Two tools with partial schemas and minimal descriptions. manage_artifact has a schema but lacks parameter descriptions and output documentation. search_knowledge_base has only a query parameter with minimal context. Neither tool description explains when to use it, what it returns, or error handling. No tool annotations (readOnlyHint/destructiveHint). Descriptions are 80-90 chars (below 194-char baseline). Parameter descriptions are absent or trivial. No pagination, error guidance, or output schema documentation visible.

• Add descriptions to all parameters. For manage_artifact.type, specify: 'Type of artifact to generate: markdown, spreadsheet, html, or mermaid. Determines how content is rendered.' For sheets, explain: 'Array of sheet objects for spreadsheet artifacts. Each sheet must have name and data fields.'
• Document output schemas. Specify what manage_artifact returns (e.g., {artifactId: string, type: string, status: 'created'|'updated'}) and what search_knowledge_base returns (e.g., {results: [{id, title, content, score}], total: number, nextCursor?: string}).
• Expand tool descriptions to 150-250 chars. Add WHEN to use: 'Call manage_artifact when the user requests interactive visualizations, diagrams, or formatted data displays that benefit from side-panel rendering.' Add WHAT it returns and any prerequisites.
• Add error handling guidance. E.g., 'If artifact type is invalid, returns {error: "Invalid type. Must be markdown|spreadsheet|html|mermaid"}. If content is too large, returns {error: "Content exceeds 100KB limit"}.'
• Declare tool annotations in schema. Add readOnlyHint: false to manage_artifact (it writes state); readOnlyHint: true to search_knowledge_base (read-only query).