Merge branch 'develop' into builder-boost-settings

Co-authored-by: Manu NALEPA <enalepa@offchainlabs.com>

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix.go

@@ -92,15 +92,16 @@ func setExecutionData(ctx context.Context, blk interfaces.SignedBeaconBlock, loc
 		// Use builder payload if the following in true:
 		// builder_bid_value * builderBoostFactor(default 100) > local_block_value * (local-block-value-boost + 100)
 		boost := params.BeaconConfig().LocalBlockValueBoost
-		higherValueBuilder := builderValueGwei*builderBoostFactor > localValueGwei*(100+boost)
+		if boost > 0 && builderBoostFactor > defaultBuilderBoostFactor {
-		if boost > 0 && builderBoostFactor != defaultBuilderBoostFactor {
 			log.WithFields(logrus.Fields{
 				"localGweiValue":       localValueGwei,
 				"localBoostPercentage": boost,
 				"builderGweiValue":     builderValueGwei,
 				"builderBoostFactor":   builderBoostFactor,
-			}).Warn("Proposer: both local boost and builder boost are using non default values")
+			}).Warn("Proposer: builder boost will be ignored, because local boost is activated and builder boost is above the default")
+			builderBoostFactor = defaultBuilderBoostFactor
 		}
+		higherValueBuilder := builderValueGwei*builderBoostFactor > localValueGwei*(100+boost)
 		builderValueGweiGauge.Set(float64(builderValueGwei))
 		localValueGweiGauge.Set(float64(localValueGwei))
 

beacon-chain/rpc/prysm/v1alpha1/validator/proposer_bellatrix_test.go

@@ -290,7 +290,7 @@ func TestServer_setExecutionData(t *testing.T) {
 		require.NoError(t, err)
 		require.Equal(t, uint64(2), e.BlockNumber()) // builder block
 	})
-	t.Run("Builder builder has higher value but forced to local payload with builder boost factor", func(t *testing.T) {
+	t.Run("Builder has higher value but forced to local payload with builder boost factor at 0", func(t *testing.T) {
 		blk, err := blocks.NewSignedBeaconBlock(util.NewBlindedBeaconBlockCapella())
 		require.NoError(t, err)
 		require.NoError(t, vs.BeaconDB.SaveRegistrationsByValidatorIDs(ctx, []primitives.ValidatorIndex{blk.Block().ProposerIndex()},
@@ -370,6 +370,23 @@ func TestServer_setExecutionData(t *testing.T) {
 
 		require.LogsContain(t, hook, "builderGweiValue=1 localBoostPercentage=0 localGweiValue=2")
 	})
+	t.Run("Builder configured. Local block has higher value even with higher builder boost factor", func(t *testing.T) {
+		blk, err := blocks.NewSignedBeaconBlock(util.NewBeaconBlockCapella())
+		require.NoError(t, err)
+		vs.ExecutionEngineCaller = &powtesting.EngineClient{PayloadIDBytes: id, ExecutionPayloadCapella: &v1.ExecutionPayloadCapella{BlockNumber: 3}, BlockValue: 2 * 1e9}
+		b := blk.Block()
+		localPayload, _, err := vs.getLocalPayload(ctx, b, capellaTransitionState)
+		require.NoError(t, err)
+		builderPayload, builderKzgCommitments, err := vs.getBuilderPayloadAndBlobs(ctx, b.Slot(), b.ProposerIndex())
+		require.NoError(t, err)
+		require.DeepEqual(t, [][]uint8(nil), builderKzgCommitments)
+		require.NoError(t, setExecutionData(context.Background(), blk, localPayload, builderPayload, builderKzgCommitments, 99999))
+		e, err := blk.Block().Body().Execution()
+		require.NoError(t, err)
+		require.Equal(t, uint64(3), e.BlockNumber()) // Local block
+
+		require.LogsContain(t, hook, "builderGweiValue=1 localBoostPercentage=0 localGweiValue=2")
+	})
 	t.Run("Builder configured. Local block and local boost has higher value", func(t *testing.T) {
 		cfg := params.BeaconConfig().Copy()
 		cfg.LocalBlockValueBoost = 1 // Boost 1%.

cmd/beacon-chain/flags/base.go

@@ -27,8 +27,8 @@ var (
 	// LocalBlockValueBoost sets a percentage boost for local block construction while using a custom builder.
 	LocalBlockValueBoost = &cli.Uint64Flag{
 		Name: "local-block-value-boost",
-		Usage: "A percentage boost for local block construction as a Uint64. This is used to prioritize local block construction over relay/builder block construction" +
+		Usage: "A percentage boost for local block construction as a Uint64. This is used to prioritize local block construction over relay/builder block construction. " +
-			"Boost is an additional percentage to multiple local block value. Use builder block if: builder_bid_value * 100 > local_block_value * (local-block-value-boost + 100)",
+			"Boost is an additional percentage to multiple local block value. Use builder block if: builder_value * builder-boost-factor > local_value * (local-block-value-boost + 100)",
 		Value: 10,
 	}
 	// ExecutionEngineEndpoint provides an HTTP access endpoint to connect to an execution client on the execution layer

cmd/validator/flags/flags.go

@@ -366,6 +366,14 @@ var (
 		Value: fmt.Sprint(params.BeaconConfig().DefaultBuilderGasLimit),
 	}
 
+	// BuilderBoostFactorFlag sets a multiplier for builder block construction as a Uint64.
+	BuilderBoostFactorFlag = &cli.Uint64Flag{
+		Name: "builder-boost-factor",
+		Usage: "A multiplier for builder block construction as a Uint64. This is used to prioritize relay/builder block construction over local block construction. " +
+			"Boost factor is a multiplier against the builder value. Use builder block if: builder_value * builder-boost-factor > local_value * (local-block-value-boost + 100)",
+		Value: 100,
+	}
+
 	// ValidatorsRegistrationBatchSizeFlag sets the maximum size for one batch of validator registrations. Use a non-positive value to disable batching.
 	ValidatorsRegistrationBatchSizeFlag = &cli.IntFlag{
 		Name:  "validators-registration-batch-size",

cmd/validator/main.go

@@ -83,6 +83,7 @@ var appFlags = []cli.Flag{
 	flags.ProposerSettingsFlag,
 	flags.EnableBuilderFlag,
 	flags.BuilderGasLimitFlag,
+	flags.BuilderBoostFactorFlag,
 	flags.ValidatorsRegistrationBatchSizeFlag,
 	////////////////////
 	cmd.DisableMonitoringFlag,

cmd/validator/usage.go

@@ -121,6 +121,7 @@ var appHelpFlagGroups = []flagGroup{
 			flags.SuggestedFeeRecipientFlag,
 			flags.EnableBuilderFlag,
 			flags.BuilderGasLimitFlag,
+			flags.BuilderBoostFactorFlag,
 			flags.ValidatorsRegistrationBatchSizeFlag,
 			flags.EnableDistributed,
 		},

config/proposer/loader/loader.go

@@ -35,8 +35,9 @@ type settingsLoader struct {
 }
 
 type flagOptions struct {
-	builderConfig *proposer.BuilderConfig
+	builderConfig      *proposer.BuilderConfig
-	gasLimit      *validator.Uint64
+	gasLimit           *validator.Uint64
+	builderBoostFactor *uint64
 }
 
