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AWS Serverless

Skills#backend#deployment

Build and deploy serverless apps on AWS Lambda.

From the AWS agent toolkit. Your agent builds, deploys, debugs and tunes serverless applications with Lambda, API Gateway, Step Functions and EventBridge, using SAM or CDK.

Install this skill

npx skills add https://github.com/aws/agent-toolkit-for-aws --skill aws-serverless

Runs the open-source skills CLI in your own terminal. It asks which agents to add the skill to. Read what it tells your agent to do before you install it.

Download skill (.zip)

Install for your agent

  • Claude Code

    Run this in your project

    npx skills add https://github.com/aws/agent-toolkit-for-aws --skill aws-serverless -a claude-code

    Add -g to install it for every project instead.

    Or ask Claude Code to do it

    Install the "aws-serverless" skill from https://github.com/aws/agent-toolkit-for-aws for Claude Code.
Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .claude/skills/ in this project.
Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.

    Or copy the folder yourself

    Unzip the download into .claude/skills/ for this project, or ~/.claude/skills/ for all your projects.

    Picked up in the current session, no restart needed.

    Claude Code skills docs
  • Claude.aiNot supported

    This skill is marked as not working in Claude.ai, usually because it needs a terminal or files that Claude.ai does not have.

    Claude.ai skills docs
  • ChatGPTNot supported

    This skill is marked as not working in ChatGPT, usually because it needs a terminal or files that ChatGPT does not have.

    ChatGPT skills docs
  • Codex

    Run this in your project

    npx skills add https://github.com/aws/agent-toolkit-for-aws --skill aws-serverless -a codex

    Add -g to install it for every project instead.

    Or ask Codex to do it

    Install the "aws-serverless" skill from https://github.com/aws/agent-toolkit-for-aws for Codex.
Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .agents/skills/ in this project.
Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.

    Or copy the folder yourself

    Unzip the download into .agents/skills/ for this project, or ~/.agents/skills/ for all your projects.

    Restart Codex if the skill does not show up.

    Codex skills docs
  • Cursor

    Run this in your project

    npx skills add https://github.com/aws/agent-toolkit-for-aws --skill aws-serverless -a cursor

    Add -g to install it for every project instead.

    Or ask Cursor to do it

    Install the "aws-serverless" skill from https://github.com/aws/agent-toolkit-for-aws for Cursor.
Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .cursor/skills/ in this project.
Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.

    Or copy the folder yourself

    Unzip the download into .cursor/skills/ for this project, or ~/.cursor/skills/ for all your projects.

    Run it by typing / and the skill name in chat.

    Cursor skills docs
  • GitHub Copilot

    Run this in your project

    npx skills add https://github.com/aws/agent-toolkit-for-aws --skill aws-serverless -a github-copilot

    Add -g to install it for every project instead.

    Or ask GitHub Copilot to do it

    Install the "aws-serverless" skill from https://github.com/aws/agent-toolkit-for-aws for GitHub Copilot.
Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .github/skills/ in this project.
Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.

    Or copy the folder yourself

    Unzip the download into .github/skills/ for this project, or ~/.copilot/skills/ for all your projects.

    Works in Copilot CLI, the cloud agent and agent mode in VS Code and JetBrains.

    GitHub Copilot skills docs
  • Antigravity

    Run this in your project

    npx skills add https://github.com/aws/agent-toolkit-for-aws --skill aws-serverless -a antigravity

    Add -g to install it for every project instead.

    Or ask Antigravity to do it

    Install the "aws-serverless" skill from https://github.com/aws/agent-toolkit-for-aws for Antigravity.
Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .agents/skills/ in this project.
Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.

    Or copy the folder yourself

    Unzip the download into .agents/skills/ for this project, or ~/.gemini/config/skills/ for all your projects.

    Antigravity skills docs
  • Gemini CLI

    Run this in your project

    npx skills add https://github.com/aws/agent-toolkit-for-aws --skill aws-serverless -a gemini-cli

    Add -g to install it for every project instead.

    Or ask Gemini CLI to do it

    Install the "aws-serverless" skill from https://github.com/aws/agent-toolkit-for-aws for Gemini CLI.
Copy the skill folder (the one containing SKILL.md, with any scripts or reference files next to it) into .gemini/skills/ in this project.
Before copying, show me the SKILL.md and list any scripts it includes, and wait for me to confirm.

    Or copy the folder yourself

    Unzip the download into .gemini/skills/ for this project, or ~/.gemini/skills/ for all your projects.

    Run /skills to check it was found.

    Gemini CLI skills docs
Installs
7.7K via skills.sh
GitHub
2.6K stars ↗
Last updated
11 Sept 2026
Licence
Apache-2.0

Security checks

Run by independent scanners and published on skills.sh. Their results, not a Viberation review.

