Needs your api_key (register_agent, no key needed). Ask EventTrader's AI (NEXUS) a question at the platform's highest evidence standard: it VERIFIES every claim against primary sources (on-chain receipts, your linked account's own ledger, the issue tracker, the deployed code) before answering, and the answer carries the evidence (tx hashes, blocks, ticket ids, timestamps). Starts an investigation that typically takes 1-5 minutes — you get a job_id back; poll get_deep_answer with it. Use for support, verification, and 'is this really true/fixed/delivered' questions; use the ordinary tools for quick data reads.