 // SettingsLoaderOption sets additional options that affect the proposer settings
@@ -74,6 +75,17 @@ func WithGasLimit() SettingsLoaderOption {
 	}
 }
 
+// WithBuilderBoostFactor applies the --builder-boost-factor flag to proposer settings
+func WithBuilderBoostFactor() SettingsLoaderOption {
+	return func(cliCtx *cli.Context, psl *settingsLoader) error {
+		if cliCtx.IsSet(flags.BuilderBoostFactorFlag.Name) {
+			bbf := cliCtx.Uint64(flags.BuilderBoostFactorFlag.Name)
+			psl.options.builderBoostFactor = &bbf
+		}
+		return nil
+	}
+}
+
 // NewProposerSettingsLoader returns a new proposer settings loader that can process the proposer settings based on flag options
 func NewProposerSettingsLoader(cliCtx *cli.Context, db iface.ValidatorDB, opts ...SettingsLoaderOption) (*settingsLoader, error) {
 	if cliCtx.IsSet(flags.ProposerSettingsFlag.Name) && cliCtx.IsSet(flags.ProposerSettingsURLFlag.Name) {
@@ -117,8 +129,11 @@ func (psl *settingsLoader) Load(cliCtx *cli.Context) (*proposer.Settings, error)
 	loadConfig := &validatorpb.ProposerSettingsPayload{}
 
 	// override settings based on other options
-	if psl.options.builderConfig != nil && psl.options.gasLimit != nil {
+	if psl.options != nil && psl.options.builderConfig != nil {
-		psl.options.builderConfig.GasLimit = *psl.options.gasLimit
+		if psl.options.gasLimit != nil {
+			psl.options.builderConfig.GasLimit = *psl.options.gasLimit
+		}
+		psl.options.builderConfig.BuilderBoostFactor = psl.options.builderBoostFactor
 	}
 
 	// check if database has settings already
@@ -205,20 +220,8 @@ func (psl *settingsLoader) processProposerSettings(loadedSettings, dbSettings *v
 	// loaded settings have higher priority than db settings
 	newSettings := &validatorpb.ProposerSettingsPayload{}
 
-	var builderConfig *validatorpb.BuilderConfig
-	var gasLimitOnly *validator.Uint64
-
-	if psl.options != nil {
-		if psl.options.builderConfig != nil {
-			builderConfig = psl.options.builderConfig.ToConsensus()
-		}
-		if psl.options.gasLimit != nil {
-			gasLimitOnly = psl.options.gasLimit
-		}
-	}
-
 	if dbSettings != nil && dbSettings.DefaultConfig != nil {
-		if builderConfig == nil {
+		if psl.options == nil || psl.options.builderConfig == nil {
 			dbSettings.DefaultConfig.Builder = nil
 		}
 		newSettings.DefaultConfig = dbSettings.DefaultConfig
@@ -229,12 +232,12 @@ func (psl *settingsLoader) processProposerSettings(loadedSettings, dbSettings *v
 
 	// process any builder overrides on defaults
 	if newSettings.DefaultConfig != nil {
-		newSettings.DefaultConfig.Builder = processBuilderConfig(newSettings.DefaultConfig.Builder, builderConfig, gasLimitOnly)
+		newSettings.DefaultConfig.Builder = processBuilderConfig(newSettings.DefaultConfig.Builder, psl.options)
 	}
 
 	if dbSettings != nil && len(dbSettings.ProposerConfig) != 0 {
 		for _, option := range dbSettings.ProposerConfig {
-			if builderConfig == nil {
+			if psl.options == nil || psl.options.builderConfig == nil {
 				option.Builder = nil
 			}
 		}
@@ -247,7 +250,7 @@ func (psl *settingsLoader) processProposerSettings(loadedSettings, dbSettings *v
 	// process any overrides for proposer config
 	for _, option := range newSettings.ProposerConfig {
 		if option != nil {
-			option.Builder = processBuilderConfig(option.Builder, builderConfig, gasLimitOnly)
+			option.Builder = processBuilderConfig(option.Builder, psl.options)
 		}
 	}
 
@@ -259,18 +262,38 @@ func (psl *settingsLoader) processProposerSettings(loadedSettings, dbSettings *v
 	return newSettings
 }
 
-func processBuilderConfig(current *validatorpb.BuilderConfig, override *validatorpb.BuilderConfig, gasLimitOnly *validator.Uint64) *validatorpb.BuilderConfig {
+func processBuilderConfig(current *validatorpb.BuilderConfig, options *flagOptions) *validatorpb.BuilderConfig {
-	if current != nil {
+	// If there are no options, return what was passed in
-		current.GasLimit = reviewGasLimit(current.GasLimit)
+	if options == nil {
-		if override != nil {
-			current.Enabled = override.Enabled
-		}
-		if gasLimitOnly != nil {
-			current.GasLimit = *gasLimitOnly
-		}
 		return current
 	}
-	return override
+
+	// Initialize an override variable
+	var override *validatorpb.BuilderConfig
+	if options.builderConfig != nil {
+		// Convert the builder config to consensus form if it exists
+		override = options.builderConfig.ToConsensus()
+	}
+	// If there's nothing to process further, return the override or current based on what's available
+	if current == nil {
+		return override
+	}
+
+	if override != nil {
+		current.Enabled = override.Enabled
+	}
+
+	if options.gasLimit != nil {
+		current.GasLimit = *options.gasLimit
+	}
+
+	current.GasLimit = reviewGasLimit(current.GasLimit)
+
+	if options.builderBoostFactor != nil {
+		current.BuilderBoostFactor = options.builderBoostFactor
+	}
+
+	return current
 }
 
 func reviewGasLimit(gasLimit validator.Uint64) validator.Uint64 {

config/proposer/loader/loader_test.go

@@ -26,12 +26,14 @@ import (
 )
 
 func TestProposerSettingsLoader(t *testing.T) {
+	bbf := uint64(100)
 	hook := logtest.NewGlobal()
 	type proposerSettingsFlag struct {
-		dir        string
+		dir                string
-		url        string
+		url                string
-		defaultfee string
+		defaultfee         string
-		defaultgas string
+		defaultgas         string
+		builderBoostFactor *uint64
 	}
 
