diff --git a/pkg/mev/bloxroute_submit_bundle.go b/pkg/mev/bloxroute_submit_bundle.go
index 57ce151..0454ac8 100644
--- a/pkg/mev/bloxroute_submit_bundle.go
+++ b/pkg/mev/bloxroute_submit_bundle.go
@@ -24,6 +24,7 @@ const (
 	BuilderAll          Builder = "all"
 )
 
+// BloxrouteSubmitBundle https://docs.bloxroute.com/apis/mev-solution/bundle-submission
 func BloxrouteSubmitBundle( // nolint: cyclop
 	ctx context.Context, c *http.Client, auth, endpoint string,
 	param *BLXRSubmitBundleParams, options ...BloxrouteSubmitBundleOption,
@@ -122,6 +123,7 @@ func WithBuilderRsyncBuilder() BloxrouteSubmitBundleOption {
 	}
 }
 
+// WithBuilderAll still need to use the WithBuilderFlashbot to submit to flashbots.
 func WithBuilderAll() BloxrouteSubmitBundleOption {
 	return func(bsbo *blxrSubmitBundleOptions) {
 		bsbo.builderAll = true
diff --git a/pkg/mev/send_bundle.go b/pkg/mev/send_bundle.go
index 615bfb6..b2194ef 100644
--- a/pkg/mev/send_bundle.go
+++ b/pkg/mev/send_bundle.go
@@ -14,6 +14,8 @@ import (
 	"github.com/ethereum/go-ethereum/crypto"
 )
 
+// SendBundle https://docs.flashbots.net/flashbots-auction/advanced/rpc-endpoint#eth_sendbundle,
+// https://beaverbuild.org/docs.html, https://rsync-builder.xyz/docs
 func SendBundle( // nolint: cyclop
 	ctx context.Context, c *http.Client, endpoint string, param *SendBundleParams, options ...SendBundleOption,
 ) (SendBundleResponse, error) {