Everything about web3
31 connected nodes across dictionary, workflows, comparisons, prompts, tool stacks and use cases.
Web3 Wallet
A Web3 wallet stores your keys and signs transactions, letting you hold assets and connect to on-chain applications without an intermediary.
Self-Custody
Self-custody means you control the private keys to your assets, so no company can freeze, lend out or lose them on your behalf.
Seed Phrase
A seed phrase is the 12–24 word backup from which every private key in a wallet is derived — whoever holds it holds the wallet.
Private Key
A private key is the secret number that authorises transactions from an address; the public address is derived from it, never the reverse.
Smart Contract
A smart contract is code deployed to a blockchain that executes deterministically when called, holding balances and enforcing rules without an operator.
DeFi
DeFi is financial infrastructure built as open smart contracts — lending, trading, staking and derivatives that anyone can use or compose.
Gas Fee
A gas fee is the network payment for computation and storage in a transaction, priced by demand rather than by trade size.
Token Approval
A token approval grants a contract permission to move your tokens — persistent, often unlimited, and the most common source of avoidable losses.
Bridge
A bridge moves value between blockchains by locking or burning on one side and issuing a representation on the other.
Multichain
Multichain means operating across several networks at once — more opportunity, more surfaces to secure and more addresses to monitor.
Account Abstraction
Account abstraction turns a wallet into a programmable smart account: custom signing rules, spending limits, sponsored gas and batched actions.
On-chain Agent
An on-chain agent is an AI agent with read access to blockchain data and a tightly scoped ability to propose or execute transactions.
Hot Wallet vs Cold Wallet
Hot wallets trade convenience for exposure; cold wallets trade friction for a signing key that never touches an internet-connected device.
Custodial vs Self-Custody
Custody choice is a swap between counterparty risk you cannot control and operational risk you can.
Web2 Apps vs Web3 Apps
Web2 apps authenticate with accounts and store state on private servers; Web3 apps authenticate with a wallet signature and keep state on a public chain.
MetaMask vs OKX Web3 Wallet
MetaMask is the EVM default with the widest DApp support; OKX Web3 Wallet bundles multi-chain coverage, a DEX aggregator and exchange integration in one app.
Phantom vs OKX Web3 Wallet
Phantom is a Solana-first wallet with best-in-class UX on that ecosystem; OKX Web3 Wallet is a generalist multi-chain wallet for users spread across networks.
Rabby vs OKX Web3 Wallet
Rabby is the safety-focused EVM wallet with pre-transaction simulation; OKX Web3 Wallet trades some of that depth for multi-chain breadth and built-in trading.
DEX Trading Workflow
Execute an on-chain swap deliberately: research, liquidity check, route comparison, sized order, then position monitoring.
AI Agent + Web3 Execution
Give an AI agent on-chain capability safely: read freely, propose openly, and sign only inside hard-coded limits.
Stablecoin Web3 Workflow
Move stablecoins into self-custody and use them across Web3 applications without losing track of chain, version or exposure.
Automate Repetitive Web3 Actions
Replace manual claims, approvals and rebalances with scoped automations that cannot spend more than you allowed.
Transaction Analysis Prompt
Explains what a specific transaction did, what it authorised, and what risk it left behind.
Recurring Crypto Workflow Prompt
Specifies a safe recurring on-chain automation with spend caps, idempotency, failure handling and a kill switch.
Crypto Agent Design Prompt
Specifies an AI crypto agent's tools, permissions, guardrails and evaluation before a single line is written.
Crypto Trading Stack
Market data, charting, DEX access and a Web3 wallet — the minimum toolset for deliberate on-chain trade execution.
DeFi Execution Stack
Web3 wallet, DEX aggregator, DeFi protocols and a portfolio tracker — the toolset for actually deploying capital on-chain.
AI Agent + Web3 Stack
Agent framework, MCP/API tools, blockchain data access and a limited signing layer — with policy enforced in code.
Use DeFi With A Web3 Wallet
A first-time DeFi user moved from an exchange to self-custody with a test-transfer routine and a 2% allocation cap, avoiding two protocol failures.
Monitor Wallet Transactions
Alerting on the user's own wallet activity caught an unauthorised approval attempt and forced an approval cleanup that removed 14 standing allowances.
Automate Repetitive Web3 Actions
Automating reward claims and gas top-ups with session keys and spend caps saved about 5 hours per month with no unbounded authority.