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When you are asked for the current date or time, call current_datetime() and pass along an optional timezone parameter (defaults to NYC).
Single tool with acceptable naming and schema, but description quality is borderline and lacks advanced patterns. The tool 'current_datetime' follows basic verb_noun convention and has a parameter schema with type and description. However, the description lacks specificity about when to use this tool vs. alternatives (none exist here, but good practice would state this), and there is no documented output schema or error handling guidance. The tool is READ_ONLY and safe, but error messages ('Unknown timezone') are generic and could guide the LLM better. No pagination, no complex composition, no output structure documentation.
Returns the current date and time as a string. If you are asked for the current date or time, call this function.
Output schema not documented. Tool returns a formatted string, but no structured schema is declared. LLMs cannot reason about the exact format (e.g., timezone abbreviation included) without explicit documentation.
Tool description is adequate but lacks 'when to use' context. Description states what it does and parameters, but doesn't explain when to call this vs. other time sources or why it's the primary tool for date/time queries. LLMs benefit from explicit selection guidance.
Error message for invalid timezone is helpful but not recovery-guided. The error 'Unknown timezone X. Please use a valid timezone name.' does not tell the LLM what to do next, should it retry with 'UTC'? List available timezones? Current guidance leaves the agent stuck.
Inferred effective spec: <=2025-11-25.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-22 | D | 56 | <=2025-11-25 | v2 |
| 2026-03-09 | D | 50 | - | v1 |