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AWS CloudFormation IaC Assistant

A reference skill for writing CloudFormation templates, deploying stacks, detecting drift, and troubleshooting failed deployments.

Dev & CodingIntermediate★ 1,159⑂ 445AI score 8/10Last updated: Sep 28, 2026

What it does

  • Explains the canonical template layout (Parameters, Mappings, Conditions, Resources, Outputs) with a working YAML example.
  • Ships copy-paste snippets for common resources: Lambda + IAM role, VPC with public/private subnets and routing, DynamoDB table with a GSI.
  • Collects the AWS CLI surface in tables and examples: create/update/delete stack, change set workflow, termination protection.
  • Provides troubleshooting recipes for CREATE_FAILED diagnosis, DELETE_FAILED recovery, drift detection, and continuing a failed rollback.

Who it's for

  • Backend, DevOps and SRE engineers managing AWS infrastructure as code.
  • Teams standardized on CloudFormation/SAM rather than Terraform, or organizing nested stacks.
  • Anyone tired of re-reading AWS docs for intrinsic functions and CLI flags.

Usage examples

  1. "Generate an S3 + Lambda template that picks instance size per dev/prod environment" → YAML draft using Mappings and Conditions.
  2. "Preview what my-stack update will change" → guided create-change-set / describe / execute flow.
  3. "My stack is stuck in DELETE_FAILED" → query the failing resources, then retry delete with --retain-resources.

· · · Install guide · · ·

Try it now, no install

Paste this into Claude to use the skill without installing anything.

Read the instructions in this file and follow them to help me:
https://raw.githubusercontent.com/itsmostafa/aws-agent-skills/HEAD/skills/cloudformation/SKILL.md

What I want: (describe your task here)

If Claude can't open the link, open it yourself and paste the contents instead.

↓ If it works for you, download the ZIP below and install it. Then it runs on its own — no pasting each time.

Install in the Claude app (no terminal)
  1. Download the ZIP with the button below.
  2. In Claude, open Settings → Capabilities and turn on 'Code execution and file creation'. (one time)
  3. Go to Customize → Skills → + → 'Upload a skill' and upload the ZIP.
↓ Download ZIP
Install in Claude Code

Let Claude do it — paste this into Claude Code

Install the skill I found on Claude Skill Mart.
Copy the skills/cloudformation folder from the GitHub repo itsmostafa/aws-agent-skills into my ~/.claude/skills/cloudformation/.
When it's done, tell me in one line what this skill can do.

Install with a command instead

git clone https://github.com/itsmostafa/aws-agent-skills.git && mkdir -p ~/.claude/skills && cp -r aws-agent-skills/skills/cloudformation ~/.claude/skills/

⚠ This is a third-party skill. Check the source repository before installing.

  1. Open a terminal and verify the AWS CLI with aws --version; install it and run aws configure if needed.
  2. Create the skills directory: mkdir -p ~/.claude/skills
  3. Clone the repository: git clone https://github.com/itsmostafa/aws-agent-skills.git
  4. Copy just this skill: cp -r aws-agent-skills/skills/cloudformation ~/.claude/skills/
  5. Restart Claude Code and ask something like "write a CloudFormation template for a VPC" to confirm the skill loads.
  6. Before running mutating commands (delete-stack, update-stack), double-check the target AWS account and stack name yourself.
View source on GitHub ↗License: MIT