diff --git a/sdk/typescript/README.md b/sdk/typescript/README.md
index b74fd44b..9d2ea977 100644
--- a/sdk/typescript/README.md
+++ b/sdk/typescript/README.md
@@ -10,7 +10,7 @@ npm install @openai/codex-sdk
 
 ## Usage
 
-Call `startThread()` and `run()` to start a thead with Codex.
+Call `startThread()` and `run()` to start a thread with Codex.
 
 ```typescript
 import { Codex } from "@openai/codex-sdk";
@@ -32,17 +32,21 @@ console.log(result);
 
 ### Streaming
 
-The `await run()` method completes when a thread turn is complete and agent is prepared the final response.
+The `run()` method completes when a thread turn is complete and the agent has produced the final response.
 
-You can thread items while they are being produced by calling `await runStreamed()`.
+You can stream events while they are being produced by calling `runStreamed()` and iterating the returned generator.
 
 ```typescript
-const result = thread.runStreamed("Diagnose the test failure and propose a fix");
+const { events } = await thread.runStreamed("Diagnose the test failure and propose a fix");
+
+for await (const event of events) {
+  console.log(event);
+}
 ```
 
 ### Resuming a thread
 
-If you don't have the original `Thread` instance to continue the thread, you can resume a thread by calling `resumeThread()` and providing the thread.
+If you don't have the original `Thread` instance to continue the thread, you can resume by calling `resumeThread()` and providing the thread identifier.
 
 ```typescript
 const threadId = "...";
@@ -54,7 +58,7 @@ console.log(result);
 
 ### Working directory
 
-By default, Codex will run in the current working directory. You can change the working directory by passing the `workingDirectory` option to the when creating a thread.
+By default, Codex will run in the current working directory. You can change the working directory by passing the `workingDirectory` option when creating a thread.
 
 ```typescript
 const thread = codex.startThread({
@@ -62,7 +66,7 @@ const thread = codex.startThread({
 });
 ```
 
-To avoid unrecoverable errors, Codex requires the working directory to be a git repository. You can skip the git repository check by passing the `skipGitRepoCheck` option to the when creating a thread.
+To avoid unrecoverable errors, Codex requires the working directory to be a Git repository. You can skip the Git repository check by passing the `skipGitRepoCheck` option when creating a thread.
 
 ```typescript
 const thread = codex.startThread({
diff --git a/sdk/typescript/src/codexOptions.ts b/sdk/typescript/src/codexOptions.ts
index 149e6171..2d22bcf2 100644
--- a/sdk/typescript/src/codexOptions.ts
+++ b/sdk/typescript/src/codexOptions.ts
@@ -2,5 +2,4 @@ export type CodexOptions = {
   codexPathOverride?: string;
   baseUrl?: string;
   apiKey?: string;
-  workingDirectory?: string;
 };
diff --git a/sdk/typescript/src/index.ts b/sdk/typescript/src/index.ts
index 3a4f3491..738b1dc6 100644
--- a/sdk/typescript/src/index.ts
+++ b/sdk/typescript/src/index.ts
@@ -30,4 +30,4 @@ export { Codex } from "./codex";
 
 export type { CodexOptions } from "./codexOptions";
 
-export type { ThreadOptions as TheadOptions, ApprovalMode, SandboxMode } from "./threadOptions";
+export type { ThreadOptions, ApprovalMode, SandboxMode } from "./threadOptions";
diff --git a/sdk/typescript/src/thread.ts b/sdk/typescript/src/thread.ts
index b31c2c51..d4745d49 100644
--- a/sdk/typescript/src/thread.ts
+++ b/sdk/typescript/src/thread.ts
@@ -1,5 +1,5 @@
 import { CodexOptions } from "./codexOptions";
-import { ThreadEvent, Usage } from "./events";
+import { ThreadEvent, ThreadError, Usage } from "./events";
 import { CodexExec } from "./exec";
 import { ThreadItem } from "./items";
 import { ThreadOptions } from "./threadOptions";
@@ -87,6 +87,7 @@ export class Thread {
     const items: ThreadItem[] = [];
     let finalResponse: string = "";
     let usage: Usage | null = null;
+    let turnFailure: ThreadError | null = null;
     for await (const event of generator) {
       if (event.type === "item.completed") {
         if (event.item.type === "agent_message") {
@@ -95,8 +96,14 @@ export class Thread {
         items.push(event.item);
       } else if (event.type === "turn.completed") {
         usage = event.usage;
+      } else if (event.type === "turn.failed") {
+        turnFailure = event.error;
+        break;
       }
     }
+    if (turnFailure) {
+      throw new Error(turnFailure.message);
+    }
     return { items, finalResponse, usage };
   }
 }
diff --git a/sdk/typescript/tests/responsesProxy.ts b/sdk/typescript/tests/responsesProxy.ts
index 9ea9b31c..cf5e97fb 100644
--- a/sdk/typescript/tests/responsesProxy.ts
+++ b/sdk/typescript/tests/responsesProxy.ts
@@ -173,16 +173,19 @@ export function assistantMessage(text: string, itemId: string = DEFAULT_MESSAGE_
   };
 }
 
+export function responseFailed(errorMessage: string): SseEvent {
+  return {
+    type: "error",
+    error: { code: "rate_limit_exceeded", message: errorMessage },
+  };
+}
+
 export function responseCompleted(
   responseId: string = DEFAULT_RESPONSE_ID,
   usage: ResponseCompletedUsage = DEFAULT_COMPLETED_USAGE,
 ): SseEvent {
-  const inputDetails = usage.input_tokens_details
-    ? { ...usage.input_tokens_details }
-    : null;
-  const outputDetails = usage.output_tokens_details
-    ? { ...usage.output_tokens_details }
-    : null;
+  const inputDetails = usage.input_tokens_details ? { ...usage.input_tokens_details } : null;
+  const outputDetails = usage.output_tokens_details ? { ...usage.output_tokens_details } : null;
   return {
     type: "response.completed",
     response: {
diff --git a/sdk/typescript/tests/run.test.ts b/sdk/typescript/tests/run.test.ts
index 6b577a0b..d404761d 100644
--- a/sdk/typescript/tests/run.test.ts
+++ b/sdk/typescript/tests/run.test.ts
@@ -12,6 +12,7 @@ import {
   responseCompleted,
   responseStarted,
   sse,
+  responseFailed,
   startResponsesTestProxy,
 } from "./responsesProxy";
 
@@ -287,6 +288,23 @@ describe("Codex", () => {
       await close();
     }
   });
+  it("throws ThreadRunError on turn failures", async () => {
+    const { url, close } = await startResponsesTestProxy({
+      statusCode: 200,
+      responseBodies: [
+        sse(responseStarted("response_1")),
+        sse(responseFailed("rate limit exceeded")),
+      ],
+    });
+
+    try {
+      const client = new Codex({ codexPathOverride: codexExecPath, baseUrl: url, apiKey: "test" });
+      const thread = client.startThread();
+      await expect(thread.run("fail")).rejects.toThrow("stream disconnected before completion:");
+    } finally {
+      await close();
+    }
+  }, 10000); // TODO(pakrym): remove timeout
 });
 function expectPair(args: string[] | undefined, pair: [string, string]) {
   if (!args) {