lambda-tool-mcp-server
A Model Context Protocol (MCP) server for AWS Lambda to select and run Lambda function as MCP tools without code changes.
Score
78/100
9,777 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
By Erik Loyd, SaaS CEO and former COO/CFO of an AWS Premier Partner.
Updated Jul 2026
Lambda Tool MCP lets your AI assistant invoke AWS Lambda functions by name. Pick a function, pass a payload, get the response. Config is AWS credentials plus an optional function filter.
Lambda pricing is pay-per-invocation, but the free tier covers a million requests per month. The MCP itself costs nothing. AWS Labs maintains it.
Great for testing and debugging Lambda functions without leaving your editor. The catch: no guardrails on which functions get invoked, so scope your IAM permissions tightly or you will have a bad day.
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 · underlying service may bill separately
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