The server defines 11 tools with schemas and descriptions present, but quality is inconsistent. Most tools have clear verb-noun naming and basic descriptions, but several critical gaps prevent a higher score: (1) Tool descriptions vary widely in quality, some are minimal (e.g., 'Deleta um post existente pelo ID.' is Portuguese and only 30 chars, violating the 50-200 char baseline); (2) Parameter descriptions are sparse or missing context (e.g., 'ID do post' provides minimal guidance on format or constraints); (3) Output schemas are not documented, tools return text/JSON responses but their structure is not formally declared; (4) No error handling guidance, error messages are generic ('Error deleting note: ...') without recovery hints; (5) Three tools have descriptions in Portuguese, making them inaccessible to English-speaking LLMs; (6) Parameter descriptions lack actionable constraints, enums are present (status, type) but most string parameters have no format/length guidance; (7) Missing security patterns, no audit trails, permission gates, or secret injection guidance visible in tool implementations.

• Translate all Portuguese descriptions to English and ensure all descriptions are 50-200 characters with clear actionable guidance. E.g., 'delete_post' → 'Permanently deletes a post by ID. Cannot be undone. Verify post exists with list_posts first.'
• Document output schemas for every tool. E.g., list_notes returns {content: [{type: 'text', text: string}]}; save_note returns {content: [{type: 'text', text: string}], note_id?: string}. Use JSON Schema in comments or inline type annotations.
• Add error recovery guidance to all error returns. E.g., 'Note not found: ID "xyz" does not exist. Call list_notes() to find valid note IDs.' or 'Validation error: title must be 1-200 chars (got 250 chars). Shorten and retry.'
• Implement confirmation for destructive operations. Add a separate preview_note or dry_delete_note step before delete_note. Alternatively, require a confirmation_token parameter returned by a prior call.
• Add explicit constraints to string parameters: describe min/max length, allowed characters, format patterns. E.g., 'title: 1-200 chars, no special characters', 'content: max 5000 chars'.
• Add pagination to list_notes and list_posts: accept limit (default 20, max 100), offset/cursor parameters; return total_count and next_cursor in response. Limit results to prevent context overflow.
• Add authorization checks. Verify the calling user/agent has permission to read/write/delete notes/posts before executing. Return 403 Forbidden with clear error if not authorized.
• Declare idempotency for write operations. E.g., 'save_note with same title+content will return the same note_id on retry (idempotent)' or 'Multiple calls with same params create duplicate posts (non-idempotent); use update_note to avoid duplication.'