Aws Blocks

This covers AWS Blocks, an infrastructure-from-code framework that bundles CDK, SDK, and local mocks into a single API. You define your entire backend in one aws-blocks directory, and the frontend gets fully typed imports without code generation. It ships with 18+ building blocks for storage, auth, realtime, background jobs, and more, all of which run locally without AWS credentials. The skill guides you through scaffolding projects, picking the right building blocks like KVStore or AuthCognito, and deploying with least-privilege credentials. One thing to note: API methods are unauthenticated by default, so you need to explicitly call requireAuth on anything that shouldn't be public. Good fit if you want fast local development with a clear path to production AWS infrastructure.

skills.sh installs: 5.9K
GitHub stars: 3.4K
last updated: Aug 21, 2026

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Install

$ npx -y skills add aws/agent-toolkit-for-aws --skill aws-blocks --agent claude-code

Installs into .claude/skills of the current project.

Files

AWS Blocks Application Development

Package naming: All packages are published under the @aws-blocks scope (e.g., @aws-blocks/core, @aws-blocks/blocks, @aws-blocks/bb-kv-store).

Overview

AWS Blocks is an Infrastructure-from-Code framework where Building Blocks bundle CDK, SDK, and local mocks into a single API. It provides 18+ Building Blocks covering storage, authentication, real-time communication, background jobs, file management, AI/search, email, and observability — all working locally without AWS credentials.

Key characteristics:

One aws-blocks/ directory defines the entire backend
Frontend imports are fully typed — no client generation needed
All Building Blocks work locally without AWS (mocks persist to .bb-data/)
Deploy ephemeral, individual testing environments with npm run sandbox and long-lived environments with npm run deploy using least-privilege credentials

Scaffolding a New Project

npx @aws-blocks/create-blocks-app my-app
cd my-app

To add AWS Blocks to an existing project:

npx @aws-blocks/create-blocks-app .

SKILL.md on GitHub

Details

Repository: github.com/aws/agent-toolkit-for-aws
Categories: Backend & APIs, AI & Agent Building, Release Management, Cloud & Infrastructure, Databases
First seen: Jul 14, 2026