diff --git a/node.go b/node.go
index 7c78e76..8490464 100644
--- a/node.go
+++ b/node.go
@@ -205,7 +205,7 @@ func (c *NodeClient) ListServers(ctx context.Context, n *Node) (sl ServerRefList
 	return
 }
 
-func (c *NodeClient) FindServer(ctx context.Context, name, id string) (s *ServerRef, err error) {
+func (c *NodeClient) FindServer(ctx context.Context, name string, id int) (s *ServerRef, err error) {
 	nl, err := c.List(ctx)
 	if err != nil {
 		return
@@ -223,7 +223,7 @@ func (c *NodeClient) FindServer(ctx context.Context, name, id string) (s *Server
 			continue
 		}
 		for _, s := range sl {
-			if id != "" && s.ID == id {
+			if id != -1 && s.ID == id {
 				return s, nil
 			}
 			if name != "" && s.Name == name {
@@ -241,11 +241,11 @@ func (c *NodeClient) FindServer(ctx context.Context, name, id string) (s *Server
 }
 
 func (c *NodeClient) FindServerByName(ctx context.Context, name string) (s *ServerRef, err error) {
-	return c.FindServer(ctx, name, "")
+	return c.FindServer(ctx, name, -1)
 }
 
-func (c *NodeClient) FindServerByID(ctx context.Context, id string) (s *ServerRef, err error) {
-	if id == "" {
+func (c *NodeClient) FindServerByID(ctx context.Context, id int) (s *ServerRef, err error) {
+	if id == -1 {
 		err = ErrEmptyID
 		return
 	}
diff --git a/pool.go b/pool.go
index 57dffed..228c948 100644
--- a/pool.go
+++ b/pool.go
@@ -7,7 +7,6 @@ import (
 	"errors"
 	"fmt"
 	"net/http"
-	"strconv"
 )
 
 var (
@@ -106,7 +105,7 @@ type poolMembers []poolMember
 func (pms poolMembers) ServerList() (sl ServerRefList) {
 	for _, pm := range pms {
 		sl = append(sl, &ServerRef{
-			ID:   strconv.Itoa(pm.ID),
+			ID:   pm.ID,
 			Name: pm.Name,
 			Node: pm.Node,
 		})
@@ -133,7 +132,7 @@ func (c *PoolClient) ListMembers(ctx context.Context, name string) (sl ServerRef
 	return
 }
 
-func (c *PoolClient) FindServer(ctx context.Context, poolname, servername, id string) (s *ServerRef, err error) {
+func (c *PoolClient) FindServer(ctx context.Context, poolname, servername string, id int) (s *ServerRef, err error) {
 	var pools []string
 	if poolname != "" {
 		pools = append(pools, poolname)
@@ -149,7 +148,7 @@ func (c *PoolClient) FindServer(ctx context.Context, poolname, servername, id st
 			return nil, err
 		}
 		for _, srv := range sl {
-			if id != "" && srv.ID == id {
+			if id != -1 && srv.ID == id {
 				srv.Pool = pool
 				return srv, nil
 			}
@@ -163,10 +162,10 @@ func (c *PoolClient) FindServer(ctx context.Context, poolname, servername, id st
 }
 
 func (c *PoolClient) FindServerByName(ctx context.Context, poolname, servername string) (s *ServerRef, err error) {
-	return c.FindServer(ctx, poolname, servername, "")
+	return c.FindServer(ctx, poolname, servername, -1)
 }
 
-func (c *PoolClient) FindServerByID(ctx context.Context, poolname, id string) (s *ServerRef, err error) {
+func (c *PoolClient) FindServerByID(ctx context.Context, poolname string, id int) (s *ServerRef, err error) {
 	return c.FindServer(ctx, poolname, "", id)
 }
 
diff --git a/scheme.go b/scheme.go
index 1efec5f..9e8062d 100644
--- a/scheme.go
+++ b/scheme.go
@@ -6,6 +6,7 @@ import (
 	"errors"
 	"fmt"
 	"net/url"
+	"strconv"
 	"strings"
 )
 
