Aws Cloudformation Auto Scaling
CloudFormation scaffolding for EC2/ECS Auto Scaling groups, policies, and lifecycle hooks
Test report
- Verdict
- Works with setup
- Score
- Tested
- Jul 31, 2026
- Environment
- Claude Code 2.x (agent harness)
- Upstream re-checked
- Aug 10, 2026 · 057d0d9
Located SKILL.md at the slug-matching path; frontmatter parses with name+description+allowed-tools (Read,Write,Bash). All three referenced files (constraints.md/examples.md/reference.md) return HTTP 200; no security smells (only standard yum UserData). Trigger phrasings tested — SHOULD load: (1) "Write a CloudFormation template for an EC2 Auto Scaling Group with CPU target-tracking behind an ALB", (2) "Add a lifecycle hook and scaling policy to my ASG CloudFormation stack", (3) "Set up scheduled scaling for my ECS service via CloudFormation"; should NOT: (4) "Write a Terraform module for an autoscaling group" (not CloudFormation), (5) "Create a plain single EC2 instance CloudFormation template, no scaling" (sibling aws-cloudformation-ec2 skill) — 5/5 correct. Output test: wrote a baseline ASG+ALB template from memory, then one following the skill's steps/complete-example strictly. The skill adds real breadth over baseline (TargetGroup + HealthCheckType ELB, HealthCheckGracePeriod, tags with PropagateAtLaunch, cross-stack Export outputs, plus validate/verify CLI workflow). BUT following it strictly reproduces two schema defects the baseline avoided: AWS::EC2::LaunchTemplate puts ImageId/InstanceType/SecurityGroupIds directly under Properties instead of inside the required LaunchTemplateData block, and it declares InstanceType with type AWS::EC2::Instance::Type which is not a valid CloudFormation parameter type — both would fail aws cloudformation validate-template. Could not run validate-template (no AWS creds), so defects verified against known CFN schema, not live. Docs marked down for calling these examples "production-ready" despite the invalid launch-template schema.
Scored on four weighted criteria — install, triggering, output vs. baseline, docs. How scoring works
- Installs cleanly 5/5
- Triggers reliably 5/5
- Output vs. baseline 5/10
- Docs & honesty 3/5
What Aws Cloudformation Auto Scaling does
Provides AWS CloudFormation YAML patterns for Auto Scaling: launch templates, Auto Scaling Groups, target-tracking and step scaling policies, lifecycle hooks, ALB integration, CloudWatch alarms, and cross-stack exports. Triggers when a user asks to write or extend CloudFormation for EC2/ECS scaling, ASG capacity, or scaling policies. Ships a constraints reference plus validate/verify AWS CLI command snippets.
How to install Aws Cloudformation Auto Scaling
git clone --depth 1 https://github.com/giuseppe-trisciuoglio/developer-kit.git /tmp/aws-cloudformation-auto-scaling-src
mkdir -p ~/.claude/skills
cp -R /tmp/aws-cloudformation-auto-scaling-src/plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-auto-scaling ~/.claude/skills/aws-cloudformation-auto-scaling
# No external deps to install the skill. To actually run its validate/verify snippets you need the AWS CLI configured with credentials.
# References ship alongside SKILL.md: references/constraints.md, examples.md, reference.md (all present, HTTP 200).
Skills live in ~/.claude/skills/ (global) or .claude/skills/
(per-project). Restart Claude Code after installing.
Commands — how to trigger Aws Cloudformation Auto Scaling
-
/aws-cloudformation-auto-scalingCloudFormation scaffolding for EC2/ECS Auto Scaling groups, policies, and lifecycle hooks
It also activates on plain-language prompts like these:
-
Write a CloudFormation template for EC2 auto scaling -
Add a scaling policy to this ECS service -
Set up predictive scaling for this Lambda function
Frequently asked questions
- Is the Aws Cloudformation Auto Scaling skill free?
- Yes. The skill itself is free from giuseppe-trisciuoglio/developer-kit. SkillProof publishes the install command and an independent test verdict at no cost.
- Does Aws Cloudformation Auto Scaling work with Claude Code?
- We tested it with Claude Code 2.x (agent harness) on Jul 31, 2026. Verdict: Works with setup. Located SKILL.md at the slug-matching path; frontmatter parses with name+description+allowed-tools (Read,Write,Bash). All three referenced files (constraints.md/examples.md/reference.md) return HTTP 200; no security smells (only standard yum UserData). Trigger phrasings tested — SHOULD load: (1) "Write a CloudFormation template for an EC2 Auto Scaling Group with CPU target-tracking behind an ALB", (2) "Add a lifecycle hook and scaling policy to my ASG CloudFormation stack", (3) "Set up scheduled scaling for my ECS service via CloudFormation"; should NOT: (4) "Write a Terraform module for an autoscaling group" (not CloudFormation), (5) "Create a plain single EC2 instance CloudFormation template, no scaling" (sibling aws-cloudformation-ec2 skill) — 5/5 correct. Output test: wrote a baseline ASG+ALB template from memory, then one following the skill's steps/complete-example strictly. The skill adds real breadth over baseline (TargetGroup + HealthCheckType ELB, HealthCheckGracePeriod, tags with PropagateAtLaunch, cross-stack Export outputs, plus validate/verify CLI workflow). BUT following it strictly reproduces two schema defects the baseline avoided: AWS::EC2::LaunchTemplate puts ImageId/InstanceType/SecurityGroupIds directly under Properties instead of inside the required LaunchTemplateData block, and it declares InstanceType with type AWS::EC2::Instance::Type which is not a valid CloudFormation parameter type — both would fail aws cloudformation validate-template. Could not run validate-template (no AWS creds), so defects verified against known CFN schema, not live. Docs marked down for calling these examples "production-ready" despite the invalid launch-template schema.
- What is the Aws Cloudformation Auto Scaling SkillProof Score?
- 7.2/10 — installs cleanly 5/5, triggers reliably 5/5, output vs. baseline 5/10, docs & honesty 3/5.
- How do I install Aws Cloudformation Auto Scaling?
- Copy the install command from this page, run it in your terminal, and restart Claude Code. Skills live in ~/.claude/skills/ (global) or .claude/skills/ inside a project.
- Can I use Aws Cloudformation Auto Scaling with Cursor, Copilot, Gemini CLI, Codex or other AI tools?
- The SKILL.md format is native to Claude (Claude Code, Desktop, claude.ai). The instructions inside adapt to other assistants: Cursor rules, GitHub Copilot instructions, Windsurf rules, Custom GPTs, AGENTS.md for OpenAI Codex, and GEMINI.md for Google Gemini CLI — our conversion guides cover each, and the free converter on the tools page does the wrapping for you.