How do crypto debit cards work?

A crypto debit card converts your crypto to fiat at the moment of payment, then settles with the merchant via the Visa or Mastercard network. The merchant sees a normal card payment; you see your crypto balance debited. Some cards top up from a stablecoin balance for predictable spending.

Are there fees on a crypto card?

Most crypto cards charge: a small monthly fee or none, a 1–3% conversion fee per transaction, and FX fees for purchases in non-card-currency. Some premium cards waive fees if you hold the platform's native token. Always check before using a card abroad.

Can I use a crypto card anywhere?

Crypto cards work anywhere Visa or Mastercard is accepted — globally, online, in-store, and at ATMs. Geographic restrictions apply: most cards are not available in the US (regulatory) or some emerging markets (KYC complexity). Dubai, Singapore, and the EU have the broadest crypto card access.

Is a crypto card safe?

Crypto cards are as safe as traditional debit cards from a payments perspective. The crypto risks are: centralised custody of funds backing the card, platform insolvency risk, and stablecoin de-pegging risk if you spend a stablecoin. Use cards from regulated issuers and never hold large balances.

What is a DeFi aggregator?

A DeFi aggregator is a platform that routes your crypto swaps across hundreds of decentralised exchanges (DEXes) simultaneously to find the best rate and lowest slippage. Instead of trading on a single DEX like Uniswap, an aggregator like Steyble splits your trade across multiple pools and chains to maximise your output.

What is a crypto super app?

A crypto super app is a single non-custodial platform that combines every DeFi service — token swapping, staking, perpetuals trading, prediction markets, copy trading, cross-chain bridging, and crypto cards — in one interface. Steyble is a crypto super app, meaning you never need to switch between multiple DeFi applications.

Is Steyble self-custodial?

Yes. Steyble is entirely non-custodial and self-custodial. You hold your private keys at all times. Steyble provides the interface and smart contract routing, but never holds, controls, or has access to your assets. Every transaction requires your explicit wallet signature.

How do prediction markets work in crypto?

Crypto prediction markets let you buy or sell shares in the outcome of real-world events using on-chain smart contracts. If you buy a 'Yes' share at $0.35, you receive $1 if the event occurs (a $0.65 profit) or lose $0.35 if it does not. Markets cover crypto prices, elections, sports results, and macro events. Steyble's prediction markets are non-custodial — your funds remain in your wallet until settlement.

What are perpetual futures in crypto?

Perpetual futures (perps) are leveraged crypto trading contracts with no expiry date. Unlike traditional futures that expire monthly, perps let you hold long or short positions indefinitely. A periodic funding rate keeps the perp price aligned with spot. Steyble perpetuals run on decentralised smart contracts — you trade directly from your own wallet with full transparency into liquidation parameters.

How does copy trading work on Steyble?

Copy trading on Steyble automatically mirrors the on-chain trades of verified top-performing wallet strategies. You choose the wallets you want to copy, set your position sizing and risk limits, and Steyble replicates their trades in real time. Unlike centralised copy trading, Steyble is non-custodial — you never give up control of your funds.

What is the best way to earn passive income with crypto in 2026?

The best methods for passive crypto income in 2026 are: (1) liquid staking ETH or SOL at 3.5–8% APY, (2) lending stablecoins on lending protocols at 5–9% APY, (3) non-custodial copy trading to mirror proven wallet strategies, (4) providing liquidity to stablecoin pools at 3–6% APY, and (5) on-chain prediction markets for event-driven returns. Steyble provides access to all five methods in a single platform.

What is the best DEX aggregator in 2026?

The best DEX aggregators in 2026 route across 15+ blockchains and 100+ liquidity sources with MEV protection. Steyble's swap aggregator covers 250+ liquidity sources across Ethereum, Solana, Arbitrum, Base, and more — consistently delivering better rates than going directly to any single DEX. For large swaps, using an aggregator saves 0.5–2% per transaction.

What Is a Crypto Card? The Self-Custodial Spending Architecture

A crypto card lets you spend stablecoins at any Visa or Mastercard terminal. Here is the architecture that connects a self-custodial wallet to your morning coffee.

A crypto card is a Visa or Mastercard that lets the holder spend crypto-denominated funds at any merchant in the world that accepts card payments — over 100 million terminals. The interesting question is not what it does at the cashier (it works exactly like any other card) but what happens behind the scenes between the merchant terminal and the user's self-custodial wallet. That architecture is the difference between a real crypto-spend product and a glorified prepaid card.

The Pre-Funded Model (Legacy)

User sends crypto to a custodial issuer (BitPay, Wirex, the early CryptoCom card)
Issuer credits the user's account in fiat or USD-equivalent
The card spends from that fiat balance — the user is custodial-exposed for every dollar loaded
Reload requires a fresh on-ramp transaction — slow and capital-inefficient
If the issuer fails, the loaded balance is at risk — exactly what happened to multiple 2022-2023 issuers

The Real-Time Settlement Model (Modern)

The card is bound to the user's self-custodial wallet — keys never leave the device
Authorisation hits a co-located Visa/Mastercard processor that can call the wallet's stablecoin balance in real time
If the wallet has sufficient USDC, the processor approves the auth and posts a swap-then-settle on-chain transaction
The user sees the swap in their wallet feed within seconds; settlement to the merchant follows the standard card settlement window
Funds remain self-custodial right up until the moment of authorisation — no idle custodial balance, ever

Why the Difference Matters

The pre-funded model is fundamentally a custodial product wearing crypto branding. The real-time settlement model is a genuine extension of self-custody to point-of-sale. The user gets full DeFi yield on their stablecoin balance until the literal moment they tap the card — instead of parking dead capital with an issuer earning nothing.

What to Look For

Real-time settlement, not pre-funding — verify the auth flow with the issuer
Cashback in stablecoin, not points — points programmes can be devalued unilaterally
Visa/Mastercard network coverage — never accept a 'crypto-only' or single-network card
Apple Pay and Google Pay support — table stakes in 2026
Spend limits per region — a credible card discloses daily limits before you apply

The Steyble Card

The Steyble Card spends USDC directly from the user's self-custodial wallet, settles in real time at any Visa terminal, returns 1.5% cashback in USDC, and works with Apple Pay and Google Pay. There is no pre-funded balance, no custodial dwell time, and the user keeps earning DeFi yield on their stablecoin balance up to the millisecond of authorisation. This is the canonical self-custodial spend architecture in 2026.