Agent Toolkit for AWS is a collection of AWS-supported MCP servers, skills, plugins, commands, and hooks that help AI coding agents build, deploy, and manage applications on AWS. It is used by developers working with AWS services through agents such as Claude Code, Codex, Cursor, and Kiro. The catalogue entries are the toolkit's own agent extensions for AWS development and operations.
Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add aws/agent-toolkit-for-aws --skill aws-blocksgit clone --depth 1 https://github.com/aws/agent-toolkit-for-awsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/aws/agent-toolkit-for-aws/aws-blocks)<a href="https://agentmods.dev/skills/aws/agent-toolkit-for-aws/aws-blocks"><img src="https://agentmods.dev/badge/skills/aws/agent-toolkit-for-aws/aws-blocks/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/aws/agent-toolkit-for-aws/aws-blocks"><img src="https://agentmods.dev/badge/skills/aws/agent-toolkit-for-aws/aws-blocks.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- Socket pass
- Snyk pass
- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium MCP Rug Pull · line 24 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 31 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 39 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 47 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00105 | $0.01058 |
| Opus 5.5 | $0.00042 | $0.00423 |
| Sonnet 5.5 | $0.00021 | $0.00212 |
| Haiku 4.5 | $0.00011 | $0.00106 |
Grade A, and why
aws-blocks scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 1mo ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
1 near-identical copy found in the catalogue:
- aws-blocks — 98% identical, 13 lines differ
How it starts
The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AWS Blocks Application Development
Package naming: All packages are published under the
@aws-blocksscope (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 sandboxand long-lived environments withnpm run deployusing 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 .
This detects the existing project and adds an aws-blocks/ workspace alongside your code.
To add AWS Blocks to an Amplify Gen 2 project:
npx @aws-blocks/create-blocks-app .
When the CLI detects amplify/backend.ts, it automatically integrates AWS Blocks with your Amplify backend.
With a specific template:
npx @aws-blocks/create-blocks-app my-app --template demo
cd my-app
Available Templates
| Template | Description |
|---|---|
default |
Vite + lit-html starter app with basic authentication, data persistence, and realtime to help demonstrate basic app architecture and patterns (used when --template is omitted) |
bare |
Vite + lit-html starter with a single "hello world" API method and a bare frontend |
react |
React + Vite starter with a single API endpoint and typed React frontend |
backend |
Backend-only — no frontend, just the AWS Blocks API with a single endpoint |
demo |
Todo app with AuthBasic, KVStore, DistributedTable, Zod schemas, indexes, and auth-protected CRUD |
auth-cognito |
Full AuthCognito passwordless email-OTP with roles, device management, and Authenticator UI |
nextjs |
Next.js + React starter with AWS Blocks backend integration (SSR + Server Components) |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 1mo ago First seen · 89 lines · 105 tokens per session scan A 5ccde623192b
aws-blocks is a skill published in the GitHub repository aws/agent-toolkit-for-aws (2,915 stars, last pushed today), licensed Apache-2.0. It adds 105 tokens to every session and 1,058 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
Other skills, from other repositories
stripe-projects
Provision SaaS services + sync creds via Stripe Projects.
django-storages-s3
Use when configuring Django to store static and media files on AWS S3 with django-storages. Invoke when working with the STORAGES setting, S3 buckets, presigned URLs, CloudFront, or boto3-backed file storage in settings.py. Configures the Django 4.2+ STORAGES dict, public/private custom backends, presigned GET/POST…
websocket-engineer
Use when building real-time communication systems with WebSockets or Socket.IO. Invoke for bidirectional messaging, horizontal scaling with Redis, presence tracking, room management.
azure-eventhub-dotnet
Azure Event Hubs SDK for .NET. Use for high-throughput event streaming: sending events (EventHubProducerClient, EventHubBufferedProducerClient), receiving events (EventProcessorClient with checkpointing), partition management, and real-time data ingestion. Triggers: "Event Hubs", "event streaming"…
azure-mgmt-botservice-dotnet
Azure Resource Manager SDK for Bot Service in .NET. Management plane operations for creating and managing Azure Bot resources, channels (Teams, DirectLine, Slack), and connection settings. Triggers: "Bot Service", "BotResource", "Azure Bot", "DirectLine channel", "Teams channel", "bot management .NET", "create bot".
wikipedia
Search and read Wikipedia via x wkp — MediaWiki API, no API key, zero install; query, extract, suggest, and DDG route in one module. Load for wiki, wikipedia, encyclopedia lookup, article summary.