Run Model Context Protocol Servers With Aws Lambda
What is MCP with AWS Lambda?
This project allows you to deploy Model Context Protocol (MCP) servers as serverless functions in AWS Lambda. Instead of running MCP servers locally on your machine, you can now run them in the cloud with AWS Lambda's scalability and cost-efficiency.How does it work?
The adapter wraps existing MCP stdio servers into Lambda functions. When invoked, it starts the MCP server process, handles the request/response cycle, and then shuts down the server - all within a single Lambda invocation.When should I use this?
Ideal for stateless MCP services that don't require persistent connections or maintain state between requests. Great for distributed applications that need to access MCP services from multiple locations.Key Features
Serverless DeploymentRun MCP servers without managing infrastructure using AWS Lambda
Automatic ScalingLambda automatically scales your MCP servers based on request volume
Cost EfficientOnly pay for actual compute time used by your MCP servers
Pros and Cons
Advantages
No server management required
Built-in high availability
Easy integration with other AWS services
Cost-effective for intermittent workloads
Limitations
Only works with stateless MCP servers
Requires custom client transport (for now)
Limited to Python and TypeScript servers
No support for server notifications
Getting Started
Package your MCP server
Include your MCP server code and dependencies in a Lambda deployment package
Create the Lambda handler
Write a handler function that initializes and runs your MCP server
Deploy to AWS Lambda
Upload your package and configure the Lambda function
Configure client access
Set up IAM permissions for clients to invoke your Lambda function
Example Use Cases
Time ServerSimple MCP server that returns the current time in a specified timezone
Weather AlertsMCP server that fetches weather alerts from weather.gov API
Frequently Asked Questions
Can I use existing MCP clients with Lambda servers?
What types of MCP servers work best with this approach?
How do I handle API keys or secrets?
Additional Resources
MCP Specification
Official Model Context Protocol documentation
AWS Lambda Documentation
AWS Lambda developer guide
Example GitHub Repository
Sample implementations and deployment templates
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