TimeCopilot acts as a unified forecasting layer that orchestrates multiple foundation models such as Chronos, Moirai, TimesFM, and TimeGPT through a single API. It leverages LLMs to reason about forecasting tasks, enabling natural-language-driven time series analysis across finance, energy, and web analytics domains. Users can perform forecasting, anomaly detection, and model cross-validation without deep expertise in each individual foundation model.