The server has 3 tools with strong descriptions (all 150+ chars), clear naming with action verbs (search_, read_, summarize_), and documented input parameters. However, critical gaps undermine overall quality: (1) Output schemas are NOT documented anywhere, the code shows tool_query projections but no explicit return schema documentation for the LLM; (2) Parameter descriptions exist but lack format/constraint details (e.g., regex pattern syntax hints are vague, no mention of case sensitivity behavior, no guidance on common search patterns); (3) No error handling guidance, tools silently fail on invalid regex or missing stories without recovery hints; (4) Missing tool annotations (readOnlyHint, idempotentHint) despite all tools being read-only; (5) No pagination support documented despite result_limit hints in code; (6) Composition is good (tools chain well: search → read → summarize), but missing per-item result limits and next_cursor guidance. The server reads clearly at intermediate quality, strong fundamentals but incomplete production details.

• Add explicit output schema documentation for each tool. For search_stories: return {id: int, title: string, author: string, published_at: iso8601, score: int, comment_count: int, url: string, match_rank: int}. For read_story: return {story_id: int, type: 'story'|'comment', depth: int, path: string, author: string, text: string, published_at: iso8601}. For summarize_story: return {summary: string, key_points: [string], themes: [string], sentiment: 'positive'|'neutral'|'negative'}.
• Document regex pattern syntax in search_stories parameter description. Add: 'Python regex (re module). Case-sensitive by default unless (?i) flag used. Examples: (?i)python (case-insensitive), \b(AI|ML)\b (whole words only), \S+@\S+ (email pattern).'
• Add error handling guidance to each tool description. E.g., search_stories: 'Returns empty array if pattern is invalid regex or no matches found. Limit of 5000 matched comments applied internally; if exceeded, results may be incomplete.' read_story: 'Returns 404 error if story_id not found. Comment thread capped at 2000 items; if story has more comments, call with offset parameter to paginate (future version).'
• Implement and expose pagination parameters: add offset/limit or cursor-based pagination to search_stories and read_story. Return total_count or next_cursor in responses so agents can discover more results if needed.
• Add tool annotations when registering tools. In fenic code, set readOnlyHint=true for all three tools (they never modify state). This flags them as safe for retry and automatic composition.