diff --git a/api/v0api/gateway.go b/api/v0api/gateway.go
index a5ea73a01..603c099e8 100644
--- a/api/v0api/gateway.go
+++ b/api/v0api/gateway.go
@@ -45,6 +45,7 @@ type Gateway interface {
 	StateSectorGetInfo(ctx context.Context, maddr address.Address, n abi.SectorNumber, tsk types.TipSetKey) (*miner.SectorOnChainInfo, error)
 	StateVerifiedClientStatus(ctx context.Context, addr address.Address, tsk types.TipSetKey) (*abi.StoragePower, error)
 	StateWaitMsg(ctx context.Context, msg cid.Cid, confidence uint64) (*api.MsgLookup, error)
+	WalletBalance(context.Context, address.Address) (types.BigInt, error)
 }
 
 var _ Gateway = *new(FullNode)
diff --git a/api/v0api/proxy_gen.go b/api/v0api/proxy_gen.go
index b53f802c3..171a9e05a 100644
--- a/api/v0api/proxy_gen.go
+++ b/api/v0api/proxy_gen.go
@@ -442,6 +442,8 @@ type GatewayStruct struct {
 		StateVerifiedClientStatus func(p0 context.Context, p1 address.Address, p2 types.TipSetKey) (*abi.StoragePower, error) ``
 
 		StateWaitMsg func(p0 context.Context, p1 cid.Cid, p2 uint64) (*api.MsgLookup, error) ``
+
+		WalletBalance func(p0 context.Context, p1 address.Address) (types.BigInt, error) ``
 	}
 }
 
@@ -2064,5 +2066,13 @@ func (s *GatewayStub) StateWaitMsg(p0 context.Context, p1 cid.Cid, p2 uint64) (*
 	return nil, xerrors.New("method not supported")
 }
 
+func (s *GatewayStruct) WalletBalance(p0 context.Context, p1 address.Address) (types.BigInt, error) {
+	return s.Internal.WalletBalance(p0, p1)
+}
+
+func (s *GatewayStub) WalletBalance(p0 context.Context, p1 address.Address) (types.BigInt, error) {
+	return *new(types.BigInt), xerrors.New("method not supported")
+}
+
 var _ FullNode = new(FullNodeStruct)
 var _ Gateway = new(GatewayStruct)