolean | false | Force the model to use tools when available | | maxRetries | number | 3 | Maximum retry attempts on tool failure | | onToolNotCalled | string | "retry" | Action when tool not called: "retry", "error", "warn", "allow" | | toolTimeout | number | 30000 | Timeout for tool execution (ms) | | cacheResults.enabled | boolean | true | Enable result caching | | cacheResults.ttl | number | 300000 | Cache time-to-live (ms) | | cacheResults.maxSize | number | 100 | Maximum cached results | | debug | boolean | false | Enable debug logging |

Complete Example

const agent = createAgent({
  provider: "openai",
  model: "gpt-4-turbo-preview",
  toolConfig: {
    forceToolUse: true,
    maxRetries: 3,
    onToolNotCalled: "retry",
    toolTimeout: 30000,
    cacheResults: {
      enabled: true,
      ttl: 300000,
      maxSize: 100,
    },
    debug: true,
  },
  tools: [
    {
      name: "get_weather",
      description: "Get current weather for a location",
      parameters: {
        type: "object",
        properties: {
          location: { type: "string" },
        },
        required: ["location"],
      },
      handler: async ({ location }) => {
        // Your weather API logic
        return { location, temp: 72, condition: "Sunny" };
      },
    },
  ],
});

// Use in chat - tools are automatically called
const response = await agent.chat("What's the weather in NYC?");

// Or execute directly with retry and caching
const result = await agent.executeTool("get_weather", {
  location: "New York, NY",
});

---

MCP Servers

Create Model Context Protocol servers to expose tools and resources.

Basic MCP Server

import { createMCPServer } from "mcp-agent-kit";

const server = createMCPServer({
  name: "my-mcp-server",
  port: 7777,
  logLevel: "info",
});

await server.start(); // Starts on stdio by default

With Tools

const server = createMCPServer({
  name: "weather-server",
  tools: [
    {
      name: "get_weather",
      description: "Get current weather",
      inputSchema: {
        type: "object",
        properties: {
          location: { type: "string" },
          units: { type: "string", enum: ["celsius", "fahrenheit"] },
        },
        required: ["location"],
      },
      handler: async ({ location, units = "celsius" }) => {
        // Your weather API logic here
        return { location, temp: 22, units, condition: "Sunny" };
      },
    },
  ],
});

With Resources

const server = createMCPServer({
  name: "data-server",
  resources: [
    {
      uri: "config://app-settings",
      name: "Application Settings",
      description: "Current app configuration",
      mimeType: "application/json",
      handler: async () => {
        return JSON.stringify({ version: "1.0.0", env: "production" });
      },
    },
  ],
});

WebSocket Transport

const server = createMCPServer({
  name: "ws-server",
  port: 8080,
});

await server.start("websocket"); // Use WebSocket instead of stdio

---

LLM Router

Route requests to different LLMs based on intelligent rules.

Basic Router

import { createLLMRouter } from "mcp-agent-kit";

const router = createLLMRouter({
  rules: [
    {
      when: (input) => input.length  input.includes("code"),
      use: { provider: "anthropic", model: "claude-3-5-sonnet-20241022" },
    },
    {
      default: true,
      use: { provider: "openai", model: "gpt-4-turbo-preview" },
    },
  ],
});

const response = await router.route("Write a function to sort an array");

With Fallback and Retry

const router = createLLMRouter({
  rules: [...],
  fallback: {
    provider: 'openai',
    model: 'gpt-4-turbo-preview'
  },
  retryAttempts: 3,
  logLevel: 'debug'
});

Router Statistics

const stats = router.getStats();
console.log(stats);
// { totalRules: 3, totalAgents: 2, hasFallback: true }

const agents = router.listAgents();
console.log(agents);
// ['openai:gpt-4-turbo-preview', 'anthropic:claude-3-5-sonnet-20241022']

---

Chatbots

Create conversational AI with automatic memory management.

Basic Chatbot

import { createChatbot, createAgent } from "mcp-agent-kit";

const bot = createChatbot({
  agent: createAgent({ provider: "openai" }),
  system: "You are a helpful assistant",
  maxHistory: 10,
});

await bot.chat("Hi, I am learning TypeScript");
await bot.chat("Can you help me with interfaces?");
await bot.chat("Thanks!");

With Router

const bot = createChatbot({
  router: createLLMRouter({ rules: [...] }),
  maxHistory: 20
});

Memory Management

// Get conversation history
const history = bot.getHistory();

// Get statistics
const stats = bot.getStats();
console.log(stats);
// {
//   messageCount: 6,
//   userMessages: 3,
//   assistantMessages: 3,
//   oldestMessage: Date,
//   newestMessage: Date
// }

// Reset conversation
bot.reset();

// Update system prompt
bot.setSystemPrompt("You are now a Python expert");

---

API Requests

Simplified HTTP requests with automatic retry and timeout.

