FAQ

Nina by Antalpha is a Web3 AI trading agent from NASDAQ-listed Antalpha (NASDAQ: ANTA). It offers crypto market and on-chain analysis, US-stock and prediction-market research, Sentinel alerts, wallet safety checks, and trade drafts you sign yourself.

Nina is built and operated by Antalpha, a NASDAQ-listed company (NASDAQ: ANTA). Company details and contacts are on the Contact & Company page.

There is a Free plan, plus paid Pro ($19.99/month) and Elite ($99.99/month) subscriptions; see the pricing page. On trading, Nina takes no cut of your principal or profits, only a transparent routing fee on execution.

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On both the App Store and Google Play it is listed as Nina: Crypto AI Chat & Markets, published by Antalpha. Download it through the links on antalpha.com to avoid impersonation apps.

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Intelligence and data cover 50+ chains including Ethereum, Solana, BNB Chain and Base, with 120+ tools. Trades execute via supported venues on the chain you choose, and cross-chain routes are supported.

Yes, you can use Nina's market data and analysis. Prediction-market order placement is restricted in some regions, including Taiwan and the United States, where market data and analysis remain available. Where perpetuals and live trading are available is shown in the product and its documentation.

Yes, in three ways. In the Nina app, Nina finds the best route, calculates cost and drafts the trade, and you approve and sign it on your own wallet by default (Verification-free ordering for Polymarket and perpetuals, which you turn on yourself, are signed by a key you authorized); cross-chain routes are supported, and the app does not place orders on centralized exchanges. Sentinel only watches and alerts; it never places orders. Vibe Trading, Nina's AI trading bot, runs your rules automatically, currently in backtest and paper trading only; live trading is not yet available.

Never. Nina is non-custodial: with your own wallet the private key stays with you, and the built-in smart wallet's key is held by Privy and can be exported at any time. Nina drafts transactions, and you sign them on your own wallet by default (Verification-free ordering for Polymarket and perpetuals, which you turn on yourself, are signed by a key you authorized).

It depends on what the agent can do without your approval. An agent that drafts transactions for you to sign can't move funds on its own. An agent holding a key with withdrawal rights can, if it is compromised or misreads an instruction. In the Nina App trades need your wallet signature by default (Verification-free ordering for Polymarket and perpetuals, which you turn on yourself, are signed by a key you authorized), Sentinel can't trade at all, Vibe Trading currently runs only in paper trading, and over MCP the limit is your wallet signature, because exchange order tools are blocked by policy on the hosted server.

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Safety depends on the signing architecture more than on the quality of the model. Ask who holds the key that can move funds, how much a single instruction can move, whether a human reviews what each transaction does, and what standing approvals already exist.

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In a custodial setup a company holds your crypto and signs transactions for you. In a non-custodial setup you hold the keys and every transaction needs your own signature. Non-custodial removes the company's systems as a point of failure, but losses from phishing, malicious approvals or a lost seed phrase are yours to bear.

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No. Self-custody removes exposure to a platform's internal compromise and adds exposure to phishing, malicious signature requests, wallet drainers, and forgotten token approvals. You still carry risk; it is a different set of risks.

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Grant trading permission only, never withdrawal or transfer. Most exchanges also let you restrict a key to an IP allowlist, so it only works from servers you name, and let you lock withdrawals to an address allowlist; on OKX, for example, withdrawals then only go to addresses saved in your address book. If the key leaks, whoever holds it can place orders but cannot move funds out. Delete keys you no longer use.

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Sentinel is the watch mode in the Nina app: hand it an event or an asset and it watches prices and news around the clock, then pushes an alert with the reasoning when your conditions are met. Sentinel only alerts and never places orders; whether to trade is your call, and trades are signed in your own wallet by default.

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Vibe Trading is Nina's AI trading bot: describe your trading idea in one sentence and Nina turns it into a bot with clear rules that you backtest, then run in paper trading, checking its performance at any time. The difference is who executes: in the Nina app trades are signed by you in your own wallet by default; Vibe Trading runs your rules automatically, currently in backtest and paper trading only, and live trading is not yet available.

Yes. A bot can be backtested on historical data before it runs in paper trading. Backtest results are simulated on historical data and do not indicate future returns.

Not at present. Vibe Trading runs in paper trading and does not touch real funds. Live trading is not yet available; when it opens, the product documentation applies.

An MCP server is the service side of the Model Context Protocol, an open standard that lets AI agents discover and call external tools. Antalpha's MCP server at https://mcp-skills.ai.antalpha.com/mcp gives compatible agents such as Claude Code, Cursor or Codex access to Nina's data and tools. On October 29, 2026 it listed 121 tools, 17 of which can change state.

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The Antalpha MCP server is Nina's tool layer: the Nina app calls this same set of tools behind the scenes. The same tools are open to compatible AI agents such as Claude Code, Cursor and Codex; connect to https://mcp-skills.ai.antalpha.com/mcp and you can use them without the app.

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The live tools/list endpoint returned 120 tools on 21 October 2026, of which 17 can write and 103 are read-only. The count changes between releases; on 5 November it returned 124, still with 17 that write.

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Not on its own for on-chain actions: swaps, Polymarket orders and transfers return a signing page that you must sign in your own wallet. Exchange order and account tools for OKX and Binance are blocked by policy on Antalpha's hosted server and accept no API keys; exchange orders belong in the official apps.

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Add the server URL in your client's MCP settings, or run mcporter add https://mcp-skills.ai.antalpha.com/mcp --name antalpha-skills. Clients including Claude Code, Cursor, Windsurf, Codex, Gemini CLI, OpenCode and OpenClaw accept a plain HTTP endpoint.

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On a prediction market the price is the probability, not a payout multiple. A share pays $1 if the outcome resolves YES and $0 otherwise, so the price in cents is the market's implied probability in percent: a 31¢ YES share means about 31%. The large number on the page is the midpoint between the best bid and ask; a buyer pays the ask.

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Convert the best ask into an implied probability, set your own fair value before viewing the price, compute expected value net of the spread and overround, then rule out thin liquidity, ambiguous resolution criteria, and information that is already public.

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Each team is a separate contract, and every price carries a spread between buyers and sellers. On October 29, 2026 the 30 midpoints in the 2027 champion market added to 103.5% and the best asks to 107.3%. The excess is the overround. Divide each price by the total for a cleaner probability.

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