We're seeing strange swapImpact / amountUsd values from /quote/v2 on same-chain EVM swaps, mostly on newer low-cap tokens (often Bankr launches on Base). Doesn't seem limited to one asset.
Example below uses EVE on Base (0xe7d192e52fa418236d6eecf7d5eb38da9dd11ba3) for reproduction purpose.
Request
POST https://api.relay.link/quote/v2
{
"user": "0x....",
"recipient": "0x....",
"originChainId": 8453,
"destinationChainId": 8453,
"originCurrency": "0x0000000000000000000000000000000000000000",
"destinationCurrency": "0xe7d192e52fa418236d6eecf7d5eb38da9dd11ba3",
"amount": "10000000000000000",
"tradeType": "EXACT_INPUT",
"slippageTolerance": "2500"
}
Response snippet
{
"details": {
"currencyIn": {
"amountFormatted": "0.01",
"amountUsd": "21.165148"
},
"currencyOut": {
"amountFormatted": "5710201.695984995566354432",
"amountUsd": "17.130605"
},
"swapImpact": { "percent": "-18.91" },
"totalImpact": { "percent": "-19.06" },
"expandedPriceImpact": {
"swap": { "usd": "0" }
}
}
}
Quote returns steps and token amounts look fine. The routes themselves seem mostly OK: for the same input size, the output amounts we get from Relay are in line with what we see on other DEX UIs (e.g. Phantom) for the same pair. So the execution side looks reasonable; it's the reported impact / USD pricing that looks wrong
A few things we saw:
- About a 19%
swapImpact on a 0.01 ETH buy, same ballpark from 0.001 to 0.1 ETH
- EVE
amountUsd implies ~$0.000003/token across those sizes; DexScreener was ~$0.000003659 when I checked
swapImpact roughly matches (outUsd - inUsd) / inUsdexpandedPriceImpact.swap.usd was 0 on the quotes we looked at- 10 ETH buy failed with
SWAP_IMPACT_TOO_HIGH; overridePriceImpact: true returned a quote
We're using overridePriceImpact: true as a workaround for now.
The token amounts in the quote look reasonable, but the USD fields do not. For this example, currencyOut.amountUsd values EVE at ~$0.000003/token while DexScreener showed $0.000003659 at the same time. That gap shows up directly in swapImpact (-19% on a 0.01 ETH buy), and larger sizes hit SWAP_IMPACT_TOO_HIGH.
So from our side this looks like a bad USD price in the quote response (or something upstream of amountUsd / swapImpact), not a real liquidity problem. We'd like to understand what price source feeds those fields and when you expect them to be fixed, since we can't rely on swapImpact or amountUsd for these tokens today.
Can share more tokens / request IDs if helpful.
We're seeing strange swapImpact / amountUsd values from
/quote/v2on same-chain EVM swaps, mostly on newer low-cap tokens (often Bankr launches on Base). Doesn't seem limited to one asset.Example below uses EVE on Base (0xe7d192e52fa418236d6eecf7d5eb38da9dd11ba3) for reproduction purpose.
Request
Response snippet
Quote returns steps and token amounts look fine. The routes themselves seem mostly OK: for the same input size, the output amounts we get from Relay are in line with what we see on other DEX UIs (e.g. Phantom) for the same pair. So the execution side looks reasonable; it's the reported impact / USD pricing that looks wrong
A few things we saw:
swapImpacton a 0.01 ETH buy, same ballpark from 0.001 to 0.1 ETHamountUsdimplies ~$0.000003/token across those sizes; DexScreener was ~$0.000003659 when I checkedswapImpactroughly matches (outUsd - inUsd) / inUsdexpandedPriceImpact.swap.usdwas 0 on the quotes we looked atSWAP_IMPACT_TOO_HIGH;overridePriceImpact: truereturned a quoteWe're using
overridePriceImpact: trueas a workaround for now.The token amounts in the quote look reasonable, but the USD fields do not. For this example,
currencyOut.amountUsdvalues EVE at ~$0.000003/token while DexScreener showed $0.000003659 at the same time. That gap shows up directly in swapImpact (-19% on a 0.01 ETH buy), and larger sizes hitSWAP_IMPACT_TOO_HIGH.So from our side this looks like a bad USD price in the quote response (or something upstream of
amountUsd / swapImpact), not a real liquidity problem. We'd like to understand what price source feeds those fields and when you expect them to be fixed, since we can't rely onswapImpactoramountUsdfor these tokens today.Can share more tokens / request IDs if helpful.