Learn how to build and test Cognito flows against LocalStack: the hosted UI with auth code and PKCE, JWT verification against the pool's JWKS in an API Gateway authorizer, TOTP multi-factor auth, and machine-to-machine tokens from the client credentials grant.
Announcing the LocalStack for Snowflake 2026.08.0 Release
Snowflake-Next enters preview, while LocalStack for Snowflake 2026.08.0 improves…
Announcing the LocalStack for AWS 2026.08.0 Release
LocalStack for AWS 2026.08.0 adds Lambda Durable Functions, CloudFront Functions with…
Announcing the LocalStack for Snowflake 2026.07.0 Release
LocalStack for Snowflake 2026.07.0 fixes persistence across restarts and improves…
Announcing the LocalStack for AWS 2026.07.0 Release
LocalStack for AWS 2026.07.0 adds Step Functions HTTP Tasks, Aurora DSQL CloudFormation…
Stop writing bigger and bigger prompts for your AI coding agent. Learn how to build an AI-native AWS development environment using Cursor Rules, agent skills and plugins, the AWS MCP Server, and LocalStack so your agent has what it needs to build, test, and debug AWS applications locally before touching a real cloud account.
We’re launching the LocalStack Champions program to recognize developers who build, share, and support others in the community. If you’re creating content, helping in Slack, or building with LocalStack, this is your opportunity to get recognized.
The LocalStack for Open Source program offers free licenses of LocalStack for AWS and LocalStack for Snowflake to eligible community open source projects to help speed up their development and lower their costs.
Meet lstk, the new recommended LocalStack CLI. One install replaces the localstack CLI, awslocal, and Python dependencies, with browser-based login, unified snapshot management, TOML config, and the same commands in local development and CI/CD.
AT Protocol is more than just Bluesky. This post explains what ATproto is, why it matters for event-driven apps, and how to build a reusable AWS pipeline for consuming it — including testing the full stack on LocalStack before touching a real account.
Learn how to test AWS Fargate container workloads locally with LocalStack by deploying a CDK stack that runs a message-driven Go app on ECS Fargate, processing SQS messages into DynamoDB, and validating the full flow with integration tests.
AWS ships a fleet of official MCP servers that let agents write IaC, validate it, and invoke Lambda functions. Point them at LocalStack instead of real AWS, and an agent can build, harden, deploy, and test the cloud app locally. Here is how we wired them up and what happened.
We gave Claude Code the LocalStack MCP server and a production bug report about a broken dead-letter queue, then watched it deploy, reproduce the failure from App Inspector traces, fix the pipeline, and prove the fix, without touching an AWS account.
AI agents are getting capable enough to provision infrastructure and execute code with real consequences. Here's a taxonomy of AI sandboxes and where LocalStack fits as the missing cloud infrastructure layer.
Learn how to build and test Cognito flows against LocalStack: the hosted UI with auth code and PKCE, JWT verification against the pool's JWKS in an API Gateway authorizer, TOTP multi-factor auth, and machine-to-machine tokens from the client credentials grant.
We gave Claude Code the LocalStack MCP server and a real AWS CDK app, then made a one-line change that looked harmless, which then silently destroyed the data on deployment. The agent caught it, rolled back to a Cloud Pod, and we fixed it forward, all through the MCP server.
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 restart mid-execution, and resuming the workflow with a callback.
We asked Claude Code to run a chaos game day against a serverless data pipeline on LocalStack: define a steady state, inject faults into every hop, diagnose the failures from App Inspector traces, fix the pipeline, and prove the fix by replaying the same faults.
Learn how to test AWS Fargate container workloads locally with LocalStack by deploying a CDK stack that runs a message-driven Go app on ECS Fargate, processing SQS messages into DynamoDB, and validating the full flow with integration tests.
AWS ships a fleet of official MCP servers that let agents write IaC, validate it, and invoke Lambda functions. Point them at LocalStack instead of real AWS, and an agent can build, harden, deploy, and test the cloud app locally. Here is how we wired them up and what happened.
Learn about LocalStack's acquisition of WonderTwin AI and how application emulation enables agentic full-stack emulation for AI-native software development.
Meet lstk, the new recommended LocalStack CLI. One install replaces the localstack CLI, awslocal, and Python dependencies, with browser-based login, unified snapshot management, TOML config, and the same commands in local development and CI/CD.
One theme kept coming up in nearly every one of the hundreds of conversations we had at AWS Summit NYC: AI agents are already writing infrastructure code, and engineering teams are still figuring out how to test it safely.
We launched a dedicated entry point that lets your AI agent discover, install, and start using LocalStack without you having to explain anything. Here's what's in it and why we built it.
App Inspector gives engineering teams full transparency within their local development environment by continuously monitoring your emulated AWS environment to surface hidden issues, helping your team understand what is happening, where, and why.
We’re launching the LocalStack Champions program to recognize developers who build, share, and support others in the community. If you’re creating content, helping in Slack, or building with LocalStack, this is your opportunity to get recognized.
AT Protocol is more than just Bluesky. This post explains what ATproto is, why it matters for event-driven apps, and how to build a reusable AWS pipeline for consuming it — including testing the full stack on LocalStack before touching a real account.
Stop writing bigger and bigger prompts for your AI coding agent. Learn how to build an AI-native AWS development environment using Cursor Rules, agent skills and plugins, the AWS MCP Server, and LocalStack so your agent has what it needs to build, test, and debug AWS applications locally before touching a real cloud account.
AI agents are getting capable enough to provision infrastructure and execute code with real consequences. Here's a taxonomy of AI sandboxes and where LocalStack fits as the missing cloud infrastructure layer.
You've run kubectl apply a thousand times. But what actually happens? This post breaks down the full Kubernetes deployment lifecycle, every component, every handoff, and shows you how to watch it happen live with LocalStack.
App Inspector is LocalStack's built-in observability layer that shows you every AWS API call, IAM permission evaluation, and full request/response payload your app makes locally, before it ever hits a real AWS account.
New to LocalStack but familiar with AWS? Learn what LocalStack is, why it speeds up your development workflow, and how to get your first local AWS environment running in minutes.
