This Scrapbox MCP server has well-structured tool definitions with proper naming conventions and clear descriptions. All 9 tools use action verbs (list_, get_, search_, create_, update_, insert_, delete_) following agentic patterns. Most parameter descriptions are present and constraints are defined (enums for sort, min/max for limits). However, several issues limit the score: (1) output schemas are not documented, the source shows input schemas via Zod but no output types are visible, (2) descriptions vary widely in quality and detail, (3) no visible error handling guidance or recovery paths, (4) no pagination documentation for list_pages despite accepting limit/skip parameters. Tools are properly registered in src/definitions/tools/index.ts with Zod-based input validation, which is solid. The codebase structure is clean and follows MCP SDK patterns.

• Document output schemas for all tools. Add JSDoc or inline comments describing the return structure. Example: 'Returns {pages: [{title, created, updated, lines}], total: number, hasMore: boolean}'.
• Add pagination guidance to list_pages description: 'Returns up to `limit` pages. To fetch all pages, check `total` and call again with `skip: offset + limit`. Maximum 1000 results per call.'
• Clarify the distinction between get_links and get_backlinks in their descriptions. Example: 'Returns links this page points TO (get_links) vs links pointing TO this page (get_backlinks).'
• Add error guidance to tool descriptions. For example, get_page: 'If page not found, returns error 404. Try search_pages() to find similar titles.'
• In insert_lines description, clarify the difference: 'lines as string inserts one line; lines as array inserts multiple lines in order starting at position.'
• Rewrite delete_page description to focus on user impact, not config: 'Permanently deletes the page. This cannot be undone. Requires SCRAPBOX_ENABLE_DELETE=true (server-side setting).'
• Add structured error responses with error codes and recovery hints. Example: {error: 'PAGE_NOT_FOUND', message: 'Page "xyz" not found', suggestion: 'Try search_pages() for similar titles'}.
• Document idempotency: Are create_page, update_page, and insert_lines idempotent if called twice? State this explicitly.
• Add constraints to title parameter (min/max length, allowed characters) based on Scrapbox's rules.