 	type args struct {
@@ -49,6 +51,200 @@ func TestProposerSettingsLoader(t *testing.T) {
 		validatorRegistrationEnabled bool
 		skipDBSavedCheck             bool
 	}{
+		{
+			name: "builder boost factor set in proposer settings",
+			args: args{
+				proposerSettingsFlagValues: &proposerSettingsFlag{
+					dir:        "./testdata/good-prepare-beacon-proposer-with-builder-boost-config.yaml",
+					url:        "",
+					defaultfee: "",
+				},
+			},
+			want: func() *proposer.Settings {
+				key1, err := hexutil.Decode("0xa057816155ad77931185101128655c0191bd0214c201ca48ed887f6c4c6adf334070efcd75140eada5ac83a92506dd7a")
+				require.NoError(t, err)
+				tempBBF := uint64(90)
+				return &proposer.Settings{
+					ProposeConfig: map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option{
+						bytesutil.ToBytes48(key1): {
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								GasLimit:           40000000,
+								BuilderBoostFactor: &tempBBF,
+							},
+						},
+					},
+					DefaultConfig: &proposer.Option{
+						FeeRecipientConfig: &proposer.FeeRecipientConfig{
+							FeeRecipient: common.HexToAddress("0x6e35733c5af9B61374A128e6F85f553aF09ff89A"),
+						},
+						BuilderConfig: &proposer.BuilderConfig{
+							Enabled:  false,
+							GasLimit: validator.Uint64(params.BeaconConfig().DefaultBuilderGasLimit),
+						},
+					},
+				}
+			},
+			withdb: func(db iface.ValidatorDB) error {
+				key1, err := hexutil.Decode("0xa057816155ad77931185101128655c0191bd0214c201ca48ed887f6c4c6adf334070efcd75140eada5ac83a92506dd7a")
+				require.NoError(t, err)
+				tempBBF := uint64(90)
+				settings := &proposer.Settings{
+					ProposeConfig: map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option{
+						bytesutil.ToBytes48(key1): {
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								GasLimit:           40000000,
+								BuilderBoostFactor: &tempBBF,
+							},
+						},
+					},
+					DefaultConfig: &proposer.Option{
+						FeeRecipientConfig: &proposer.FeeRecipientConfig{
+							FeeRecipient: common.HexToAddress("0x6e35733c5af9B61374A128e6F85f553aF09ff89A"),
+						},
+						BuilderConfig: &proposer.BuilderConfig{
+							Enabled:  false,
+							GasLimit: validator.Uint64(params.BeaconConfig().DefaultBuilderGasLimit),
+						},
+					},
+				}
+				return db.SaveProposerSettings(context.Background(), settings)
+			},
+		},
+		{
+			name: "builder boost factor flag set with proposer settings file",
+			args: args{
+				proposerSettingsFlagValues: &proposerSettingsFlag{
+					dir:                "./testdata/good-prepare-beacon-proposer-config.yaml",
+					url:                "",
+					defaultfee:         "",
+					builderBoostFactor: &bbf,
+				},
+			},
+			want: func() *proposer.Settings {
+				key1, err := hexutil.Decode("0xa057816155ad77931185101128655c0191bd0214c201ca48ed887f6c4c6adf334070efcd75140eada5ac83a92506dd7a")
+				require.NoError(t, err)
+				return &proposer.Settings{
+					ProposeConfig: map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option{
+						bytesutil.ToBytes48(key1): {
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								GasLimit:           40000000,
+								BuilderBoostFactor: &bbf,
+							},
+						},
+					},
+					DefaultConfig: &proposer.Option{
+						FeeRecipientConfig: &proposer.FeeRecipientConfig{
+							FeeRecipient: common.HexToAddress("0x6e35733c5af9B61374A128e6F85f553aF09ff89A"),
+						},
+						BuilderConfig: &proposer.BuilderConfig{
+							Enabled:            false,
+							GasLimit:           validator.Uint64(params.BeaconConfig().DefaultBuilderGasLimit),
+							BuilderBoostFactor: &bbf,
+						},
+					},
+				}
+			},
+			withdb: func(db iface.ValidatorDB) error {
+				key1, err := hexutil.Decode("0xa057816155ad77931185101128655c0191bd0214c201ca48ed887f6c4c6adf334070efcd75140eada5ac83a92506dd7a")
+				require.NoError(t, err)
+				settings := &proposer.Settings{
+					ProposeConfig: map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option{
+						bytesutil.ToBytes48(key1): {
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								GasLimit:           40000000,
+								BuilderBoostFactor: &bbf,
+							},
+						},
+					},
+					DefaultConfig: &proposer.Option{
+						FeeRecipientConfig: &proposer.FeeRecipientConfig{
+							FeeRecipient: common.HexToAddress("0x6e35733c5af9B61374A128e6F85f553aF09ff89A"),
+						},
+						BuilderConfig: &proposer.BuilderConfig{
+							Enabled:            false,
+							GasLimit:           validator.Uint64(params.BeaconConfig().DefaultBuilderGasLimit),
+							BuilderBoostFactor: &bbf,
+						},
+					},
+				}
+				return db.SaveProposerSettings(context.Background(), settings)
+			},
+		},
+		{
+			name: "builder boost factor set from flag happy path",
+			args: args{
+				proposerSettingsFlagValues: &proposerSettingsFlag{
+					dir:                "",
+					url:                "",
+					defaultfee:         "0x6e35733c5af9B61374A128e6F85f553aF09ff89A",
+					builderBoostFactor: &bbf,
+				},
+			},
+			want: func() *proposer.Settings {
+				return &proposer.Settings{
+					ProposeConfig: nil,
+					DefaultConfig: &proposer.Option{
+						FeeRecipientConfig: &proposer.FeeRecipientConfig{
+							FeeRecipient: common.HexToAddress("0x6e35733c5af9B61374A128e6F85f553aF09ff89A"),
+						},
+						BuilderConfig: &proposer.BuilderConfig{
+							Enabled:            true,
+							GasLimit:           validator.Uint64(30000000),
+							BuilderBoostFactor: &bbf,
+						},
+					},
+				}
+			},
+			withdb: func(db iface.ValidatorDB) error {
+				settings := &proposer.Settings{
+					ProposeConfig: nil,
+					DefaultConfig: &proposer.Option{
+						FeeRecipientConfig: &proposer.FeeRecipientConfig{
+							FeeRecipient: common.HexToAddress("0x6e35733c5af9B61374A128e6F85f553aF09ff89A"),
+						},
+						BuilderConfig: &proposer.BuilderConfig{
+							Enabled:            true,
+							GasLimit:           validator.Uint64(30000000),
+							BuilderBoostFactor: &bbf,
+						},
+					},
+				}
+				return db.SaveProposerSettings(context.Background(), settings)
+			},
+			validatorRegistrationEnabled: true,
+		},
+		{
+			name: "builder boost factor set without builder enabled",
+			args: args{
+				proposerSettingsFlagValues: &proposerSettingsFlag{
+					dir:                "",
+					url:                "",
+					defaultfee:         "",
+					builderBoostFactor: &bbf,
+				},
+			},
+			want: func() *proposer.Settings {
+				return nil
+			},
+			wantLog:          "No proposer settings were provided",
+			skipDBSavedCheck: true,
+		},
 		{
 			name: "graffiti in db without fee recipient",
 			args: args{
@@ -926,6 +1122,10 @@ func TestProposerSettingsLoader(t *testing.T) {
 					set.String(flags.BuilderGasLimitFlag.Name, tt.args.proposerSettingsFlagValues.defaultgas, "")
 					require.NoError(t, set.Set(flags.BuilderGasLimitFlag.Name, tt.args.proposerSettingsFlagValues.defaultgas))
 				}
+				if tt.args.proposerSettingsFlagValues.builderBoostFactor != nil {
+					set.Uint64(flags.BuilderBoostFactorFlag.Name, uint64(*tt.args.proposerSettingsFlagValues.builderBoostFactor), "")
+					require.NoError(t, set.Set(flags.BuilderBoostFactorFlag.Name, fmt.Sprintf("%d", *tt.args.proposerSettingsFlagValues.builderBoostFactor)))
+				}
 				if tt.validatorRegistrationEnabled {
 					set.Bool(flags.EnableBuilderFlag.Name, true, "")
 				}
@@ -940,6 +1140,7 @@ func TestProposerSettingsLoader(t *testing.T) {
 					validatorDB,
 					WithBuilderConfig(),
 					WithGasLimit(),
+					WithBuilderBoostFactor(),
 				)
 				if tt.wantInitErr != "" {
 					require.ErrorContains(t, tt.wantInitErr, err)

config/proposer/loader/testdata/good-prepare-beacon-proposer-with-builder-boost-config.yaml

