This server has a single tool 'execute_skill_action' with critical definition gaps. The tool description is extremely vague (58 chars, below the 10-1024 baseline). No input schema is visible in the source code, the tool appears to be declared only in a JSON status message with no formal registration, parameter definitions, or output schema. The implementation is a stub that prints a status message and exits; there is no actual tool logic. Per HARD SCORING RULES, missing input schema → schema score 0; vague description under 20 chars → description score capped at 20. Tool definition is inferred from JSON output, not explicitly registered → overall capped at 50. Average of single tool: 12.

• Define the tool with explicit JSON Schema input parameters. Example: { 'type': 'object', 'properties': { 'household_size': { 'type': 'integer', 'description': 'Number of people in household (1-10)', 'minimum': 1, 'maximum': 10 }, 'cleaning_frequency': { 'type': 'string', 'enum': ['weekly', 'bi-weekly', 'monthly'], 'description': 'How often cleaning supplies are used' } }, 'required': ['household_size', 'cleaning_frequency'] }
• Expand tool description to 100-200 chars explaining purpose, when to call it, and what it returns. Example: 'Curate a personalized zero-plastic refill bundle based on household size and cleaning frequency. Returns bundle ID, refillable vessels, refill count, plastic bottles avoided, and carbon savings. Call this to generate sustainable home product recommendations.'
• Document the output schema with all returned fields, types, and descriptions. Map the client.py curate_zero_plastic_home_bundle() response fields (bundle_id, refillable_aluminum_vessels, concentrated_refill_tablets_count, etc.) to the tool's output contract.
• Add error handling: document what happens if household_size is out of range, if cleaning_frequency is invalid, or if the bundle service is unavailable. Provide actionable recovery guidance (e.g., 'Valid frequencies: weekly, bi-weekly, monthly').
• Register the tool formally in the MCP server using the protocol's tool registration mechanism, not just a JSON status message. Ensure the tool name, description, and schema are part of the MCP handshake.