diff --git a/api/relayer-config.ts b/api/relayer-config.ts
index 9759a343b..52fc8e837 100644
--- a/api/relayer-config.ts
+++ b/api/relayer-config.ts
@@ -4,8 +4,13 @@ import {
   getWhiteListedRelayers,
   isTimestampValid,
   MAX_MESSAGE_AGE_SECONDS,
+  updateLimits,
 } from "./_exclusivity/utils";
-import { RelayerConfigUpdate, TypedRelayerConfigUpdateRequest } from "./_types";
+import {
+  RelayerConfigUpdate,
+  RelayerFillLimitArraySchema,
+  TypedRelayerConfigUpdateRequest,
+} from "./_types";
 
 const handler = async (
   request: TypedRelayerConfigUpdateRequest,
@@ -14,21 +19,30 @@ const handler = async (
   if (request.method !== "POST") {
     return response.status(405).end(`Method ${request.method} Not Allowed`);
   }
+
   const body = request.body as RelayerConfigUpdate;
   const { authorization } = request.headers;
-  const { timestamp } = body;
+  const { relayerFillLimits, timestamp } = body;
   if (!isTimestampValid(timestamp, MAX_MESSAGE_AGE_SECONDS)) {
     return response.status(400).json({ message: "Message too old" });
   }
 
-  if (
-    !authorization ||
-    !getWhiteListedRelayers().includes(
-      getRelayerFromSignature(authorization, JSON.stringify(body))
-    )
-  ) {
+  if (!authorization) {
+    return response.status(401).json({ message: "Unauthorized" });
+  }
+  const relayer = getRelayerFromSignature(authorization, JSON.stringify(body));
+
+  if (!getWhiteListedRelayers().includes(relayer)) {
     return response.status(401).json({ message: "Unauthorized" });
   }
+
+  if (!RelayerFillLimitArraySchema.is(relayerFillLimits)) {
+    return response
+      .status(400)
+      .json({ message: "Invalid configuration payload" });
+  }
+
+  await updateLimits(relayer, relayerFillLimits);
   return response.status(200).json({ message: "POST request received" });
 };
 
diff --git a/test/api/relayer-config.test.ts b/test/api/relayer-config.test.ts
index a8d6200da..b71b8d5be 100644
--- a/test/api/relayer-config.test.ts
+++ b/test/api/relayer-config.test.ts
@@ -28,6 +28,19 @@ describe("Relayer Config API", () => {
   test("POST request with valid timestamp", async () => {
     const message = {
       timestamp: Date.now() / 1000,
+      relayerFillLimits: [
+        {
+          originChainId: "1",
+          inputToken: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
+          destinationChainId: "42161",
+          outputToken: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2",
+          minOutputAmount: "1",
+          maxOutputAmount: "2",
+          balanceMultiplier: "1",
+          minProfitThreshold: "0.0001",
+          minExclusivityPeriod: "1",
+        },
+      ],
     };
     const messageString = JSON.stringify(message);
     const signature = await whitelistedRelayer.signMessage(messageString);