@@ -0,0 +1,13 @@
+---
+proposer_config:
+  '0xa057816155ad77931185101128655c0191bd0214c201ca48ed887f6c4c6adf334070efcd75140eada5ac83a92506dd7a':
+    fee_recipient: '0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3'
+    builder:
+      enabled: true
+      gas_limit: 40000000
+      builder_boost_factor: 90
+default_config:
+  fee_recipient: '0x6e35733c5af9B61374A128e6F85f553aF09ff89A'
+  builder:
+    enabled: false
+    gas_limit: '30000000'

config/proposer/settings.go

@@ -79,9 +79,10 @@ func verifyOption(key string, option *validatorpb.ProposerOptionPayload) error {
 // BuilderConfig is the struct representation of the JSON config file set in the validator through the CLI.
 // GasLimit is a number set to help the network decide on the maximum gas in each block.
 type BuilderConfig struct {
-	Enabled  bool             `json:"enabled" yaml:"enabled"`
+	Enabled            bool             `json:"enabled" yaml:"enabled"`
-	GasLimit validator.Uint64 `json:"gas_limit,omitempty" yaml:"gas_limit,omitempty"`
+	GasLimit           validator.Uint64 `json:"gas_limit,omitempty" yaml:"gas_limit,omitempty"`
-	Relays   []string         `json:"relays,omitempty" yaml:"relays,omitempty"`
+	Relays             []string         `json:"relays,omitempty" yaml:"relays,omitempty"`
+	BuilderBoostFactor *uint64          `json:"builder_boost_factor,omitempty" yaml:"builder_boost_factor,omitempty"`
 }
 
 // BuilderConfigFromConsensus converts protobuf to a builder config used in in-memory storage
@@ -90,8 +91,9 @@ func BuilderConfigFromConsensus(from *validatorpb.BuilderConfig) *BuilderConfig
 		return nil
 	}
 	c := &BuilderConfig{
-		Enabled:  from.Enabled,
+		Enabled:            from.Enabled,
-		GasLimit: from.GasLimit,
+		GasLimit:           from.GasLimit,
+		BuilderBoostFactor: from.BuilderBoostFactor,
 	}
 	if from.Relays != nil {
 		relays := make([]string, len(from.Relays))
@@ -221,16 +223,18 @@ func (bc *BuilderConfig) Clone() *BuilderConfig {
 	if bc == nil {
 		return nil
 	}
-	c := &BuilderConfig{}
-	c.Enabled = bc.Enabled
-	c.GasLimit = bc.GasLimit
 	var relays []string
 	if bc.Relays != nil {
 		relays = make([]string, len(bc.Relays))
 		copy(relays, bc.Relays)
-		c.Relays = relays
 	}
-	return c
+
+	return &BuilderConfig{
+		Enabled:            bc.Enabled,
+		GasLimit:           bc.GasLimit,
+		BuilderBoostFactor: bc.BuilderBoostFactor,
+		Relays:             relays,
+	}
 }
 
 // Clone creates a deep copy of graffiti config
@@ -246,14 +250,17 @@ func (bc *BuilderConfig) ToConsensus() *validatorpb.BuilderConfig {
 	if bc == nil {
 		return nil
 	}
-	c := &validatorpb.BuilderConfig{}
+
-	c.Enabled = bc.Enabled
 	var relays []string
 	if bc.Relays != nil {
 		relays = make([]string, len(bc.Relays))
 		copy(relays, bc.Relays)
-		c.Relays = relays
 	}
-	c.GasLimit = bc.GasLimit
+
-	return c
+	return &validatorpb.BuilderConfig{
+		Enabled:            bc.Enabled,
+		GasLimit:           bc.GasLimit,
+		Relays:             relays,
+		BuilderBoostFactor: bc.BuilderBoostFactor,
+	}
 }

config/proposer/settings_test.go

@@ -16,6 +16,7 @@ func Test_Proposer_Setting_Cloning(t *testing.T) {
 	key1hex := "0xa057816155ad77931185101128655c0191bd0214c201ca48ed887f6c4c6adf334070efcd75140eada5ac83a92506dd7a"
 	key1, err := hexutil.Decode(key1hex)
 	require.NoError(t, err)
+	bbf := uint64(100)
 	settings := &Settings{
 		ProposeConfig: map[[fieldparams.BLSPubkeyLength]byte]*Option{
 			bytesutil.ToBytes48(key1): {
@@ -23,9 +24,10 @@ func Test_Proposer_Setting_Cloning(t *testing.T) {
 					FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
 				},
 				BuilderConfig: &BuilderConfig{
-					Enabled:  true,
+					Enabled:            true,
-					GasLimit: validator.Uint64(40000000),
+					GasLimit:           validator.Uint64(40000000),
-					Relays:   []string{"https://example-relay.com"},
+					Relays:             []string{"https://example-relay.com"},
+					BuilderBoostFactor: &bbf,
 				},
 			},
 		},
@@ -34,9 +36,10 @@ func Test_Proposer_Setting_Cloning(t *testing.T) {
 				FeeRecipient: common.HexToAddress("0x6e35733c5af9B61374A128e6F85f553aF09ff89A"),
 			},
 			BuilderConfig: &BuilderConfig{
-				Enabled:  false,
+				Enabled:            false,
-				GasLimit: validator.Uint64(params.BeaconConfig().DefaultBuilderGasLimit),
+				GasLimit:           validator.Uint64(params.BeaconConfig().DefaultBuilderGasLimit),
-				Relays:   []string{"https://example-relay.com"},
+				Relays:             []string{"https://example-relay.com"},
+				BuilderBoostFactor: &bbf,
 			},
 		},
 	}
@@ -57,6 +60,8 @@ func Test_Proposer_Setting_Cloning(t *testing.T) {
 		require.DeepEqual(t, settings.DefaultConfig.BuilderConfig, clone)
 		settings.DefaultConfig.BuilderConfig.GasLimit = 1
 		require.NotEqual(t, settings.DefaultConfig.BuilderConfig.GasLimit, clone.GasLimit)
+		settings.DefaultConfig.BuilderConfig.BuilderBoostFactor = nil
+		require.NotEqual(t, settings.DefaultConfig.BuilderConfig.BuilderBoostFactor, clone.BuilderBoostFactor)
 	})
 
 	t.Run("Happy Path BuilderConfigFromConsensus", func(t *testing.T) {
@@ -84,6 +89,7 @@ func Test_Proposer_Setting_Cloning(t *testing.T) {
 		require.Equal(t, option.FeeRecipientConfig.FeeRecipient.Hex(), noption.FeeRecipientConfig.FeeRecipient.Hex())
 		require.Equal(t, option.BuilderConfig.GasLimit, option.BuilderConfig.GasLimit)
 		require.Equal(t, option.BuilderConfig.Enabled, option.BuilderConfig.Enabled)
+		require.Equal(t, option.BuilderConfig.BuilderBoostFactor, option.BuilderConfig.BuilderBoostFactor)
 	})
 }
 
