diff --git a/ent/previewcard.go b/ent/previewcard.go
new file mode 100644
index 0000000..21e58dc
--- /dev/null
+++ b/ent/previewcard.go
@@ -0,0 +1,24 @@
+package ent
+
+import (
+	"sourcecode.social/reiver/go-opt"
+	"sourcecode.social/reiver/go-nul"
+)
+
+type PreviewCard struct {
+	URL          opt.Optional[string] `json:"url"`
+	Title        opt.Optional[string] `json:"title"`
+	Description  opt.Optional[string] `json:"description"`
+	Type         opt.Optional[string] `json:"type"`
+	AuthorName   opt.Optional[string] `json:"author_name"`
+	AuthorURL    opt.Optional[string] `json:"author_url"`
+	ProviderName opt.Optional[string] `json:"provider_name"`
+	ProviderURL  opt.Optional[string] `json:"provider_url"`
+	HTML         opt.Optional[string] `json:"html"`
+	Width        opt.Optional[string] `json:"width"`
+	Height       opt.Optional[string] `json:"height"`
+	Image        nul.Nullable[string] `json:"image"`
+	EmbedURL     opt.Optional[string] `json:"embed_url"`
+	BlurHash     nul.Nullable[string] `json:"blurhash"`
+	History    []History              `json:"history"`
+}