diff --git a/client.go b/client.go
index 27f7e6a..bf95ba2 100644
--- a/client.go
+++ b/client.go
@@ -437,9 +437,9 @@ func (s *Client) waitForInitialized(ctx context.Context) error {
 func (s *Client) LoopIn(globalCtx context.Context,
 	request *LoopInRequest) (*lntypes.Hash, btcutil.Address, error) {
 
-	log.Infof("Loop in %v (channel: %v)",
+	log.Infof("Loop in %v (last hop: %v)",
 		request.Amount,
-		request.LoopInChannel,
+		request.LastHop,
 	)
 
 	if err := s.waitForInitialized(globalCtx); err != nil {
diff --git a/interface.go b/interface.go
index e445b66..98850b8 100644
--- a/interface.go
+++ b/interface.go
@@ -7,6 +7,7 @@ import (
 	"github.com/lightninglabs/loop/loopdb"
 	"github.com/lightninglabs/loop/swap"
 	"github.com/lightningnetwork/lnd/lntypes"
+	"github.com/lightningnetwork/lnd/routing/route"
 )
 
 // OutRequest contains the required parameters for a loop out swap.
@@ -173,9 +174,9 @@ type LoopInRequest struct {
 	// client htlc tx.
 	HtlcConfTarget int32
 
-	// LoopInChannel optionally specifies the short channel id of the
-	// channel to loop in.
-	LoopInChannel *uint64
+	// LastHop optionally specifies the last hop to use for the loop in
+	// payment.
+	LastHop *route.Vertex
 
 	// ExternalHtlc specifies whether the htlc is published by an external
 	// source.
diff --git a/loopd/swapclient_server.go b/loopd/swapclient_server.go
index cd19b05..3b7cbc0 100644
--- a/loopd/swapclient_server.go
+++ b/loopd/swapclient_server.go
@@ -10,6 +10,7 @@ import (
 
 	"github.com/lightningnetwork/lnd/lntypes"
 	"github.com/lightningnetwork/lnd/queue"
+	"github.com/lightningnetwork/lnd/routing/route"
 
 	"github.com/lightninglabs/loop"
 	"github.com/lightninglabs/loop/lndclient"
@@ -387,8 +388,12 @@ func (s *swapClientServer) LoopIn(ctx context.Context,
 		HtlcConfTarget: defaultConfTarget,
 		ExternalHtlc:   in.ExternalHtlc,
 	}
-	if in.LoopInChannel != 0 {
-		req.LoopInChannel = &in.LoopInChannel
+	if in.LastHop != nil {
+		lastHop, err := route.NewVertexFromBytes(in.LastHop)
+		if err != nil {
+			return nil, err
+		}
+		req.LastHop = &lastHop
 	}
 	hash, htlc, err := s.impl.LoopIn(ctx, req)
 	if err != nil {
diff --git a/loopdb/loopin.go b/loopdb/loopin.go
index d971afe..409d679 100644
--- a/loopdb/loopin.go
+++ b/loopdb/loopin.go
@@ -5,6 +5,8 @@ import (
 	"encoding/binary"
 	"fmt"
 	"time"
+
+	"github.com/lightningnetwork/lnd/routing/route"
 )
 
 // LoopInContract contains the data that is serialized to persistent storage for
@@ -16,9 +18,8 @@ type LoopInContract struct {
 	// client sweep tx.
 	HtlcConfTarget int32
 
-	// LoopInChannel is the channel to charge. If zero, any channel may
-	// be used.
-	LoopInChannel *uint64
+	// LastHop is the last hop to use for the loop in swap (optional).
+	LastHop *route.Vertex
 
 	// ExternalHtlc specifies whether the htlc is published by an external
 	// source.
@@ -96,11 +97,11 @@ func serializeLoopInContract(swap *LoopInContract) (
 		return nil, err
 	}
 
-	var chargeChannel uint64
-	if swap.LoopInChannel != nil {
-		chargeChannel = *swap.LoopInChannel
+	var lastHop route.Vertex
+	if swap.LastHop != nil {
+		lastHop = *swap.LastHop
 	}
-	if err := binary.Write(&b, byteOrder, chargeChannel); err != nil {
+	if err := binary.Write(&b, byteOrder, lastHop[:]); err != nil {
 		return nil, err
 	}
 
