diff --git a/internal/api/oas_client_gen.go b/internal/api/oas_client_gen.go
index 91ea82e..4d74b0e 100644
--- a/internal/api/oas_client_gen.go
+++ b/internal/api/oas_client_gen.go
@@ -12,6 +12,7 @@ import (
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/metric"
+	semconv "go.opentelemetry.io/otel/semconv/v1.19.0"
 	"go.opentelemetry.io/otel/trace"
 
 	"github.com/ogen-go/ogen/conv"
@@ -80,6 +81,8 @@ func (c *Client) GetRoot(ctx context.Context) error {
 func (c *Client) sendGetRoot(ctx context.Context) (res *GetRootOK, err error) {
 	otelAttrs := []attribute.KeyValue{
 		otelogen.OperationID("getRoot"),
+		semconv.HTTPMethodKey.String("GET"),
+		semconv.HTTPRouteKey.String("/"),
 	}
 
 	// Run stopwatch.
@@ -151,6 +154,8 @@ func (c *Client) GetWallpaper(ctx context.Context, params GetWallpaperParams) (G
 func (c *Client) sendGetWallpaper(ctx context.Context, params GetWallpaperParams) (res GetWallpaperRes, err error) {
 	otelAttrs := []attribute.KeyValue{
 		otelogen.OperationID("getWallpaper"),
+		semconv.HTTPMethodKey.String("GET"),
+		semconv.HTTPRouteKey.String("/wallpapers/{id}"),
 	}
 
 	// Run stopwatch.
@@ -243,6 +248,8 @@ func (c *Client) GetWallpaperTags(ctx context.Context) (GetWallpaperTagsRes, err
 func (c *Client) sendGetWallpaperTags(ctx context.Context) (res GetWallpaperTagsRes, err error) {
 	otelAttrs := []attribute.KeyValue{
 		otelogen.OperationID("getWallpaperTags"),
+		semconv.HTTPMethodKey.String("GET"),
+		semconv.HTTPRouteKey.String("/wallpapers/tags"),
 	}
 
 	// Run stopwatch.
@@ -314,6 +321,8 @@ func (c *Client) GetWallpapers(ctx context.Context, params GetWallpapersParams)
 func (c *Client) sendGetWallpapers(ctx context.Context, params GetWallpapersParams) (res GetWallpapersRes, err error) {
 	otelAttrs := []attribute.KeyValue{
 		otelogen.OperationID("getWallpapers"),
+		semconv.HTTPMethodKey.String("GET"),
+		semconv.HTTPRouteKey.String("/wallpapers"),
 	}
 
 	// Run stopwatch.
@@ -463,6 +472,8 @@ func (c *Client) GetWallpapersByTag(ctx context.Context, params GetWallpapersByT
 func (c *Client) sendGetWallpapersByTag(ctx context.Context, params GetWallpapersByTagParams) (res GetWallpapersByTagRes, err error) {
 	otelAttrs := []attribute.KeyValue{
 		otelogen.OperationID("getWallpapersByTag"),
+		semconv.HTTPMethodKey.String("GET"),
+		semconv.HTTPRouteKey.String("/wallpapers/tags/{tag}"),
 	}
 
 	// Run stopwatch.
diff --git a/internal/api/oas_handlers_gen.go b/internal/api/oas_handlers_gen.go
index 9916819..2db25a4 100644
--- a/internal/api/oas_handlers_gen.go
+++ b/internal/api/oas_handlers_gen.go
@@ -7,12 +7,14 @@ import (
 	"net/http"
 	"time"
 
+	"github.com/go-faster/errors"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/codes"
 	"go.opentelemetry.io/otel/metric"
 	semconv "go.opentelemetry.io/otel/semconv/v1.19.0"
 	"go.opentelemetry.io/otel/trace"
 
