Two tools with complete input schemas and descriptions. Both tools have clear names (evolve, evolution_list) starting with action verbs. Descriptions are present (194 and 80 chars respectively) and explain purpose. Input schemas are well-formed with typed properties and enums. However, output schemas are not documented, handlers return untyped Record<string, unknown>. Error handling is minimal (only basic validation in evolve). No tool annotations (readOnlyHint, destructiveHint, idempotentHint). Missing parameter descriptions for optional fields (from_value, to_value, dimension, session_ref in evolve). evolution_list lacks description for the 'namespace' parameter. No guidance on when to use each tool or dependencies between them.

• Document output schemas for both tools. Specify that evolve returns {id, change, status, confidence} and evolution_list returns {status, count, evolutions: [{id, change, trigger, ...}]}.
• Add descriptions to all optional parameters: 'from_value: Previous state (optional)', 'to_value: New state (optional)', 'dimension: Part of identity, values, preferences, patterns, or beliefs (optional)', 'session_ref: Session date or identifier (optional)', 'namespace: Namespace for isolation (defaults to default)'.
• Add tool annotations: evolution_list should have readOnlyHint: true; evolve should have destructiveHint: true (creates persistent records).
• Enhance error messages with recovery guidance. E.g., 'Invalid confidence: got "very_high", must be one of: high, medium, low' instead of generic validation errors.
• Clarify pagination in evolution_list description: 'Returns up to 20 evolution proposals by default (max 100). Results ordered by creation date, newest first.'