@@ -17,9 +18,10 @@ const (
 var (
 	ErrInvalidPVEURL = errors.New("invalid pve url scheme")
 	ErrNoID          = errors.New("missing id in url")
+	ErrParsingID     = errors.New("error parsing id in url")
 )
 
-func ParseURL(s string) (pool, node, id string, err error) {
+func ParseURL(s string) (pool, node string, id int, err error) {
 	u, err := url.Parse(s)
 	if err != nil {
 		return
@@ -37,7 +39,11 @@ func ParseURL(s string) (pool, node, id string, err error) {
 		err = ErrNoID
 		return
 	}
-	return u.Host, a[1], a[2], nil
+	id, err = strconv.Atoi(a[2])
+	if err != nil {
+		err = ErrParsingID
+	}
+	return u.Host, a[1], id, nil
 }
 
 func ServerRefFromURL(s string) (ref *ServerRef, err error) {
@@ -53,8 +59,8 @@ func ServerRefFromURL(s string) (ref *ServerRef, err error) {
 	return
 }
 
-func NewURL(pool, node, id string) string {
-	return fmt.Sprintf("%s%s/%s/%s", PVESchemeURL, pool, node, id)
+func NewURL(pool, node string, id int) string {
+	return fmt.Sprintf("%s%s/%s/%d", PVESchemeURL, pool, node, id)
 }
 
 func K8sURL(url string) (string, error) {
diff --git a/server.go b/server.go
index 87fcd61..fb6079e 100644
--- a/server.go
+++ b/server.go
@@ -13,7 +13,7 @@ import (
 var ErrServerNotFound = errors.New("server not found")
 
 type Server struct {
-	ID              string `json:"vmid"`
+	ID              int    `json:"vmid"`
 	Name            string `json:"name"`
 	Node            string
 	Pool            string
@@ -29,7 +29,7 @@ type Server struct {
 }
 
 func (s *Server) UserDataSnippetName() string {
-	return fmt.Sprintf("%s_userdata", s.ID)
+	return fmt.Sprintf("%d_userdata", s.ID)
 }
 
 func (s *Server) UserDataSnippet(storage string) string {
@@ -84,7 +84,7 @@ func (s *Server) Ref() *ServerRef {
 type ServerRefList []*ServerRef
 
 type ServerRef struct {
-	ID   string `json:"vmid"`
+	ID   int    `json:"vmid"`
 	Name string `json:"name"`
 	Node string
 	Pool string
@@ -220,7 +220,7 @@ type ServerClient struct {
 	client *Client
 }
 
-func (c *ServerClient) NextID(ctx context.Context) (id string, err error) {
+func (c *ServerClient) NextID(ctx context.Context) (id int, err error) {
 	req, err := c.client.NewRequest(ctx, "GET", "/cluster/nextid", nil)
 	if err != nil {
 		return
@@ -285,7 +285,7 @@ func (c *ServerClient) GetByURL(ctx context.Context, url string) (s *Server, err
 
 type ServerTemplateOpts struct {
 	Name       string
-	TemplateID string
+	TemplateID int
 	// TemplateNode is optional
 	TemplateNode  string
 	Pool          string
@@ -297,7 +297,7 @@ func (o *ServerTemplateOpts) Validate(ctx context.Context, c *Client) error {
 	if o.Name == "" {
 		return errors.New("missing name")
 	}
-	if o.TemplateID == "" {
+	if o.TemplateID <= 0 {
 		return errors.New("missing template id")
 	}
 	if o.TemplateNode == "" {
@@ -335,7 +335,7 @@ func (c *ServerClient) CreateFromTemplate(ctx context.Context, opts *ServerTempl
 		return
 	}
 	body := opts.body()
-	body["newid"] = nextid
+	body["newid"] = strconv.Itoa(nextid)
 	node := opts.TemplateNode
 	if opts.TargetNode != "" && opts.TemplateNode != opts.TargetNode {
 		node = opts.TargetNode