diff --git a/db/db.go b/db/db.go
index fa6de28..2cb70ae 100644
--- a/db/db.go
+++ b/db/db.go
@@ -3,6 +3,7 @@ package db
 import (
 	"go-eve-pi/esi"
 	"go-eve-pi/options"
+	"go-eve-pi/types"
 	"path/filepath"
 
 	"gorm.io/driver/sqlite"
@@ -14,8 +15,8 @@ import (
 type DB interface {
 	DB() *gorm.DB
 	Raw(sql string, args ...any) *gorm.DB
-	GetCharacterByName(characterName string) (*esi.Character, error)
-	SaveCharacter(character *esi.Character) error
+	GetCharacterByName(characterName string) (*types.Character, error)
+	SaveCharacter(character *types.Character) error
 	AutoMigrate(dst ...interface{}) error
 	GetCacheEntry(urlHash string) (*esi.CacheEntry, error)
 	SaveCacheEntry(entry *esi.CacheEntry) error
@@ -59,9 +60,9 @@ func (db *DBWrapper) DB() *gorm.DB {
 	return db.db
 }
 
-func (db *DBWrapper) GetCharacterByName(characterName string) (*esi.Character, error) {
+func (db *DBWrapper) GetCharacterByName(characterName string) (*types.Character, error) {
 	logger.Debug("Fetching token for character %s from database", characterName)
-	var char esi.Character
+	var char types.Character
 	err := db.db.Where("character_name = ?", characterName).First(&char).Error
 	if err != nil {
 		logger.Debug("No token found for character %s: %v", characterName, err)
@@ -71,7 +72,7 @@ func (db *DBWrapper) GetCharacterByName(characterName string) (*esi.Character, e
 	return &char, nil
 }
 
-func (db *DBWrapper) SaveCharacter(character *esi.Character) error {
+func (db *DBWrapper) SaveCharacter(character *types.Character) error {
 	logger.Debug("Saving token for character %s to database", character.CharacterName)
 	err := db.db.Save(character).Error
 	if err != nil {
diff --git a/esi/sso.go b/esi/sso.go
index 610eab6..42cc0f5 100644
--- a/esi/sso.go
+++ b/esi/sso.go
@@ -16,6 +16,7 @@ import (
 	"sync"
 	"time"
 
+	"go-eve-pi/types"
 	"gorm.io/gorm"
 
 	logger "git.site.quack-lab.dev/dave/cylogger"
@@ -28,14 +29,11 @@ const (
 	issuerTokenURL     = "https://login.eveonline.com/v2/oauth/token"
 )
 
-type Character struct {
-	ID            int64  `gorm:"primaryKey"` // EVE character ID from JWT token
-	CharacterName string `gorm:"uniqueIndex"`
-	AccessToken   string
-	RefreshToken  string
-	ExpiresAt     time.Time
-	UpdatedAt     time.Time
-	CreatedAt     time.Time
+// DB interface for database operations
+type DB interface {
+	GetCharacterByName(characterName string) (*types.Character, error)
+	SaveCharacter(character *types.Character) error
+	AutoMigrate(dst ...interface{}) error
 }
 
 type SSO struct {
@@ -54,15 +52,9 @@ type SSO struct {
 }
 
 // NewSSO creates a new SSO instance
-func NewSSO(clientID, redirectURI string, scopes []string) (*SSO, error) {
+func NewSSO(clientID, redirectURI string, scopes []string, db DB) (*SSO, error) {
 	logger.Info("Creating new SSO instance for clientID %s with redirectURI %s and scopes %v", clientID, redirectURI, scopes)
 
-	db, err := GetDB()
-	if err != nil {
-		logger.Error("Failed to get database connection %v", err)
-		return nil, err
-	}
-
 	s := &SSO{
 		clientID:    clientID,
 		redirectURI: redirectURI,
@@ -88,7 +80,7 @@ func (s *SSO) SetRouter(r *router.Router) {
 
