diff --git a/.changeset/shiny-olives-pay.md b/.changeset/shiny-olives-pay.md
new file mode 100644
index 00000000000..1d3769c1a7b
--- /dev/null
+++ b/.changeset/shiny-olives-pay.md
@@ -0,0 +1,5 @@
+---
+"@thirdweb-dev/engine": patch
+---
+
+Update openAPI spec
diff --git a/packages/engine/README.md b/packages/engine/README.md
index 0e55b8cdbe5..859a0cd378c 100644
--- a/packages/engine/README.md
+++ b/packages/engine/README.md
@@ -5,23 +5,38 @@ This package is a thin openAPI wrapper for insight, our in-house indexer.
 ## Configuration
 
 ```ts
-import { configure } from "@thirdweb-dev/insight";
+import { configure } from "@thirdweb-dev/engine";
 
 // call this once at the startup of your application
 configure({
-  clientId: "<YOUR_CLIENT_ID>",
+  secretKey: "<PROJECT_SECRET_KEY>",
 });
 ```
 
 ## Example Usage
 
 ```ts
-import { getV1Events } from "@thirdweb-dev/insight";
+import { writeContract } from "@thirdweb-dev/engine";
 
-const events = await getV1Events({
-  query: {
-    chain: [1, 137],
-    filter_address: "0x1234567890123456789012345678901234567890",
+const result = await writeContract({
+  headers: {
+    "x-vault-access-token": "<VAULT_ACCESS_TOKEN>",
+  },
+  body: {
+    executionOptions: {
+      from: "0x1234567891234567891234567891234567891234",
+      chainId: "1",
+    },
+    params: [
+      {
+        contractAddress: "0x1234567890123456789012345678901234567890",
+        method: "function transfer(address to, uint256 amount)",
+        params: [
+          "0x1234567890123456789012345678901234567890",
+          "1000000000000000000",
+        ],
+      },
+    ],
   },
 });
 ```
diff --git a/packages/engine/openapi-ts.config.ts b/packages/engine/openapi-ts.config.ts
index f21fc337c5c..e1873082942 100644
--- a/packages/engine/openapi-ts.config.ts
+++ b/packages/engine/openapi-ts.config.ts
@@ -1,7 +1,7 @@
 import { defineConfig } from "@hey-api/openapi-ts";
 
 export default defineConfig({
-  input: "http://localhost:3009/openapi", // TODO: update to prod
+  input: "https://engine.thirdweb.com/openapi",
   output: { path: "src/client", lint: "biome", format: "biome" },
   plugins: ["@hey-api/client-fetch"],
 });
diff --git a/packages/engine/src/client/client.gen.ts b/packages/engine/src/client/client.gen.ts
index a0b05b5e1c0..3dca3c31b50 100644
--- a/packages/engine/src/client/client.gen.ts
+++ b/packages/engine/src/client/client.gen.ts
@@ -23,6 +23,6 @@ export type CreateClientConfig<T extends DefaultClientOptions = ClientOptions> =
 
 export const client = createClient(
   createConfig<ClientOptions>({
-    baseUrl: "http://localhost:3009",
+    baseUrl: "https://engine.thirdweb.com",
   }),
 );
diff --git a/packages/engine/src/client/types.gen.ts b/packages/engine/src/client/types.gen.ts
index 0c35fc41fca..61c6801af2a 100644
--- a/packages/engine/src/client/types.gen.ts
+++ b/packages/engine/src/client/types.gen.ts
@@ -144,6 +144,7 @@ export type WriteContractResponses = {
       transactions: Array<{
         id: string;
         batchIndex: number;
+        clientId: string;
         chainId: string;
         from: string | null;
         transactionParams:
@@ -188,6 +189,7 @@ export type WriteContractResponses = {
       transactions: Array<{
         id: string;
         batchIndex: number;
+        clientId: string;
         chainId: string;
         from: string | null;
         transactionParams:
@@ -273,6 +275,7 @@ export type SendTransactionResponses = {
       transactions: Array<{
         id: string;
         batchIndex: number;
+        clientId: string;
         chainId: string;
         from: string | null;
         transactionParams:
@@ -317,6 +320,7 @@ export type SendTransactionResponses = {
       transactions: Array<{
         id: string;
         batchIndex: number;
+        clientId: string;
         chainId: string;
         from: string | null;
         transactionParams:
@@ -876,6 +880,7 @@ export type SearchTransactionsResponses = {
       transactions: Array<{
         id: string;
         batchIndex: number;
+        clientId: string;
         chainId: string;
         from: string | null;
         transactionParams:
@@ -1013,5 +1018,5 @@ export type GetTransactionAnalyticsSummaryResponse =
   GetTransactionAnalyticsSummaryResponses[keyof GetTransactionAnalyticsSummaryResponses];
 
 export type ClientOptions = {
-  baseUrl: "http://localhost:3009" | (string & {});
+  baseUrl: "https://engine.thirdweb.com" | (string & {});
 };