LocalStack

Your coding agent can start LocalStack, deploy your infrastructure, and debug it, all from the chat. Here's the LocalStack MCP Server in under a minute: 1️⃣ Run one command: npx -y @localstack/localstack-mcp-server init 2️⃣ Pick your MCP clients. The wizard detects Claude Code, Cursor, VS Code, Codex, OpenCode, Amazon Q CLI and more, then writes the config for you. 3️⃣ Ask your agent: "Start LocalStack, then create an S3 bucket called mcp-demo and list my buckets." That's it. Claude Code calls the LocalStack MCP tools, starts the container, runs the AWS commands against your local cloud, and reports back. The MCP server is in public preview and needs a LocalStack Auth Token. Give it a spin and tell us what you'd want your agent to do next. 🔗 https://lnkd.in/essXgjjV #LocalStack #MCP #AWS #AIAgents #DeveloperTools

🚀 LocalStack for AWS 2026.09.0 is out! Our latest release brings major enhancements to our AWS cloud emulation. Key Highlights include: • S3 Files Support: Mount versioned S3 bucket data directly into Lambda, ECS, and Batch workloads using standard file system operations. • New Engine Defaults: The next-gen DynamoDB and Kinesis engines are now default for all users, bringing shard-aware pollers, concurrent processing, and checkpointing to EventBridge Pipes & Lambda ESMs. • Timestream Scheduled Queries: Full lifecycle support for scheduled queries, execution parameters, and SNS notifications. • Expanded Observability & IaC: CloudWatch Logs Insights query support in the v2 provider, expanded AppSync GraphQL/Events features, and new CloudFormation resource support. The easiest way to upgrade? Just run lstk to pull the latest image automatically. Catch the full changelog on our blog: https://lnkd.in/ggTXPAHg #AWS #LocalStack #CloudDevelopment #DevOps #Serverless #SoftwareEngineering

Say goodbye to onboarding friction and cryptic startup errors when getting started with LocalStack. Setting up local cloud environments can sometimes get tripped up by an untrusted corporate proxy, insufficient RAM allocation, or hidden DNS misconfigurations, etc. LocalStack's new lstk CLI recently introduced the lstk doctor command to eliminate these headaches. Key benefits for engineering teams and developers: • Zero-Guesswork Onboarding: Diagnostics run in seconds before your first lstk start, surfacing issues instantly. • Actionable Self-Healing: Every check comes with concrete, copy-paste fixes (like required environment variables or config tweaks) rather than generic error codes. • Proactive Prevention: Validates network connectivity, container engine availability, memory, and TLS certificate chains concurrently. • Safe & Non-Intrusive: It only inspects your environment. It won't alter your system or require a running emulator to work. Whether you're setting up local AWS development on a new machine or onboarding new team members, lstk doctor helps get you up and running faster without frustration. Learn how to simplify your local setup: https://lnkd.in/gxzhMmmE #DeveloperExperience #AWS #LocalStack #CloudDevelopment #DevOps #SoftwareEngineering

Calling our Japan community! Tokyo local dev enthusiasts, we're coming your way. Join our CTO Waldemar Hummer on October 8 at 6:30 PM for an evening of talk and networking at XLSoft. It's free, so reserve your spot today: https://lnkd.in/e4TfeuKt

We gave Claude Code the LocalStack MCP server and a CSV export of SaaS billing data. We asked it to build a quarterly Revenue-by-Plan report on our Snowflake emulator. Here's what it did: 1. Loaded the data 2. Found & fixed two bugs 3. Proved the result All of this happened without ever touching the real Snowflake cloud. Read the details: https://lnkd.in/eUN4ue3m

In case you missed the announcement last week: AWS Lambda Durable Functions are now officially supported in LocalStack! This will help you eliminate slow deploy-and-test cycles. With LocalStack, you can now run and debug your entire durable workflow locally from start to finish. In this step-by-step tutorial, Harsh Mishra walks through how to: 📦 Deploy a durable order-processing workflow with AWS CDK 🔄 Test step retries and exponential backoffs against a flaky API ⏸️ Pause executions and resume them asynchronously using callbacks 💥 Simulate crash recovery and container restarts mid-execution to verify persistence Check out the full walkthrough on the LocalStack blog: https://lnkd.in/dPUR4SHc #AWS #Serverless #Lambda #LocalStack #CloudDevelopment #DevOps

Auth is one of those things that somehow always ends up depending on a shared cloud environment. It doesn’t have to. In our latest tutorial, Harsh Mishra walks through testing Amazon Cognito authentication flows locally with LocalStack, including: 🔐 Hosted UI login with auth code + PKCE 🔑 JWT verification with API Gateway 📱 TOTP multi-factor authentication 🤖 Machine-to-machine tokens with client credentials 🏗️ Terraform provisioning for the whole setup Test the full authentication path locally without shared test users, real AWS credentials, or waiting on a deployment. Read the tutorial: https://lnkd.in/gaCdwchB

Lambda + RDS + Kubernetes + Terraform... all running locally. ☁️🚫 In this 5-minute demo, we use LocalStack, Kind, and Terraform to spin up a complete serverless + database stack without touching AWS. You’ll see: ⚡ AWS Lambda running locally 🐬 RDS MySQL running locally ☸️ Resources running as Kubernetes pods 🏗️ Infrastructure provisioned with Terraform 💸 No cloud cost required If “I’ll just test it in AWS” has ever come back to haunt your bill, this one’s for you. Watch now 👇 https://lnkd.in/gazMJ7Zz

Your AI agent can deploy infrastructure. Cool. But can it recover when a “harmless” one-line change deletes your data? 😬 In our latest tutorial, we gave Claude Code access to the LocalStack MCP server and a real AWS CDK app. The agent: ✅ Deployed the stack ✅ Saved the working state as a Cloud Pod 💥 Made a change that silently wiped the data 🔄 Detected the problem and rolled everything back 🛠️ Fixed the issue and saved a new checkpoint All through MCP. Because sometimes your AI agent needs an undo button too. https://lnkd.in/eiG7ip8v

Learn how to build and test Lambda Durable Functions locally with LocalStack by deploying an order-processing workflow with CDK, watching checkpointed steps retry a flaky payment gateway, surviving a mid-execution restart, and resuming the workflow with a callback. Read our tutorial 👉 https://lnkd.in/dPUR4SHc #LocalStack #Lambda #DurableFunctions #CDK