MCP Lambda SAM MCP Server

An AWS Serverless Application Model that operates as an MCP server via serverless AWS resources

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What is the MCP Lambda SAM MCP server?

MCP Lambda SAM MCP server exists for a simple reason — assistants are far more useful when they can act on MCP Lambda SAM directly instead of describing what you should do. An AWS Serverless Application Model that operates as an MCP server via serverless AWS resources.

What you get

Model Context Protocol (MCP) implementation using AWS Lambda and SAM.

This project provides a serverless implementation of the Model Context Protocol, with two distinct interfaces:

What the assistant can call

Once MCP Lambda SAM is connected, these are the calls the assistant has available:

  • Deployment — The command will interactively prompt for administrative configuration: - Stack name (for multiple instances) - AWS Region - VPC configuration
  • Troubleshooting — 1. Connection Issues: - Verify AWS credentials - Check IAM permissions - Ensure network connectivity

Configuration and credentials

You will need one environment variable: REGISTRATION_URL. The server will not start without them, which is usually why the tools fail to appear on a first run. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

  • AWS CLI installed and configured - AWS SAM CLI installed - Node.js 20.x or later - An AWS account with permissions to create: - Lambda functions - DynamoDB tables - IAM roles - SQS queues

Setting it up

@markvp/mcp-lambda-sam on npm is all you need. Most clients run it directly, so configuration is a few lines and a restart.

Choosing this one

Plenty of cloud and infrastructure servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. MCP Lambda SAM's toolset — Deployment, Troubleshooting — is a fair guide to whether it matches your workflow. It is maintained by markvp; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.

Before you rely on it

  • It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the mcp lambda sam mcp server does with a few real requests.

Available tools

ToolWhat it does
DeploymentThe command will interactively prompt for administrative configuration: - Stack name (for multiple instances) - AWS Region - VPC configuration (optional)
Troubleshooting1. **Connection Issues**: - Verify AWS credentials - Check IAM permissions - Ensure network connectivity

How to install the MCP Lambda SAM MCP server

{
  "mcpServers": {
    "lambda-sam": {
      "command": "npx",
      "args": ["-y", "@markvp/mcp-lambda-sam"],
      "env": {
        "REGISTRATION_URL": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

  • AWS CLI installed and configured - AWS SAM CLI installed - Node.js 20.x or later - An AWS account with permissions to create: - Lambda functions - DynamoDB tables - IAM roles - SQS queues
VariableDescriptionRequired
REGISTRATION_URLEndpoint or connection string the server talks to.Yes

Example prompts to try

  • Use MCP Lambda SAM to Deployment.
  • Use MCP Lambda SAM to Troubleshooting.

Frequently asked questions

AWS CLI, AWS SAM CLI, Node.js 20.x or later, and an AWS account with permissions to create Lambda functions, DynamoDB tables, IAM roles, and SQS queues.