Two tools with clear naming (vitals_get, vitals_set) and reasonable descriptions (100-150 chars). Input schemas present with proper types and enums. However, output schemas are undocumented, LLMs cannot predict response structure. Error handling is absent; no guidance on invalid inputs or failure modes. Parameter descriptions are minimal (e.g., 'New value 0.0-1.0' lacks context on when/why to update). Missing tool annotations (readOnlyHint, destructiveHint). vitals_set lacks validation error messaging.

• Document output schemas explicitly. Add a 'returns' section to each tool definition showing {vitals: {[dimension]: {value, baseline, decay_rate, note, last_updated}}, triggers: [{dimension, value, trigger, action}]}.
• Add error handling to vitals_set: validate value is 0.0 - 1.0, dimension is in enum, and return actionable errors like 'Invalid value: 3.5, must be between 0.0 and 1.0'.
• Add tool annotations: vitals_get with readOnlyHint=true; vitals_set with destructiveHint=true (since it modifies state).
• Expand parameter descriptions: 'value: New value for the dimension (0.0=minimum, 1.0=maximum). E.g., 0.3 = low curiosity, 0.8 = high confidence.'
• Add a 'whenToUse' field to vitals_set explaining when to call it (e.g., 'When the agent completes a task and needs to reflect on emotional state').