Risks of swaps and bridges.

This page is an educational summary, not legal or financial advice. RouteNova is an independent prototype and does not custody your funds, route real transactions, or take responsibility for any action you take elsewhere. Read this page slowly. Read the docs of every protocol you actually use.

1. Smart-contract risk

Every swap or bridge you do involves running code. Code can have bugs. Audits and bounty programs reduce, but never eliminate, the chance that a contract behaves differently than its docs claim. Older, more battle-tested contracts have lower (but non-zero) smart-contract risk than newly deployed ones.

2. Bridge counterparty risk

Bridges introduce a trust layer that the underlying chains do not have. Different bridge designs make different trade-offs — lock-and-mint, burn-and-mint, liquidity pools, optimistic verification, validator quorums, ZK proofs. Each design has its own failure modes. A bridge can pause, get exploited, freeze withdrawals, or be deprecated. Bridge tokens (e.g. wrapped USDC vs native USDC) are not always interchangeable on the destination chain.

3. Slippage and price impact

The price you see at the top of a quote is not the price you receive. Larger trades on thinner pools shift the price against you. Slippage tolerance is a setting that protects you from receiving wildly less than expected, at the cost of the trade failing if conditions change.

4. MEV, front-running, and sandwich attacks

Public mempools allow searchers and bots to reorder transactions around yours, often extracting value from your trade. Some chains and routers offer private order flow, batched execution, or other MEV protections. Whether and how to use them is a per-route decision.

5. Token-impersonation and approvals

Anyone can deploy a token with the same ticker as a popular asset. Always verify the contract address. Granting unlimited token approvals to a contract is convenient but means that a future exploit of that contract can drain your balance. Periodically revoke approvals you no longer need.

6. Gas-fee volatility

Network fees on Ethereum and other chains spike during congestion. A route that was economical at 20 gwei may be uneconomical at 200. Time-sensitive trades become disproportionately expensive when blocks fill up.

7. Chain-level risks

Chains experience reorgs, sequencer outages, and validator-set events. Optimistic rollups have challenge periods that affect withdrawal time. Sidechains and L2s have their own consensus assumptions distinct from the L1 they settle to.

8. Wallet, key, and phishing risk

The most common loss is not a smart-contract exploit but a compromised key or a malicious site. Bookmark canonical front-ends, double-check URLs, never share your seed phrase, and treat every signature request as if it could drain your wallet — because some of them can.

9. Regulatory risk

Laws affecting cryptocurrency, DeFi, and bridges vary by jurisdiction and change without notice. You are responsible for your own compliance, including taxes, sanctions screening, and any reporting obligations.

10. RouteNova-specific notes

RouteNova displays only illustrative numbers generated locally. Nothing on this site is a real quote. We do not custody funds, sign transactions, or interact with any blockchain on your behalf. References to public protocols are descriptive only — we are not affiliated with, endorsed by, or operating any of them.

If anything on this page is unclear, ask. This is the page we'd want a friend to read before their first cross-chain trade.