Two tools with minimal documentation. calculator has a basic description and schema, but ask_researcher lacks parameter descriptions and output schema documentation. Neither tool has error handling guidance or recovery hints. Naming is reasonable (verb-noun pattern), but descriptions are sparse (calculator: 95 chars, ask_researcher: 138 chars, both below the 194-char baseline). No tool annotations (readOnlyHint, destructiveHint, idempotentHint) despite both being read-only. Parameter descriptions are present but generic. No pagination, no output schema documentation, no error classification.

• Add output schema documentation to ask_researcher. Specify the structure of researcher findings (e.g., {findings: string, sources: string[], confidence: 'high'|'medium'|'low'}).
• Add readOnlyHint: true to both tools' definitions to signal they are safe to retry and have no side effects.
• Expand calculator description to include: supported operators (+, -, *, /, %), precision limits, and error handling (e.g., 'Returns error for division by zero or invalid syntax').
• Add length and format constraints to ask_researcher's question parameter: 'A natural-language research question (10-500 chars). Avoid yes/no questions; ask for specific information or analysis.'
• Document error responses for both tools with recovery guidance: 'If calculator returns a syntax error, check parentheses and operator spacing. If ask_researcher finds no results, try a broader question or check available files with list_files.'