@@ -167,12 +168,13 @@ func deserializeLoopInContract(value []byte) (*LoopInContract, error) {
 		return nil, err
 	}
 
-	var loopInChannel uint64
-	if err := binary.Read(r, byteOrder, &loopInChannel); err != nil {
+	var lastHop route.Vertex
+	if err := binary.Read(r, byteOrder, lastHop[:]); err != nil {
 		return nil, err
 	}
-	if loopInChannel != 0 {
-		contract.LoopInChannel = &loopInChannel
+	var noLastHop route.Vertex
+	if lastHop != noLastHop {
+		contract.LastHop = &lastHop
 	}
 
 	if err := binary.Read(r, byteOrder, &contract.ExternalHtlc); err != nil {
diff --git a/loopdb/meta.go b/loopdb/meta.go
index 0d21f47..1d81a06 100644
--- a/loopdb/meta.go
+++ b/loopdb/meta.go
@@ -35,6 +35,7 @@ var (
 	migrations = []migration{
 		migrateCosts,
 		migrateSwapPublicationDeadline,
+		migrateLastHop,
 	}
 
 	latestDBVersion = uint32(len(migrations))
diff --git a/loopdb/migration_03_last_hop.go b/loopdb/migration_03_last_hop.go
new file mode 100644
index 0000000..f297e66
--- /dev/null
+++ b/loopdb/migration_03_last_hop.go
@@ -0,0 +1,86 @@
+package loopdb
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+
+	"github.com/btcsuite/btcd/chaincfg"
+	"github.com/coreos/bbolt"
+)
+
+// migrateLastHop migrates the database to v03, replacing the never used loop in
+// channel by a last hop pubkey.
+func migrateLastHop(tx *bbolt.Tx, chainParams *chaincfg.Params) error {
+	rootBucket := tx.Bucket(loopInBucketKey)
+	if rootBucket == nil {
+		return errors.New("bucket does not exist")
+	}
+
+	return rootBucket.ForEach(func(swapHash, v []byte) error {
+		// Only go into things that we know are sub-bucket
+		// keys.
+		if v != nil {
+			return nil
+		}
+
+		// From the root bucket, we'll grab the next swap
+		// bucket for this swap from its swaphash.
+		swapBucket := rootBucket.Bucket(swapHash)
+		if swapBucket == nil {
+			return fmt.Errorf("swap bucket %x not found",
+				swapHash)
+		}
+
+		// With the main swap bucket obtained, we'll grab the
+		// raw swap contract bytes.
+		contractBytes := swapBucket.Get(contractKey)
+		if contractBytes == nil {
+			return errors.New("contract not found")
+		}
+
+		const (
+			// deprecatedLoopInChannelStart is the starting offset
+			// of the old loop in channel field: 8 (initiation time)
+			// + 32 (preimage) + 8 (amount requested) + 33 + 33
+			// (sender and receiver keys) + 4 (cltv expiry) + 8 + 8
+			// (max miner and swap fee) + 4 (initiation height) + 4
+			// (conf target) = 142.
+			deprecatedLoopInChannelStart = 142
+
+			// expectedTotalLength is the expect total length of the
+			// serialized contract. It adds 8 (old loop in channel)
+			// + 1 (external htlc) = 9 bytes to
+			// deprecatedLoopInChannelStart.
+			expectedTotalLength = deprecatedLoopInChannelStart + 9
+		)
+
+		// Sanity check to see if the constants above match the contract
+		// bytes.
+		if len(contractBytes) != expectedTotalLength {
+			return errors.New("invalid serialized contract length")
+		}
+
+		// Copy the unchanged fields into the buffer.
+		b := &bytes.Buffer{}
+		_, err := b.Write(contractBytes[:deprecatedLoopInChannelStart])
+		if err != nil {
+			return err
+		}
+
+		// We now set the new last hop field to all zeroes to indicate
+		// that there is no restriction.
+		var noLastHop [33]byte
+		if _, err := b.Write(noLastHop[:]); err != nil {
+			return err
+		}
+
+		// Append the remaining field ExternalHtlc.
+		_, err = b.Write(contractBytes[deprecatedLoopInChannelStart+8:])
+		if err != nil {
+			return err
+		}
+
+		return swapBucket.Put(contractKey, b.Bytes())
+	})
+}
diff --git a/loopdb/store_test.go b/loopdb/store_test.go
index 1d9ceaa..26da3a8 100644
--- a/loopdb/store_test.go
+++ b/loopdb/store_test.go
@@ -13,6 +13,7 @@ import (
 	"github.com/coreos/bbolt"
 	"github.com/lightninglabs/loop/test"
 	"github.com/lightningnetwork/lnd/lntypes"
+	"github.com/lightningnetwork/lnd/routing/route"
 )
 
