AURA exposes 3 tools with minimal schema documentation. All tools have basic descriptions (10-60 chars), but parameter schemas are severely underdeveloped. Input schemas show only parameter names and types with minimal descriptions. No output schemas are documented. Tools lack error handling guidance, recovery hints, and composition metadata. The benchmark file shows tool definitions but they are inferred from wrapper calls, not explicit MCP registration. No tool annotations (readOnlyHint, destructiveHint, idempotentHint) present. Naming is adequate (verb_noun pattern), but descriptions are too terse to guide LLM selection effectively.

• Add comprehensive output schemas for each tool. Document return types, field names, and structure. E.g., read_file returns {content: string, size: number, encoding: string}.
• Expand parameter descriptions to 50-150 chars each. Include format hints, constraints, and examples. E.g., 'coin: cryptocurrency symbol (3-5 uppercase letters, e.g., BTC, ETH, USDC)'.
• Add error handling guidance to tool descriptions. E.g., 'If file not found, returns error code FILE_NOT_FOUND. Try list_directory() to verify path.'
• Implement tool annotations: mark read_file and get_price with readOnlyHint=true; mark search_docs with idempotentHint=true to signal retry safety.
• Validate and document input constraints. Add enum for coin (BTC, ETH, USDC, etc.); add regex pattern for path; add max length for search query.