aws-serverless-eda

A guidance skill for building AWS applications that run without managing servers and communicate through events. AWS is Amazon’s cloud platform; event-driven systems react to messages or events such as requests, queued jobs, or notifications.

In plain words
What is it for?
It supports serverless APIs, Lambda functions, REST APIs, microservices, and asynchronous workflows using services such as DynamoDB, Step Functions, EventBridge, SQS, and SNS.
Why use it?
It helps choose and combine AWS services for APIs, background work, and asynchronous processes while considering AWS architecture guidance.

Skill for Claude CodeCodex

Install

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.

agentmods
npx agentmods add skills/commandcodeai/agent-skills/aws-serverless-eda
Any agent
npx skills add CommandCodeAI/agent-skills --skill aws-serverless-eda
Clone the repo
git clone --depth 1 https://github.com/CommandCodeAI/agent-skills

Made for: Claude Code, Codex.

Per session 112 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,861 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00112 $0.04861
Opus 5 $0.00056 $0.02431
Sonnet 5 $0.00022 $0.00972
Haiku 4.5 $0.00011 $0.00486

Measured 2d ago against content hash 6b6b9a1f3d5b, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

aws-serverless-eda 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 2d 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.

skills/aws-serverless-eda/SKILL.md · 758 lines

How it starts

The opening of the file, as written. The whole thing — 758 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AWS Serverless & Event-Driven Architecture

This skill provides comprehensive guidance for building serverless applications and event-driven architectures on AWS based on Well-Architected Framework principles.

AWS Documentation Requirement

CRITICAL: This skill requires AWS MCP tools for accurate, up-to-date AWS information.

Before Answering AWS Questions

  1. Always verify using AWS MCP tools (if available):

    • mcp__aws-mcp__aws___search_documentation or mcp__*awsdocs*__aws___search_documentation - Search AWS docs
    • mcp__aws-mcp__aws___read_documentation or mcp__*awsdocs*__aws___read_documentation - Read specific pages
    • mcp__aws-mcp__aws___get_regional_availability - Check service availability
  2. If AWS MCP tools are unavailable:

    • Guide user to configure AWS MCP: See AWS MCP Setup Guide
    • Help determine which option fits their environment:
      • Has uvx + AWS credentials → Full AWS MCP Server
      • No Python/credentials → AWS Documentation MCP (no auth)
    • If cannot determine → Ask user which option to use

Serverless MCP Servers

This skill can leverage serverless-specific MCP servers for enhanced development workflows:

AWS Serverless MCP Server

Purpose: Complete serverless application lifecycle with SAM CLI

  • Initialize new serverless applications
  • Deploy serverless applications
  • Test Lambda functions locally
  • Generate SAM templates
  • Manage serverless application lifecycle

AWS Lambda Tool MCP Server

Purpose: Execute Lambda functions as tools

  • Invoke Lambda functions directly
  • Test Lambda integrations
  • Execute workflows requiring private resource access
  • Run Lambda-based automation

AWS Step Functions MCP Server

Purpose: Execute complex workflows and orchestration

  • Create and manage state machines
  • Execute workflow orchestrations
  • Handle distributed transactions
  • Implement saga patterns
  • Coordinate microservices

Amazon SNS/SQS MCP Server

Purpose: Event-driven messaging and queue management

  • Publish messages to SNS topics
  • Send/receive messages from SQS queues
  • Manage event-driven communication
  • Implement pub/sub patterns
  • Handle asynchronous processing

Read the full file on GitHub · 758 lines

Files

What ships with it

6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

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.

  1. 2d ago First seen · 758 lines · 112 tokens per session scan A 6b6b9a1f3d5b

Subscribe to this mod's changes

aws-serverless-eda is a skill published in the GitHub repository CommandCodeAI/agent-skills (120 stars, last pushed 5mo ago), licensed MIT. It adds 112 tokens to every session and 4,861 once invoked, about $0.0006 per session on Opus 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.

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