Basic Request

import { api } from "mcp-agent-kit";

const response = await api.get("https://api.example.com/data");
console.log(response.data);

POST Request

const response = await api.post(
  "https://api.example.com/users",
  { name: "John", email: "john@example.com" },
  {
    name: "create-user",
    headers: { "Content-Type": "application/json" },
  }
);

With Retry and Timeout

const response = await api.request({
  name: "important-request",
  url: "https://api.example.com/data",
  method: "GET",
  timeout: 10000, // 10 seconds
  retries: 5, // 5 attempts
  query: { page: 1, limit: 10 },
});

All HTTP Methods

await api.get(url, config);
await api.post(url, body, config);
await api.put(url, body, config);
await api.patch(url, body, config);
await api.delete(url, config);

---

Configuration

Environment Variables

All configuration is optional. Set these environment variables or pass them in code:

# MCP Server
MCP_SERVER_NAME=my-server
MCP_PORT=7777

# Logging
LOG_LEVEL=info  # debug | info | warn | error

# LLM API Keys
OPENAI_API_KEY=sk-...
ANTHROPIC_API_KEY=sk-ant-...
GEMINI_API_KEY=...
OLLAMA_HOST=http://localhost:11434

Using .env File

# .env
OPENAI_API_KEY=sk-...
ANTHROPIC_API_KEY=sk-ant-...
LOG_LEVEL=debug

The package automatically loads .env files using dotenv.

---

Examples

Check out the /examples directory for complete working examples:

• basic-agent.ts - Simple agent usage
• smart-tool-calling.ts - Smart tool calling with retry and caching
• mcp-server.ts - MCP server with tools and resources
• mcp-server-websocket.ts - MCP server with WebSocket
• llm-router.ts - Intelligent routing between LLMs
• chatbot-basic.ts - Chatbot with conversation memory
• chatbot-with-router.ts - Chatbot using router
• api-requests.ts - HTTP requests with retry

Running Examples

# Install dependencies
npm install

# Run an example
npx ts-node examples/basic-agent.ts

---

API Reference

Agent API

createAgent(config: AgentConfig)

Creates a new AI agent instance.

Parameters:

• provider (required): LLM provider - "openai", "anthropic", "gemini", or "ollama"
• model (optional): Model name (defaults to provider's default)
• temperature (optional): Sampling temperature 0-2 (default: 0.7)
• maxTokens (optional): Maximum tokens in response (default: 2000)
• apiKey (optional): API key (reads from env if not provided)
• tools (optional): Array of tool definitions
• system (optional): System prompt
• toolConfig (optional): Smart tool calling configuration

Returns: Agent instance

Methods:

• chat(message: string): Promise - Send a message and get response
• executeTool(name: string, params: any): Promise - Execute a tool directly

AgentResponse

Response object from agent.chat():

{
  content: string;           // Response text
  toolCalls?: Array;
  usage?: {                  // Token usage
    promptTokens: number;
    completionTokens: number;
    totalTokens: number;
  };
}

MCP Server API

createMCPServer(config: MCPServerConfig)

Creates a new MCP server instance.

Parameters:

• name (optional): Server name (default: from env or "mcp-server")
• port (optional): Port number (default: 7777)
• logLevel (optional): Log level - "debug", "info", "warn", "error"
• tools (optional): Array of tool definitions
• resources (optional): Array of resource definitions

Returns: MCP Server instance

Methods:

• start(transport?: "stdio" | "websocket"): Promise - Start the server

Router API

createLLMRouter(config: LLMRouterConfig)

Creates a new LLM router instance.

Parameters:

• rules (required): Array of routing rules
• fallback (optional): Fallback provider configuration
• retryAttempts (optional): Number of retry attempts (default: 3)
• logLevel (optional): Log level

Returns: Router instance

Methods:

• route(input: string): Promise - Route input to appropriate LLM
• getStats(): object - Get router statistics
• listAgents(): string[] - List all configured agents

Chatbot API

createChatbot(config: ChatbotConfig)

Creates a new chatbot instance with conversation memory.

Parameters:

• agent or router (required): Agent or router instance
• system (optional): System prompt
• maxHistory (optional): Maximum messages to keep (default: 10)

Returns: Chatbot instance

Methods:

• chat(message: string): Promise - Send message with context
• getHistory(): ChatMessage[] - Get conversation history
• getStats(): object - Get conversation statistics
• reset(): void - Clear conversation history
• setSystemPrompt(prompt: string): void - Update system prompt

API Request Helpers

api.request(config: APIRequestConfig)

Make HTTP request with retry and timeout.

Parameters:

• name (optional): Request name for logging
• url (required): Request URL
• method (optional): HTTP method (default: "GET")
• headers (optional): Request headers
• query (optional): Query parameters
• body (optional): Request body
• timeout (optional): Timeout in ms (default: 30000)
• retries (optional): Re

…

Source & license

This open-source MCP server is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: dominiquekossi
• Source: dominiquekossi/mcp-agent-kit
• License: MIT

Install and usage instructions live in the source repository linked above.