diff --git a/client/webserver/api.go b/client/webserver/api.go
index 2e56a8a9ea..6c107f4fa5 100644
--- a/client/webserver/api.go
+++ b/client/webserver/api.go
@@ -29,7 +29,7 @@ func (s *WebServer) apiDiscoverAccount(w http.ResponseWriter, r *http.Request) {
 		s.writeAPIError(w, fmt.Errorf("password error: %w", err))
 		return
 	}
-	exchangeInfo, paid, err := s.core.DiscoverAccount(form.Addr, pass, cert)
+	exchangeInfo, paid, err := s.core.DiscoverAccount(form.Addr, pass, cert) // TODO: update when paid return removed
 	if err != nil {
 		s.writeAPIError(w, err)
 		return
@@ -115,7 +115,6 @@ func (s *WebServer) apiRegister(w http.ResponseWriter, r *http.Request) {
 		Addr:    reg.Addr,
 		Cert:    []byte(reg.Cert),
 		AppPass: pass,
-		Fee:     reg.Fee,
 		Asset:   &assetID,
 	})
 	if err != nil {
@@ -128,6 +127,41 @@ func (s *WebServer) apiRegister(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, simpleAck(), s.indent)
 }
 
+// apiPostBond is the handler for the '/postbond' API request.
+func (s *WebServer) apiPostBond(w http.ResponseWriter, r *http.Request) {
+	post := new(postBondForm)
+	defer post.Password.Clear()
+	if !readPost(w, r, post) {
+		return
+	}
+	assetID := uint32(42)
+	if post.AssetID != nil {
+		assetID = *post.AssetID
+	}
+	wallet := s.core.WalletState(assetID)
+	if wallet == nil {
+		s.writeAPIError(w, errors.New("no wallet"))
+		return
+	}
+
+	_, err := s.core.PostBond(&core.PostBondForm{
+		Addr:     post.Addr,
+		Cert:     []byte(post.Cert),
+		AppPass:  post.Password,
+		Bond:     post.Bond,
+		Asset:    &assetID,
+		LockTime: post.LockTime,
+	})
+	if err != nil {
+		s.writeAPIError(w, fmt.Errorf("add bond error: %w", err))
+		return
+	}
+	// There was no error paying the fee, but we must wait on confirmations
+	// before informing the DEX of the fee payment. Those results will come
+	// through as a notification.
+	writeJSON(w, simpleAck(), s.indent)
+}
+
 // apiNewWallet is the handler for the '/newwallet' API request.
 func (s *WebServer) apiNewWallet(w http.ResponseWriter, r *http.Request) {
 	form := new(newWalletForm)
@@ -304,7 +338,7 @@ func (s *WebServer) apiAccountExport(w http.ResponseWriter, r *http.Request) {
 		s.writeAPIError(w, fmt.Errorf("password error: %w", err))
 		return
 	}
-	account, err := s.core.AccountExport(pass, form.Host)
+	account, _, err := s.core.AccountExport(pass, form.Host)
 	if err != nil {
 		s.writeAPIError(w, fmt.Errorf("error exporting account: %w", err))
 		return
@@ -313,9 +347,11 @@ func (s *WebServer) apiAccountExport(w http.ResponseWriter, r *http.Request) {
 	res := &struct {
 		OK      bool          `json:"ok"`
 		Account *core.Account `json:"account"`
+		Bonds   []*db.Bond    `json:"bonds"`
 	}{
 		OK:      true,
 		Account: account,
+		// Bonds TODO
 	}
 	writeJSON(w, res, s.indent)
 }
@@ -356,7 +392,7 @@ func (s *WebServer) apiAccountImport(w http.ResponseWriter, r *http.Request) {
 		s.writeAPIError(w, fmt.Errorf("password error: %w", err))
 		return
 	}
-	err = s.core.AccountImport(pass, form.Account)
+	err = s.core.AccountImport(pass, form.Account, nil /* Bonds TODO */)
 	if err != nil {
 		s.writeAPIError(w, fmt.Errorf("error importing account: %w", err))
 		return
diff --git a/client/webserver/live_test.go b/client/webserver/live_test.go
index 0c7ee8ce30..bd4bc9b5ac 100644
--- a/client/webserver/live_test.go
+++ b/client/webserver/live_test.go
@@ -524,6 +524,9 @@ func (c *TCore) Register(r *core.RegisterForm) (*core.RegisterResult, error) {
 	c.reg = r
 	return nil, nil
 }
+func (c *TCore) PostBond(r *core.PostBondForm) (*core.PostBondResult, error) {
+	return nil, nil
+}
 func (c *TCore) EstimateRegistrationTxFee(host string, certI interface{}, assetID uint32) (uint64, error) {
 	return 0, nil
 }
@@ -664,10 +667,10 @@ func (c *TCore) PreOrder(*core.TradeForm) (*core.OrderEstimate, error) {
 	}, nil
 }
 
