Defined
Multi-chain trading terminal for tokens, Hyperliquid perps and prediction markets, settled in USDC.
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Defined key facts
| Category | Trading tool |
|---|---|
| Chains | Solana, Ethereum, Base, Polygon and other networks covered by the Codex API |
| Platforms | Web, iOS, Android |
| Fees | Spot 0.5%, perps 0.025%, predictions 0.25% ($0.50 minimum per order) |
| Launched | 2021 |
| Company | Codex Data Inc. (Defined is built by Codex) |
| US availability | Available: terms name no country restrictions |
What is Defined?
Defined is a trading terminal and charting platform, built by the team behind the Codex data API, that users have relied on since 2021. It combines on-chain tokens, perpetuals via Hyperliquid and prediction markets via Polymarket and Kalshi. Trades settle in USDC with routing by Relay; the spot fee is 0.5%.
How Defined works
When you create an account, Defined generates an EVM wallet and a Solana wallet for you, secured with Turnkey authentication.
Your trading balance is USDC on Solana. Token trades run through Relay, which routes the order to the chain the token lives on, so you never bridge yourself. Defined sponsors gas on Ethereum, Base and Polygon and uses a paymaster on Solana; on other networks Relay tops up gas on your first trade. Market, limit and stop orders are supported, with expiry dates on limit and stop orders.
Perpetuals trade on Hyperliquid with up to 20x leverage, and prediction markets on Polymarket and Kalshi. Both use funds moved out of your cash balance into those venues. Data comes from Codex, which the docs say covers more than 80 million tokens on 40+ networks, and charts use TradingView. Trending lists rank by volume, price moves and transaction count; Defined states it has never sold trending spots or ads. You cannot connect an outside wallet to trade.
How to start with Defined
- Sign in at defined.fi with email, Google, Apple or X.
- The iOS and Android app shares the same account, wallets and cash balance.
- Fund the account by sending USDC from any network, which is auto-converted to USDC on Solana, or buy USDC through MoonPay.
- Sending USDC on Solana avoids small conversion fees.
- Other coins you deposit stay as those tokens until you sell or convert them.
- Spot orders start at $5.
- Perps and predictions have region restrictions, so check availability before moving funds to them.
Defined fees and limits
- Defined charges 0.5% on spot trades, 0.025% on perps and 0.25% on predictions.
- Every spot order carries a $0.50 minimum fee, which only affects orders under $100.
- Relay's own fees are added on top of the 0.5%.
- Referrers earn 30% of trading fees from direct referrals, with no cap, attributed on a last-click basis.
Defined says the trading fee covers gas and priority fees on the networks it sponsors.
Risks to know before using Defined
- You can export the private keys of your Defined wallets, which means their safety depends on how you store them.
- Trading relies on third parties: Relay for routing, Hyperliquid for perps, Polymarket and Kalshi for predictions, each with its own contracts and rules.
- Leverage up to 20x can lead to liquidation.
- Users of the older Defined app must open a new account and move assets themselves; the old app stays at un.defined.fi.
Defined alternatives
Other projects people compare with Defined.
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Where Defined ranks on DappAtlas
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Defined pros and cons
- Spot fee of 0.5%, lower than the 1% common among terminals
- No paid trending placements, per its docs
- Gas sponsored on Ethereum, Base, Polygon and Solana
- $0.50 minimum fee per order, so orders under $100 pay more than 0.5%
- Minimum order size of $5
- Relay routing fees are charged on top of the 0.5% fee
Defined FAQ
What is Defined?
Defined is a trading terminal and charting platform, built by the team behind the Codex data API, that users have relied on since 2021. It combines on-chain tokens, perpetuals via Hyperliquid and prediction markets via Polymarket and Kalshi. Trades settle in USDC with routing by Relay; the spot fee is 0.5%.
Which chains does Defined support?
Solana, Ethereum, Base, Polygon and other networks covered by the Codex API.
How much does Defined cost?
Spot 0.5%, perps 0.025%, predictions 0.25% ($0.50 minimum per order), according to Defined’s own page (checked Sep 26, 2026).
Is Defined available in the US?
Available: terms name no country restrictions, according to Defined’s own page (checked Sep 26, 2026).
Sources
How this page works
Sources: Defined: official site, Defined: Referrals and rewards, Defined: Docs home. Data as of Sep 26, 2026.
Not affiliated with any project listed. Educational content, not financial advice.