ccbookmark has 8 well-named tools with clear verb-noun patterns (save_, list_, show_, restore_, export_, delete_, bulk_delete, bulk_export). All tools have descriptions (avg ~150 chars, within baseline 34-392 range). Input schemas are visible and properly typed. However, output schemas are NOT documented, the code returns dicts but LLMs cannot see what fields to expect. Parameter descriptions are present but lack detail on constraints (e.g., no mention of session_id format, cwd path requirements, or tag format). Error handling is absent, no guidance on what to do if a session is not found or a path is invalid. Destructive tools (delete_saved, bulk_delete) lack confirmation/dry-run patterns. Overall: solid naming and basic structure, but missing output documentation and error recovery guidance.

• Document output schemas for all tools. Add a 'Returns' section to each docstring specifying field names, types, and meanings. E.g., save_conversation returns {session_id: str, title: str, cwd: str, git_branch: str | null, user_count: int, assistant_count: int, files: list[str], summary: str}.
• Add confirmation/dry-run pattern to delete_saved and bulk_delete. Implement a 'confirm' parameter (default false) or a separate 'preview_delete' tool that shows what would be deleted without executing.
• Enhance error handling. Catch exceptions in core.* calls and return structured errors with recovery guidance. E.g., 'Session not found: session_id=abc123. Call list_saved() to see available sessions.'
• Specify parameter constraints in descriptions. E.g., session_id: 'UUID format (e.g., 550e8400-e29b-41d4-a716-446655440000)', cwd: 'Absolute or relative path to project directory', tags: 'Array of strings, each 1-50 chars, alphanumeric + hyphens'.
• Add pagination to list_saved. Include offset/limit in response and document max results. Current limit=50 default is good, but return total_count and next_offset so agents can iterate large result sets.