1inch: score, security record and what it is for

88/100SCORE · ATrusted Grade A, excellent

1inch splits a trade across multiple liquidity sources to get a better fill than any single venue would give. Its Fusion mode has professional resolvers compete to fill your order, which materially reduces sandwich attacks. Coverage spans most major EVM chains, the core router has never been exploited, and there is no protocol fee on classic swaps.

The facts

LIVE SINCE: 2019
TYPE: Aggregator
CHAINS: Ethereum, BNB Chain, Polygon, Arbitrum, Optimism, Base, Avalanche and more
SWAP FEE: No protocol fee on classic swaps. Fusion mode has resolvers compete for your order, which can beat the visible price.
AUDITS: Extensively audited. Long running with no exploit of the core aggregation contracts.
WHO CAN CHANGE IT: 1INCH token governance with a DAO structure.

How the score breaks down

security25/30

liquidity22/25

chains15/15

costs14/15

decentralisation12/15

Where it is strong and where it is not

✓ Strengths

Splits a single trade across many venues for a better fill
Fusion mode gives real protection against sandwich attacks
Very wide chain coverage
No exploit history on the core router

✗ Weaknesses

Approvals are granted to the router, so approval hygiene matters
The interface presents a lot of options at once
You still inherit the risk of the pools it routes into

Exploit history

No exploit of the core contracts on record.

Our read

A strong aggregator with a clean record and unusually good protection against being sandwiched, which is a real and underappreciated cost on Ethereum. The one thing to stay on top of is revoking router approvals you no longer need.

BEFORE YOU SWAP

Swap keeps failingSlippage, approvals, taxes and thin liquidity. Revoke approvalsEvery swap leaves a permission behind. Clear them. Gas tokensWhy you need the chain's native coin first. Pick a walletYou need self custody before you can use any DEX.

RISK WARNING Crypto assets are highly volatile and largely unregulated. You can lose everything you put in. Nothing on this page is financial, investment or tax advice, and nothing here is a recommendation to buy or sell any asset. Do your own research and never commit money you cannot afford to lose.