aws-cloudformation-elasticache
AWS CloudFormation patterns for Amazon ElastiCache. Use when creating ElastiCache clusters (Redis, Memcached), replication groups, parameter groups, subnet groups, and implementing template structure with Parameters, Outputs, Mappings, Conditions, and cross-stack references for distributed caching infrastructure.
Install with Tessl CLI
npx tessl i github:giuseppe-trisciuoglio/developer-kit --skill aws-cloudformation-elasticache79
Does it follow best practices?
If you maintain this skill, you can automatically optimize it using the tessl CLI to improve its score:
npx tessl skill review --optimize ./path/to/skillValidation for skill structure
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a well-crafted skill description that excels across all dimensions. It provides specific concrete actions, includes comprehensive trigger terms that users would naturally use when working with AWS ElastiCache, explicitly states both what the skill does and when to use it, and carves out a distinct niche that minimizes conflict with other skills.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'creating ElastiCache clusters (Redis, Memcached), replication groups, parameter groups, subnet groups' and details template components like 'Parameters, Outputs, Mappings, Conditions, and cross-stack references'. | 3 / 3 |
Completeness | Clearly answers both what (CloudFormation patterns for ElastiCache with specific resource types and template structures) and when ('Use when creating ElastiCache clusters...') with explicit trigger guidance. | 3 / 3 |
Trigger Term Quality | Excellent coverage of natural terms users would say: 'AWS CloudFormation', 'ElastiCache', 'Redis', 'Memcached', 'replication groups', 'parameter groups', 'subnet groups', 'distributed caching infrastructure' - all terms a user working with AWS caching would naturally use. | 3 / 3 |
Distinctiveness Conflict Risk | Highly distinctive with clear niche: specifically targets AWS CloudFormation + ElastiCache combination. The specific mention of Redis, Memcached, and ElastiCache-specific resources (replication groups, subnet groups) makes it unlikely to conflict with general CloudFormation or other caching skills. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
64%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill provides highly actionable, production-ready CloudFormation templates for ElastiCache with excellent code examples. However, it suffers from verbosity—explaining CloudFormation basics Claude already knows and including too much inline content that should be in referenced files. The workflow for actually deploying and validating stacks lacks explicit checkpoints and error recovery guidance.
Suggestions
Remove or drastically reduce the 'Template Structure' section explaining basic CloudFormation concepts (AWSTemplateFormatVersion, Description, Metadata, Resources) that Claude already understands
Move detailed examples (parameter types, mappings, conditions, security patterns) to REFERENCE.md and keep only 2-3 essential patterns in the main skill
Add an explicit deployment workflow section with numbered steps: 1) Validate template, 2) Create change set, 3) Review changes, 4) Execute, 5) Verify outputs—with error handling at each step
Consolidate repetitive examples (e.g., multiple similar replication group configurations) into a single parameterized example with comments explaining variations
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill is comprehensive but overly verbose for Claude's capabilities. It includes extensive explanations of CloudFormation sections (AWSTemplateFormatVersion, Description, Metadata) that Claude already knows, and repeats similar patterns multiple times (e.g., multiple parameter group examples, multiple replication group examples). | 2 / 3 |
Actionability | Excellent actionability with fully executable YAML templates throughout. Every example is copy-paste ready with complete resource definitions, proper syntax, and realistic configurations. CLI commands for validation and drift detection are also provided. | 3 / 3 |
Workflow Clarity | While the skill provides good examples, it lacks explicit validation checkpoints and feedback loops for the deployment process. The 'Validate Before Deployment' section is brief and doesn't integrate validation into a clear workflow sequence with error recovery steps. | 2 / 3 |
Progressive Disclosure | The skill references EXAMPLES.md and REFERENCE.md at the end, but the main document is a monolithic wall of content (~800+ lines). Much of the detailed content (parameter types, mappings examples, security patterns) could be split into separate files with the main skill providing a concise overview. | 2 / 3 |
Total | 9 / 12 Passed |
Validation
62%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 10 / 16 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
skill_md_line_count | SKILL.md is long (1237 lines); consider splitting into references/ and linking | Warning |
allowed_tools_field | 'allowed-tools' contains unusual tool name(s) | Warning |
metadata_version | 'metadata' field is not a dictionary | Warning |
license_field | 'license' field is missing | Warning |
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
body_steps | No step-by-step structure detected (no ordered list); consider adding a simple workflow | Warning |
Total | 10 / 16 Passed | |
- Reviewed
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