diff --git a/.github/workflows/integration-tests.yml b/.github/workflows/integration-tests.yml
index 1525f8f..4942d0a 100644
--- a/.github/workflows/integration-tests.yml
+++ b/.github/workflows/integration-tests.yml
@@ -16,7 +16,7 @@ env:
   AGENT_SERVER_PORT: 8010
   HOST_WORKSPACE_DIR: /tmp/agent-workspace
   AGENT_WORKSPACE_DIR: /workspace
-  AGENT_SERVER_IMAGE: ghcr.io/openhands/agent-server:7c37803-python # software-agent-sdk v1.18.1
+  AGENT_SERVER_IMAGE: ghcr.io/openhands/agent-server:b1235d0-python # software-agent-sdk v1.23.0
 
 jobs:
   integration-test:
diff --git a/AGENTS.md b/AGENTS.md
index 011018a..407a38d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -304,10 +304,10 @@ Integration tests are in `src/__tests__/integration/` and require a running agen
 export LLM_API_KEY="your-api-key"
 export LLM_MODEL="anthropic/claude-sonnet-4-5-20250929"
 
-# Start agent-server in Docker (software-agent-sdk v1.18.1)
+# Start agent-server in Docker (software-agent-sdk v1.23.0)
 docker run -d --name agent-server -p 8010:8000 \
   -v /tmp/agent-workspace:/workspace \
-  ghcr.io/openhands/agent-server:7c37803-python
+  ghcr.io/openhands/agent-server:b1235d0-python
 
 # Run integration tests
 npm run test:integration
@@ -336,7 +336,7 @@ Required GitHub secrets:
 
 ### CI Image Version
 
-- The integration workflow pins `ghcr.io/openhands/agent-server:7c37803-python`, which corresponds to the `software-agent-sdk` release `v1.18.1`.
+- The integration workflow pins `ghcr.io/openhands/agent-server:b1235d0-python`, which corresponds to the `software-agent-sdk` release `v1.23.0`.
 - Keep the TypeScript client tests strict against that released server image rather than adding compatibility fallbacks for older prerelease builds.
 
 ## Agent Behavior Guidelines
diff --git a/src/__tests__/api-clients.test.ts b/src/__tests__/api-clients.test.ts
index 7b040ef..edf5efb 100644
--- a/src/__tests__/api-clients.test.ts
+++ b/src/__tests__/api-clients.test.ts
@@ -760,6 +760,7 @@ describe('Auxiliary API clients', () => {
     const client = new ConversationClient({ host: 'http://example.com' });
     await client.sendEvent('c1', { role: 'user', content: [] }, { run: true });
     await client.pauseConversation('c1');
+    await client.interruptConversation('c1');
     await client.runConversation('c1');
     await client.askAgent('c1', 'status?');
     await client.respondToConfirmation('c1', { accept: true });
@@ -775,17 +776,22 @@ describe('Auxiliary API clients', () => {
       })
     );
     expect(global.fetch).toHaveBeenNthCalledWith(
-      4,
+      3,
+      'http://example.com/api/conversations/c1/interrupt',
+      expect.objectContaining({ method: 'POST', body: JSON.stringify({}) })
+    );
+    expect(global.fetch).toHaveBeenNthCalledWith(
+      5,
       'http://example.com/api/conversations/c1/ask_agent',
       expect.objectContaining({ method: 'POST', body: JSON.stringify({ question: 'status?' }) })
     );
     expect(global.fetch).toHaveBeenNthCalledWith(
-      5,
+      6,
       'http://example.com/api/conversations/c1/events/respond_to_confirmation',
       expect.objectContaining({ method: 'POST', body: JSON.stringify({ accept: true }) })
     );
     expect(global.fetch).toHaveBeenNthCalledWith(
-      7,
+      8,
       'http://example.com/api/conversations/c1',
       expect.objectContaining({ method: 'PATCH', body: JSON.stringify({ title: 'New title' }) })
     );
diff --git a/src/__tests__/integration/deterministic-api.integration.test.ts b/src/__tests__/integration/deterministic-api.integration.test.ts
index 315dcf4..c15a5cf 100644
--- a/src/__tests__/integration/deterministic-api.integration.test.ts
+++ b/src/__tests__/integration/deterministic-api.integration.test.ts
@@ -58,7 +58,7 @@ describe('Deterministic API Integration Tests', () => {
 
