diff --git a/examples/README.md b/examples/README.md
index 86e7bf95..5355878a 100644
--- a/examples/README.md
+++ b/examples/README.md
@@ -89,6 +89,13 @@ AZURE_OPENAI_ENDPOINT=...
 AZURE_OPENAI_API_KEY=...
 ```
 
+Optional proxy setting: For some endpoints, proxy is needed to access services.
+You can set your http proxy environment variable that looks like the following:
+```
+# For Proxy
+HTTP_PROXY=http://host:port
+```
+
 ## Step 4: Run the examples
 
 Examples can be found in the `examples` directory.
diff --git a/package-lock.json b/package-lock.json
index 67a9dbea..d4c43b36 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,10 +14,14 @@
       ],
       "dependencies": {
         "axios": "^1.4.0",
+        "https-proxy-agent": "^7.0.1",
         "typescript": "^5.1.3"
       },
       "devDependencies": {
         "@types/node": "^20.3.3"
+      },
+      "engines": {
+        "node": ">=18"
       }
     },
     "examples/calendar": {
@@ -223,6 +227,38 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/agent-base": {
+      "version": "7.1.0",
+      "resolved": "https://registry.npmjs.org/agent-base/-/agent-base-7.1.0.tgz",
+      "integrity": "sha512-o/zjMZRhJxny7OyEF+Op8X+efiELC7k7yOjMzgfzVqOzXqkBkWI79YoTdOtsuWd5BWhAGAuOY/Xa6xpiaWXiNg==",
+      "dependencies": {
+        "debug": "^4.3.4"
+      },
+      "engines": {
+        "node": ">= 14"
+      }
+    },
+    "node_modules/agent-base/node_modules/debug": {
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
+      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/agent-base/node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
     "node_modules/ansi-regex": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
@@ -821,6 +857,39 @@
         "node": ">= 0.8"
       }
     },
+    "node_modules/https-proxy-agent": {
+      "version": "7.0.1",
+      "resolved": "https://registry.npmjs.org/https-proxy-agent/-/https-proxy-agent-7.0.1.tgz",
+      "integrity": "sha512-Eun8zV0kcYS1g19r78osiQLEFIRspRUDd9tIfBCTBPBeMieF/EsJNL8VI3xOIdYRDEkjQnqOYPsZ2DsWsVsFwQ==",
+      "dependencies": {
+        "agent-base": "^7.0.2",
+        "debug": "4"
+      },
+      "engines": {
+        "node": ">= 14"
+      }
+    },
+    "node_modules/https-proxy-agent/node_modules/debug": {
+      "version": "4.3.4",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.4.tgz",
+      "integrity": "sha512-PRWFHuSU3eDtQJPvnNY7Jcket1j0t5OuOsFzPPzsekD52Zl8qUfFIPEiswXqIvHWGVHOgX+7G/vCNNhehwxfkQ==",
+      "dependencies": {
+        "ms": "2.1.2"
+      },
+      "engines": {
+        "node": ">=6.0"
+      },
+      "peerDependenciesMeta": {
+        "supports-color": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/https-proxy-agent/node_modules/ms": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
+      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w=="
+    },
     "node_modules/iconv-lite": {
       "version": "0.4.24",
       "resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
diff --git a/package.json b/package.json
index 86e93712..80aa643c 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,7 @@
   ],
   "dependencies": {
     "axios": "^1.4.0",
+    "https-proxy-agent": "^7.0.1",
     "typescript": "^5.1.3"
   },
   "devDependencies": {
diff --git a/src/model.ts b/src/model.ts
index dc0dafcb..80486211 100644
--- a/src/model.ts
+++ b/src/model.ts
@@ -1,6 +1,8 @@
 import axios from "axios";
 import { Result, success, error } from "./result";
 
+import { HttpsProxyAgent } from 'https-proxy-agent';
+
 /**
  * Represents a AI language model that can complete prompts. TypeChat uses an implementation of this
  * interface to communicate with an AI service that can translate natural language requests to JSON
@@ -39,17 +41,19 @@ export interface TypeChatLanguageModel {
  * @returns An instance of `TypeChatLanguageModel`.