 var (
@@ -197,7 +198,7 @@ func TestLoopInStore(t *testing.T) {
 
 	// Next, we'll make a new pending swap that we'll insert into the
 	// database shortly.
-	loopInChannel := uint64(123)
+	lastHop := route.Vertex{1, 2, 3}
 
 	pendingSwap := LoopInContract{
 		SwapContract: SwapContract{
@@ -215,7 +216,7 @@ func TestLoopInStore(t *testing.T) {
 			InitiationTime: time.Unix(0, initiationTime.UnixNano()),
 		},
 		HtlcConfTarget: 2,
-		LoopInChannel:  &loopInChannel,
+		LastHop:        &lastHop,
 		ExternalHtlc:   true,
 	}
 
diff --git a/loopin.go b/loopin.go
index f2f9846..aceda47 100644
--- a/loopin.go
+++ b/loopin.go
@@ -133,7 +133,7 @@ func newLoopInSwap(globalCtx context.Context, cfg *swapConfig,
 
 	contract := loopdb.LoopInContract{
 		HtlcConfTarget: request.HtlcConfTarget,
-		LoopInChannel:  request.LoopInChannel,
+		LastHop:        request.LastHop,
 		ExternalHtlc:   request.ExternalHtlc,
 		SwapContract: loopdb.SwapContract{
 			InitiationHeight: currentHeight,
diff --git a/looprpc/client.pb.go b/looprpc/client.pb.go
index 4fae095..5574df0 100644
--- a/looprpc/client.pb.go
+++ b/looprpc/client.pb.go
@@ -285,11 +285,9 @@ type LoopInRequest struct {
 	//max_miner_fee is typically taken from the response of the GetQuote call.
 	MaxMinerFee int64 `protobuf:"varint,3,opt,name=max_miner_fee,json=maxMinerFee,proto3" json:"max_miner_fee,omitempty"`
 	//*
-	//The channel to loop in. If zero, the channel to loop in is selected based
-	//on the lowest routing fee for the swap payment from the server.
-	//
-	//Note: NOT YET IMPLEMENTED
-	LoopInChannel uint64 `protobuf:"varint,4,opt,name=loop_in_channel,json=loopInChannel,proto3" json:"loop_in_channel,omitempty"`
+	//The last hop to use for the loop in swap. If empty, the last hop is selected
+	//based on the lowest routing fee for the swap payment from the server.
+	LastHop []byte `protobuf:"bytes,4,opt,name=last_hop,json=lastHop,proto3" json:"last_hop,omitempty"`
 	//*
 	//If external_htlc is true, we expect the htlc to be published by an external
 	//actor.
@@ -345,11 +343,11 @@ func (m *LoopInRequest) GetMaxMinerFee() int64 {
 	return 0
 }
 
-func (m *LoopInRequest) GetLoopInChannel() uint64 {
+func (m *LoopInRequest) GetLastHop() []byte {
 	if m != nil {
-		return m.LoopInChannel
+		return m.LastHop
 	}
-	return 0
+	return nil
 }
 
 func (m *LoopInRequest) GetExternalHtlc() bool {
@@ -1166,98 +1164,98 @@ func init() {
 func init() { proto.RegisterFile("client.proto", fileDescriptor_014de31d7ac8c57c) }
 
