CaudexCatena MCP is a secure remote Model Context Protocol server that brings blockchain intelligence into supported AI clients such as ChatGPT, Claude, Cursor, and Codex. Investigators can start with a wallet address, transaction hash, entity, or cross-chain question and receive structured, reviewable context about activity, counterparties, exposures, risk signals, labels, and fund movements. It supports address triage, transaction analysis, tracing across related wallets and chains, exposure review, and evidence-aware case-note drafting. OAuth-secured access keeps the investigator in control, while source context, confidence signals, and review boundaries remain visible. CaudexCatena MCP is built for blockchain investigators, AML and compliance analysts, researchers, journalists, and teams that need faster AI-assisted investigations without treating model output as a final finding.