diff --git a/src/common.ts b/src/common.ts
index 843e97bc..4495cec1 100644
--- a/src/common.ts
+++ b/src/common.ts
@@ -39,6 +39,7 @@ import {
 export type BlockHeight = number;
 export type SortKey = string;
 export type WalletAddress = string;
+export type TransactionId = string;
 
 // TODO: append this with other configuration options (e.g. local vs. remote evaluation)
 export type ContractSigner = ArweaveSigner | ArconnectSigner;
@@ -210,6 +211,10 @@ export interface ArIOWriteContract {
     target: WalletAddress;
     qty: number;
   }): Promise<WriteInteractionResult>;
+  saveObservations(params: {
+    reportTxId: TransactionId;
+    failedGateways: WalletAddress[];
+  }): Promise<WriteInteractionResult>;
 }
 
 export type WriteInteractionResult =
diff --git a/src/common/ar-io.ts b/src/common/ar-io.ts
index 58df6f85..4cb9df94 100644
--- a/src/common/ar-io.ts
+++ b/src/common/ar-io.ts
@@ -31,7 +31,9 @@ import {
   JoinNetworkParams,
   Observations,
   RegistrationType,
+  TransactionId,
   UpdateGatewaySettingsParams,
+  WalletAddress,
   WeightedObserver,
   WithSigner,
   WriteInteractionResult,
@@ -374,4 +376,15 @@ export class ArIOWritable extends ArIOReadable implements ArIOWriteContract {
     });
     return res;
   }
+
+  async saveObservations(params: {
+    reportTxId: TransactionId;
+    failedGateways: WalletAddress[];
+  }): Promise<WriteInteractionResult> {
+    return this.contract.writeInteraction({
+      functionName: AR_IO_CONTRACT_FUNCTIONS.SAVE_OBSERVATIONS,
+      inputs: params,
+      signer: this.signer,
+    });
+  }
 }