diff --git a/packages/lib/api.ts b/packages/lib/api.ts
index 7cf8755f9..6833504c3 100644
--- a/packages/lib/api.ts
+++ b/packages/lib/api.ts
@@ -28,6 +28,7 @@ import {
 	SettingsRequestSchema,
 	UpdateContainerTagSettingsRequestSchema,
 } from "../validation/api"
+import { SearchFiltersSchema } from "../validation/schemas"
 
 const UpdateSettingsResponseSchema = z.object({
 	orgId: z.string(),
@@ -252,6 +253,7 @@ export const apiSchema = createSchema({
 				page: z.number().optional(),
 				status: z.string().optional(),
 				containerTags: z.array(z.string()).optional(),
+				filters: SearchFiltersSchema.optional(),
 			})
 			.optional(),
 		output: ListMemoriesResponseSchema,
diff --git a/packages/validation/api.ts b/packages/validation/api.ts
index f066bfcd4..ae46f6dd4 100644
--- a/packages/validation/api.ts
+++ b/packages/validation/api.ts
@@ -6,17 +6,11 @@ import {
 	MemoryEntrySchema,
 	OrganizationSettingsSchema,
 	RequestTypeEnum,
+	SearchFiltersSchema,
 } from "./schemas"
 
 export const MetadataSchema = BaseMetadataSchema
 
-export const SearchFiltersSchema = z
-	.object({
-		AND: z.array(z.unknown()).optional(),
-		OR: z.array(z.unknown()).optional(),
-	})
-	.or(z.record(z.unknown()))
-
 const exampleMetadata: Record<string, string | number | boolean> = {
 	category: "technology",
 	isPublic: true,
@@ -247,10 +241,18 @@ export const ListMemoriesQuerySchema = z
 					"Optional tags this memory should be containerized by. This can be an ID for your user, a project ID, or any other identifier you wish to use to group memories.",
 				example: ["user_123", "project_123"],
 			}),
-		// TODO: Improve filter schema
 		filters: z
 			.string()
 			.optional()
+			.transform((raw,ctx) => {
+			if (!raw) return undefined
+				try {
+					return SearchFiltersSchema.parse(JSON.parse(raw))
+				} catch {
+					ctx.addIssue({ code: z.ZodIssueCode.custom, message: "Invalid filters JSON" })
+					return z.NEVER
+				}
+			})
 			.openapi({
 				description: "Optional filters to apply to the search",
 				example: JSON.stringify({
diff --git a/packages/validation/schemas.ts b/packages/validation/schemas.ts
index b9c41c5f1..4d89db7f0 100644
--- a/packages/validation/schemas.ts
+++ b/packages/validation/schemas.ts
@@ -8,6 +8,71 @@ export type Metadata = z.infer<typeof MetadataSchema>
 export const VisibilityEnum = z.enum(["public", "private", "unlisted"])
 export type Visibility = z.infer<typeof VisibilityEnum>
 
+const MetadataKeySchema = z
+  .string()
+  .min(1)
+  .max(64)
+  .regex(/^[a-zA-Z0-9_.-]+$/, "Invalid metadata key")
+
+const MetadataValueSchema = z.union([z.string(), z.number(), z.boolean()])
+
+const StringEqualityFilterSchema = z.object({
+  key: MetadataKeySchema,
+  value: MetadataValueSchema,
+  negate: z.boolean().optional(),
+})
+
+const StringContainsFilterSchema = z.object({
+  filterType: z.literal("string_contains"),
+  key: MetadataKeySchema,
+  value: z.string(),
+  negate: z.boolean().optional(),
+  ignoreCase: z.boolean().optional(),
+})
+
+const NumericOperatorSchema = z.union([z.literal("="), z.literal("!="), z.literal("<"), z.literal("<="), z.literal(">"), z.literal(">=")])
+
+const NumericFilterSchema = z.object({
+  filterType: z.literal("numeric"),
+  key: MetadataKeySchema,
+  value: z.string(),
+  numericOperator: NumericOperatorSchema,
+  negate: z.boolean().optional(),
+})
+
+const ArrayContainsFilterSchema = z.object({
+  filterType: z.literal("array_contains"),
+  key: MetadataKeySchema,
+  value: z.string(),
+  negate: z.boolean().optional(),
+})
+
+const FilterConditionSchema = z.discriminatedUnion("filterType", [
+  StringContainsFilterSchema,
+  NumericFilterSchema,
+  ArrayContainsFilterSchema,
+]).or(StringEqualityFilterSchema) 
+
+type FilterExpression =
+  | z.infer<typeof FilterConditionSchema>
+  | { AND: FilterExpression[] }
+  | { OR: FilterExpression[] }
+
+export const FilterExpressionSchema: z.ZodType<FilterExpression> = z.lazy(() =>
+  z.union([
+    FilterConditionSchema,
+    z.object({ AND: z.array(FilterExpressionSchema).min(1) }),
+    z.object({ OR: z.array(FilterExpressionSchema).min(1) }),
+  ])
+)
+
+export const SearchFiltersSchema = z.union([
+  FilterExpressionSchema,
+  z.object({ AND: z.array(FilterExpressionSchema).min(1) }),
+  z.object({ OR: z.array(FilterExpressionSchema).min(1) }),
+])
+
+
 export const DocumentTypeEnum = z.enum([
 	"text",
 	"pdf",