 var fileDescriptor_014de31d7ac8c57c = []byte{
-	// 1446 bytes of a gzipped FileDescriptorProto
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+	0x66, 0xbe, 0x68, 0x6d, 0x16, 0xe8, 0x35, 0x93, 0x6e, 0xb7, 0x6f, 0x5a, 0x2a, 0x06, 0x8c, 0xec,
+	0x4c, 0x5f, 0x1a, 0x33, 0x3a, 0x51, 0x0d, 0x20, 0x8c, 0x19, 0xb5, 0x0a, 0x81, 0xe5, 0xbc, 0xfa,
+	0xe6, 0x90, 0xdb, 0x52, 0xf2, 0x2e, 0x42, 0x05, 0xc9, 0xce, 0xa7, 0x30, 0xf8, 0x8c, 0xde, 0x80,
+	0xa5, 0x4b, 0x23, 0x3d, 0x1c, 0xcd, 0xd2, 0x98, 0xf7, 0xf8, 0xf6, 0xca, 0x75, 0x58, 0x47, 0x3b,
+	0x2f, 0x4d, 0x27, 0xbc, 0xc3, 0xa5, 0x94, 0x9f, 0x49, 0x4b, 0xe7, 0xcb, 0x49, 0xe7, 0xed, 0x3a,
+	0x27, 0x5d, 0x30, 0x48, 0x77, 0x5d, 0x4a, 0xb7, 0x51, 0xab, 0x20, 0xfd, 0x5e, 0x70, 0x3a, 0x9f,
+	0x70, 0xc4, 0x3f, 0xa3, 0xb7, 0x60, 0xbf, 0x22, 0x5c, 0xb5, 0xc1, 0x57, 0x45, 0xbf, 0x26, 0x8f,
+	0x58, 0x46, 0x4b, 0xb9, 0xe6, 0xd0, 0xc1, 0xbf, 0xcb, 0x69, 0x7f, 0x55, 0xf8, 0x0f, 0xa4, 0xf6,
+	0x1a, 0x5a, 0xcd, 0x6b, 0xe7, 0xa3, 0x7f, 0x03, 0x0d, 0x71, 0xc2, 0xd4, 0x11, 0x59, 0xae, 0xb3,
+	0x0b, 0xb6, 0xdb, 0x5e, 0x9d, 0xc3, 0x8b, 0xd3, 0x82, 0x9a, 0xf2, 0x08, 0x86, 0x79, 0x47, 0x59,
+	0xed, 0xe9, 0xa2, 0xfc, 0x6b, 0xf1, 0xec, 0x9f, 0x00, 0x00, 0x00, 0xff, 0xff, 0x66, 0x22, 0xfe,
+	0xe9, 0x91, 0x0c, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/looprpc/client.pb.gw.go b/looprpc/client.pb.gw.go
index a146bda..05bd907 100644
--- a/looprpc/client.pb.gw.go
+++ b/looprpc/client.pb.gw.go
@@ -13,7 +13,6 @@ import (
 	"io"
 	"net/http"
 
-	"github.com/golang/protobuf/descriptor"
 	"github.com/golang/protobuf/proto"
 	"github.com/grpc-ecosystem/grpc-gateway/runtime"
 	"github.com/grpc-ecosystem/grpc-gateway/utilities"
@@ -23,13 +22,11 @@ import (
 	"google.golang.org/grpc/status"
 )
 
-// Suppress "imported and not used" errors
 var _ codes.Code
 var _ io.Reader
 var _ status.Status
 var _ = runtime.String
 var _ = utilities.NewDoubleArray
-var _ = descriptor.ForMessage
 
 func request_SwapClient_LoopOut_0(ctx context.Context, marshaler runtime.Marshaler, client SwapClientClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq LoopOutRequest
@@ -48,23 +45,6 @@ func request_SwapClient_LoopOut_0(ctx context.Context, marshaler runtime.Marshal
 
 }
 
-func local_request_SwapClient_LoopOut_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq LoopOutRequest
-	var metadata runtime.ServerMetadata
-
-	newReader, berr := utilities.IOReaderFactory(req.Body)
-	if berr != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
-	}
-	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.LoopOut(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 func request_SwapClient_LoopIn_0(ctx context.Context, marshaler runtime.Marshaler, client SwapClientClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq LoopInRequest
 	var metadata runtime.ServerMetadata
@@ -82,23 +62,6 @@ func request_SwapClient_LoopIn_0(ctx context.Context, marshaler runtime.Marshale
 
