From 4b6a41f8df811184887b16f2d9ff44b827d6e27f Mon Sep 17 00:00:00 2001
From: Joaquim Verges <joaquim.verges@gmail.com>
Date: Wed, 10 Sep 2025 10:54:23 +1200
Subject: [PATCH] Add signAuthorization support to 1193 provider

---
 .changeset/eighty-taxis-own.md                  | 5 +++++
 packages/thirdweb/src/wallets/injected/index.ts | 9 +++++++++
 2 files changed, 14 insertions(+)
 create mode 100644 .changeset/eighty-taxis-own.md

diff --git a/.changeset/eighty-taxis-own.md b/.changeset/eighty-taxis-own.md
new file mode 100644
index 00000000000..afa820e2c45
--- /dev/null
+++ b/.changeset/eighty-taxis-own.md
@@ -0,0 +1,5 @@
+---
+"thirdweb": patch
+---
+
+Add signAuthorization support to 1193 provider
diff --git a/packages/thirdweb/src/wallets/injected/index.ts b/packages/thirdweb/src/wallets/injected/index.ts
index 7ac61953255..03620be9206 100644
--- a/packages/thirdweb/src/wallets/injected/index.ts
+++ b/packages/thirdweb/src/wallets/injected/index.ts
@@ -1,3 +1,4 @@
+import * as ox__Authorization from "ox/Authorization";
 import type { EIP1193Provider } from "viem";
 import {
   getTypesForEIP712Domain,
@@ -14,6 +15,7 @@ import {
 import type { Chain } from "../../chains/types.js";
 import { getCachedChain, getChainMetadata } from "../../chains/utils.js";
 import type { ThirdwebClient } from "../../client/client.js";
+import type { AuthorizationRequest } from "../../transaction/actions/eip7702/authorization.js";
 import { getAddress } from "../../utils/address.js";
 import {
   type Hex,
@@ -265,6 +267,13 @@ function createAccount({
         params: [messageToSign, getAddress(account.address)],
       });
     },
+    async signAuthorization(authorization: AuthorizationRequest) {
+      const payload = ox__Authorization.getSignPayload(authorization);
+      return await provider.request({
+        method: "eth_sign",
+        params: [getAddress(account.address), payload],
+      });
+    },
     async signTypedData(typedData) {
       if (!provider || !account.address) {
         throw new Error("Provider not setup");