 func (s *SSO) initDB() error {
 	logger.Debug("Initializing SSO database schema")
-	err := s.db.AutoMigrate(&Character{})
+	err := s.db.AutoMigrate(&types.Character{})
 	if err != nil {
 		logger.Error("Failed to migrate Token table %v", err)
 		return err
@@ -100,7 +92,7 @@ func (s *SSO) initDB() error {
 // GetCharacter returns a valid character object for the given character name
 // If no token exists, it will start the OAuth flow
 // If token is expired, it will refresh it automatically
-func (s *SSO) GetCharacter(ctx context.Context, characterName string) (Character, error) {
+func (s *SSO) GetCharacter(ctx context.Context, characterName string) (types.Character, error) {
 	logger.Debug("Getting token for character %s", characterName)
 	s.mu.Lock()
 	defer s.mu.Unlock()
@@ -112,16 +104,16 @@ func (s *SSO) GetCharacter(ctx context.Context, characterName string) (Character
 			logger.Info("No existing token found for character %s, starting authentication flow", characterName)
 			// No token exists, need to authenticate
 			if err := s.startAuthFlow(ctx, characterName); err != nil {
-				return Character{}, err
+				return types.Character{}, err
 			}
 			// After authentication, fetch the token from DB
 			char, err = s.db.GetCharacterByName(characterName)
 			if err != nil {
-				return Character{}, err
+				return types.Character{}, err
 			}
 			logger.Info("Successfully authenticated character %s", characterName)
 		} else {
-			return Character{}, err
+			return types.Character{}, err
 		}
 	} else {
 		logger.Debug("Found existing token for character %s, expires at %v", characterName, char.ExpiresAt)
@@ -148,12 +140,12 @@ func (s *SSO) GetCharacter(ctx context.Context, characterName string) (Character
 			logger.Warning("Token refresh failed for character %s, re-authenticating: %v", characterName, err)
 			// Refresh failed, need to re-authenticate
 			if err := s.startAuthFlow(ctx, characterName); err != nil {
-				return Character{}, err
+				return types.Character{}, err
 			}
 			// After re-authentication, fetch the token from DB
 			char, err = s.db.GetCharacterByName(characterName)
 			if err != nil {
-				return Character{}, err
+				return types.Character{}, err
 			}
 			logger.Info("Successfully re-authenticated character %s", characterName)
 		} else {
@@ -320,7 +312,7 @@ func (s *SSO) waitForCallback() (code, state string, err error) {
 	}
 }
 
-func (s *SSO) exchangeCodeForToken(ctx context.Context, code, verifier string) (*Character, error) {
+func (s *SSO) exchangeCodeForToken(ctx context.Context, code, verifier string) (*types.Character, error) {
 	logger.Debug("Exchanging authorization code for access token")
 	form := url.Values{}
 	form.Set("grant_type", "authorization_code")
@@ -356,7 +348,7 @@ func (s *SSO) exchangeCodeForToken(ctx context.Context, code, verifier string) (
 	name, _ := parseTokenCharacter(tr.AccessToken)
 	logger.Info("Successfully exchanged code for token, character: %s", name)
 
-	return &Character{
+	return &types.Character{
 		CharacterName: name,
 		AccessToken:   tr.AccessToken,
 		RefreshToken:  tr.RefreshToken,
@@ -364,7 +356,7 @@ func (s *SSO) exchangeCodeForToken(ctx context.Context, code, verifier string) (
 	}, nil
 }
 
-func (s *SSO) refreshToken(ctx context.Context, char *Character) error {
+func (s *SSO) refreshToken(ctx context.Context, char *types.Character) error {
 	logger.Debug("Refreshing token for character %s", char.CharacterName)
 	form := url.Values{}
 	form.Set("grant_type", "refresh_token")
diff --git a/routes/routes.go b/routes/routes.go
index df2881a..dd061fd 100644
--- a/routes/routes.go
+++ b/routes/routes.go
@@ -4,9 +4,9 @@ import (
 	"context"
 	"encoding/json"
 	"strconv"
-	"time"
 
 	"go-eve-pi/esi"
+	"go-eve-pi/types"
 	wh "go-eve-pi/webhook"
 
 	logger "git.site.quack-lab.dev/dave/cylogger"
@@ -23,18 +23,7 @@ type RouteHandler struct {
 
 // SSOInterface defines the interface for SSO operations
 type SSOInterface interface {
-	GetCharacter(ctx context.Context, characterName string) (Character, error)
-}
-
-// Character represents a character with authentication info
-type Character struct {
-	ID            int64  `gorm:"primaryKey"`
-	CharacterName string `gorm:"uniqueIndex"`
-	AccessToken   string
-	RefreshToken  string
-	ExpiresAt     time.Time
-	UpdatedAt     time.Time
-	CreatedAt     time.Time
+	GetCharacter(ctx context.Context, characterName string) (types.Character, error)
 }
 
 // NewRouteHandler creates a new route handler with dependencies
diff --git a/types/character.go b/types/character.go
new file mode 100644
index 0000000..acd5d5a
--- /dev/null
+++ b/types/character.go
@@ -0,0 +1,14 @@
+package types
+
+import "time"
+
+// Character represents a character with authentication info
+type Character struct {
+	ID            int64  `gorm:"primaryKey"` // EVE character ID from JWT token
+	CharacterName string `gorm:"uniqueIndex"`
+	AccessToken   string
+	RefreshToken  string
+	ExpiresAt     time.Time
+	UpdatedAt     time.Time
+	CreatedAt     time.Time
+}