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Single tool 'add' has a valid schema with typed parameters (integers) but critical gaps in descriptions. Tool description is present (10 chars minimum met) but parameter descriptions are null/missing entirely. No output schema documented. No error handling guidance. Naming is acceptable (verb_noun pattern) but the tool is trivial and lacks production-grade polish.
Add two numbers
Missing parameter descriptions: 'a' and 'b' have null descriptions. Rubric requires every parameter to have a non-empty description explaining what it controls.
No output schema documented. Tool returns an integer but LLMs cannot infer the return type or structure without explicit documentation.
No error handling or recovery guidance. Tool lacks documentation of failure modes, validation rules, or actionable error messages.
Tool description is minimal (10 chars: 'Add two numbers'). Rubric baseline for A+ tools is 194 chars average; this lacks context for when/why to use it vs alternatives.
No parameter constraints (min/max for integers). Unbounded numeric parameters let LLMs pass absurd values; should specify valid ranges.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | D | 57 | 2026-07-28+ | v2 |