Description
When eth_call is invoked with a maxFeePerGas (or gasPrice) that is lower than the
current block's base fee, Nethermind returns a vague error message "miner premium is negative"
instead of the descriptive Geth-style message that includes the address, the provided fee cap,
and the actual base fee. This makes it harder for callers to understand why the call failed.
Steps to Reproduce
// test_02 — block 0xD59F7F (baseFee ~146.3 gwei)
{
"jsonrpc": "2.0",
"method": "eth_call",
"params": [
{
"from": "0xd3181ddbB2CEA7B4954b8D4a05DBf85D8Fc36aef",
"to": "0xe3782B8688ad2b0D5ba42842d400F7AdF310F88d",
"gas": "0xDDD2",
"gasPrice": "0x2098A67800",
"value": "0x0",
"data": "0xf242432a..."
},
"0xD59F7F"
],
"id": 1
}Expected (Geth)
{
"error": {
"code": -32000,
"message": "err: max fee per gas less than block base fee: address 0xd3181ddbB2CEA7B4954b8D4a05DBf85D8Fc36aEF, maxFeePerGas: 140000000000, baseFee: 146283608928 (supplied gas 56786)"
}
}Actual (Nethermind)
{
"error": {
"code": -32000,
"message": "miner premium is negative"
}
}Notes
Same issue reproduces on test_18 with maxFeePerGas: 50 gwei against a block with
baseFee: ~61.5 gwei. The error code -32000 is correct — only the message text differs.
Description
When
eth_callis invoked with amaxFeePerGas(orgasPrice) that is lower than thecurrent block's base fee, Nethermind returns a vague error message
"miner premium is negative"instead of the descriptive Geth-style message that includes the address, the provided fee cap,
and the actual base fee. This makes it harder for callers to understand why the call failed.
Steps to Reproduce
Expected (Geth)
{ "error": { "code": -32000, "message": "err: max fee per gas less than block base fee: address 0xd3181ddbB2CEA7B4954b8D4a05DBf85D8Fc36aEF, maxFeePerGas: 140000000000, baseFee: 146283608928 (supplied gas 56786)" } }Actual (Nethermind)
{ "error": { "code": -32000, "message": "miner premium is negative" } }Notes
Same issue reproduces on test_18 with
maxFeePerGas: 50 gweiagainst a block withbaseFee: ~61.5 gwei. The error code-32000is correct — only the message text differs.