diff --git a/src/openrouter/schema.ts b/src/openrouter/schema.ts
index 1085113..115f50f 100644
--- a/src/openrouter/schema.ts
+++ b/src/openrouter/schema.ts
@@ -35,3 +35,59 @@ export const extractedFactSchema = {
     required: ["statement", "summary", "source", "confidence", "topics"],
   },
 };
+
+const timeString = {
+  type: "string",
+  pattern: "^([01][0-9]|2[0-3]):[0-5][0-9]$",
+};
+const endTimeString = {
+  type: "string",
+  pattern: "^([01][0-9]|2[0-3]):[0-5][0-9]$|^24:00$",
+};
+
+export const dailyScheduleSchema = {
+  type: "array",
+  minItems: 48,
+  maxItems: 48,
+  items: {
+    type: "object",
+    additionalProperties: false,
+    properties: {
+      start: timeString,
+      end: endTimeString,
+      activity: { type: "string" },
+      notes: { type: "string" },
+    },
+    required: ["start", "end", "activity"],
+  },
+};
+
+export const monthlyScheduleSchema = {
+  type: "array",
+  minItems: 28,
+  maxItems: 31,
+  items: {
+    type: "object",
+    additionalProperties: false,
+    properties: {
+      day: { type: "integer", minimum: 1, maximum: 31 },
+      summary: { type: "string" },
+    },
+    required: ["day", "summary"],
+  },
+};
+
+export const availabilitySchema = {
+  type: "array",
+  minItems: 1,
+  items: {
+    type: "object",
+    additionalProperties: false,
+    properties: {
+      start: timeString,
+      end: endTimeString,
+      status: { type: "string", enum: ["online", "do-not-disturb", "offline"] },
+    },
+    required: ["start", "end", "status"],
+  },
+};