diff --git a/src/server/routes/backend-wallet/cancel-nonces.ts b/src/server/routes/backend-wallet/cancel-nonces.ts
new file mode 100644
index 000000000..cb4f6cf73
--- /dev/null
+++ b/src/server/routes/backend-wallet/cancel-nonces.ts
@@ -0,0 +1,107 @@
+import { Type, type Static } from "@sinclair/typebox";
+import type { FastifyInstance } from "fastify";
+import { StatusCodes } from "http-status-codes";
+import { eth_getTransactionCount, getRpcClient } from "thirdweb";
+import { checksumAddress } from "thirdweb/utils";
+import { getChain } from "../../../utils/chain";
+import { thirdwebClient } from "../../../utils/sdk";
+import { sendCancellationTransaction } from "../../../utils/transaction/cancelTransaction";
+import {
+  requestQuerystringSchema,
+  standardResponseSchema,
+} from "../../schemas/sharedApiSchemas";
+import {
+  walletChainParamSchema,
+  walletHeaderSchema,
+} from "../../schemas/wallet";
+import { getChainIdFromChain } from "../../utils/chain";
+
+const requestSchema = walletChainParamSchema;
+
+const requestBodySchema = Type.Object({
+  toNonce: Type.Number({
+    description:
+      "The nonce to cancel up to, inclusive. Example: If the onchain nonce is 10 and 'toNonce' is 15, this request will cancel nonces: 11, 12, 13, 14, 15",
+    examples: ["42"],
+  }),
+});
+
+const responseBodySchema = Type.Object({
+  result: Type.Object(
+    {
+      cancelledNonces: Type.Array(Type.Number()),
+    },
+    {
+      examples: [
+        {
+          result: {
+            cancelledNonces: [11, 12, 13, 14, 15],
+          },
+        },
+      ],
+    },
+  ),
+});
+
+export async function cancelBackendWalletNoncesRoute(fastify: FastifyInstance) {
+  fastify.route<{
+    Params: Static<typeof requestSchema>;
+    Reply: Static<typeof responseBodySchema>;
+    Body: Static<typeof requestBodySchema>;
+    Querystring: Static<typeof requestQuerystringSchema>;
+  }>({
+    method: "POST",
+    url: "/backend-wallet/:chain/cancel-nonces",
+    schema: {
+      summary: "Cancel nonces",
+      description:
+        "Cancel all nonces up to the provided nonce. This is useful to unblock a backend wallet that has transactions waiting for nonces to be mined.",
+      tags: ["Backend Wallet"],
+      operationId: "cancelNonces",
+      params: requestSchema,
+      body: requestBodySchema,
+      headers: walletHeaderSchema,
+      querystring: requestQuerystringSchema,
+      response: {
+        ...standardResponseSchema,
+        [StatusCodes.OK]: responseBodySchema,
+      },
+    },
+    handler: async (request, reply) => {
+      const { chain } = request.params;
+      const { toNonce } = request.body;
+      const { "x-backend-wallet-address": walletAddress } =
+        request.headers as Static<typeof walletHeaderSchema>;
+
+      const chainId = await getChainIdFromChain(chain);
+      const from = checksumAddress(walletAddress);
+
+      const rpcRequest = getRpcClient({
+        client: thirdwebClient,
+        chain: await getChain(chainId),
+      });
+
+      // Cancel starting from the next unused onchain nonce.
+      const transactionCount = await eth_getTransactionCount(rpcRequest, {
+        address: walletAddress,
+        blockTag: "latest",
+      });
+
+      const cancelledNonces: number[] = [];
+      for (let nonce = transactionCount; nonce <= toNonce; nonce++) {
+        await sendCancellationTransaction({
+          chainId,
+          from,
+          nonce,
+        });
+        cancelledNonces.push(nonce);
+      }
+
+      reply.status(StatusCodes.OK).send({
+        result: {
+          cancelledNonces,
+        },
+      });
+    },
+  });
+}
diff --git a/src/server/routes/index.ts b/src/server/routes/index.ts
index 2f56406d9..1d6694a98 100644
--- a/src/server/routes/index.ts
+++ b/src/server/routes/index.ts
@@ -11,6 +11,7 @@ import { removePublicKey } from "./auth/keypair/remove";
 import { getAllPermissions } from "./auth/permissions/getAll";
 import { grantPermissions } from "./auth/permissions/grant";
 import { revokePermissions } from "./auth/permissions/revoke";
+import { cancelBackendWalletNoncesRoute } from "./backend-wallet/cancel-nonces";
 import { createBackendWallet } from "./backend-wallet/create";
 import { getAll } from "./backend-wallet/getAll";
 import { getBalance } from "./backend-wallet/getBalance";
@@ -129,6 +130,8 @@ export async function withRoutes(fastify: FastifyInstance) {
   await fastify.register(getTransactionsForBackendWallet);
   await fastify.register(getTransactionsForBackendWalletByNonce);
   await fastify.register(resetBackendWalletNoncesRoute);
+  await fastify.register(cancelBackendWalletNoncesRoute);
+  await fastify.register(resetBackendWalletNoncesRoute);
   await fastify.register(getBackendWalletNonce);
   await fastify.register(simulateTransaction);
 
diff --git a/src/server/routes/transaction/getAll.ts b/src/server/routes/transaction/getAll.ts
index d8c023167..5b58f5b3e 100644
--- a/src/server/routes/transaction/getAll.ts
+++ b/src/server/routes/transaction/getAll.ts
@@ -27,7 +27,7 @@ const requestQuerySchema = Type.Object({
   ),
 });
 
-export const responseBodySchema = Type.Object({
+const responseBodySchema = Type.Object({
   result: Type.Object({
     transactions: Type.Array(TransactionSchema),
     totalCount: Type.Integer(),
diff --git a/src/worker/tasks/nonceResyncWorker.ts b/src/worker/tasks/nonceResyncWorker.ts
index 9a0642250..8f5cb0c65 100644
--- a/src/worker/tasks/nonceResyncWorker.ts
+++ b/src/worker/tasks/nonceResyncWorker.ts
@@ -40,7 +40,7 @@ export const initNonceResyncWorker = async () => {
  * This is to unblock a wallet that has been stuck due to one or more skipped nonces.
  */
 const handler: Processor<any, void, string> = async (job: Job<string>) => {
-  const sentNoncesKeys = await redis.keys("nonce-sent*");
+  const sentNoncesKeys = await redis.keys("nonce-sent:*");
   if (sentNoncesKeys.length === 0) {
     job.log("No active wallets.");
     return;