Server has 22 tools with consistent naming (verb_noun pattern) and complete input schemas. Descriptions are present but generic (avg ~40 chars, well below the 194-char baseline). Parameters lack depth: most descriptions are single-clause statements without format guidance, constraints, or dependency hints. No output schemas documented. Error handling is absent from visible code. Security: credentials (TRELLO_API_KEY, TRELLO_TOKEN) are injected server-side (good), but no per-tool permission gates or audit logging visible. Composition is sound, tools are single-responsibility and chainable (e.g., get_board → get_lists → get_cards). Major gaps: descriptions too terse, no pagination guidance, no error recovery hints.

• Expand tool descriptions to 100 - 200 chars. Include WHEN to use (vs similar tools), WHAT it returns, and any prerequisites. E.g., 'Retrieves a specific board by ID. Returns board metadata (name, description, URL, member count). Use get_boards() first if you only have a board name.'
• Document output schemas for all tools. Specify which fields are returned and their types. E.g., get_board returns {id, name, desc, closed, url, idOrganization, memberCount}.
• Add pagination to list-returning tools: get_boards(limit=20, offset=0), get_lists(board_id, limit=20, offset=0), get_cards(list_id, limit=20, offset=0). Return total_count and next_offset.
• Add error handling with actionable recovery hints. E.g., 'Board not found. Try get_boards() to see available boards.' Categorize errors as retryable (rate limit, timeout) vs user-fixable (invalid ID, permission denied).
• Add confirmation step for destructive operations. E.g., delete_card(card_id, confirm=false) returns a confirmation token; confirm=true with token executes the delete. Prevents accidental data loss.

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry