News, tutorials, and insights from the LocalStack team on cloud emulation, product showcases, and local development practices.https://blog.localstack.cloud/https://blog.localstack.cloud/your-agent-just-deleted-prod/https://blog.localstack.cloud/your-agent-just-deleted-prod/Real horror stories of AI agents deleting production and running up surprise cloud bills, what they have in common, and how to give agents a sandbox instead of the keys to prod.Tue, 10 Nov 2026 00:00:00 GMThttps://blog.localstack.cloud/what-is-kiro-crew/https://blog.localstack.cloud/what-is-kiro-crew/Kiro Crew runs AI agents on a schedule. Build a Crew app that deploys an AWS app to LocalStack, tests it, and has the agent diagnose an IAM failure.Thu, 05 Nov 2026 00:00:00 GMThttps://blog.localstack.cloud/lstk-doctor-corporate-proxy/https://blog.localstack.cloud/lstk-doctor-corporate-proxy/Proxies, TLS inspection, and locked-down laptops can stall a first LocalStack run. lstk doctor runs 11 checks in one pass, finds the root cause, and gives you the exact fix.Thu, 29 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/give-every-ai-agent-its-own-ephemeral-instance/https://blog.localstack.cloud/give-every-ai-agent-its-own-ephemeral-instance/We pointed several AI agents to build an AWS app in parallel, using the LocalStack MCP Server. Each agent built a different part of the app in its own Git worktree and deployed to a separate Ephemeral Instance, avoiding conflicts and making it easier for agents to work independently.Tue, 27 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/running-lambda-web-functions-locally-with-localstack/https://blog.localstack.cloud/running-lambda-web-functions-locally-with-localstack/Learn how to run AWS Lambda Web Functions locally with LocalStack by deploying an Express URL shortener backed by DynamoDB and S3 with the AWS CLI, calling its endpoint, and reading its logs and metrics.Thu, 22 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/state-of-ai-in-cloud/https://blog.localstack.cloud/state-of-ai-in-cloud/309 developers and managers on AI in software development: 79% give AI agents cloud access, 97% worry, and nearly 40% of AI code never ships.Tue, 20 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/event-hubs-app-with-localstack-azure/https://blog.localstack.cloud/event-hubs-app-with-localstack-azure/Build and test a real-time payment fraud detection pipeline locally with LocalStack for Azure. Stream payments through Event Hubs using AMQP, Kafka, and HTTPS, process them with Azure Functions, and explore checkpoints, Event Hubs Capture, and Blob Storage before deploying to Azure.Wed, 14 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/aws-lambda-web-functions-are-here/https://blog.localstack.cloud/aws-lambda-web-functions-are-here/AWS Lambda Web Functions let you run full web apps and API backends on Lambda, with no adapters or custom configuration. LocalStack supports them from day one, so you can build and test those apps locally, alongside the rest of your application, before deploying to AWS.Tue, 13 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/localstack-for-aws-release-2026-10-0/https://blog.localstack.cloud/localstack-for-aws-release-2026-10-0/LocalStack for AWS 2026.10.0 introduces Lambda Web Functions for running Node.js web applications behind HTTPS endpoints, adds native EventBridge Scheduler emulation, and expands API Gateway behavior.Tue, 13 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/localstack-for-azure-public-preview/https://blog.localstack.cloud/localstack-for-azure-public-preview/Run core Azure services on your own machine. Build and test Azure applications locally, self-serve and free during the preview.Wed, 07 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/running-amplify-gen2-apps-locally-with-localstack/https://blog.localstack.cloud/running-amplify-gen2-apps-locally-with-localstack/Learn how to deploy an AWS Amplify Gen 2 backend to LocalStack with ampx sandbox, run the React frontend against the local Cognito and AppSync endpoints, inspect the resources Amplify created, and iterate on the schema without an AWS account.Tue, 06 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/localstack-for-aws-release-2026-09-0/https://blog.localstack.cloud/localstack-for-aws-release-2026-09-0/LocalStack for AWS 2026.09.0 adds S3 Files, makes the new DynamoDB and Kinesis engines the default, adds Timestream scheduled queries, and expands CloudFormation update support.Fri, 02 Oct 2026 00:00:00 GMThttps://blog.localstack.cloud/test-snowflake-sql-locally-with-your-ai-agent/https://blog.localstack.cloud/test-snowflake-sql-locally-with-your-ai-agent/We gave Claude Code the LocalStack MCP server and a CSV export of SaaS billing data, then asked it to build a quarterly Revenue-by-Plan report on our Snowflake emulator. It loaded the data, found & fixed two bugs, and proved the result, without touching the real Snowflake cloud.Tue, 29 Sep 2026 00:00:00 GMThttps://blog.localstack.cloud/testing-cognito-authentication-flows-locally-with-localstack/https://blog.localstack.cloud/testing-cognito-authentication-flows-locally-with-localstack/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.Fri, 25 Sep 2026 00:00:00 GMThttps://blog.localstack.cloud/give-your-ai-agent-an-undo-button-for-aws-state/https://blog.localstack.cloud/give-your-ai-agent-an-undo-button-for-aws-state/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.Wed, 23 Sep 2026 00:00:00 GMT