leanmcp-sdk

Overview

LeanMCP SDK is a comprehensive TypeScript framework for creating production-ready MCP servers. It provides enterprise-grade features including authentication, multi-tenant isolation, request logging, observability, and cloud deployment options. The SDK offers modular architecture with packages for core functionality, authentication, UI components, and utilities, making it suitable for building agent platforms, customer-facing workflows, and multi-tenant SaaS AI systems. The CLI tool simplifies project creation and deployment with scaffolding and management commands.

Try asking AI

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

• addasync add(input: AddInput): Promise<{ result: number }>

  Calculate sum of two numbers

  Try:Add 5 and 7Try:What is 12 plus 19?
• searchDocsasync searchDocs(query: string): Promise<unknown>

  Search documents using a query

  Try:Search for information about authenticationTry:Find documents about MCP servers
• getUserDataasync getUserData(): Promise<unknown>

  Retrieve user data (requires authentication)

  Try:Get my user profile dataTry:Fetch my account information
• analyzeSentimentasync analyzeSentiment(args: AnalyzeSentimentInput): Promise<AnalyzeSentimentOutput>

  Analyze sentiment of text

  Try:Analyze the sentiment of this review: 'This product is amazing!'Try:What's the sentiment of 'I hate this service'?
• greetingPromptgreetingPrompt(args: { name?: string }): Promise<unknown>

  Generate a greeting prompt template

  Try:Create a greeting for JohnTry:Generate a hello prompt
• getStatsgetStats(): Promise<{ uptime: number; requestCount: number }>

  Retrieve service statistics

  Try:Show me server statisticsTry:What's the current uptime?

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Installation

# Install CLI globally
npm install -g @leanmcp/cli

# Create a new MCP server project
npx @leanmcp/cli create my-mcp-server
cd my-mcp-server
npm install

# Run the server
npm start

{
  "mcpServers": {
    "leanmcp": {
      "command": "npx",
      "args": ["@leanmcp/cli", "run"]
    }
  }
}

FAQ

How does LeanMCP handle multi-tenancy?

LeanMCP provides multi-tenant isolation through the @leanmcp/auth package, which handles authentication and request-scoped environment injection for different tenants.

Can I deploy LeanMCP servers to private cloud?

Yes, LeanMCP supports private cloud deployment with enterprise-grade options. Contact founders@leanmcp.com for deployment support.

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