skills-mcp demonstrates solid definition quality with well-structured tools, clear naming conventions, and comprehensive parameter descriptions. All 7 tools follow verb_noun naming patterns (search_skills, get_skill, list_domains, list_repos, recommend_skills, install_skill, catalog_stats). Descriptions are generally informative and action-oriented, ranging 100-250 characters. Input schemas are visible and properly typed using Zod validation. However, output schemas are not explicitly documented in the source, and some parameter descriptions could be more prescriptive about constraints. The install_skill tool handles a sensitive write operation (downloading and writing to filesystem) but lacks confirmation/dry-run patterns. Error handling is present but recovery guidance is minimal.

• Document output schemas formally for all 7 tools. For search_skills: return array of {id: string, name: string, description: string, tags: string[], source: string, repo: string}. For install_skill: return {success: boolean, path: string, slug: string, warnings?: string[]}. Make response shapes machine-parseable.
• Add explicit confirmation step to install_skill: require a 'confirm=true' parameter or support a dry_run mode first. This prevents accidental overwrites and aligns with pattern:confirmation-request.
• Enhance error recovery guidance in descriptions. E.g., install_skill: 'If GitHub API rate limit is hit, set GITHUB_TOKEN env var (see https://docs.github.com/...). If target directory is inaccessible, ensure write permissions or choose a different target_dir.'
• Add parameter constraints as machine-readable schema. search_skills 'query': minLength 1, maxLength 500; recommend_skills 'task': minLength 10, maxLength 2000. Add enum values for install_skill 'ide' parameter (currently present but add description of each option).
• Implement and document path sanitization for install_skill 'target_dir'. Add description: 'Must be an absolute path and must not traverse outside your IDE skills directory. Paths like ../../../etc/passwd will be rejected.' Validate server-side and return clear error if traversal detected.
• Add success/failure structure to install_skill response. If partial failure occurs (e.g., folder downloaded but write fails), return {success: false, partial: {downloaded: true, written: false}, error: '...', recovery: 'Check disk space and permissions'}.