Decentralised finance, commonly called DeFi, describes blockchain-based applications that may offer trading, lending, borrowing or other financial functions through smart contracts. Removing a traditional intermediary does not remove risk; it changes where the risks sit.
What makes an application “DeFi”?
A DeFi application usually uses smart contracts to define rules for on-chain actions. A wallet signs transactions that interact with those contracts. The application may have a website interface, but the transaction itself can involve a contract, a token, a liquidity pool or an oracle.
Decentralised exchange
A protocol that may facilitate token swaps using smart contracts and liquidity mechanisms.
Lending protocol
An application that may let users supply or borrow assets under its collateral rules.
Stablecoin system
A crypto asset designed to seek a reference value, with mechanisms and risks that differ by issuer or protocol.
The risks are not optional details
DeFi can involve smart-contract bugs, price-oracle failures, token volatility, liquidity constraints, governance changes, fake websites and irreversible approvals. A protocol can work as designed and still create an outcome a user did not understand.
- Never connect a wallet or approve a transaction solely because it is promoted on social media.
- Read the application’s official documentation and verify the domain before interacting.
- An allowance can allow a contract to move tokens under specified conditions; review it carefully.
- High quoted yields can reflect significant risks and are not guaranteed returns.
Lending, borrowing and liquidations
Borrowing normally involves collateral. If collateral value falls or a loan’s risk parameters are breached, a position may be liquidated according to protocol rules. The user remains responsible for understanding how the specific application calculates thresholds and fees.
- A loan against volatile collateral can become riskier rapidly during a price move.
- The interest rate shown at one moment may change.
- Bridging assets between networks can introduce additional protocol and operational risk.
Use tools for history, not permission
CryptoRetail’s calculators can provide historical price context for major assets. They do not evaluate a DeFi protocol, verify a wallet prompt or recommend a yield strategy.
Crypto glossary
Clarify smart contracts, liquidity, gas and stablecoins.
Wallet safety guide
Review transaction and seed-phrase safety basics.
Historical calculators
Explore past market price paths with stated methodology.
A practical next step
Start with the crypto glossary, then read what crypto wallets are before using any wallet-connected application.