diff --git a/src/backend/CosmosTodoItemAITrigger.cs b/src/backend/CosmosTodoItemAITrigger.cs
new file mode 100644
index 0000000..22c4d44
--- /dev/null
+++ b/src/backend/CosmosTodoItemAITrigger.cs
@@ -0,0 +1,108 @@
+using System.Collections.Generic;
+using Microsoft.Azure.WebJobs;
+using backend.Models;
+using System.Threading.Tasks;
+using Microsoft.Azure.WebJobs.Extensions.DurableTask;
+using Azure.AI.OpenAI;
+using Azure;
+using System;
+using System.Linq;
+
+namespace backend
+{
+    public class CosmosTodoItemAITrigger
+    {
+        private readonly OpenAIClient _openAIClient;
+
+        public CosmosTodoItemAITrigger(OpenAIClient openAIClient)
+        {
+            _openAIClient = openAIClient;
+        }
+
+        [FunctionName("CosmosTodoItemAITrigger")]
+        public async Task Run(
+            [CosmosDBTrigger(
+                databaseName: "%CosmosDatabaseName%",
+                containerName: "TodoItem",
+                Connection = "CosmosConnectionOptions",
+                LeaseContainerName  = "Leases",
+                StartFromBeginning = true,
+                LeaseContainerPrefix = "ai",
+                CreateLeaseContainerIfNotExists = false)] IReadOnlyList<TodoItem> input,
+            [CosmosDB(
+                databaseName: "%CosmosDatabaseName%",
+                containerName: "TodoItem",
+                Connection = "CosmosConnectionOptions")]
+                IAsyncCollector<TodoItem> output,
+            [DurableClient] IDurableEntityClient durableEntityClient)
+        {
+            var exceptions = new List<Exception>();
+
+            if (input != null && input.Count > 0)
+            {
+                foreach (var item in input)
+                {
+                    try
+                    {
+                        var piratized = await Piratize(output, item);
+
+                        if (piratized)
+                        {
+                            await UpdateDbDescription(output, item);
+                        }
+                    }
+                    catch (Exception e)
+                    {
+                        // We need to keep processing the rest of the batch - capture this exception and continue.
+                        // Also, consider capturing details of the message that failed processing so it can be processed again later.
+                        exceptions.Add(e);
+                    }
+                }
+            }
+
+            // Once processing of the batch is complete, if any messages in the batch failed processing throw an exception so that there is a record of the failure.
+
+            if (exceptions.Count > 1)
+                throw new AggregateException(exceptions);
+
+            if (exceptions.Count == 1)
+                throw exceptions.Single();
+        }
+
+        private async Task<bool> Piratize(IAsyncCollector<TodoItem> output, TodoItem item)
+        {
+            if (!string.IsNullOrWhiteSpace(item.Description) && item.Description.StartsWith("[ASSISTANT]"))
+            {
+                return false;
+            }
+
+            var input = string.IsNullOrWhiteSpace(item.Description) ? item.Name : item.Description;
+
+            var chatCompletionsOptions = new ChatCompletionsOptions()
+            {
+                DeploymentName = "gpt-35-turbo-16k",
+                Messages =
+                {
+                    new ChatRequestSystemMessage("You are a helpful assistant. You will talk like a pirate. Rephrase, fix grammer, and create a todo task."),
+
+                    new ChatRequestUserMessage(input),
+                }
+            };
+
+            Response<ChatCompletions> response = await _openAIClient.GetChatCompletionsAsync(chatCompletionsOptions);
+            ChatResponseMessage responseMessage = response.Value.Choices[0].Message;
+
+            item.Description = $"[ASSISTANT]: {responseMessage.Content}";
+
+            return true;
+        }
+
+        private async Task<bool> UpdateDbDescription(IAsyncCollector<TodoItem> output, TodoItem item)
+        {
+            item.UpdatedDate = DateTimeOffset.UtcNow.DateTime;
+            await output.AddAsync(item);
+
+            return true;
+        }
+    }
+}
diff --git a/src/backend/Startup.cs b/src/backend/Startup.cs
index b6229ca..6d700e7 100644
--- a/src/backend/Startup.cs
+++ b/src/backend/Startup.cs
@@ -1,6 +1,8 @@
 using System;
 using System.Net.Http;
 using System.Threading.Tasks;
+using Azure;
+using Azure.AI.OpenAI;
 using Azure.Identity;
 using Azure.Security.KeyVault.Secrets;
 using Microsoft.Azure.Cosmos;
@@ -44,6 +46,24 @@ public override void Configure(IFunctionsHostBuilder builder)
 
                     return new CosmosClientBuilder(accountEndpoint, defaultAzureCredentials).Build();
                 })
+                .AddSingleton<OpenAIClient>(serviceProvider =>
+                {
+                    var azureOpenAIEndpoint = Environment.GetEnvironmentVariable("AzureOpenAIEndpoint");
+                    Uri azureOpenAIResourceUri = new(azureOpenAIEndpoint);
+
+                    var keyVaultUri = new Uri(Environment.GetEnvironmentVariable("KeyVaultEndpoint"));
+                    var httpClient = serviceProvider.GetService<HttpClient>();
+                    var defaultAzureCredentials = serviceProvider.GetService<DefaultAzureCredential>();
+
+                    // Retrieve apiKey from KeyVault
+                    var secretClient = new SecretClient(keyVaultUri, defaultAzureCredentials);
+                    var azureResponseKeyVaultSecret = new Lazy<Task<Azure.Response<KeyVaultSecret>>>(async () => await secretClient.GetSecretAsync("AZURE-OPEN-AI-KEY"));
+                    var openAIApiKey = azureResponseKeyVaultSecret.Value.Result.Value.Value;
+
+                    AzureKeyCredential azureOpenAIApiKey = new(openAIApiKey);
+
+                    return new OpenAIClient(azureOpenAIResourceUri, azureOpenAIApiKey);
+                })
                 .AddHealthChecks();
         }
     }
diff --git a/src/backend/Todo.Backend.csproj b/src/backend/Todo.Backend.csproj
index 869bde1..9fc19d6 100644
--- a/src/backend/Todo.Backend.csproj
+++ b/src/backend/Todo.Backend.csproj
@@ -4,6 +4,7 @@
     <AzureFunctionsVersion>v4</AzureFunctionsVersion>
   </PropertyGroup>
   <ItemGroup>
+    <PackageReference Include="Azure.AI.OpenAI" Version="1.0.0-beta.12" />
     <PackageReference Include="Azure.Identity" Version="1.10.4" />
     <PackageReference Include="Azure.Security.KeyVault.Secrets" Version="4.5.0" />
     <PackageReference Include="Microsoft.Azure.Cosmos" Version="3.35.3" />
diff --git a/src/backend/local.settings.json b/src/backend/local.settings.json
index 5b374a7..640e00a 100644
--- a/src/backend/local.settings.json
+++ b/src/backend/local.settings.json
@@ -8,6 +8,7 @@
     "EventHubRequestsName": "<eventhub-name>",
     "EventHubRequestsConnectionOptions__fullyQualifiedNamespace": "<eventhub-namespace-endpoint>",
     "EventHubRequestsConsumerGroup": "<consumer-group>",
-    "KeyVaultEndpoint": "<keyvault-endpoint>"
+    "KeyVaultEndpoint": "<keyvault-endpoint>",
+    "AzureOpenAIEndpoint": "<openai-endpoint>"
   }
 }
\ No newline at end of file