  */
 export function createLanguageModel(env: Record<string, string | undefined>): TypeChatLanguageModel {
+    const httpProxy = env.HTTP_PROXY ?? "";
+
     if (env.OPENAI_API_KEY) {
         const apiKey = env.OPENAI_API_KEY ?? missingEnvironmentVariable("OPENAI_API_KEY");
         const model = env.OPENAI_MODEL ?? missingEnvironmentVariable("OPENAI_MODEL");
         const endPoint = env.OPENAI_ENDPOINT ?? "https://api.openai.com/v1/chat/completions";
         const org = env.OPENAI_ORGANIZATION ?? "";
-        return createOpenAILanguageModel(apiKey, model, endPoint, org);
+        return createOpenAILanguageModel(apiKey, model, endPoint, org, httpProxy);
     }
     if (env.AZURE_OPENAI_API_KEY) {
         const apiKey = env.AZURE_OPENAI_API_KEY ?? missingEnvironmentVariable("AZURE_OPENAI_API_KEY");
         const endPoint = env.AZURE_OPENAI_ENDPOINT ?? missingEnvironmentVariable("AZURE_OPENAI_ENDPOINT");
-        return createAzureOpenAILanguageModel(apiKey, endPoint);
+        return createAzureOpenAILanguageModel(apiKey, endPoint, httpProxy);
     }
     missingEnvironmentVariable("OPENAI_API_KEY or AZURE_OPENAI_API_KEY");
 }
@@ -59,15 +63,19 @@ export function createLanguageModel(env: Record<string, string | undefined>): Ty
  * @param apiKey The OpenAI API key.
  * @param model The model name.
  * @param endPoint The URL of the OpenAI REST API endpoint. Defaults to "https://api.openai.com/v1/chat/completions".
- * @param org The OpenAI organization id.
+ * @param org: The OpenAI organization id.
+ * @param httpProxy: The HTTP proxy setting.
  * @returns An instance of `TypeChatLanguageModel`.
  */
-export function createOpenAILanguageModel(apiKey: string, model: string, endPoint = "https://api.openai.com/v1/chat/completions", org = ""): TypeChatLanguageModel {
-    return createAxiosLanguageModel(endPoint, {
-        headers: {
+export function createOpenAILanguageModel(apiKey: string, model: string, endPoint = "https://api.openai.com/v1/chat/completions", org = "", httpProxy = ""): TypeChatLanguageModel {
+    const agent = new HttpsProxyAgent(httpProxy);
+    return createAxiosLanguageModel(endPoint, { 
+        headers: { 
             Authorization: `Bearer ${apiKey}`,
             "OpenAI-Organization": org
-         }
+        },
+        httpAgent: agent,
+        httpsAgent: agent
     }, { model });
 }
 
@@ -77,10 +85,16 @@ export function createOpenAILanguageModel(apiKey: string, model: string, endPoin
  *   "https://{your-resource-name}.openai.azure.com/openai/deployments/{your-deployment-name}/chat/completions?api-version={API-version}".
  *   Example deployment names are "gpt-35-turbo" and "gpt-4". An example API versions is "2023-05-15".
  * @param apiKey The Azure OpenAI API key.
+ * @param httpProxy: The HTTP proxy setting.
  * @returns An instance of `TypeChatLanguageModel`.
  */
-export function createAzureOpenAILanguageModel(apiKey: string, endPoint: string,): TypeChatLanguageModel {
-    return createAxiosLanguageModel(endPoint, { headers: { "api-key": apiKey } }, {});
+export function createAzureOpenAILanguageModel(apiKey: string, endPoint: string, httpProxy = ""): TypeChatLanguageModel {
+    const agent = new HttpsProxyAgent(httpProxy);
+    return createAxiosLanguageModel(endPoint, { 
+        headers: { "api-key": apiKey },
+        httpAgent: agent,
+        httpsAgent: agent
+    }, {});
 }
 
 /**