diff --git a/dev/api.go b/dev/api.go
new file mode 100644
index 0000000..7e55a68
--- /dev/null
+++ b/dev/api.go
@@ -0,0 +1,69 @@
+package dev
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"math/rand"
+	"strconv"
+
+	"github.com/gofrs/uuid"
+	"git.grassecon.net/grassrootseconomics/sarafu-api/models"
+)
+
+const (
+	pubKeyLen int = 20
+)
+
+type account struct {
+	balance int
+	nonce int
+}
+
+type DevAccountService struct {
+	accounts map[string]account
+	accountsTrack map[string]string
+//	accountsSession map[string]string
+}
+
+func NewDevAccountService() *DevAccountService {
+	return &DevAccountService{
+		accounts: make(map[string]account),
+		accountsTrack: make(map[string]string),
+		//accountsSession: make(map[string]string),
+	}
+}
+
+func (das *DevAccountService) CheckBalance(ctx context.Context, publicKey string) (*models.BalanceResult, error) {
+	acc, ok := das.accounts[publicKey]
+	if !ok {
+		return nil, fmt.Errorf("account not found (publickey): %v", publicKey)
+	}
+	return &models.BalanceResult {
+		Balance: strconv.Itoa(acc.balance),
+		Nonce: json.Number(strconv.Itoa(acc.nonce)),
+	}, nil
+}
+
+
+func (das *DevAccountService) CreateAccount(ctx context.Context) (*models.AccountResult, error) {
+	var b [pubKeyLen]byte
+	uid, err := uuid.NewV4()
+	if err != nil {
+		return nil, err
+	}
+	c, err := rand.Read(b[:])
+	if err != nil {
+		return nil, err
+	}
+	if c != pubKeyLen {
+		return nil, fmt.Errorf("short read: %d", c)
+	}
+	pubKey := fmt.Sprintf("0x%x", b)
+	das.accounts[pubKey] = account{}
+	das.accountsTrack[uid.String()] = pubKey
+	return &models.AccountResult{
+		PublicKey: pubKey,
+		TrackingId: uid.String(),
+	}, nil
+}
diff --git a/go.mod b/go.mod
index eef104c..38dac03 100644
--- a/go.mod
+++ b/go.mod
@@ -4,6 +4,7 @@ go 1.23.4
 
 require (
 	git.grassecon.net/grassrootseconomics/visedriver v0.8.0-beta.10.0.20250112121325-9e4c65c8b4d1
+	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/grassrootseconomics/eth-custodial v1.3.0-beta
 	github.com/grassrootseconomics/ussd-data-service v1.2.0-beta
 	github.com/stretchr/testify v1.9.0
diff --git a/go.sum b/go.sum
index 180fc40..8307835 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ git.grassecon.net/grassrootseconomics/visedriver v0.8.0-beta.10.0.20250112121325
 git.grassecon.net/grassrootseconomics/visedriver v0.8.0-beta.10.0.20250112121325-9e4c65c8b4d1/go.mod h1:E6W7ZOa7ZvVr0Bc5ot0LNSwpSPYq4hXlAIvEPy3AJ7U=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1YrTJupqA=
+github.com/gofrs/uuid v4.4.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
 github.com/grassrootseconomics/eth-custodial v1.3.0-beta h1:twrMBhl89GqDUL9PlkzQxMP/6OST1BByrNDj+rqXDmU=
 github.com/grassrootseconomics/eth-custodial v1.3.0-beta/go.mod h1:7uhRcdnJplX4t6GKCEFkbeDhhjlcaGJeJqevbcvGLZo=
 github.com/grassrootseconomics/ussd-data-service v1.2.0-beta h1:fn1gwbWIwHVEBtUC2zi5OqTlfI/5gU1SMk0fgGixIXk=