Lists concrete actions ('Creates comprehensive Technical Design Documents') and specifies the approach ('mandatory and optional sections through interactive discovery'). It also clarifies what it does NOT do, adding further specificity.

Clearly answers both 'what' (creates TDDs with mandatory/optional sections through interactive discovery) and 'when' (explicit 'Use when' clause with multiple trigger phrases). Also includes a 'Do NOT use' clause for disambiguation, which is a bonus.

Excellent coverage of natural trigger terms: 'write a design doc', 'create a TDD', 'technical spec', 'architecture document', 'RFC', 'design proposal', and 'document a technical decision before implementation'. These are terms users would naturally use.

Highly distinctive with explicit boundary-setting via the 'Do NOT use for README files, API docs, or general documentation (use docs-writer instead)' clause. This directly addresses potential conflicts with similar documentation skills and provides a clear niche.

Extremely verbose at ~800+ lines. Contains massive translation tables, extensive anti-pattern examples, full template content for all 20 sections, and explanations of concepts Claude already knows (what PCI DSS is, what a webhook is, what GDPR means). The language adaptation section alone with its translation table is unnecessary padding. Most section templates could be reduced to structural outlines rather than fully fleshed-out examples with placeholder data.

Provides concrete templates and structured workflows with specific JSON for the AskQuestion tool, clear section templates with markdown examples, and validation checklists. However, much of it is template/placeholder content rather than executable guidance - the templates show what a TDD looks like but the actual generation logic relies on Claude filling in blanks. The AskQuestion JSON is actionable but the rest is more descriptive than instructive.

The 6-step interactive workflow (Initial Gathering → Validate Mandatory → Check Critical → Offer Suggested → Generate → Confluence) is clearly sequenced. However, validation checkpoints are limited to a final checklist rather than being embedded at each step. There's no explicit feedback loop for when the user provides incomplete information mid-workflow, and the validation rules at the end feel disconnected from the step-by-step process.

This is a monolithic wall of text with all 20 section templates fully inline. The content would benefit enormously from splitting section templates into a separate reference file (e.g., TEMPLATES.md) and keeping SKILL.md as an overview with the workflow, decision logic, and key principles. No external file references are used despite the document being extremely long.