Loading ToolBench
Three read-only S3 tools with basic descriptions and schemas. Tool names follow verb_noun pattern (list-buckets, list-objects, get-object) and are action-clear. Descriptions exist but are minimal (10-34 chars, below the 50-200 char LLM-optimized baseline). Parameters have types and descriptions, but lack constraints (enums, ranges, patterns). No output schemas documented. Error handling not visible in provided code. No tool annotations (readOnlyHint, idempotentHint). Composition is sound, each tool does one thing. Missing pagination guidance for list-objects despite potential for large result sets.
Retrieve an object from an S3 bucket
List available S3 buckets
List objects in an S3 bucket
Descriptions are too brief (10-34 chars). LLM-optimized descriptions should be 50-200 chars, explaining WHAT the tool does, WHEN to use it, and any prerequisites. Current descriptions lack context for tool selection.
No output schemas documented. LLMs need to know what fields to expect (bucket names, object keys, metadata, content type, size, etc.) to plan downstream calls and extract data correctly.
list-objects lacks pagination guidance. No maxKeys default, no next_cursor or continuation token documented. Large buckets could return thousands of objects, exhausting context window.
No tool annotations (readOnlyHint, idempotentHint). All three tools are read-only and idempotent, marking them as such helps agents optimize retry logic and understand safety.
Inferred effective spec: <=2025-11-25.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | C | 64 | <=2025-11-25 | v2 |
Parameters lack constraints. 'prefix' and 'maxKeys' in list-objects have no enum, range, or pattern. 'bucket' and 'key' accept free-form strings with no validation hints. Constraints should be explicit in descriptions or schemas.