diff --git a/knotserver/xrpc/repo_branch.go b/knotserver/xrpc/repo_branch.go
--- a/knotserver/xrpc/repo_branch.go
+++ b/knotserver/xrpc/repo_branch.go
@@ -32,10 +32,7 @@
 
 	gr, err := git.PlainOpen(repoPath)
 	if err != nil {
-		writeError(w, xrpcerr.NewXrpcError(
-			xrpcerr.WithTag("RepoNotFound"),
-			xrpcerr.WithMessage("repository not found"),
-		), http.StatusNotFound)
+		writeError(w, xrpcerr.RepoNotFoundError, http.StatusNoContent)
 		return
 	}
 
diff --git a/knotserver/xrpc/repo_branches.go b/knotserver/xrpc/repo_branches.go
--- a/knotserver/xrpc/repo_branches.go
+++ b/knotserver/xrpc/repo_branches.go
@@ -31,10 +31,7 @@
 
 	gr, err := git.PlainOpen(repoPath)
 	if err != nil {
-		writeError(w, xrpcerr.NewXrpcError(
-			xrpcerr.WithTag("RepoNotFound"),
-			xrpcerr.WithMessage("repository not found"),
-		), http.StatusNotFound)
+		writeError(w, xrpcerr.RepoNotFoundError, http.StatusNoContent)
 		return
 	}
 
diff --git a/knotserver/xrpc/repo_compare.go b/knotserver/xrpc/repo_compare.go
--- a/knotserver/xrpc/repo_compare.go
+++ b/knotserver/xrpc/repo_compare.go
@@ -38,10 +38,7 @@
 
 	gr, err := git.PlainOpen(repoPath)
 	if err != nil {
-		writeError(w, xrpcerr.NewXrpcError(
-			xrpcerr.WithTag("RepoNotFound"),
-			xrpcerr.WithMessage("repository not found"),
-		), http.StatusNotFound)
+		writeError(w, xrpcerr.RepoNotFoundError, http.StatusNoContent)
 		return
 	}
 
diff --git a/knotserver/xrpc/repo_tags.go b/knotserver/xrpc/repo_tags.go
--- a/knotserver/xrpc/repo_tags.go
+++ b/knotserver/xrpc/repo_tags.go
@@ -33,10 +33,7 @@
 	gr, err := git.PlainOpen(repoPath)
 	if err != nil {
 		x.Logger.Error("failed to open", "error", err)
-		writeError(w, xrpcerr.NewXrpcError(
-			xrpcerr.WithTag("RepoNotFound"),
-			xrpcerr.WithMessage("repository not found"),
-		), http.StatusNoContent)
+		writeError(w, xrpcerr.RepoNotFoundError, http.StatusNoContent)
 		return
 	}
 
diff --git a/knotserver/xrpc/xrpc.go b/knotserver/xrpc/xrpc.go
--- a/knotserver/xrpc/xrpc.go
+++ b/knotserver/xrpc/xrpc.go
@@ -101,18 +101,12 @@
 	// Construct repository path using the same logic as didPath
 	didRepoPath, err := securejoin.SecureJoin(did, repoName)
 	if err != nil {
-		return "", xrpcerr.NewXrpcError(
-			xrpcerr.WithTag("RepoNotFound"),
-			xrpcerr.WithMessage("failed to access repository"),
-		)
+		return "", xrpcerr.RepoNotFoundError
 	}
 
 	repoPath, err := securejoin.SecureJoin(x.Config.Repo.ScanPath, didRepoPath)
 	if err != nil {
-		return "", xrpcerr.NewXrpcError(
-			xrpcerr.WithTag("RepoNotFound"),
-			xrpcerr.WithMessage("failed to access repository"),
-		)
+		return "", xrpcerr.RepoNotFoundError
 	}
 
 	return repoPath, nil
diff --git a/xrpc/errors/errors.go b/xrpc/errors/errors.go
--- a/xrpc/errors/errors.go
+++ b/xrpc/errors/errors.go
@@ -56,6 +56,11 @@
 	WithMessage("owner not set for this service"),
 )
 
+var RepoNotFoundError = NewXrpcError(
+	WithTag("RepoNotFound"),
+	WithMessage("failed to access repository"),
+)
+
 var AuthError = func(err error) XrpcError {
 	return NewXrpcError(
 		WithTag("Auth"),