Single tool 'add_usecase' has a clear action verb and basic schema, but suffers from significant issues: (1) description is vague about what 'optional forecasting configuration' means and when to use this tool vs alternatives; (2) parameter descriptions lack detail about expected structure, constraints, and format; (3) no documented output schema, callers don't know what fields to expect; (4) parameter 'usecase_info' accepts an untyped dict with no enum or constraint guidance, inviting hallucinated keys; (5) no error handling guidance or recovery hints. The tool is minimally functional but fails to meet LLM-optimization standards (description should be 10-200 chars and explain WHAT, WHEN, and WHY; parameters need types and constraints). Tool name is acceptable (verb_noun pattern), but overall definition quality is weak.

• Rewrite parameter 'usecase_info' as a structured object with named fields (e.g., name: string, description: string, type: enum, config: {...}). Document each field's type, constraints, and whether it is required. Example: 'usecase_info: {name: "string (1-256 chars)", description: "string (optional)", type: enum("forecasting", "classification", ...), ...}'
• Add an explicit output schema to the tool description: 'Returns {usecase_id: string, status: string, created_at: ISO8601, message: string}' or equivalent. This tells LLMs what fields to expect and enables chaining.
• Expand tool description to 50-150 characters and include WHEN guidance. Example: 'Create a new forecasting or classification usecase in ModelManager. Use this when you need a fresh usecase with template-based configuration; use update_usecase to modify an existing one.'
• For forecasting_fields and forecasting_feature_tabs parameters, document the expected nested structure with examples of required/optional keys. If these are optional, explicitly state the consequence of omitting them (e.g., 'If omitted, usecase uses default forecasting settings').
• Add error handling examples in the tool description: 'If name is duplicate, returns 409 Conflict. If forecasting config is invalid, returns 400 Bad Request with details on required fields. Try calling get_usecase_templates() to see valid configurations.'
• Rename tool from 'add_usecase' to 'create_usecase' for clarity, 'add' could imply appending to a list, while 'create' clearly means instantiating a new resource.