Cube

Cube Exchange, operated by Cube Group, Inc., is a crypto trading platform that combines centralized-exchange order-book execution with self-custody. Users create a multi-party computation (MPC) vault at account creation through a distributed key generation process involving the user, Cube, and an independent Guardian network, producing key shares under a two-of-three signature threshold. Assets remain in per-user, segregated MPC wallets (for example separate BTC, ETH and SOL wallets within one vault) rather than pooled omnibus custody, and matched trades are published to a settlement layer called CubeNet, described as a meta-L2 blockchain, while account balances update immediately on match.

The platform lists more than 1,420 tokens tradable from a single account and offers spot markets with market, limit and post-only orders, a convert tool with some spread control, one-tap "bundles" for diversification, order-book depth views, price alerts, portfolio tracking, rewards and loyalty programs, and an in-app education hub. Automated execution algorithms (TWAP and DCA) run natively from the user's non-custodial vault. Institutional-oriented features include sub-accounts with role-based permissioning and continuous monitoring of signing flow and infrastructure health by Guardian nodes. Cube also publishes an open-source AI trading agent project (cubexch/ai-fund) built with Claude and MCP that connects to the exchange's low-latency API and supports paper trading with multiple agent "skills."

Access is available through the web platform and native iOS and Android apps, where keys are stored locally on the device and protected by the Secure Enclave. The company markets onboarding without identity verification to start, deposit or withdraw, while its FAQ states KYC verification is required to place orders and Level 2 KYC is required to use the fiat-to-USDC purchase route through a payment provider partner; the iOS app includes an in-app identity verification flow using Sumsub.

Founding story

Cube's founders state they built the company after trading on exchanges that each had what they considered a deal-breaker — custody risk, hidden spreads, or infrastructure that failed under load — and set out to build the exchange they wanted to trade on, drawing on systems experience from Citadel, JP Morgan, DRW and Solana Labs.

Business model

Cube operates a trading venue and earns revenue from published maker/taker trading fees rather than spread markups, positioning transparent tiered pricing as a differentiator. Fiat on-ramping is handled by a third-party payment provider that delivers USDC directly into the user's MPC vault.

Transaction-based maker/taker fees; the iOS listing cites maker fees of 0.14% and taker fees of 0.24%, with a full schedule in the app. The company states fees are published up front with no spread markups or hidden conversion costs.

Traction

Cube's sign-in page cites more than 1M users and 1,420+ tradable tokens. The iOS app holds a 5.0 average rating from 14 ratings. The company reports operations in four countries and cites strategic partners including GSR, Flowdesk, Susquehanna, Acheron Trading and Anagram.

Latest developments

Recent product work includes an AI trading agent repository (cubexch/ai-fund) built with Claude and the Model Context Protocol, offering 20+ trading "skills" over the exchange's low-latency API with paper trading, and iOS release 1.38.0 with a redesigned history view, improved candle charts, a side menu with identity verification, and Sumsub-backed KYC token handling.