c4-architecture-c4-architecture
Generate comprehensive C4 architecture documentation for an existing repository/codebase using a bottom-up analysis approach.
49
37%
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 ./.agent/skills/c4-architecture-c4-architecture/SKILL.mdQuality
Discovery
32%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
The description identifies a specific methodology (C4) and approach (bottom-up analysis) which provides some clarity, but it lacks explicit trigger guidance and comprehensive action verbs. The absence of a 'Use when...' clause significantly weakens its utility for skill selection among many options.
Suggestions
Add a 'Use when...' clause with trigger terms like 'C4 diagrams', 'architecture documentation', 'document codebase structure', 'system context diagram', 'container diagram'
List specific concrete actions such as 'analyze code structure, generate context diagrams, create container and component views, produce deployment diagrams'
Include file type triggers like '.md architecture files' or mention output formats to help distinguish from other documentation skills
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Names the domain (C4 architecture documentation) and mentions a specific approach (bottom-up analysis), but doesn't list concrete actions like 'create context diagrams, generate container views, map component relationships'. | 2 / 3 |
Completeness | Describes what it does (generate C4 documentation) but completely lacks a 'Use when...' clause or any explicit trigger guidance for when Claude should select this skill. | 1 / 3 |
Trigger Term Quality | Includes some relevant terms like 'C4', 'architecture documentation', 'codebase', and 'repository', but misses common variations users might say like 'system diagrams', 'architecture diagrams', 'code structure', or 'document my code'. | 2 / 3 |
Distinctiveness Conflict Risk | The C4 methodology reference provides some distinctiveness from generic documentation skills, but 'architecture documentation' could overlap with other documentation or diagramming skills without clearer boundaries. | 2 / 3 |
Total | 7 / 12 Passed |
Implementation
42%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This skill functions primarily as a table of contents rather than actionable documentation. While it has good progressive disclosure structure with clear links to sub-skills, the main file lacks any concrete guidance, examples, or validation steps. The extended thinking block and generic 'when to use' sections add unnecessary verbosity without providing value.
Suggestions
Add a concrete quick-start example showing the basic command or first step to initiate the workflow
Include a brief summary of what each sub-skill produces (e.g., '1.1 outputs a list of directories to process') so Claude understands the workflow without opening every sub-skill
Add validation checkpoints between phases (e.g., 'Verify all code-level docs exist before proceeding to Component phase')
Remove or condense the extended thinking block and generic 'Use this skill when' sections to improve token efficiency
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The extended thinking block adds unnecessary verbosity explaining what the workflow does. The 'Use this skill when' and 'Do not use this skill when' sections are generic boilerplate that don't add value. However, the core content is reasonably efficient. | 2 / 3 |
Actionability | The skill provides no concrete, executable guidance - it's entirely abstract descriptions and links to sub-skills. There are no code examples, commands, or specific instructions that Claude could execute directly. | 1 / 3 |
Workflow Clarity | The four phases are listed with clear sequence (Code → Component → Container → Context), but there are no validation checkpoints, no feedback loops for error recovery, and the actual steps are delegated entirely to sub-skills without summarizing what each involves. | 2 / 3 |
Progressive Disclosure | The skill appropriately structures content with a clear overview and well-signaled one-level-deep references to 9 sub-skills. Navigation is clear with numbered sections linking to specific sub-skill files. | 3 / 3 |
Total | 8 / 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 |
|---|---|---|
frontmatter_unknown_keys | Unknown frontmatter key(s) found; consider removing or moving to metadata | Warning |
Total | 10 / 11 Passed | |
- Repository
- Dokhacgiakhoa/antigravity-ide
- Commit
332e58b
- Reviewed
Table of Contents
Is this your skill?
If you maintain this skill, you can claim it as your own. Once claimed, you can manage eval scenarios, bundle related skills, attach documentation or rules, and ensure cross-agent compatibility.