 }
 
-func local_request_SwapClient_LoopIn_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq LoopInRequest
-	var metadata runtime.ServerMetadata
-
-	newReader, berr := utilities.IOReaderFactory(req.Body)
-	if berr != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
-	}
-	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.LoopIn(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 func request_SwapClient_Monitor_0(ctx context.Context, marshaler runtime.Marshaler, client SwapClientClient, req *http.Request, pathParams map[string]string) (SwapClient_MonitorClient, runtime.ServerMetadata, error) {
 	var protoReq MonitorRequest
 	var metadata runtime.ServerMetadata
@@ -125,15 +88,6 @@ func request_SwapClient_ListSwaps_0(ctx context.Context, marshaler runtime.Marsh
 
 }
 
-func local_request_SwapClient_ListSwaps_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq ListSwapsRequest
-	var metadata runtime.ServerMetadata
-
-	msg, err := server.ListSwaps(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 func request_SwapClient_SwapInfo_0(ctx context.Context, marshaler runtime.Marshaler, client SwapClientClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq SwapInfoRequest
 	var metadata runtime.ServerMetadata
@@ -161,33 +115,6 @@ func request_SwapClient_SwapInfo_0(ctx context.Context, marshaler runtime.Marsha
 
 }
 
-func local_request_SwapClient_SwapInfo_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq SwapInfoRequest
-	var metadata runtime.ServerMetadata
-
-	var (
-		val string
-		ok  bool
-		err error
-		_   = err
-	)
-
-	val, ok = pathParams["id"]
-	if !ok {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
-	}
-
-	protoReq.Id, err = runtime.Bytes(val)
-
-	if err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
-	}
-
-	msg, err := server.SwapInfo(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 func request_SwapClient_LoopOutTerms_0(ctx context.Context, marshaler runtime.Marshaler, client SwapClientClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq TermsRequest
 	var metadata runtime.ServerMetadata
@@ -197,15 +124,6 @@ func request_SwapClient_LoopOutTerms_0(ctx context.Context, marshaler runtime.Ma
 
 }
 
-func local_request_SwapClient_LoopOutTerms_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq TermsRequest
-	var metadata runtime.ServerMetadata
-
-	msg, err := server.LoopOutTerms(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 var (
 	filter_SwapClient_LoopOutQuote_0 = &utilities.DoubleArray{Encoding: map[string]int{"amt": 0}, Base: []int{1, 1, 0}, Check: []int{0, 1, 2}}
 )
@@ -232,45 +150,11 @@ func request_SwapClient_LoopOutQuote_0(ctx context.Context, marshaler runtime.Ma
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "amt", err)
 	}
 
-	if err := req.ParseForm(); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_SwapClient_LoopOutQuote_0); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.LoopOutQuote(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_SwapClient_LoopOutQuote_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq QuoteRequest
-	var metadata runtime.ServerMetadata
-
-	var (
-		val string
-		ok  bool
-		err error
-		_   = err
-	)
-
-	val, ok = pathParams["amt"]
-	if !ok {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "amt")
-	}
-
-	protoReq.Amt, err = runtime.Int64(val)
-
-	if err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "amt", err)
-	}
-
 	if err := runtime.PopulateQueryParameters(&protoReq, req.URL.Query(), filter_SwapClient_LoopOutQuote_0); err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
 	}
 
-	msg, err := server.LoopOutQuote(ctx, &protoReq)
+	msg, err := client.LoopOutQuote(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
 	return msg, metadata, err
 
 }
@@ -284,15 +168,6 @@ func request_SwapClient_GetLoopInTerms_0(ctx context.Context, marshaler runtime.
 
