Private RPC routing: which protections should you verify?
Compare private transaction services by chain support, information sharing, fallback and execution rules rather than the word private.
The reference
All swap guides
Browse 484 guides to DEX aggregation, BNB Chain, swap execution and integration.
Recovery agents asking for an unlock fee: what evidence matters?
Evaluate recovery claims by asking who can move the funds and rejecting fabricated unlock payments or secret requests.
Same ticker, different token: verify the contract before swapping
Identify a token by chain and contract address instead of trusting a copied ticker, logo or wallet valuation.
Stolen seed or malicious approval: why the response differs
Choose the right response by distinguishing stolen signing control from a malicious token permission.
Unexpected tokens in your wallet: when leaving them alone is enough
An unsolicited token balance is not an obligation to claim, sell or visit the website embedded in its name.
Using a separate swap wallet to contain permission risk
Use account separation to limit approval exposure while understanding the limits of shared secrets and public funding links.
Verified source code is not an audit or safety guarantee
A verified-source badge helps inspect deployed code but does not certify that the contract is safe to approve or trade.
Verify the recipient on the device before approving a swap
Use the hardware device’s trusted display to check destination details while distinguishing router and final token recipient.
Wallet security warning during a swap: what to verify before proceeding
Investigate a wallet’s site, token, address or transaction warning before deciding whether the requested swap is acceptable.
Wallet synchronization and validation scams after swap errors
Recognize fake synchronization or validation remedies offered after a swap error and use evidence-based support instead.
What to inspect in a typed-data signature before a swap
Inspect the signing domain and economically meaningful message fields in a swap-related typed-data request.
What your swap reveals on a public blockchain
Understand what public swaps reveal and why pseudonymous addresses, private submission and account disconnection do not erase chain history.
Which permission expires in a Permit2 request?
Read Permit2 signature deadlines and allowance expirations as separate limits with different effects.
Which token owner powers can change your ability to sell?
Identify administrative powers that can alter token transfers, supply or implementation after you buy.
Why a hardware wallet does not make blind signing safe
Hardware wallets protect signing keys, but unreadable approvals can still authorize harmful token movement.
Why a router upgrade can change the risk of an old approval
Understand how persistent token permission interacts with a router whose implementation can change.
Why high slippage tolerance can worsen sandwich losses
A wider slippage tolerance permits worse execution and can increase the room available for harmful transaction ordering.
Why two allowance scanners can show different results
Explain differences between allowance tools by checking network coverage, indexing and the permission types each tool recognizes.
A token transfer is paused or your address is blocked
Recognize token-level pause or address restrictions that a wallet setting cannot override.
Allowance too low after a successful approval
Compare the current spender allowance with the actual amount required after an approval appears to have succeeded.
Approval is pending: should I submit the swap anyway?
Understand what a pending approval means for your next swap and how to avoid stale quotes or duplicate permission transactions.
Can I cancel a pending swap after signing?
Understand the limits and cost of attempting to replace a pending swap with a cancellation transaction.
Does a successful transaction receipt prove my swap completed?
A successful outer transaction does not always prove every intended swap step ran; verify settlement and recipient balances.
Dropped and replaced swap: which transaction matters?
Follow the confirmed replacement hash to determine whether an earlier pending swap executed, changed or was cancelled.
Dropped swap with no replacement: when is retrying reasonable?
A dropped transaction can reappear, so verify account nonce and submission state before retrying a swap.
Enough tokens to swap, but insufficient funds for gas
Why an account with enough input tokens can still be unable to pay for approval or swap execution.
Explorer says confirmed but my wallet still says pending
Resolve disagreement between a wallet’s pending label and a confirmed explorer transaction without submitting a duplicate swap.
Gas estimation failed before a swap: should I continue?
Understand what a failed preflight estimate is warning about and why entering a manual gas limit may not fix a swap.
Hardware wallet not detected at swap confirmation
Diagnose device connection and signing failures without exposing the hardware wallet’s recovery phrase.
How to identify your actual input and output in a swap receipt
Trace the assets that actually left and entered your account without double counting router and pool transfers.