@@ -91,6 +97,7 @@ func TestProposerSettings_ShouldBeSaved(t *testing.T) {
 	key1hex := "0xa057816155ad77931185101128655c0191bd0214c201ca48ed887f6c4c6adf334070efcd75140eada5ac83a92506dd7a"
 	key1, err := hexutil.Decode(key1hex)
 	require.NoError(t, err)
+	bbf := uint64(100)
 	type fields struct {
 		ProposeConfig map[[fieldparams.BLSPubkeyLength]byte]*Option
 		DefaultConfig *Option
@@ -109,9 +116,10 @@ func TestProposerSettings_ShouldBeSaved(t *testing.T) {
 							FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
 						},
 						BuilderConfig: &BuilderConfig{
-							Enabled:  true,
+							Enabled:            true,
-							GasLimit: validator.Uint64(40000000),
+							GasLimit:           validator.Uint64(40000000),
-							Relays:   []string{"https://example-relay.com"},
+							Relays:             []string{"https://example-relay.com"},
+							BuilderBoostFactor: &bbf,
 						},
 					},
 				},
@@ -128,9 +136,10 @@ func TestProposerSettings_ShouldBeSaved(t *testing.T) {
 						FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
 					},
 					BuilderConfig: &BuilderConfig{
-						Enabled:  true,
+						Enabled:            true,
-						GasLimit: validator.Uint64(40000000),
+						GasLimit:           validator.Uint64(40000000),
-						Relays:   []string{"https://example-relay.com"},
+						Relays:             []string{"https://example-relay.com"},
+						BuilderBoostFactor: &bbf,
 					},
 				},
 			},
@@ -145,9 +154,10 @@ func TestProposerSettings_ShouldBeSaved(t *testing.T) {
 							FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
 						},
 						BuilderConfig: &BuilderConfig{
-							Enabled:  true,
+							Enabled:            true,
-							GasLimit: validator.Uint64(40000000),
+							GasLimit:           validator.Uint64(40000000),
-							Relays:   []string{"https://example-relay.com"},
+							Relays:             []string{"https://example-relay.com"},
+							BuilderBoostFactor: &bbf,
 						},
 					},
 				},
@@ -156,9 +166,10 @@ func TestProposerSettings_ShouldBeSaved(t *testing.T) {
 						FeeRecipient: common.HexToAddress("0x50155530FCE8a85ec7055A5F8b2bE214B3DaeFd3"),
 					},
 					BuilderConfig: &BuilderConfig{
-						Enabled:  true,
+						Enabled:            true,
-						GasLimit: validator.Uint64(40000000),
+						GasLimit:           validator.Uint64(40000000),
-						Relays:   []string{"https://example-relay.com"},
+						Relays:             []string{"https://example-relay.com"},
+						BuilderBoostFactor: &bbf,
 					},
 				},
 			},
@@ -179,9 +190,10 @@ func TestProposerSettings_ShouldBeSaved(t *testing.T) {
 				ProposeConfig: nil,
 				DefaultConfig: &Option{
 					BuilderConfig: &BuilderConfig{
-						Enabled:  true,
+						Enabled:            true,
-						GasLimit: validator.Uint64(40000000),
+						GasLimit:           validator.Uint64(40000000),
-						Relays:   []string{"https://example-relay.com"},
+						Relays:             []string{"https://example-relay.com"},
+						BuilderBoostFactor: &bbf,
 					},
 				},
 			},

proto/prysm/v1alpha1/validator-client/keymanager.pb.go

@@ -16,7 +16,6 @@ import (
 	v1alpha1 "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	_ "google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 const (
@@ -524,9 +523,10 @@ type BuilderConfig struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Enabled  bool                                                               `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
+	Enabled            bool                                                               `protobuf:"varint,1,opt,name=enabled,proto3" json:"enabled,omitempty"`
-	GasLimit github_com_prysmaticlabs_prysm_v5_consensus_types_validator.Uint64 `protobuf:"varint,2,opt,name=gas_limit,json=gasLimit,proto3" json:"gas_limit,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v5/consensus-types/validator.Uint64"`
+	GasLimit           github_com_prysmaticlabs_prysm_v5_consensus_types_validator.Uint64 `protobuf:"varint,2,opt,name=gas_limit,json=gasLimit,proto3" json:"gas_limit,omitempty" cast-type:"github.com/prysmaticlabs/prysm/v5/consensus-types/validator.Uint64"`
-	Relays   []string                                                           `protobuf:"bytes,3,rep,name=relays,proto3" json:"relays,omitempty"`
+	Relays             []string                                                           `protobuf:"bytes,3,rep,name=relays,proto3" json:"relays,omitempty"`
+	BuilderBoostFactor *uint64                                                            `protobuf:"varint,4,opt,name=builder_boost_factor,json=builderBoostFactor,proto3,oneof" json:"builder_boost_factor,omitempty"`
 }
 
 func (x *BuilderConfig) Reset() {
@@ -582,6 +582,13 @@ func (x *BuilderConfig) GetRelays() []string {
 	return nil
 }
 