 }
 
-func local_request_SwapClient_GetLoopInTerms_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq TermsRequest
-	var metadata runtime.ServerMetadata
-
-	msg, err := server.GetLoopInTerms(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
 var (
 	filter_SwapClient_GetLoopInQuote_0 = &utilities.DoubleArray{Encoding: map[string]int{"amt": 0}, Base: []int{1, 1, 0}, Check: []int{0, 1, 2}}
 )
@@ -319,45 +194,11 @@ func request_SwapClient_GetLoopInQuote_0(ctx context.Context, marshaler runtime.
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "amt", err)
 	}
 
-	if err := req.ParseForm(); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_SwapClient_GetLoopInQuote_0); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.GetLoopInQuote(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_SwapClient_GetLoopInQuote_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq QuoteRequest
-	var metadata runtime.ServerMetadata
-
-	var (
-		val string
-		ok  bool
-		err error
-		_   = err
-	)
-
-	val, ok = pathParams["amt"]
-	if !ok {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "amt")
-	}
-
-	protoReq.Amt, err = runtime.Int64(val)
-
-	if err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "amt", err)
-	}
-
 	if err := runtime.PopulateQueryParameters(&protoReq, req.URL.Query(), filter_SwapClient_GetLoopInQuote_0); err != nil {
 		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
 	}
 
-	msg, err := server.GetLoopInQuote(ctx, &protoReq)
+	msg, err := client.GetLoopInQuote(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
 	return msg, metadata, err
 
 }
@@ -371,210 +212,6 @@ func request_SwapClient_GetLsatTokens_0(ctx context.Context, marshaler runtime.M
 
 }
 
-func local_request_SwapClient_GetLsatTokens_0(ctx context.Context, marshaler runtime.Marshaler, server SwapClientServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq TokensRequest
-	var metadata runtime.ServerMetadata
-
-	msg, err := server.GetLsatTokens(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
-// RegisterSwapClientHandlerServer registers the http handlers for service SwapClient to "mux".
-// UnaryRPC     :call SwapClientServer directly.
-// StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
-func RegisterSwapClientHandlerServer(ctx context.Context, mux *runtime.ServeMux, server SwapClientServer) error {
-
-	mux.Handle("POST", pattern_SwapClient_LoopOut_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_LoopOut_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_LoopOut_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("POST", pattern_SwapClient_LoopIn_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_LoopIn_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_LoopIn_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_SwapClient_Monitor_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		err := status.Error(codes.Unimplemented, "streaming calls are not yet supported in the in-process transport")
-		_, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-		return
-	})
-
-	mux.Handle("GET", pattern_SwapClient_ListSwaps_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_ListSwaps_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_ListSwaps_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_SwapClient_SwapInfo_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_SwapInfo_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_SwapInfo_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_SwapClient_LoopOutTerms_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_LoopOutTerms_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_LoopOutTerms_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_SwapClient_LoopOutQuote_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_LoopOutQuote_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_LoopOutQuote_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_SwapClient_GetLoopInTerms_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_GetLoopInTerms_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_GetLoopInTerms_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_SwapClient_GetLoopInQuote_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_GetLoopInQuote_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_GetLoopInQuote_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_SwapClient_GetLsatTokens_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		rctx, err := runtime.AnnotateIncomingContext(ctx, mux, req)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_SwapClient_GetLsatTokens_0(rctx, inboundMarshaler, server, req, pathParams)
-		ctx = runtime.NewServerMetadataContext(ctx, md)
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_SwapClient_GetLsatTokens_0(ctx, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	return nil
-}
-
 // RegisterSwapClientHandlerFromEndpoint is same as RegisterSwapClientHandler but
 // automatically dials to "endpoint" and closes the connection when "ctx" gets done.
 func RegisterSwapClientHandlerFromEndpoint(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) (err error) {
@@ -817,25 +454,25 @@ func RegisterSwapClientHandlerClient(ctx context.Context, mux *runtime.ServeMux,
 }
 
 var (
-	pattern_SwapClient_LoopOut_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "out"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_LoopOut_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "out"}, ""))
 
-	pattern_SwapClient_LoopIn_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "in"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_LoopIn_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "in"}, ""))
 
-	pattern_SwapClient_Monitor_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "monitor"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_Monitor_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "monitor"}, ""))
 
-	pattern_SwapClient_ListSwaps_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "swaps"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_ListSwaps_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "loop", "swaps"}, ""))
 
-	pattern_SwapClient_SwapInfo_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 1, 5, 3}, []string{"v1", "loop", "swap", "id"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_SwapInfo_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 1, 5, 3}, []string{"v1", "loop", "swap", "id"}, ""))
 
