Enterprise documents are complex and contain valuable information that traditional processing tools struggle to extract effectively. LlamaCloud Index offers a solution by enabling seamless parsing and indexing of unstructured documents, which can then be integrated into AI agents using LlamaIndex's open-source framework. This tutorial demonstrates how to set up a LlamaCloud Index with a dataset of JPMorgan Chase's deposit account disclosures and rate agreements, aiming to create an AI agent capable of answering complex banking questions by reasoning over the documents. Through various steps, users learn to install dependencies, create and test an index, integrate a language model, and build tools for the agent to execute sophisticated queries. The agent can intelligently retrieve context-specific information, perform multi-step reasoning, and integrate document retrieval with calculations and business logic. This approach transforms static documents into actionable insights, applicable to various domains like legal contracts, technical manuals, and medical records, by enabling precise calculations and transparent reasoning.