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Localstack MCP server

by localstack·io.github.localstack/localstack-mcp-server·v0.5.0·27 stars
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A LocalStack MCP Server providing essential tools for local cloud development & testing

B77/100grade B
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Safety scan
B77/100

full report

Adoption
Growing

27 stars224 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Localstack tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

1 medium
  • Code scan18 source files scanned20/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitystatic API keys via environment variables6/15
  • Maintenancelast push 4 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year9/10

Findings (1)

  • mediumeval / new Function usedexec.eval
    dist/174.js: …(this,"docker",void 0);const DockerCtor=eval("require")("dockerode");this.docker=new …
Overall 77/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Localstack compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
77/100
higher than 50% of 48,255 servers
GitHub stars
27
more than 91% of 28,688 servers
Downloads a week
224
more than 77% of 12,191 servers with a package

Install Localstack in Claude Code, Cursor or VS Code

Runs npx -y @localstack/localstack-mcp-server on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add localstack-mcp-server -- npx -y @localstack/localstack-mcp-server
Add to Cursor

What the publisher says

From the Localstack repository's README, as published. We do not edit it. Read it on GitHub

LocalStack MCP Server

Let an AI agent manage and interact with LocalStack on your machine.

[!IMPORTANT]

The LocalStack MCP server is currently available as an experimental public preview. For questions, issues or feedback, please utilize the LocalStack Community slack or submit a GitHub Issue

LocalStack emulates the cloud on your local machine so software teams and AI agents can validate security, quality, and reliability faster and more safely than the cloud allows. This Model Context Protocol (MCP) server lets any MCP client (Cursor, Claude, VS Code, and more) start LocalStack, deploy infrastructure, and debug your local cloud in natural language.

Quick start

Set up the server in your MCP client with the interactive wizard:

npx -y @localstack/localstack-mcp-server init

The wizard detects your installed clients, asks how you want to run the server, and writes the configuration for you. You need a LocalStack Auth Token; the wizard reads LOCALSTACKAUTHTOKEN from your environment or asks for it. For the full options, prerequisites, and manual setup, see Installation.

What you can ask your agent

Once the server is configured, talk to LocalStack through your agent in natural language:

  • "Start LocalStack and deploy the Terraform project in ./infra, then tell me which resources came up."
  • "My Lambda calls are failing. Read the LocalStack logs, find the permission errors, and generate an IAM policy that fixes them."
  • "Inject 500ms of latency into DynamoDB and confirm my retry logic still works."
  • "Search the LocalStack docs for how to enable S3 event notifications and summarize the steps."

How it works

The server connects MCP-compatible apps directly to your local LocalStack environment and its emulated AWS services, so your assistant can operate the stack securely without custom scripts or manual setup.

This server eliminates custom scripts and manual LocalStack management. Your agent can:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Localstack: common questions

Is Localstack MCP server safe?
Mostly: it is graded B (77/100). Read the Localstack safety report
How do I install Localstack?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Localstack need an API key?
Yes. The registry entry asks for LOCALSTACK_AUTH_TOKEN, AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_SESSION_TOKEN and 3 more.
Is Localstack maintained?
The last commit was 43 days ago (2026-09-22). The latest release is v0.5.0.
What can I use instead of Localstack?
Servers from other publishers that do the same job: Mobile MCP server.
How does Localstack compare with other MCP servers?
safety score 77/100 (higher than 50% of 48,255 servers); github stars 27 (more than 91% of 28,688 servers); downloads a week 224 (more than 77% of 12,191 servers with a package). Full comparison.

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