-	pattern_SwapClient_LoopOutTerms_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"v1", "loop", "out", "terms"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_LoopOutTerms_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"v1", "loop", "out", "terms"}, ""))
 
-	pattern_SwapClient_LoopOutQuote_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"v1", "loop", "out", "quote", "amt"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_LoopOutQuote_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"v1", "loop", "out", "quote", "amt"}, ""))
 
-	pattern_SwapClient_GetLoopInTerms_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"v1", "loop", "in", "terms"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_GetLoopInTerms_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"v1", "loop", "in", "terms"}, ""))
 
-	pattern_SwapClient_GetLoopInQuote_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"v1", "loop", "in", "quote", "amt"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_GetLoopInQuote_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"v1", "loop", "in", "quote", "amt"}, ""))
 
-	pattern_SwapClient_GetLsatTokens_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "lsat", "tokens"}, "", runtime.AssumeColonVerbOpt(true)))
+	pattern_SwapClient_GetLsatTokens_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"v1", "lsat", "tokens"}, ""))
 )
 
 var (
diff --git a/looprpc/client.proto b/looprpc/client.proto
index 337253f..71ff8ee 100644
--- a/looprpc/client.proto
+++ b/looprpc/client.proto
@@ -213,12 +213,10 @@ message LoopInRequest {
     int64 max_miner_fee = 3;
 
     /**
-    The channel to loop in. If zero, the channel to loop in is selected based
-    on the lowest routing fee for the swap payment from the server.
-
-    Note: NOT YET IMPLEMENTED
+    The last hop to use for the loop in swap. If empty, the last hop is selected
+    based on the lowest routing fee for the swap payment from the server.
     */
-    uint64 loop_in_channel = 4;
+    bytes last_hop = 4;
 
     /**
     If external_htlc is true, we expect the htlc to be published by an external
diff --git a/looprpc/client.swagger.json b/looprpc/client.swagger.json
index b9ab181..54457f9 100644
--- a/looprpc/client.swagger.json
+++ b/looprpc/client.swagger.json
@@ -4,6 +4,10 @@
     "title": "client.proto",
     "version": "version not set"
   },
+  "schemes": [
+    "http",
+    "https"
+  ],
   "consumes": [
     "application/json"
   ],
@@ -114,16 +118,7 @@
           "200": {
             "description": "A successful response.(streaming responses)",
             "schema": {
-              "type": "object",
-              "properties": {
-                "result": {
-                  "$ref": "#/definitions/looprpcSwapStatus"
-                },
-                "error": {
-                  "$ref": "#/definitions/runtimeStreamError"
-                }
-              },
-              "title": "Stream result of looprpcSwapStatus"
+              "$ref": "#/x-stream-definitions/looprpcSwapStatus"
             }
           }
         },
@@ -320,10 +315,10 @@
           "format": "int64",
           "description": "*\nMaximum in on-chain fees that we are willing to spent. If we want to\npublish the on-chain htlc and the fee estimate turns out higher than this\nvalue, we cancel the swap. \n\nmax_miner_fee is typically taken from the response of the GetQuote call."
         },
-        "loop_in_channel": {
+        "last_hop": {
           "type": "string",
-          "format": "uint64",
-          "description": "*\nThe channel to loop in. If zero, the channel to loop in is selected based\non the lowest routing fee for the swap payment from the server.\n\nNote: NOT YET IMPLEMENTED"
+          "format": "byte",
+          "description": "*\nThe last hop to use for the loop in swap. If empty, the last hop is selected\nbased on the lowest routing fee for the swap payment from the server."
         },
         "external_htlc": {
           "type": "boolean",
@@ -620,5 +615,19 @@
         }
       }
     }
+  },
+  "x-stream-definitions": {
+    "looprpcSwapStatus": {
+      "type": "object",
+      "properties": {
+        "result": {
+          "$ref": "#/definitions/looprpcSwapStatus"
+        },
+        "error": {
+          "$ref": "#/definitions/runtimeStreamError"
+        }
+      },
+      "title": "Stream result of looprpcSwapStatus"
+    }
   }
 }