Four tools with clear verb-noun naming (list_*, search_*, get_*, all action-oriented). Descriptions are present and substantive (100-200 chars), explaining WHAT and WHEN. Input schemas use Zod with proper types, min/max constraints, and descriptions. However, output schemas are undocumented, LLMs cannot predict response structure. Error handling is minimal: get_article returns isError flag but lacks recovery guidance. No parameter examples in descriptions (good), but no enum constraints where applicable (e.g., category filter). Missing tool annotations (readOnlyHint, idempotentHint) despite all tools being read-only. Overall solid foundation with gaps in output documentation and error guidance.

• Document output schemas for all tools. Add a comment or JSDoc block showing the structure returned by each tool, e.g., 'Returns: { articles: [{ slug, title, summary, category, publishedAt, url }] }'. This enables LLMs to plan field extraction.
• Add recovery guidance to error responses. When get_article returns 404, suggest: 'Article not found. Try search_articles(query="...") to find articles by keyword, or list_articles() to browse recent content.'
• Add tool annotations. Register tools with readOnlyHint: true and idempotentHint: true to signal safety. Example: server.registerTool('list_articles', { ..., readOnlyHint: true, idempotentHint: true }, handler).
• Constrain the category parameter. Replace the optional string with an enum: z.enum(['ki-pentesting', 'coding-mit-ki', 'business-mit-ki', 'ki-einstieg', 'ki-modelle', 'crypto-mit-ki', 'content-mit-ki', 'lead-generation']).optional(). This prevents hallucinated categories.
• Clarify list_pillars behavior. Update description to: 'List the 8 fixed content pillars of the FlowKI Club blog. No parameters, always returns the same set.' This prevents agents from assuming filtering options.