diff --git a/src/lib/validations.ts b/src/lib/validations.ts
index bdf4707..b8f9a90 100644
--- a/src/lib/validations.ts
+++ b/src/lib/validations.ts
@@ -203,6 +203,26 @@ export const KeywordCloudResponseSchema = z.object({
   error: z.string().optional(),
 })
 
+// ================================
+// AI Timeline Schemas
+// ================================
+
+export const AIEventInputSchema = z.object({
+  title: z.string().min(1).max(200),
+  titleEn: z.string().max(200).optional(),
+  eventDate: z.string().datetime(),
+  description: z.string().min(10).max(500),
+  descriptionEn: z.string().max(500).optional(),
+  imageUrl: z.string().url(),
+  sourceUrl: z.string().url().optional(),
+})
+
+export const AIEventQuerySchema = z.object({
+  year: z.string().regex(/^\d{4}$/).optional(),
+  limit: z.string().regex(/^\d+$/).transform(Number).optional(),
+  offset: z.string().regex(/^\d+$/).transform(Number).optional(),
+})
+
 // ================================
 // Types
 // ================================
@@ -211,4 +231,6 @@ export type KeywordInput = z.infer<typeof KeywordInputSchema>
 export type BatchKeywordsRequest = z.infer<typeof BatchKeywordsRequestSchema>
 export type Quarter = z.infer<typeof QuarterSchema>
 export type VisualStyleRule = z.infer<typeof VisualStyleRuleSchema>
+export type AIEventInput = z.infer<typeof AIEventInputSchema>
+export type AIEventQuery = z.infer<typeof AIEventQuerySchema>
 export type KeywordCloudResponse = z.infer<typeof KeywordCloudResponseSchema>