Loading ToolBench
Three tools with complete input schemas and descriptions, but significant gaps in output documentation and error handling guidance. Tool names follow verb_noun pattern (print_*), which is good. Descriptions are present (60-90 chars) but lack context on when to use each tool vs. alternatives, prerequisites, or what happens on failure. Parameters are well-typed with defaults, but lack enum constraints for categorical fields (img_binarization_algo, align, status, priority). No documented output schemas, LLMs cannot plan downstream calls or extract structured data. Error handling is minimal: tools catch CatMCPError but provide no recovery guidance. Device parameter accepts empty string for auto-discovery, which is good UX, but 'energy' parameter (0-65535) lacks explanation of what values mean or typical ranges.
Print an image URL/base64 encoded image data URI on a cat printer over BLE.
Render and print a Jira-style assignment ticket template.
Render and print plain text as a 384px thermal bitmap.
No output schemas documented. LLMs cannot infer what fields are returned or plan downstream tool calls. All three tools return dict but structure is undocumented.
Categorical parameters lack enum constraints. 'img_binarization_algo' accepts free-form strings (floyd-steinberg, atkinson, halftone, mean-threshold, none) but no enum defined, LLMs may hallucinate invalid values. Same for 'align' (left, center, right) and Jira ticket 'status'/'priority'.
Error handling provides no recovery guidance. _raise_tool_error() converts CatMCPError to RuntimeError with only the exception message. No indication of whether error is retryable, user-fixable, or fatal. No suggestions for next steps (e.g., 'Device not found, try auto-discovery by leaving device empty').
Inferred effective spec: <=2025-11-25.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | F | 46 | <=2025-11-25 | v2 |
Parameter descriptions lack actionable constraints. 'energy' parameter (0-65535) has no explanation of what values mean, typical ranges, or impact on output quality. 'font_size' (default 26) lacks min/max bounds. 'margin' and 'line_spacing' lack units or typical ranges.
Tool descriptions lack context on when to use each tool vs. alternatives. 'print_text' vs 'print_jira_ticket' distinction is unclear, when should an LLM choose one over the other? No mention of prerequisites (e.g., 'Requires BLE-capable device') or failure modes.