MCP Lambda Server

Name: MCP Lambda Server
Author: markvp

@markvp

代码仓库

关于 MCP Lambda Server

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

基本信息

分类

云与基础设施

许可证

MIT

运行时

node

传输方式

stdio

发布者

markvp

配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "mcp-lambda-layer": {
      "command": "npx",
      "args": [
        "@markvp/mcp-lambda-sam",
        "deploy"
      ]
    }
  }
}

工具

未检测到工具

工具是从 README 中自动提取的。维护者可以在 ## Tools 标题下列出工具,即可填充这部分内容。

概览

What is MCP Lambda Server?

MCP Lambda Server is a serverless implementation of the Model Context Protocol (MCP) built on AWS Lambda and SAM. It exposes two interfaces: a System Configuration API for administrators to register tools, resources, and prompts, and a System Usage interface for clients to establish SSE connections and send JSON-RPC commands. It is intended for developers and administrators deploying MCP servers on AWS.

How to use MCP Lambda Server?

Deploy using npx @markvp/mcp-lambda-sam deploy, the AWS SAM CLI, or via the AWS Serverless Application Repository (SAR). After deployment, administrators use the Registration API (endpoints under /register) to manage tools. Clients connect to the /sse endpoint, receive a session ID, then send JSON-RPC messages to /message?sessionId=.... All requests require AWS SigV4 signed IAM authentication.

Key features of MCP Lambda Server

Serverless MCP implementation using AWS Lambda and DynamoDB
Administrative registration of tools, resources, and prompts
Client SSE streaming and JSON-RPC message handling
IAM-based authentication for all endpoints
Supports multiple deployment methods (SAR, npx, programmatic)
Session persistence via DynamoDB Session Table
Dynamic invocation of registered Lambda tools by ARN

Use cases of MCP Lambda Server

Deploy a fully serverless MCP server for AI assistants or agents
Register custom Lambda functions as MCP tools with defined schemas
Provide an administrative interface for managing tool inventory and permissions
Enable clients to stream MCP responses over SSE with session isolation

FAQ from MCP Lambda Server

How do I deploy MCP Lambda Server?

Use npx @markvp/mcp-lambda-sam deploy, the AWS SAM CLI (sam build && sam deploy --guided), or the AWS Serverless Application Repository (SAR). You need AWS CLI, SAM CLI, Node.js 20+, and an AWS account with permissions to create Lambda functions, DynamoDB tables, IAM roles, and SQS queues.

What authentication is required for endpoints?

All endpoints use IAM authentication via AWS SigV4. Administrators need lambda:InvokeFunctionUrl permission on the registration function; clients need the same permission on the MCP function.

How do I register a new tool?

Send a POST request to ${REGISTRATION_URL}/register with a JSON body containing type ("tool"), name, description, lambdaArn, and parameters. Use awscurl or any AWS SigV4 signed HTTP client.

Where is session state persisted?

Session state is stored in a DynamoDB Session Table. The table is created during deployment and used by the MCP Lambda function.

What are common client errors?

401 (invalid/missing credentials), 403 (insufficient permissions), 404 (invalid session ID), and 429 (rate limit exceeded). Troubleshoot by verifying AWS credentials, IAM permissions, session ID validity, and network connectivity.

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