CaseFile: A Graph-Based AI Agent Investigates Fraud by Tracing Relationships

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An alert flagged an $8,150.50 transfer between two new accounts, and each account looked ordinary when viewed alone. The suspicious pattern only appeared when the connections between accounts were examined, including five new accounts sharing the same devices. CaseFile, a hackathon project built with FalkorDB, uses an LLM that queries a graph database through nine Cypher-based tools rather than relying on prompt-stored customer data. The agent also correctly cleared an innocent customer who shared a device with the ring, based on her ten months of normal history. Each verdict is backed by a reproducible trail of tool calls, and the project's code is publicly available on GitHub.

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