-func (c *TCore) AccountExport(pw []byte, host string) (*core.Account, error) {
-	return nil, nil
+func (c *TCore) AccountExport(pw []byte, host string) (*core.Account, []*db.Bond, error) {
+	return nil, nil, nil
 }
-func (c *TCore) AccountImport(pw []byte, account core.Account) error {
+func (c *TCore) AccountImport(pw []byte, account *core.Account, bond []*db.Bond) error {
 	return nil
 }
 func (c *TCore) AccountDisable(pw []byte, host string) error { return nil }
diff --git a/client/webserver/types.go b/client/webserver/types.go
index a35aa3337b..9cbe027924 100644
--- a/client/webserver/types.go
+++ b/client/webserver/types.go
@@ -41,8 +41,17 @@ type registrationForm struct {
 	Addr     string           `json:"addr"`
 	Cert     string           `json:"cert"`
 	Password encode.PassBytes `json:"pass"`
-	Fee      uint64           `json:"fee"`
-	AssetID  *uint32          `json:"asset,omitempty"` // prevent out-of-date frontend from paying fee in BTC
+	AssetID  *uint32          `json:"asset,omitempty"` // prevent omission using BTC
+}
+
+// postBondForm is used to post a new bond for an existing DEX account.
+type postBondForm struct {
+	Addr     string           `json:"addr"`
+	Cert     string           `json:"cert"` // may be empty for adding bond to existing account
+	Password encode.PassBytes `json:"pass"`
+	Bond     uint64           `json:"bond"`
+	AssetID  *uint32          `json:"asset,omitempty"` // prevent omission using BTC
+	LockTime uint64           `json:"lockTime"`
 }
 
 type registrationTxFeeForm struct {
@@ -93,7 +102,7 @@ type accountExportForm struct {
 
 type accountImportForm struct {
 	Pass    encode.PassBytes `json:"pw"`
-	Account core.Account     `json:"account"`
+	Account *core.Account    `json:"account"`
 }
 
 type accountDisableForm struct {
diff --git a/client/webserver/webserver.go b/client/webserver/webserver.go
index 2e5d78638e..7d55b95eab 100644
--- a/client/webserver/webserver.go
+++ b/client/webserver/webserver.go
@@ -22,6 +22,7 @@ import (
 
 	"decred.org/dcrdex/client/asset"
 	"decred.org/dcrdex/client/core"
+	"decred.org/dcrdex/client/db"
 	"decred.org/dcrdex/client/websocket"
 	"decred.org/dcrdex/dex"
 	"decred.org/dcrdex/dex/encode"
@@ -76,6 +77,7 @@ type clientCore interface {
 	Network() dex.Network
 	Exchanges() map[string]*core.Exchange
 	Register(*core.RegisterForm) (*core.RegisterResult, error)
+	PostBond(form *core.PostBondForm) (*core.PostBondResult, error)
 	Login(pw []byte) (*core.LoginResult, error)
 	InitializeClient(pw, seed []byte) error
 	AssetBalance(assetID uint32) (*core.WalletBalance, error)
@@ -104,8 +106,8 @@ type clientCore interface {
 	Order(oid dex.Bytes) (*core.Order, error)
 	MaxBuy(host string, base, quote uint32, rate uint64) (*core.MaxOrderEstimate, error)
 	MaxSell(host string, base, quote uint32) (*core.MaxOrderEstimate, error)
-	AccountExport(pw []byte, host string) (*core.Account, error)
-	AccountImport(pw []byte, account core.Account) error
+	AccountExport(pw []byte, host string) (*core.Account, []*db.Bond, error)
+	AccountImport(pw []byte, account *core.Account, bonds []*db.Bond) error
 	AccountDisable(pw []byte, host string) error
 	IsInitialized() bool
 	ExportSeed(pw []byte) ([]byte, error)
@@ -318,6 +320,7 @@ func New(cfg *Config) (*WebServer, error) {
 			apiAuth.Get("/user", s.apiUser)
 			apiAuth.Post("/defaultwalletcfg", s.apiDefaultWalletCfg)
 			apiAuth.Post("/register", s.apiRegister)
+			apiAuth.Post("/postbond", s.apiPostBond)
 			apiAuth.Post("/newwallet", s.apiNewWallet)
 			apiAuth.Post("/openwallet", s.apiOpenWallet)
 			apiAuth.Post("/depositaddress", s.apiNewDepositAddress)
diff --git a/client/webserver/webserver_test.go b/client/webserver/webserver_test.go
index e70557cf78..d7be600ab5 100644
--- a/client/webserver/webserver_test.go
+++ b/client/webserver/webserver_test.go
@@ -18,6 +18,7 @@ import (
 
 	"decred.org/dcrdex/client/asset"
 	"decred.org/dcrdex/client/core"
+	"decred.org/dcrdex/client/db"
 	"decred.org/dcrdex/dex"
 	"decred.org/dcrdex/dex/encode"
 	"decred.org/dcrdex/dex/order"
@@ -57,6 +58,7 @@ type TCore struct {
 	syncFeed         core.BookFeed
 	syncErr          error
 	regErr           error
+	postBondErr      error
 	loginErr         error
 	logoutErr        error
 	initErr          error
@@ -81,6 +83,9 @@ func (c *TCore) DiscoverAccount(dexAddr string, pw []byte, certI interface{}) (*
 	return nil, false, nil
 }
 func (c *TCore) Register(r *core.RegisterForm) (*core.RegisterResult, error) { return nil, c.regErr }
+func (c *TCore) PostBond(r *core.PostBondForm) (*core.PostBondResult, error) {
+	return nil, c.postBondErr
+}
 func (c *TCore) EstimateRegistrationTxFee(host string, certI interface{}, assetID uint32) (uint64, error) {
 	return 0, nil
 }
@@ -163,10 +168,10 @@ func (c *TCore) MaxSell(host string, base, quote uint32) (*core.MaxOrderEstimate
 func (c *TCore) PreOrder(*core.TradeForm) (*core.OrderEstimate, error) {
 	return nil, nil
 }
-func (c *TCore) AccountExport(pw []byte, host string) (*core.Account, error) {
-	return nil, nil
+func (c *TCore) AccountExport(pw []byte, host string) (*core.Account, []*db.Bond, error) {
+	return nil, nil, nil
 }
-func (c *TCore) AccountImport(pw []byte, account core.Account) error {
+func (c *TCore) AccountImport(pw []byte, account *core.Account, bonds []*db.Bond) error {
 	return nil
 }
 func (c *TCore) AccountDisable(pw []byte, host string) error { return nil }