mcp-lambda-handler
A Python library for creating serverless HTTP handlers for the Model Context Protocol (MCP) using AWS Lambda. This library provides a minimal, extensible framework for building MCP HTTP endpoints with
Score
78/100
9,446 stars
1,457 forks
A low score is not a verdict on quality. Young and niche tools start low by design. How we calculate scores
The Open Source Drop Lens
This handler flips the script. Instead of calling Lambda from MCP, it lets you run an MCP server as a Lambda function. Your AI tools become serverless endpoints. Setup requires packaging your MCP server as a Lambda deployment.
Lambda's free tier is generous, but cold starts add latency to tool calls. This is a library, not a standalone server, so you need to write the glue code yourself.
Interesting pattern for teams that want centralized, shared MCP tools without running persistent servers. The catch: cold starts make interactive tool use sluggish, and debugging Lambda-hosted MCP servers is harder than local ones.
Cost Breakdown
fully freeFree Tier
The MCP server itself is completely free and open source.
Self-Hosted
Runs locally or on your own infrastructure.
Paid
No paid tier. The underlying service may have its own pricing.
Free and open source. The underlying service may have its own costs.
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