Server has 7 tools with consistent naming (verb_noun pattern) and reasonable descriptions (avg ~100 chars). All tools have input schemas with Zod validation and type definitions. However, parameter descriptions are sparse or missing entirely, most params lack guidance on format, constraints, or when to use them. Output schemas are undocumented; LLMs cannot predict response structure. Error handling is minimal (generic 'Error: {message}' responses). No tool annotations (readOnlyHint/destructiveHint). Composition is sound (single responsibility per tool), but parameter documentation falls short of production baseline (94% of A+ tools have full param descriptions; this server ~40%).

• Add descriptions to all parameters. For 'page' and 'perPage': 'Page number (1-indexed) and items per page (1-1000). Use for pagination.' For 'id'/'articleId': 'Numeric article ID (string or number accepted).' For 'state': 'Filter articles by publication state: published, unpublished, or all.'
• Document output schemas for each tool. E.g., devto_list_articles returns {articles: [{id, title, author, tags, published_at, ...}], total_count}. Include field types and what each field means.
• Implement structured error responses with recovery hints. Instead of 'Error: 404', return {error: 'article_not_found', message: 'Article 123 not found.', recovery: 'Try searching with devto_list_articles() to find valid article IDs.', retryable: false}.
• Add tool annotations via inputSchema metadata. Mark devto_create_article and devto_update_article with destructiveHint: true. Mark all read-only tools with readOnlyHint: true.
• Add pagination guidance to devto_list_articles description: 'Returns up to 30 articles per page. Use page parameter to iterate. Total count included in response for planning.' Also document that 'top' parameter returns trending articles from last N days, mutually exclusive with pagination.