+	ht "github.com/ogen-go/ogen/http"
 	"github.com/ogen-go/ogen/middleware"
 	"github.com/ogen-go/ogen/ogenerrors"
 	"github.com/ogen-go/ogen/otelogen"
@@ -95,7 +97,9 @@ func (s *Server) handleGetRootRequest(args [0]string, argsEscaped bool, w http.R
 
 	if err := encodeGetRootResponse(response, w, span); err != nil {
 		recordError("EncodeResponse", err)
-		s.cfg.ErrorHandler(ctx, w, r, err)
+		if !errors.Is(err, ht.ErrInternalServerErrorResponse) {
+			s.cfg.ErrorHandler(ctx, w, r, err)
+		}
 		return
 	}
 }
@@ -198,7 +202,9 @@ func (s *Server) handleGetWallpaperRequest(args [1]string, argsEscaped bool, w h
 
 	if err := encodeGetWallpaperResponse(response, w, span); err != nil {
 		recordError("EncodeResponse", err)
-		s.cfg.ErrorHandler(ctx, w, r, err)
+		if !errors.Is(err, ht.ErrInternalServerErrorResponse) {
+			s.cfg.ErrorHandler(ctx, w, r, err)
+		}
 		return
 	}
 }
@@ -282,7 +288,9 @@ func (s *Server) handleGetWallpaperTagsRequest(args [0]string, argsEscaped bool,
 
 	if err := encodeGetWallpaperTagsResponse(response, w, span); err != nil {
 		recordError("EncodeResponse", err)
-		s.cfg.ErrorHandler(ctx, w, r, err)
+		if !errors.Is(err, ht.ErrInternalServerErrorResponse) {
+			s.cfg.ErrorHandler(ctx, w, r, err)
+		}
 		return
 	}
 }
@@ -397,7 +405,9 @@ func (s *Server) handleGetWallpapersRequest(args [0]string, argsEscaped bool, w
 
 	if err := encodeGetWallpapersResponse(response, w, span); err != nil {
 		recordError("EncodeResponse", err)
-		s.cfg.ErrorHandler(ctx, w, r, err)
+		if !errors.Is(err, ht.ErrInternalServerErrorResponse) {
+			s.cfg.ErrorHandler(ctx, w, r, err)
+		}
 		return
 	}
 }
@@ -504,7 +514,9 @@ func (s *Server) handleGetWallpapersByTagRequest(args [1]string, argsEscaped boo
 
 	if err := encodeGetWallpapersByTagResponse(response, w, span); err != nil {
 		recordError("EncodeResponse", err)
-		s.cfg.ErrorHandler(ctx, w, r, err)
+		if !errors.Is(err, ht.ErrInternalServerErrorResponse) {
+			s.cfg.ErrorHandler(ctx, w, r, err)
+		}
 		return
 	}
 }
diff --git a/internal/api/oas_response_encoders_gen.go b/internal/api/oas_response_encoders_gen.go
index ee52523..86e186d 100644
--- a/internal/api/oas_response_encoders_gen.go
+++ b/internal/api/oas_response_encoders_gen.go
@@ -30,6 +30,7 @@ func encodeGetWallpaperResponse(response GetWallpaperRes, w http.ResponseWriter,
 		if _, err := e.WriteTo(w); err != nil {
 			return errors.Wrap(err, "write")
 		}
+
 		return nil
 
 	case *GetWallpaperNotFound:
@@ -55,6 +56,7 @@ func encodeGetWallpaperTagsResponse(response GetWallpaperTagsRes, w http.Respons
 		if _, err := e.WriteTo(w); err != nil {
 			return errors.Wrap(err, "write")
 		}
+
 		return nil
 
 	case *GetWallpaperTagsNotFound:
@@ -80,6 +82,7 @@ func encodeGetWallpapersResponse(response GetWallpapersRes, w http.ResponseWrite
 		if _, err := e.WriteTo(w); err != nil {
 			return errors.Wrap(err, "write")
 		}
+
 		return nil
 
 	case *GetWallpapersNotFound:
@@ -105,6 +108,7 @@ func encodeGetWallpapersByTagResponse(response GetWallpapersByTagRes, w http.Res
 		if _, err := e.WriteTo(w); err != nil {
 			return errors.Wrap(err, "write")
 		}
+
 		return nil
 
 	case *GetWallpapersByTagNotFound:
diff --git a/internal/api/oas_schemas_gen.go b/internal/api/oas_schemas_gen.go
index 972cb8f..646d58a 100644
--- a/internal/api/oas_schemas_gen.go
+++ b/internal/api/oas_schemas_gen.go
@@ -46,6 +46,13 @@ const (
 	GetWallpapersPrev1 GetWallpapersPrev = 1
 )
 
+// AllValues returns all GetWallpapersPrev values.
+func (GetWallpapersPrev) AllValues() []GetWallpapersPrev {
+	return []GetWallpapersPrev{
+		GetWallpapersPrev1,
+	}
+}
+
 type ID string
 
 // Ref: #/components/schemas/Links