diff --git a/server/src/repositories/checks/IChecksRepository.ts b/server/src/repositories/checks/IChecksRepository.ts
new file mode 100644
index 000000000..844db9a33
--- /dev/null
+++ b/server/src/repositories/checks/IChecksRepository.ts
@@ -0,0 +1,5 @@
+import type { CheckEntity } from "@/types/domain/index.js";
+
+export interface IChecksRepository {}
+
+export default IChecksRepository;
diff --git a/server/src/types/domain/check.ts b/server/src/types/domain/check.ts
new file mode 100644
index 000000000..e93fef2b2
--- /dev/null
+++ b/server/src/types/domain/check.ts
@@ -0,0 +1,96 @@
+import type { MonitorStatus } from "@/types/domain/index.js";
+
+export interface CheckEntityBase {
+  id: string;
+  monitorId: string;
+  status: MonitorStatus;
+  responseTime: number;
+  createdAt: Date;
+}
+
+// Optional payloads for different monitor types
+export interface PageSpeedPayload {
+  lighthouse?: Record<string, unknown>;
+}
+
+export interface InfraCpuMetrics {
+  physical_core?: number;
+  logical_core?: number;
+  frequency?: number;
+  current_frequency?: number;
+  temperature?: Array<{ sensor?: string; value?: number }>;
+  free_percent?: number;
+  usage_percent?: number;
+}
+
+export interface InfraMemoryMetrics {
+  total_bytes?: number;
+  available_bytes?: number;
+  used_bytes?: number;
+  usage_percent?: number;
+}
+
+export interface InfraDiskMetrics {
+  device?: string;
+  mountpoint?: string;
+  fs_type?: string;
+  total_bytes?: number;
+  used_bytes?: number;
+  usage_percent?: number;
+}
+
+export interface InfraNetMetrics {
+  iface?: string;
+  rx_bytes?: number;
+  tx_bytes?: number;
+}
+
+export interface InfraHostInfo {
+  os?: string;
+  platform?: string;
+  kernel_version?: string;
+  pretty_name?: string;
+}
+
+export interface InfraPayload {
+  system?: {
+    cpu?: InfraCpuMetrics;
+    memory?: InfraMemoryMetrics;
+    disk?: InfraDiskMetrics[];
+    net?: InfraNetMetrics[];
+    host?: InfraHostInfo;
+  };
+}
+
+export interface DockerHealth {
+  healthy?: boolean;
+  source?: string;
+  message?: string;
+}
+
+export interface DockerExposedPort {
+  port?: string;
+  protocol?: string;
+}
+
+export interface DockerContainerSummary {
+  container_id?: string;
+  container_name?: string;
+  status?: string;
+  health?: DockerHealth;
+  running?: boolean;
+  base_image?: string;
+  exposed_ports?: DockerExposedPort[];
+  started_at?: number;
+  finished_at?: number;
+}
+
+export interface DockerPayload {
+  data?: DockerContainerSummary[];
+  capture?: Record<string, unknown>;
+}
+
+export type CheckEntity = CheckEntityBase &
+  Partial<PageSpeedPayload> &
+  Partial<InfraPayload> &
+  Partial<DockerPayload>;
diff --git a/server/src/types/domain/index.ts b/server/src/types/domain/index.ts
index e7790153d..d17cf020e 100644
--- a/server/src/types/domain/index.ts
+++ b/server/src/types/domain/index.ts
@@ -1 +1,2 @@
-export type { Monitor } from "@/types/domain/monitor.js";
+export * from "@/types/domain/monitor.js";
+export * from "@/types/domain/check.js";