diff --git a/src/frontend/src/lib/api/client.ts b/src/frontend/src/lib/api/client.ts
index 3e891e5..c612985 100644
--- a/src/frontend/src/lib/api/client.ts
+++ b/src/frontend/src/lib/api/client.ts
@@ -189,7 +189,7 @@ export const api = {
 	},
 
 	simulate: {
-		async start(botId: string, config: { token: string; interval_seconds: number; auto_execute: boolean }): Promise<Simulation> {
+		async start(botId: string, config: { token: string; chain?: string; check_interval: number; auto_execute: boolean }): Promise<Simulation> {
 			const response = await fetch(`${API_URL}/bots/${botId}/simulate`, {
 				method: 'POST',
 				headers: getAuthHeaders(),
diff --git a/src/frontend/src/routes/bot/[id]/simulate/+page.svelte b/src/frontend/src/routes/bot/[id]/simulate/+page.svelte
index 0ee24a3..a71572c 100644
--- a/src/frontend/src/routes/bot/[id]/simulate/+page.svelte
+++ b/src/frontend/src/routes/bot/[id]/simulate/+page.svelte
@@ -68,7 +68,8 @@
 		try {
 			const simulation = await api.simulate.start(botId, {
 				token: tokenAddress,
-				interval_seconds: intervalSeconds,
+				chain: 'bsc',
+				check_interval: intervalSeconds,
 				auto_execute: autoExecute
 			});
 			setCurrentSimulation(simulation);