+func (x *BuilderConfig) GetBuilderBoostFactor() uint64 {
+	if x != nil && x.BuilderBoostFactor != nil {
+		return *x.BuilderBoostFactor
+	}
+	return 0
+}
+
 type ProposerSettingsPayload struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -645,9 +652,7 @@ var file_proto_prysm_v1alpha1_validator_client_keymanager_proto_rawDesc = []byte
 	0x2d, 0x63, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x2f, 0x6b, 0x65, 0x79, 0x6d, 0x61, 0x6e, 0x61, 0x67,
 	0x65, 0x72, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x1e, 0x65, 0x74, 0x68, 0x65, 0x72, 0x65,
 	0x75, 0x6d, 0x2e, 0x76, 0x61, 0x6c, 0x69, 0x64, 0x61, 0x74, 0x6f, 0x72, 0x2e, 0x61, 0x63, 0x63,
-	0x6f, 0x75, 0x6e, 0x74, 0x73, 0x2e, 0x76, 0x32, 0x1a, 0x1e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65,
+	0x6f, 0x75, 0x6e, 0x74, 0x73, 0x2e, 0x76, 0x32, 0x1a, 0x1b, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f,
-	0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2f, 0x77, 0x72, 0x61, 0x70, 0x70, 0x65,
-	0x72, 0x73, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x1b, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f,
 	0x65, 0x74, 0x68, 0x2f, 0x65, 0x78, 0x74, 0x2f, 0x6f, 0x70, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e,
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x1a, 0x26, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x70, 0x72, 0x79,
 	0x73, 0x6d, 0x2f, 0x76, 0x31, 0x61, 0x6c, 0x70, 0x68, 0x61, 0x31, 0x2f, 0x61, 0x74, 0x74, 0x65,
@@ -793,7 +798,7 @@ var file_proto_prysm_v1alpha1_validator_client_keymanager_proto_rawDesc = []byte
 	0x6e, 0x66, 0x69, 0x67, 0x52, 0x07, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x65, 0x72, 0x12, 0x1f, 0x0a,
 	0x08, 0x67, 0x72, 0x61, 0x66, 0x66, 0x69, 0x74, 0x69, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x48,
 	0x00, 0x52, 0x08, 0x67, 0x72, 0x61, 0x66, 0x66, 0x69, 0x74, 0x69, 0x88, 0x01, 0x01, 0x42, 0x0b,
-	0x0a, 0x09, 0x5f, 0x67, 0x72, 0x61, 0x66, 0x66, 0x69, 0x74, 0x69, 0x22, 0xa6, 0x01, 0x0a, 0x0d,
+	0x0a, 0x09, 0x5f, 0x67, 0x72, 0x61, 0x66, 0x66, 0x69, 0x74, 0x69, 0x22, 0xf6, 0x01, 0x0a, 0x0d,
 	0x42, 0x75, 0x69, 0x6c, 0x64, 0x65, 0x72, 0x43, 0x6f, 0x6e, 0x66, 0x69, 0x67, 0x12, 0x18, 0x0a,
 	0x07, 0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x08, 0x52, 0x07,
 	0x65, 0x6e, 0x61, 0x62, 0x6c, 0x65, 0x64, 0x12, 0x63, 0x0a, 0x09, 0x67, 0x61, 0x73, 0x5f, 0x6c,
@@ -804,7 +809,12 @@ var file_proto_prysm_v1alpha1_validator_client_keymanager_proto_rawDesc = []byte
 	0x73, 0x2f, 0x76, 0x61, 0x6c, 0x69, 0x64, 0x61, 0x74, 0x6f, 0x72, 0x2e, 0x55, 0x69, 0x6e, 0x74,
 	0x36, 0x34, 0x52, 0x08, 0x67, 0x61, 0x73, 0x4c, 0x69, 0x6d, 0x69, 0x74, 0x12, 0x16, 0x0a, 0x06,
 	0x72, 0x65, 0x6c, 0x61, 0x79, 0x73, 0x18, 0x03, 0x20, 0x03, 0x28, 0x09, 0x52, 0x06, 0x72, 0x65,
-	0x6c, 0x61, 0x79, 0x73, 0x22, 0xe7, 0x02, 0x0a, 0x17, 0x50, 0x72, 0x6f, 0x70, 0x6f, 0x73, 0x65,
+	0x6c, 0x61, 0x79, 0x73, 0x12, 0x35, 0x0a, 0x14, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x65, 0x72, 0x5f,
+	0x62, 0x6f, 0x6f, 0x73, 0x74, 0x5f, 0x66, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x18, 0x04, 0x20, 0x01,
+	0x28, 0x04, 0x48, 0x00, 0x52, 0x12, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x65, 0x72, 0x42, 0x6f, 0x6f,
+	0x73, 0x74, 0x46, 0x61, 0x63, 0x74, 0x6f, 0x72, 0x88, 0x01, 0x01, 0x42, 0x17, 0x0a, 0x15, 0x5f,
+	0x62, 0x75, 0x69, 0x6c, 0x64, 0x65, 0x72, 0x5f, 0x62, 0x6f, 0x6f, 0x73, 0x74, 0x5f, 0x66, 0x61,
+	0x63, 0x74, 0x6f, 0x72, 0x22, 0xe7, 0x02, 0x0a, 0x17, 0x50, 0x72, 0x6f, 0x70, 0x6f, 0x73, 0x65,
 	0x72, 0x53, 0x65, 0x74, 0x74, 0x69, 0x6e, 0x67, 0x73, 0x50, 0x61, 0x79, 0x6c, 0x6f, 0x61, 0x64,
 	0x12, 0x74, 0x0a, 0x0f, 0x70, 0x72, 0x6f, 0x70, 0x6f, 0x73, 0x65, 0x72, 0x5f, 0x63, 0x6f, 0x6e,
 	0x66, 0x69, 0x67, 0x18, 0x01, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x4b, 0x2e, 0x65, 0x74, 0x68, 0x65,
@@ -994,6 +1004,7 @@ func file_proto_prysm_v1alpha1_validator_client_keymanager_proto_init() {
 		(*SignRequest_BlindedBlockDeneb)(nil),
 	}
 	file_proto_prysm_v1alpha1_validator_client_keymanager_proto_msgTypes[2].OneofWrappers = []interface{}{}
+	file_proto_prysm_v1alpha1_validator_client_keymanager_proto_msgTypes[3].OneofWrappers = []interface{}{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{

proto/prysm/v1alpha1/validator-client/keymanager.proto

@@ -1,7 +1,6 @@
 syntax = "proto3";
 package ethereum.validator.accounts.v2;
 
-import "google/protobuf/wrappers.proto";
 import "proto/eth/ext/options.proto";
 import "proto/prysm/v1alpha1/attestation.proto";
 import "proto/prysm/v1alpha1/beacon_block.proto";
@@ -96,6 +95,7 @@ message BuilderConfig {
   bool enabled = 1;
   uint64 gas_limit = 2 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/prysm/v5/consensus-types/validator.Uint64"];
   repeated string relays = 3;
+  optional uint64 builder_boost_factor = 4;
 }
 
 // ProposerSettingsPayload is used to unmarshal files sent from the validator flag as well as safe to bolt db bucket

validator/client/BUILD.bazel

@@ -94,6 +94,7 @@ go_library(
         "@org_golang_google_grpc//status:go_default_library",
         "@org_golang_google_protobuf//proto:go_default_library",
         "@org_golang_google_protobuf//types/known/emptypb:go_default_library",
+        "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library",
     ],
 )
 
@@ -176,6 +177,7 @@ go_test(
         "@org_golang_google_grpc//metadata:go_default_library",
         "@org_golang_google_grpc//status:go_default_library",
         "@org_golang_google_protobuf//types/known/emptypb:go_default_library",
+        "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library",
         "@org_uber_go_mock//gomock:go_default_library",
     ],
 )

validator/client/beacon-api/BUILD.bazel

@@ -66,6 +66,7 @@ go_library(
         "@com_github_sirupsen_logrus//:go_default_library",
         "@org_golang_google_grpc//:go_default_library",
         "@org_golang_google_protobuf//types/known/timestamppb:go_default_library",
+        "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library",
         "@org_golang_x_sync//errgroup:go_default_library",
     ],
 )
@@ -139,6 +140,7 @@ go_test(
         "@com_github_pkg_errors//:go_default_library",
         "@org_golang_google_protobuf//types/known/emptypb:go_default_library",
         "@org_golang_google_protobuf//types/known/timestamppb:go_default_library",
+        "@org_golang_google_protobuf//types/known/wrapperspb:go_default_library",
         "@org_uber_go_mock//gomock:go_default_library",
     ],
 )

validator/client/beacon-api/beacon_api_validator_client.go

@@ -77,7 +77,7 @@ func (c *beaconApiValidatorClient) GetAttestationData(ctx context.Context, in *e
 
 func (c *beaconApiValidatorClient) GetBeaconBlock(ctx context.Context, in *ethpb.BlockRequest) (*ethpb.GenericBeaconBlock, error) {
 	return wrapInMetrics[*ethpb.GenericBeaconBlock]("GetBeaconBlock", func() (*ethpb.GenericBeaconBlock, error) {
-		return c.getBeaconBlock(ctx, in.Slot, in.RandaoReveal, in.Graffiti)
+		return c.getBeaconBlock(ctx, in.Slot, in.RandaoReveal, in.Graffiti, in.BuilderBoostFactor)
 	})
 }
 

validator/client/beacon-api/get_beacon_block.go

@@ -15,6 +15,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/network/httputil"
 	ethpb "github.com/prysmaticlabs/prysm/v5/proto/prysm/v1alpha1"
 	"github.com/prysmaticlabs/prysm/v5/runtime/version"
+	"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 type abstractProduceBlockResponseJson struct {
@@ -22,20 +23,26 @@ type abstractProduceBlockResponseJson struct {
 	Data    json.RawMessage `json:"data"`
 }
 