  • Gen Agent Trust Hub Pass

    This skill provides comprehensive, high-quality documentation and reference material for building serverless applications on AWS. It includes extensive security guidance, such as least-privilege IAM configuration and secrets management, and follows industry best practices for the AWS platform.

    13 May 2026

  • Socket Pass

    No alerts

    13 May 2026

  • Snyk Pass

    Risk: LOW · No issues

    13 May 2026
What's inside (11 files)
  • assets/powertools-handler.py1.7K chars
  • references/api-gateway.md6K chars
  • references/architecture.md6.6K chars
  • references/concurrency.md5.6K chars
  • references/deployment.md3.9K chars
  • references/event-sources.md8.3K chars
  • references/lambda.md10K chars
  • references/orchestration.md6.9K chars
  • references/production.md8.4K chars
  • references/troubleshooting.md10.5K chars
  • SKILL.md8.2K chars

SKILL.md, first part. Shown as plain text.

---
name: aws-serverless
description: Builds, deploys, manages, debugs, configures, and optimizes serverless applications on AWS using Lambda, API Gateway, Step Functions, EventBridge, and SAM/CDK. Covers cold starts, CORS debugging, event source mappings, troubleshooting, concurrency, SnapStart, Powertools, function URLs, EventBridge Scheduler, Lambda layers, and production readiness. Triggers on mentions of Lambda, API Gateway, Step Functions, SAM templates, CDK serverless stacks, DynamoDB stream triggers, SQS event sources, cold starts, timeouts, 502/504 errors, throttling, concurrency, CORS, Powertools, or any event-driven architecture on AWS, even without the word "serverless." Does not apply to EC2, ECS/Fargate containers, or Amplify hosting.
metadata:
  version: "2"
---

# AWS Serverless

Domain expertise for building serverless applications on AWS: Lambda, API Gateway, Step Functions, EventBridge, event source mappings, concurrency, cold starts, deployment, and troubleshooting.

**Works best with** the [AWS MCP server](https://docs.aws.amazon.com/aws-mcp/) — run CLI commands, query CloudWatch, validate configs directly. All guidance also works with standard AWS CLI access.

## Specialized skills — check these first

These cover capabilities and procedures the general references below do **not**. Several are specialized features or step-by-step tested procedures you would otherwise miss. Route to the matching skill before falling back to the references.

### Advanced Lambda compute (easy to overlook)

| Use this skill | When the workload involves |
|---|---|
| **aws-lambda-microvms** | Strong tenant isolation, sandboxed/untrusted code execution (AI agent code sandboxes, REPLs, notebooks, CI runners), long-lived sessions, suspend/resume with preserved state, port-listening servers (gRPC, WebSocket, custom TCP), Firecracker microVMs, snapshot-resumable compute, up to 8-hour lifetimes |
| **aws-lambda-durable-functions** | Durable execution, checkpoint-and-replay, long-running multi-step workflows written as plain code (TS/Python/Java), automatic state persistence, saga pattern in code, human-in-the-loop callbacks, executions up to 1 year, `context.step`/`context.wait`/`context.invoke`, `withDurableExecution`, `durable-execution-sdk` |
| **aws-lambda-managed-instances** | Lambda Managed Instances (LMI), capacity providers, EC2-backed Lambda, steady high-volume traffic (50M+ req/mo) wanting Savings Plans / Reserved Instance pricing, `PerExecutionEnvironmentMaxConcurrency`, `CapacityProviderConfig`, multi-concurrent execution environments |

### Workflow orchestration

Route here when the user wants to coordinate multiple steps, services, or functions. Triggers include "orchestration", "workflow", "state machine", "multi-step coordination", "coordinate Lambda functions", "durable execution", "pipeline with retries", or intent to build saga/compensation, human-in-the-loop approval, fan-out, or long-running async coordination.

When starting a new orchestration or multi-step workflow, you MUST surface the choice between AWS Step Functions and AWS Lambda Durable Functions before implementing — do not silently pick one. Route on the signals below. When the request names only a generic pattern (saga/compensation, human-in-the-loop, fan-out, or "workflow orchestration") with no technology, present both options and the one-line tradeoff, then let the user decide. Do not lead with the tradeoff caveats when the signals already point to one service.

| Use this skill | When the workload involves |
|---|---|
| **aws-step-functions** | Orchestration whose primary work is calling AWS services directly; coordinating non-Lambda compute (ECS/Fargate, Glue, SageMaker, Batch) through native managed integrations; a visual, auditable workflow definition required for compliance, cross-team operational observability, or as a shared contract between teams that do not share a codebase (ASL is the specification, not application code); authoring or e

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