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aws-cloudformation-auto-scaling

Provides AWS CloudFormation patterns for Auto Scaling including EC2, ECS, and Lambda. Use when creating Auto Scaling groups, launch configurations, launch templates, scaling policies, lifecycle hooks, and predictive scaling. Covers template structure with Parameters, Outputs, Mappings, Conditions, cross-stack references, and best practices for high availability and cost optimization.

59

Quality

74%

Does it follow best practices?

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SecuritybySnyk

Passed

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Fix and improve this skill with Tessl

tessl review fix ./plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-auto-scaling/SKILL.md

The canonical home for this skill is giuseppe-trisciuoglio/developer-kit

SKILL.md
Quality
Evals
Security

Quality

Content

46%Weight 40%Scale 1-5

Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.

Highly actionable content dragged down by severe verbosity and poor progressive disclosure: the body duplicates material already present in the reference files instead of acting as a lean overview. The creation workflow also lacks validation checkpoints.

Suggestions

Move the bulk of the inline YAML templates into references/examples.md and reference.md, keeping SKILL.md a concise overview that links out to them — this directly addresses both conciseness and progressive disclosure.

Remove the redundant final Examples section (lines 1333–1390), which re-duplicates the ASG/ALB, target tracking, and lifecycle-hook patterns already shown earlier, and fix the duplicate 'Additional Files' header.

Add an explicit validation checkpoint to the Instructions workflow (e.g., 'Validate template: aws cloudformation validate-template', then 'Create a change set and review it before executing') to satisfy the destructive/batch feedback-loop requirement.

DimensionReasoningScore

Conciseness

The 1440-line body is noticeably verbose: ~15 large YAML templates with substantial redundancy (the final Examples section re-duplicates ASG/ALB, target tracking, and lifecycle-hook patterns already shown, and the 'Additional Files' header appears twice).

2 / 5

Actionability

Provides concrete, largely copy-paste-ready YAML templates and AWS CLI commands covering common cases, with minor gaps where snippets reference undeclared resources (SubnetIds, VPCId, MyAutoScalingGroup).

4 / 5

Workflow Clarity

The 8-step Instructions list is sequenced but has no validation checkpoints; because CloudFormation stack operations are destructive/batch, the missing validate→fix→retry loop caps this dimension at 3 per the rubric.

3 / 5

Progressive Disclosure

Reference files (examples.md, reference.md) exist and are linked, yet the body inlines an enormous volume of template content that belongs in those files, leaving the overview far from lean.

2 / 5

Total

11

/

20

Passed

Description

92%Weight 40%Scale 1-5

Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.

A strong, well-scoped description that clearly states capabilities and usage triggers with concrete, natural keywords. Minor improvement possible by adding synonyms (ASG) and file extensions.

DimensionReasoningScore

Specificity

Lists multiple concrete actions — Auto Scaling groups, launch configurations, launch templates, scaling policies, lifecycle hooks, predictive scaling, plus Parameters/Outputs/Mappings/Conditions/cross-stack references — giving comprehensive coverage.

5 / 5

Completeness

Explicitly answers both what ('Provides AWS CloudFormation patterns for Auto Scaling…') and when ('Use when creating Auto Scaling groups…') with concrete trigger phrases.

5 / 5

Trigger Term Quality

Strong natural terms a user would say ('Auto Scaling groups', 'launch templates', 'scaling policies', 'lifecycle hooks'), but lacks common synonyms (ASG) and file extensions (.yaml).

4 / 5

Distinctiveness Conflict Risk

Occupies a clear niche — AWS CloudFormation Auto Scaling for EC2/ECS/Lambda — with distinct triggers and minimal overlap risk with other skills.

5 / 5

Total

19

/

20

Passed

Validation

87%

Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.

Validation — 14 / 16 Passed

Validation for skill structure

CriteriaDescriptionResult

skill_md_line_count

SKILL.md is long (1441 lines); consider splitting into references/ and linking

Warning

allowed_tools_field

'allowed-tools' contains unusual tool name(s)

Warning

Total

14

/

16

Passed

Repository

fernandezbaptiste/developer-kit

Path

plugins/developer-kit-aws/skills/aws-cloudformation/aws-cloudformation-auto-scaling/SKILL.md

Reviewed

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