       expect(root).toBeDefined();
       expect(alive.status).toBe('ok');
-      expect(health).toBe('OK');
+      expect(health.status).toBe('ok');
       expect(['ready', 'initializing']).toContain(ready.status);
       expect(info.version).toBeDefined();
       expect(Array.isArray(providers)).toBe(true);
@@ -114,14 +114,13 @@ describe('Deterministic API Integration Tests', () => {
         const finalResponse = await conversation.getAgentFinalResponse();
         expect(typeof finalResponse).toBe('string');
 
-        const trajectoryFile = `/workspace/conversations/${conversation.id.replace(/-/g, '')}.zip`;
-        await workspace.executeCommand(
-          `mkdir -p /workspace/conversations && printf 'trajectory-data' > ${trajectoryFile}`
-        );
         const trajectory = await conversation.downloadTrajectory();
         expect(trajectory).toBeInstanceOf(Blob);
-        expect(await trajectory.text()).toContain('trajectory-data');
-        await workspace.executeCommand(`rm -f ${trajectoryFile}`);
+        expect(trajectory.size).toBeGreaterThan(0);
+        const trajectoryBytes = new Uint8Array(await trajectory.arrayBuffer());
+        // Verify it's a valid ZIP file (PK\x03\x04 magic bytes)
+        expect(trajectoryBytes[0]).toBe(0x50); // P
+        expect(trajectoryBytes[1]).toBe(0x4b); // K
 
         const forkedConversation = await conversation.fork({
           title: 'Forked from deterministic test',
diff --git a/src/client/conversation-client.ts b/src/client/conversation-client.ts
index 98ebfcb..e3ea0a7 100644
--- a/src/client/conversation-client.ts
+++ b/src/client/conversation-client.ts
@@ -90,6 +90,14 @@ export class ConversationClient {
     return response.data;
   }
 
+  async interruptConversation(conversationId: string): Promise<Success> {
+    const response = await this.client.post<Success>(
+      `/api/conversations/${conversationId}/interrupt`,
+      {}
+    );
+    return response.data;
+  }
+
   async runConversation(conversationId: string): Promise<Success> {
     const response = await this.client.post<Success>(
       `/api/conversations/${conversationId}/run`,
diff --git a/src/client/server-client.ts b/src/client/server-client.ts
index f2f202c..1fc8fdb 100644
--- a/src/client/server-client.ts
+++ b/src/client/server-client.ts
@@ -1,5 +1,5 @@
 import { HttpClient } from './http-client';
-import { AliveStatus, ReadyStatus } from '../models/api';
+import { AliveStatus, HealthStatus, ReadyStatus } from '../models/api';
 import { ServerInfo } from '../types/base';
 
 export interface ServerClientOptions {
@@ -33,8 +33,8 @@ export class ServerClient {
     return response.data;
   }
 
-  async getHealth(): Promise<string> {
-    const response = await this.client.get<string>('/health');
+  async getHealth(): Promise<HealthStatus> {
+    const response = await this.client.get<HealthStatus>('/health');
     return response.data;
   }
 
diff --git a/src/index.ts b/src/index.ts
index cbb896c..a7a91f4 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -236,6 +236,7 @@ export type { HttpClientOptions, RequestOptions, HttpResponse } from './client/h
 
 export type {
   AliveStatus,
+  HealthStatus,
   ReadyStatus,
   ProvidersResponse,
   ModelsResponse,
diff --git a/src/models/api.ts b/src/models/api.ts
index 80331ab..7777fbf 100644
--- a/src/models/api.ts
+++ b/src/models/api.ts
@@ -8,6 +8,10 @@ export interface AliveStatus {
   status: string;
 }
 
+export interface HealthStatus {
+  status: string;
+}
+
 export interface ReadyStatus {
   status: string;
   message?: string;