This server is non-functional as an MCP implementation. The single tool 'execute_skill_action' has no visible input schema, no parameter definitions, and a trivial description (11 chars). The mcp_server.py merely prints a JSON status message and exits, it does not implement the MCP protocol at all. No request/response handling, no tool invocation mechanism, no error handling. The 'client.py' is a wrapper that returns hardcoded config, not a real MCP server. This is a stub, not a working tool gateway.

• Define a complete JSON Schema for execute_skill_action input: specify all required/optional parameters, their types (string, number, boolean, object, array), constraints (enums, min/max, patterns), and descriptions (50-100 chars each).
• Expand tool description to 100-200 chars: explain WHAT it does, WHEN to use it, and WHAT it returns. E.g. 'Execute a predefined skill action (e.g. send_email, create_ticket) by name and parameters. Returns the skill result or error details.'
• Document the output schema with all returned fields, their types, and meanings. Include IDs and references needed for chaining to other tools.
• Add error handling that returns structured errors with: error code, human-readable message, the invalid value/constraint violated, and a recovery hint (e.g. 'Try calling list_available_skills() first').
• Implement idempotency hints and destructive operation warnings via tool annotations (idempotentHint, destructiveHint) so LLMs know which calls are safe to retry.