The server has 26 tools with schemas and descriptions visible in the source code. All tools are explicitly registered using FastMCP decorators. However, there are significant quality gaps: (1) Descriptions are often too brief (many under 50 chars) and lack guidance on when to use each tool vs alternatives; (2) Output schemas are not documented, we can see parameter inputs but no schema for what each tool returns, forcing LLMs to guess; (3) Parameters lack detailed constraints (e.g., status_id values 1-5 are documented inline but not as enums); (4) No error handling guidance, tools return Dict/List but don't explain failure modes or recovery paths; (5) Destructive operations (delete_project, delete_case, delete_run, delete_dataset) have no confirmation/dry-run pattern documented; (6) Parameter descriptions are inconsistent in detail, some are precise, others generic. The tools cover the TestRail domain comprehensively but execution quality is average.

• Add a documentation comment for each tool stating the return type and key fields. Example: 'Returns: {id: int, name: str, project_key: str, is_completed: bool, created_on: str (ISO 8601), ...}' at the end of the docstring.
• Convert status_id parameter in add_result to an enum with allowed values (1=passed, 2=blocked, 3=untested, 4=retest, 5=failed) instead of describing them in text.
• Extend tool descriptions to 50-150 characters and answer: What does it return? When is it used vs similar tools? Example for get_projects: 'Fetch all test projects in the workspace. Returns list of projects with id, name, key. Use before get_cases to discover project_id.'
• Add error guidance to destructive operations (delete_*). Example: 'Deletes the project permanently. Cannot be undone. Consider calling get_project first to confirm the ID.'
• Add pagination parameters (page, limit) and response fields (total_count, next_page) to list operations (get_projects, get_cases, get_runs, get_results_for_run, get_datasets).
• Implement a confirmation pattern for delete_project, delete_case, delete_run, delete_dataset: require a 'confirm=true' parameter with documentation: 'Pass confirm=true after verifying the ID to prevent accidental deletion.'
• Document what happens when optional parameters are omitted. Example in add_run: 'If suite_id is omitted, uses the default suite for the project. Required in single-suite-mode projects.'
• Add a 'dry_run' parameter to destructive operations that returns 'Would delete X' without side effects, allowing LLMs to validate intent before committing.