Single tool 'execute_skill_action' has a reasonable name starting with a verb, but critical gaps undermine quality. Description is only 44 characters, below the 10-1024 baseline and insufficient for LLM selection. Input schema is present with three parameters (target_sku_identifier, intended_host_device, required_voltage_watts), all with types and descriptions, but output schema is completely undocumented, LLMs cannot plan downstream calls. No error handling guidance, no pagination, no idempotency markers. The tool appears to perform a read-only validation but lacks structured output documentation. Tool definition is visible in mcp_server.py but implementation is minimal (only prints JSON startup message; actual logic is in client.py, which is not integrated into the MCP server).

• Expand tool description to 100-200 characters. Example: 'Validate SKU compatibility with a target device and power requirements. Returns hardware compatibility status, power delivery sufficiency, merchant conflicts, warranty info, and audit dossier URL. Use this to verify cross-merchant SKU specifications before purchase or integration.'
• Document the complete output schema with field types and descriptions. Example: {validation_report_id: string, sku_identifier: string, hardware_compatibility_verified: boolean, power_delivery_sufficient: boolean, merchant_spec_conflict_detected: boolean, manufacturer_warranty_months: integer, specification_audit_dossier_url: string}
• Implement actual MCP protocol handler in mcp_server.py. Wire the client.py validation logic into the MCP tool invocation flow. Currently, the server only prints a startup message and cannot handle tool calls.
• Add error handling guidance. Document what happens if SKU is not found, device is unsupported, or power requirements are invalid. Provide recovery hints (e.g., 'If SKU not found, check the SKU identifier format or call list_available_skus().').
• Add tool annotations to the schema: readOnlyHint=true (since this is a validation/read-only operation). Consider adding idempotentHint=true if repeated calls with the same inputs always return the same result.