-func (c beaconApiValidatorClient) getBeaconBlock(ctx context.Context, slot primitives.Slot, randaoReveal []byte, graffiti []byte) (*ethpb.GenericBeaconBlock, error) {
+func buildGetBeaconBlockUrlValues(randaoReveal []byte, graffiti []byte, builderBoostFactor *wrapperspb.UInt64Value) neturl.Values {
 	queryParams := neturl.Values{}
+	if builderBoostFactor != nil {
+		queryParams.Add("builder_boost_factor", fmt.Sprint(builderBoostFactor.Value))
+	}
 	queryParams.Add("randao_reveal", hexutil.Encode(randaoReveal))
 	if len(graffiti) > 0 {
 		queryParams.Add("graffiti", hexutil.Encode(graffiti))
 	}
+	return queryParams
+}
 
+func (c beaconApiValidatorClient) getBeaconBlock(ctx context.Context, slot primitives.Slot, randaoReveal []byte, graffiti []byte, builderBoostFactor *wrapperspb.UInt64Value) (*ethpb.GenericBeaconBlock, error) {
 	var ver string
 	var blinded bool
 	var decoder *json.Decoder
 
 	// Try v3 endpoint first. If it's not supported, then we fall back to older endpoints.
 	// We try the blinded block endpoint first. If it fails, we assume that we got a full block and try the full block endpoint.
-	queryUrl := buildURL(fmt.Sprintf("/eth/v3/validator/blocks/%d", slot), queryParams)
+	queryUrl := buildURL(fmt.Sprintf("/eth/v3/validator/blocks/%d", slot), buildGetBeaconBlockUrlValues(randaoReveal, graffiti, builderBoostFactor))
 	produceBlockV3ResponseJson := structs.ProduceBlockV3Response{}
 	err := c.jsonRestHandler.Get(ctx, queryUrl, &produceBlockV3ResponseJson)
 	errJson := &httputil.DefaultJsonError{}
@@ -47,14 +54,14 @@ func (c beaconApiValidatorClient) getBeaconBlock(ctx context.Context, slot primi
 			return nil, errJson
 		}
 		log.Debug("Endpoint /eth/v3/validator/blocks is not supported, falling back to older endpoints for block proposal.")
-		fallbackResp, err := c.fallBackToBlinded(ctx, slot, queryParams)
+		fallbackResp, err := c.fallBackToBlinded(ctx, slot, buildGetBeaconBlockUrlValues(randaoReveal, graffiti, nil))
 		errJson = &httputil.DefaultJsonError{}
 		if err != nil {
 			if !errors.As(err, &errJson) {
 				return nil, err
 			}
 			log.Debug("Endpoint /eth/v1/validator/blinded_blocks failed to produce a blinded block, trying /eth/v2/validator/blocks.")
-			fallbackResp, err = c.fallBackToFull(ctx, slot, queryParams)
+			fallbackResp, err = c.fallBackToFull(ctx, slot, buildGetBeaconBlockUrlValues(randaoReveal, graffiti, nil))
 			if err != nil {
 				return nil, err
 			}

validator/client/beacon-api/get_beacon_block_test.go

@@ -18,6 +18,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/validator/client/beacon-api/mock"
 	test_helpers "github.com/prysmaticlabs/prysm/v5/validator/client/beacon-api/test-helpers"
 	"go.uber.org/mock/gomock"
+	"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 func TestGetBeaconBlock_RequestFailed(t *testing.T) {
@@ -36,7 +37,7 @@ func TestGetBeaconBlock_RequestFailed(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	_, err := validatorClient.getBeaconBlock(ctx, 1, []byte{1}, []byte{2})
+	_, err := validatorClient.getBeaconBlock(ctx, 1, []byte{1}, []byte{2}, nil)
 	assert.ErrorContains(t, "foo error", err)
 }
 
@@ -139,7 +140,7 @@ func TestGetBeaconBlock_Error(t *testing.T) {
 			).Times(1)
 
 			validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-			_, err := validatorClient.getBeaconBlock(ctx, 1, []byte{1}, []byte{2})
+			_, err := validatorClient.getBeaconBlock(ctx, 1, []byte{1}, []byte{2}, nil)
 			assert.ErrorContains(t, testCase.expectedErrorMessage, err)
 		})
 	}
@@ -175,7 +176,7 @@ func TestGetBeaconBlock_Phase0Valid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, nil)
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -218,7 +219,7 @@ func TestGetBeaconBlock_AltairValid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, nil)
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -262,7 +263,7 @@ func TestGetBeaconBlock_BellatrixValid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, nil)
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -307,7 +308,7 @@ func TestGetBeaconBlock_BlindedBellatrixValid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, nil)
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -352,7 +353,7 @@ func TestGetBeaconBlock_CapellaValid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, nil)
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -397,7 +398,7 @@ func TestGetBeaconBlock_BlindedCapellaValid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, nil)
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -442,7 +443,7 @@ func TestGetBeaconBlock_DenebValid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, nil)
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -473,7 +474,7 @@ func TestGetBeaconBlock_BlindedDenebValid(t *testing.T) {
 	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
 	jsonRestHandler.EXPECT().Get(
 		ctx,
-		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
+		fmt.Sprintf("/eth/v3/validator/blocks/%d?builder_boost_factor=%s&graffiti=%s&randao_reveal=%s", slot, "100", hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 		&structs.ProduceBlockV3Response{},
 	).SetArg(
 		2,
@@ -487,7 +488,7 @@ func TestGetBeaconBlock_BlindedDenebValid(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, &wrapperspb.UInt64Value{Value: 100})
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -518,7 +519,7 @@ func TestGetBeaconBlock_FallbackToBlindedBlock(t *testing.T) {
 	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
 	jsonRestHandler.EXPECT().Get(
 		ctx,
-		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
+		fmt.Sprintf("/eth/v3/validator/blocks/%d?builder_boost_factor=%s&graffiti=%s&randao_reveal=%s", slot, "100", hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 		&structs.ProduceBlockV3Response{},
 	).Return(
 		&httputil.DefaultJsonError{Code: http.StatusNotFound},
@@ -538,7 +539,7 @@ func TestGetBeaconBlock_FallbackToBlindedBlock(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, &wrapperspb.UInt64Value{Value: 100})
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{
@@ -569,7 +570,7 @@ func TestGetBeaconBlock_FallbackToFullBlock(t *testing.T) {
 	jsonRestHandler := mock.NewMockJsonRestHandler(ctrl)
 	jsonRestHandler.EXPECT().Get(
 		ctx,
-		fmt.Sprintf("/eth/v3/validator/blocks/%d?graffiti=%s&randao_reveal=%s", slot, hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
+		fmt.Sprintf("/eth/v3/validator/blocks/%d?builder_boost_factor=%s&graffiti=%s&randao_reveal=%s", slot, "100", hexutil.Encode(graffiti), hexutil.Encode(randaoReveal)),
 		&structs.ProduceBlockV3Response{},
 	).Return(
 		&httputil.DefaultJsonError{Code: http.StatusNotFound},
@@ -596,7 +597,7 @@ func TestGetBeaconBlock_FallbackToFullBlock(t *testing.T) {
 	).Times(1)
 
 	validatorClient := &beaconApiValidatorClient{jsonRestHandler: jsonRestHandler}
-	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti)
+	beaconBlock, err := validatorClient.getBeaconBlock(ctx, slot, randaoReveal, graffiti, &wrapperspb.UInt64Value{Value: 100})
 	require.NoError(t, err)
 
 	expectedBeaconBlock := &ethpb.GenericBeaconBlock{

validator/client/propose.go

@@ -28,6 +28,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/validator/client/iface"
 	"github.com/sirupsen/logrus"
 	"go.opencensus.io/trace"
+	"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 const (
@@ -79,9 +80,10 @@ func (v *validator) ProposeBlock(ctx context.Context, slot primitives.Slot, pubK
 
