diff --git a/src/lib/components/DevButtons.svelte b/src/lib/components/DevButtons.svelte
index 8770feb..919c579 100644
--- a/src/lib/components/DevButtons.svelte
+++ b/src/lib/components/DevButtons.svelte
@@ -6,14 +6,14 @@
 
 	let seeding = $state(false);
 
-	async function seedHistory() {
+	async function seedHistory(days: number = 10) {
 		if (!browser || !anonymousId || seeding) return;
 		seeding = true;
 		try {
 			const response = await fetch("/api/dev/seed-history", {
 				method: "POST",
 				headers: { "Content-Type": "application/json" },
-				body: JSON.stringify({ anonymousId })
+				body: JSON.stringify({ anonymousId, days })
 			});
 			const result = await response.json();
 			alert(
@@ -113,7 +113,15 @@
 
 	<Button
 		variant="secondary"
-		onclick={seedHistory}
+		onclick={() => seedHistory(1)}
+		disabled={seeding}
+		class="w-full py-4 md:py-2"
+	>
+		{seeding ? "Seeding..." : "Add 1 Day of History"}
+	</Button>
+	<Button
+		variant="secondary"
+		onclick={() => seedHistory(10)}
 		disabled={seeding}
 		class="w-full py-4 md:py-2"
 	>
diff --git a/src/routes/api/dev/seed-history/+server.ts b/src/routes/api/dev/seed-history/+server.ts
index 3ef1a14..2bca72e 100644
--- a/src/routes/api/dev/seed-history/+server.ts
+++ b/src/routes/api/dev/seed-history/+server.ts
@@ -19,7 +19,7 @@ export const POST: RequestHandler = async ({ request }) => {
 	}
 
 	try {
-		const { anonymousId } = await request.json();
+		const { anonymousId, days = 10 } = await request.json();
 
 		if (!anonymousId || typeof anonymousId !== 'string') {
 			return json({ error: 'anonymousId required' }, { status: 400 });
@@ -29,7 +29,7 @@ export const POST: RequestHandler = async ({ request }) => {
 		const inserted: string[] = [];
 		const skipped: string[] = [];
 
-		for (let i = 1; i <= 10; i++) {
+		for (let i = 1; i <= days; i++) {
 			const d = new Date(today);
 			d.setDate(d.getDate() - i);
 			const date = d.toLocaleDateString('en-CA'); // YYYY-MM-DD