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Chisel has 19 tools with complete input schemas and descriptions, but quality is uneven. Most tools have adequate naming (verb_noun pattern) and descriptions (50-150 chars), but lack output schema documentation, error handling guidance, and parameter validation details. No tool annotations (readOnlyHint/destructiveHint). Parameter descriptions are minimal, many lack format/range constraints. Risk classification is present (READ_ONLY vs WRITE) but not surfaced to LLMs. Missing: pagination guidance, idempotency markers, recovery hints in error cases.
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No output schema documentation. Tools return results but LLMs cannot predict field names, types, or structure. Forces agents to guess downstream field names and risks broken tool chains.
Missing tool annotations. No readOnlyHint/destructiveHint/idempotentHint in schemas. LLMs cannot distinguish safe (read-only) from dangerous (WRITE) operations without explicit hints. Risk classification exists in metadata but is not exposed to LLM reasoning.
Parameter descriptions lack format/range constraints. E.g., 'limit' has no min/max; 'coverage_mode' enum is documented but not all params specify valid ranges. LLMs cannot validate inputs without explicit constraints.
| Scored | Grade | Overall | Spec posture | Rubric |
|---|---|---|---|---|
| 2026-09-23 | C | 62 | 2026-07-28+ | v2 |
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No pagination or result-limiting guidance in tool descriptions. Tools accept 'limit' but descriptions do not state default, max, or when pagination is needed. Large result sets risk context window exhaustion.
Error handling lacks recovery guidance. No indication of retryable vs fatal errors, or what the LLM should do next. E.g., if 'analyze' fails due to stale DB, should the agent call 'update' first?