Two tools with solid input schemas and reasonable descriptions, but with notable gaps in parameter documentation and output schema clarity. Naming follows verb_noun convention appropriately (search_onyx, chat_with_onyx). Both tools have descriptions between 34-70 chars, which is at the lower end of the 10-1024 char range. Input schemas are present and typed, but several parameters lack descriptions. Output structure is returned as text content with metadata, but no formal output schema documentation is provided in the code. Error handling returns text responses but lacks actionable recovery guidance. Overall quality is above median but requires improvements in parameter documentation and output schema clarity.

• Add formal output schema documentation. For search_onyx, document that the response contains an array of 'documents' with fields: 'semantic_identifier' (string), 'document_id' (string), 'score' (float), 'chunk_text' (string). For chat_with_onyx, document that the response includes 'answer' (string) and 'documents' (array) with the same fields.
• Enhance parameter descriptions with discovery hints and valid value guidance. E.g., 'documentSets: List of document set names (e.g., "internal-policies", "customer-docs") to filter search. Leave empty to search all available sets. Call list_document_sets() first to discover valid names.' (Note: add a list_document_sets tool if not present.)
• Add actionable error messages. In handleSearchOnyx and handleChatWithOnyx, catch specific error types and return: 'No results found for query: "<query>". Try rephrasing or removing filters (documentSets). ' or 'Invalid document set: "<name>". Available sets: [list]. Try again with a valid set.' This helps LLMs self-correct.
• Document result limits and pagination in tool descriptions. Update search_onyx description: 'Returns up to 10 most relevant documents. Use maxResults parameter (1-10) to control count. For large result sets, consider narrowing documentSets or refining the query.' Add a note to chat_with_onyx if it also has implicit limits.
• Standardize response field names. Ensure that identifiers returned in responses match parameter names. If input is 'chatSessionId' (camelCase), output should be 'chatSessionId' (not 'chat_session_id'). Update both tools to use consistent naming convention (recommend camelCase throughout).