 	// Request block from beacon node
 	b, err := v.validatorClient.GetBeaconBlock(ctx, &ethpb.BlockRequest{
-		Slot:         slot,
+		Slot:               slot,
-		RandaoReveal: randaoReveal,
+		RandaoReveal:       randaoReveal,
-		Graffiti:     g,
+		Graffiti:           g,
+		BuilderBoostFactor: findBuilderBoost(pubKey, v.proposerSettings),
 	})
 	if err != nil {
 		log.WithField("slot", slot).WithError(err).Error("Failed to request block from beacon node")
@@ -225,6 +227,31 @@ func (v *validator) ProposeBlock(ctx context.Context, slot primitives.Slot, pubK
 	}
 }
 
+func findBuilderBoost(pubKey [fieldparams.BLSPubkeyLength]byte, proposerSettings *proposer.Settings) *wrapperspb.UInt64Value {
+	if proposerSettings == nil {
+		return nil
+	}
+
+	if proposerSettings.ProposeConfig != nil {
+		option, ok := proposerSettings.ProposeConfig[pubKey]
+		if ok && option.BuilderConfig != nil && option.BuilderConfig.BuilderBoostFactor != nil {
+			return &wrapperspb.UInt64Value{
+				Value: *option.BuilderConfig.BuilderBoostFactor,
+			}
+		}
+	}
+
+	if proposerSettings.DefaultConfig != nil &&
+		proposerSettings.DefaultConfig.BuilderConfig != nil &&
+		proposerSettings.DefaultConfig.BuilderConfig.BuilderBoostFactor != nil {
+		return &wrapperspb.UInt64Value{
+			Value: *proposerSettings.DefaultConfig.BuilderConfig.BuilderBoostFactor,
+		}
+	}
+
+	return nil
+}
+
 // ProposeExit performs a voluntary exit on a validator.
 // The exit is signed by the validator before being sent to the beacon node for broadcasting.
 func ProposeExit(

validator/client/propose_test.go

@@ -5,9 +5,11 @@ import (
 	"encoding/hex"
 	"errors"
 	"fmt"
+	"reflect"
 	"strings"
 	"testing"
 
+	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 	"github.com/prysmaticlabs/prysm/v5/beacon-chain/core/signing"
 	lruwrpr "github.com/prysmaticlabs/prysm/v5/cache/lru"
@@ -31,6 +33,7 @@ import (
 	"github.com/prysmaticlabs/prysm/v5/validator/graffiti"
 	logTest "github.com/sirupsen/logrus/hooks/test"
 	"go.uber.org/mock/gomock"
+	"google.golang.org/protobuf/types/known/wrapperspb"
 )
 
 type mocks struct {
@@ -1260,3 +1263,156 @@ func Test_validator_SetGraffiti(t *testing.T) {
 		})
 	}
 }
+
+func Test_findBuilderBoost(t *testing.T) {
+	pubKey := [fieldparams.BLSPubkeyLength]byte{'a'}
+
+	type args struct {
+		proposerSettings *proposer.Settings
+	}
+	tests := []struct {
+		name string
+		args args
+		want *wrapperspb.UInt64Value
+	}{
+		{
+			name: "no proposer settings",
+			args: args{
+				proposerSettings: nil,
+			},
+			want: nil,
+		},
+		{
+			name: "Proposer settings without builder settings",
+			args: args{
+				proposerSettings: &proposer.Settings{
+					ProposeConfig: func() map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option {
+						config := make(map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option)
+						config[pubKey] = &proposer.Option{
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("a"),
+							},
+						}
+						return config
+					}(),
+				},
+			},
+			want: nil,
+		},
+		{
+			name: "Proposer settings with builder settings but without builder boost factor",
+			args: args{
+				proposerSettings: &proposer.Settings{
+					ProposeConfig: func() map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option {
+						config := make(map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option)
+						config[pubKey] = &proposer.Option{
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("a"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled: true,
+							},
+						}
+						return config
+					}(),
+				},
+			},
+			want: nil,
+		},
+		{
+			name: "Proposer settings with builder settings and specific propose config",
+			args: args{
+				proposerSettings: &proposer.Settings{
+					ProposeConfig: func() map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option {
+						config := make(map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option)
+						bb := uint64(123)
+						config[pubKey] = &proposer.Option{
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("a"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								BuilderBoostFactor: &bb,
+							},
+						}
+						return config
+					}(),
+				},
+			},
+			want: &wrapperspb.UInt64Value{
+				Value: 123,
+			},
+		},
+		{
+			name: "Proposer settings with builder settings and specific propose config but wrong pubkey",
+			args: args{
+				proposerSettings: &proposer.Settings{
+					ProposeConfig: func() map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option {
+						config := make(map[[fieldparams.BLSPubkeyLength]byte]*proposer.Option)
+						bb := uint64(123)
+						config[[fieldparams.BLSPubkeyLength]byte{'z'}] = &proposer.Option{
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("a"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								BuilderBoostFactor: &bb,
+							},
+						}
+						return config
+					}(),
+				},
+			},
+			want: nil,
+		},
+		{
+			name: "Proposer settings with builder settings and default config",
+			args: args{
+				proposerSettings: &proposer.Settings{
+					DefaultConfig: func() *proposer.Option {
+						bb := uint64(123)
+						return &proposer.Option{
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("a"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								BuilderBoostFactor: &bb,
+							},
+						}
+					}(),
+				},
+			},
+			want: &wrapperspb.UInt64Value{
+				Value: 123,
+			},
+		},
+		{
+			name: "Proposer settings with nil boost settings",
+			args: args{
+				proposerSettings: &proposer.Settings{
+					DefaultConfig: func() *proposer.Option {
+						var bb *uint64
+						return &proposer.Option{
+							FeeRecipientConfig: &proposer.FeeRecipientConfig{
+								FeeRecipient: common.HexToAddress("a"),
+							},
+							BuilderConfig: &proposer.BuilderConfig{
+								Enabled:            true,
+								BuilderBoostFactor: bb,
+							},
+						}
+					}(),
+				},
+			},
+			want: nil,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := findBuilderBoost(pubKey, tt.args.proposerSettings); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("findBuilderBoost() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

validator/node/node.go

@@ -613,6 +613,7 @@ func proposerSettings(cliCtx *cli.Context, db iface.ValidatorDB) (*proposer.Sett
 		db,
 		loader.WithBuilderConfig(),
 		loader.WithGasLimit(),
+		loader.WithBuilderBoostFactor(),
 	)
 	if err != nil {
 		return nil, err