diff --git a/docs/releases/unreleased.md b/docs/releases/unreleased.md
index 3eee5db9..93f93035 100644
--- a/docs/releases/unreleased.md
+++ b/docs/releases/unreleased.md
@@ -26,6 +26,7 @@ Example:
 
 ## Fixed
 
+- Updated generated `_types/task.md` mdbase schema output so `dateCreated` and `dateModified` include generated values (`now` and `now_on_write`) for automatic timestamp handling on create/write
 - Fixed documentation deployment CI failures caused by `docs-builder/src/js/main.js` being excluded by a broad `.gitignore` `main.js` rule
   - Added a specific unignore rule so the docs site client script is tracked and available in GitHub Actions builds
 - Reduced long-running performance risk from calendar sync token persistence by avoiding full runtime settings side-effects during background sync writes
diff --git a/src/services/MdbaseSpecService.ts b/src/services/MdbaseSpecService.ts
index c3a4a04c..4989e0d7 100644
--- a/src/services/MdbaseSpecService.ts
+++ b/src/services/MdbaseSpecService.ts
@@ -151,8 +151,15 @@ export class MdbaseSpecService {
 			description: "Estimated time in minutes.",
 		});
 		this.addRoleField(lines, "completedDate", { type: "date" });
-		this.addRoleField(lines, "dateCreated", { type: "datetime", required: true });
-		this.addRoleField(lines, "dateModified", { type: "datetime" });
+		this.addRoleField(lines, "dateCreated", {
+			type: "datetime",
+			required: true,
+			generated: "now",
+		});
+		this.addRoleField(lines, "dateModified", {
+			type: "datetime",
+			generated: "now_on_write",
+		});
 		this.addRoleField(lines, "recurrence", { type: "string" });
 		this.addRoleField(lines, "recurrenceAnchor", {
 			type: "enum",
@@ -290,6 +297,9 @@ export class MdbaseSpecService {
 		if (def.required) {
 			lines.push(`${pad}required: true`);
 		}
+		if (def.generated) {
+			lines.push(`${pad}generated: ${def.generated}`);
+		}
 		if (def.values) {
 			lines.push(`${pad}values: [${def.values.join(", ")}]`);
 		}
@@ -458,6 +468,7 @@ export class MdbaseSpecService {
 interface FieldDef {
 	type: string;
 	required?: boolean;
+	generated?: string;
 	values?: string[];
 	tn_completed_values?: string[];
 	default?: string;
diff --git a/tests/unit/services/MdbaseSpecService.test.ts b/tests/unit/services/MdbaseSpecService.test.ts
index 54433bfc..4bc042b0 100644
--- a/tests/unit/services/MdbaseSpecService.test.ts
+++ b/tests/unit/services/MdbaseSpecService.test.ts
@@ -391,11 +391,13 @@ describe("MdbaseSpecService", () => {
 			const block = getFieldBlock(fm, "dateCreated");
 			expect(block).toContain("type: datetime");
 			expect(block).toContain("required: true");
+			expect(block).toContain("generated: now");
 		});
 
 		it("should define dateModified as datetime", () => {
 			const block = getFieldBlock(fm, "dateModified");
 			expect(block).toContain("type: datetime");
+			expect(block).toContain("generated: now_on_write");
 		});
 
 		it("should define recurrence as string", () => {