diff --git a/.changeset/legal-pots-boil.md b/.changeset/legal-pots-boil.md
new file mode 100644
index 00000000000..6762f9f311f
--- /dev/null
+++ b/.changeset/legal-pots-boil.md
@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+expose setServiceKey
diff --git a/packages/thirdweb/src/exports/utils.ts b/packages/thirdweb/src/exports/utils.ts
index 4a72043ff30..2bcdd6527c4 100644
--- a/packages/thirdweb/src/exports/utils.ts
+++ b/packages/thirdweb/src/exports/utils.ts
@@ -151,7 +151,7 @@ export {
 } from "viem";
 
 // Useful helpers
-export { setThirdwebDomains } from "../utils/domains.js";
+export { setThirdwebDomains, setServiceKey } from "../utils/domains.js";
 export { resolvePromisedValue } from "../utils/promise/resolve-promised-value.js";
 export {
   setTransactionDecorator,
diff --git a/packages/thirdweb/src/utils/domains.ts b/packages/thirdweb/src/utils/domains.ts
index 374b7ebb783..2a94c2ee7f9 100644
--- a/packages/thirdweb/src/utils/domains.ts
+++ b/packages/thirdweb/src/utils/domains.ts
@@ -90,3 +90,13 @@ export const getThirdwebBaseUrl = (service: keyof DomainOverrides) => {
   }
   return `https://${origin}`;
 };
+
+let serviceKey: string | null = null;
+
+export const setServiceKey = (key: string | null) => {
+  serviceKey = key;
+};
+
+export const getServiceKey = () => {
+  return serviceKey;
+};
diff --git a/packages/thirdweb/src/utils/fetch.ts b/packages/thirdweb/src/utils/fetch.ts
index a52b104d9ad..f3f7474e939 100644
--- a/packages/thirdweb/src/utils/fetch.ts
+++ b/packages/thirdweb/src/utils/fetch.ts
@@ -7,6 +7,7 @@ import {
   detectOS,
   detectPlatform,
 } from "./detect-platform.js";
+import { getServiceKey } from "./domains.js";
 import { isJWT } from "./jwt/is-jwt.js";
 import { IS_DEV } from "./process.js";
 
@@ -75,6 +76,11 @@ export function getClientFetch(client: ThirdwebClient, ecosystem?: Ecosystem) {
       for (const [key, value] of getPlatformHeaders()) {
         (headers as Headers).set(key, value);
       }
+
+      const serviceKey = getServiceKey();
+      if (serviceKey) {
+        headers.set("x-service-api-key", serviceKey);
+      }
     }
 
     let controller: AbortController | undefined;