Implementation Phase: Model Context Protocol Tool Integration for Data Retrieval

Develop Python modules that mock enterprise data sources for energy costs (`get_energy_costs(location, date_range)`) and regulatory changes (`get_regulatory_status(location)`). Integrate these mock tools into your LangGraph agents using the Model Context Protocol (Model Context Protocol). Provide code snippets demonstrating how an agent (e.g., 'Financial Analyst' or 'Regulatory Compliance Agent') calls these Model Context Protocol-enabled tools and processes the structured data responses. Ensure error handling for tool failures.