Expert C4 Container-level documentation specialist. Synthesizes Component-level documentation into Container-level architecture, mapping components to deployment units, documenting container interfaces as APIs, and creating container diagrams. Use when synthesizing components into deployment containers and documenting system deployment architecture.
64
Quality
61%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Passed
No known issues
Optimize this skill with Tessl
npx tessl skill review --optimize ./docs/v19.7/configuration/agent/skills_external/antigravity-awesome-skills-main/skills/c4-container/SKILL.mdQuality
Discovery
85%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-structured skill description with strong specificity and completeness, clearly defining both capabilities and usage triggers. The main weakness is the heavy reliance on technical C4 modeling jargon, which may not match how users naturally request this type of work. Users might say 'document my system architecture' rather than 'synthesize components into deployment containers'.
Suggestions
Add natural language trigger terms users might actually say, such as 'architecture documentation', 'system design docs', 'deployment diagrams', or 'how services connect'
Include file type or artifact mentions if applicable (e.g., 'PlantUML', 'Mermaid diagrams', '.puml files') to improve trigger matching
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'Synthesizes Component-level documentation into Container-level architecture', 'mapping components to deployment units', 'documenting container interfaces as APIs', and 'creating container diagrams'. | 3 / 3 |
Completeness | Clearly answers both what (synthesizes component docs into container architecture, maps components, documents interfaces, creates diagrams) and when ('Use when synthesizing components into deployment containers and documenting system deployment architecture'). | 3 / 3 |
Trigger Term Quality | Includes domain-specific terms like 'C4', 'Container-level', 'Component-level', 'deployment units', 'APIs', and 'container diagrams', but these are technical jargon. Missing natural user phrases like 'architecture docs', 'system design', or 'deployment documentation'. | 2 / 3 |
Distinctiveness Conflict Risk | Very specific niche targeting C4 Container-level documentation specifically, with clear distinction from Component-level or Context-level C4 work. The explicit C4 model reference and Container-level focus make it unlikely to conflict with other documentation skills. | 3 / 3 |
Total | 11 / 12 Passed |
Implementation
37%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill provides useful templates for C4 Container documentation but lacks actionable workflow guidance. It tells Claude what the output should look like without explaining how to synthesize components into containers. The templates are helpful but placeholder-heavy, and there's no validation process for ensuring documentation accuracy.
Suggestions
Add a concrete step-by-step workflow for synthesizing components into containers (e.g., '1. Identify deployment boundaries from K8s manifests, 2. Group components by container, 3. Document interfaces...')
Include validation checkpoints such as 'Verify all components are mapped to exactly one container' or 'Confirm API specs match actual endpoints'
Replace placeholder templates with at least one fully worked example showing a real component-to-container synthesis
Remove generic 'Use this skill when' boilerplate that doesn't add value for Claude
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The skill contains useful templates but includes some unnecessary explanation (e.g., 'Use this skill when' sections that are generic). The templates themselves are reasonably efficient but could be tighter. | 2 / 3 |
Actionability | Provides templates and examples but they are placeholder-heavy rather than executable. The Mermaid diagram and OpenAPI spec are good starting points but require significant customization. Missing concrete step-by-step instructions for actually synthesizing components into containers. | 2 / 3 |
Workflow Clarity | No clear workflow sequence for the synthesis process. The skill describes what outputs should look like but doesn't explain how to get there. Missing validation steps for verifying container documentation accuracy or completeness. | 1 / 3 |
Progressive Disclosure | References 'resources/implementation-playbook.md' for detailed examples, which is good. However, the main content is somewhat monolithic with templates that could be split into separate reference files. The structure is present but not optimally organized. | 2 / 3 |
Total | 7 / 12 Passed |
Validation
90%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 / 11 Passed
Validation for skill structure
| Criteria | Description | Result |
|---|---|---|
metadata_version | 'metadata.version' is missing | Warning |
Total | 10 / 11 Passed | |
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