diff --git a/src/validator/rpc/interface.ts b/src/validator/rpc/interface.ts
new file mode 100644
index 000000000000..b6fef94bc890
--- /dev/null
+++ b/src/validator/rpc/interface.ts
@@ -0,0 +1,44 @@
+import {BeaconAPI} from "../../rpc/api";
+import {AttestationData, BeaconState, Slot} from "../../types";
+
+export interface RpcClient {
+
+  beacon: BeaconAPI;
+
+  //validator: ValidatorAPI
+
+  /**
+   * Initiates connection to rpc server.
+   */
+  connect(): Promise<void>;
+
+  /**
+   * Destroys connection to rpc server.
+   */
+  disconnect(): Promise<void>;
+
+  /**
+   * Invokes callback on new slot.
+   * Depending on implementation it will poll for new slot or getting notified(Websockets)
+   * @param cb
+   */
+  onNewSlot(cb: (slot: Slot) => void);
+
+
+  /**
+   * Invokes callback on new head block.
+   * Depending on implementation it will poll for new head block or getting notified(Websockets)
+   * @param cb
+   */
+  onNewBeaconState(cb: (state: BeaconState) => void);
+
+  /**
+   * Invokes callback on new attestation data.
+   * Depending on implementation it will poll for attestation data or getting notified(Websockets)
+   * @param cb
+   */
+  onNewAttestation(cb: (attestation: AttestationData) => void);
+
+
+
+}