diff --git a/core/types/bid.go b/core/types/bid.go
index e65ab0f00..d2b9a073f 100644
--- a/core/types/bid.go
+++ b/core/types/bid.go
@@ -193,5 +193,7 @@ type MevParams struct {
 	ValidatorCommission   uint64 // 100 means 1%
 	BidSimulationLeftOver time.Duration
 	GasCeil               uint64
+	GasPrice              *big.Int // Minimum avg gas price for bid block
 	BuilderFeeCeil        *big.Int
+	Version               string
 }
diff --git a/eth/api_backend.go b/eth/api_backend.go
index 840824039..ae698ade3 100644
--- a/eth/api_backend.go
+++ b/eth/api_backend.go
@@ -484,6 +484,10 @@ func (b *EthAPIBackend) RemoveBuilder(builder common.Address) error {
 	return b.Miner().RemoveBuilder(builder)
 }
 
+func (b *EthAPIBackend) HasBuilder(builder common.Address) bool {
+	return b.Miner().HasBuilder(builder)
+}
+
 func (b *EthAPIBackend) SendBid(ctx context.Context, bid *types.BidArgs) (common.Hash, error) {
 	return b.Miner().SendBid(ctx, bid)
 }
diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index 521add7e9..60879ce27 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -752,6 +752,13 @@ func (ec *Client) MevRunning(ctx context.Context) (bool, error) {
 	return result, err
 }
 
+// HasBuilder returns whether the builder is registered
+func (ec *Client) HasBuilder(ctx context.Context, address common.Address) (bool, error) {
+	var result bool
+	err := ec.c.CallContext(ctx, &result, "mev_hasBuilder", address)
+	return result, err
+}
+
 // SendBid sends a bid
 func (ec *Client) SendBid(ctx context.Context, args types.BidArgs) (common.Hash, error) {
 	var hash common.Hash
diff --git a/internal/ethapi/api_mev.go b/internal/ethapi/api_mev.go
index 057b6a3dc..1f2331f99 100644
--- a/internal/ethapi/api_mev.go
+++ b/internal/ethapi/api_mev.go
@@ -87,6 +87,10 @@ func (m *MevAPI) Params() *types.MevParams {
 	return m.b.MevParams()
 }
 
+func (m *MevAPI) HasBuilder(builder common.Address) bool {
+	return m.b.HasBuilder(builder)
+}
+
 // Running returns true if mev is running
 func (m *MevAPI) Running() bool {
 	return m.b.MevRunning()
diff --git a/internal/ethapi/api_test.go b/internal/ethapi/api_test.go
index d1c05797f..8764f51fb 100644
--- a/internal/ethapi/api_test.go
+++ b/internal/ethapi/api_test.go
@@ -650,7 +650,8 @@ func (b testBackend) ServiceFilter(ctx context.Context, session *bloombits.Match
 	panic("implement me")
 }
 
-func (b *testBackend) MevRunning() bool { return false }
+func (b *testBackend) MevRunning() bool                       { return false }
+func (b *testBackend) HasBuilder(builder common.Address) bool { return false }
 func (b *testBackend) MevParams() *types.MevParams {
 	return &types.MevParams{}
 }
diff --git a/internal/ethapi/backend.go b/internal/ethapi/backend.go
index 114f61fb1..fd778a3f6 100644
--- a/internal/ethapi/backend.go
+++ b/internal/ethapi/backend.go
@@ -115,6 +115,8 @@ type Backend interface {
 	AddBuilder(builder common.Address, builderUrl string) error
 	// RemoveBuilder removes a builder from the bid simulator.
 	RemoveBuilder(builder common.Address) error
+	// HasBuilder returns true if the builder is in the builder list.
+	HasBuilder(builder common.Address) bool
 	// SendBid receives bid from the builders.
 	SendBid(ctx context.Context, bid *types.BidArgs) (common.Hash, error)
 	// BestBidGasFee returns the gas fee of the best bid for the given parent hash.
diff --git a/internal/ethapi/transaction_args_test.go b/internal/ethapi/transaction_args_test.go
index 9079743ba..a4b758acf 100644
--- a/internal/ethapi/transaction_args_test.go
+++ b/internal/ethapi/transaction_args_test.go
@@ -416,7 +416,8 @@ func (b *backendMock) SubscribeRemovedLogsEvent(ch chan<- core.RemovedLogsEvent)
 
 func (b *backendMock) Engine() consensus.Engine { return nil }
 
-func (b *backendMock) MevRunning() bool { return false }
+func (b *backendMock) MevRunning() bool                       { return false }
+func (b *backendMock) HasBuilder(builder common.Address) bool { return false }
 func (b *backendMock) MevParams() *types.MevParams {
 	return &types.MevParams{}
 }
diff --git a/miner/miner_mev.go b/miner/miner_mev.go
index f4ced7f8d..4622cf640 100644
--- a/miner/miner_mev.go
+++ b/miner/miner_mev.go
@@ -9,6 +9,7 @@ import (
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/types"
 	"github.com/ethereum/go-ethereum/log"
+	"github.com/ethereum/go-ethereum/params"
 )
 
 type BuilderConfig struct {
@@ -59,6 +60,11 @@ func (miner *Miner) RemoveBuilder(builderAddr common.Address) error {
 	return miner.bidSimulator.RemoveBuilder(builderAddr)
 }
 
+// HasBuilder returns true if the builder is in the builder list.
+func (miner *Miner) HasBuilder(builder common.Address) bool {
+	return miner.bidSimulator.ExistBuilder(builder)
+}
+
 func (miner *Miner) SendBid(ctx context.Context, bidArgs *types.BidArgs) (common.Hash, error) {
 	builder, err := bidArgs.EcrecoverSender()
 	if err != nil {
@@ -117,6 +123,8 @@ func (miner *Miner) MevParams() *types.MevParams {
 		ValidatorCommission:   miner.worker.config.Mev.ValidatorCommission,
 		BidSimulationLeftOver: miner.worker.config.Mev.BidSimulationLeftOver,
 		GasCeil:               miner.worker.config.GasCeil,
+		GasPrice:              miner.worker.config.GasPrice,
 		BuilderFeeCeil:        builderFeeCeil,
+		Version:               params.Version,
 	}
 }