diff --git a/README.md b/README.md
index c07a9f2e..4e0e0c24 100644
--- a/README.md
+++ b/README.md
@@ -171,6 +171,14 @@ Required
 
 The OpenAI API key. You can retrieve it from [OpenAI API Keys page](https://platform.openai.com/account/api-keys).
 
+For local OpenAI-compatible API server an empty key can be specified as `no_api_key`. Different OpenAI-compatible API servers might enforce the key structure differently. Please consult your OpenAI-compatible API provider documentation for more details.
+
+#### OPENAI_URL
+
+Optional
+
+The OpenAI server URL. Defaults to `https://api.openai.com`. Both `https` and `http` protocols supported.
+
 #### locale
 
 Default: `en`
diff --git a/src/commands/aicommits.ts b/src/commands/aicommits.ts
index e76739cb..80b83d7d 100644
--- a/src/commands/aicommits.ts
+++ b/src/commands/aicommits.ts
@@ -65,6 +65,7 @@ export default async (
 		let messages: string[];
 		try {
 			messages = await generateCommitMessage(
+				config.OPENAI_URL,
 				config.OPENAI_KEY,
 				config.model,
 				config.locale,
diff --git a/src/utils/config.ts b/src/utils/config.ts
index 0e07a59f..fdee94bf 100644
--- a/src/utils/config.ts
+++ b/src/utils/config.ts
@@ -27,7 +27,6 @@ const configParsers = {
 				'Please set your OpenAI API key via `aicommits config set OPENAI_KEY=<your token>`'
 			);
 		}
-		parseAssert('OPENAI_KEY', key.startsWith('sk-'), 'Must start with "sk-"');
 		// Key can range from 43~51 characters. There's no spec to assert this.
 
 		return key;
@@ -115,6 +114,15 @@ const configParsers = {
 
 		return parsed;
 	},
+	OPENAI_URL(url?: string) {
+		if (!url || url.length === 0) {
+			return undefined;
+		}
+
+		parseAssert('OPENAI_URL', /^https?:\/\//.test(url), 'Must be a valid URL');
+
+		return url;
+	},
 } as const;
 
 type ConfigKeys = keyof typeof configParsers;
diff --git a/src/utils/openai.ts b/src/utils/openai.ts
index d8c767ed..ac39e4c0 100644
--- a/src/utils/openai.ts
+++ b/src/utils/openai.ts
@@ -1,4 +1,5 @@
 import https from 'https';
+import http from 'http';
 import type { ClientRequest, IncomingMessage } from 'http';
 import type {
 	CreateChatCompletionRequest,
@@ -14,7 +15,7 @@ import type { CommitType } from './config.js';
 import { generatePrompt } from './prompt.js';
 
 const httpsPost = async (
-	hostname: string,
+	url: URL,
 	path: string,
 	headers: Record<string, string>,
 	json: unknown,
@@ -27,10 +28,14 @@ const httpsPost = async (
 		data: string;
 	}>((resolve, reject) => {
 		const postContent = JSON.stringify(json);
-		const request = https.request(
+		var connector = https;
+		if (url.protocol != 'https') {
+			connector = http;
+		}
+		const request = connector.request(
 			{
-				port: 443,
-				hostname,
+				hostname: url.hostname,
+				port: Number(url.port || '443'),
 				path,
 				method: 'POST',
 				headers: {
@@ -68,13 +73,18 @@ const httpsPost = async (
 	});
 
 const createChatCompletion = async (
+	openai_url: string,
 	apiKey: string,
 	json: CreateChatCompletionRequest,
 	timeout: number,
 	proxy?: string
 ) => {
+	if (!openai_url || openai_url.length === 0) {
+		openai_url = 'https://api.openai.com/';
+	}
+	const url = new URL(openai_url);
 	const { response, data } = await httpsPost(
-		'api.openai.com',
+		url,
 		'/v1/chat/completions',
 		{
 			Authorization: `Bearer ${apiKey}`,
@@ -131,6 +141,7 @@ const deduplicateMessages = (array: string[]) => Array.from(new Set(array));
 // };
 
 export const generateCommitMessage = async (
+	openai_url: string,
 	apiKey: string,
 	model: TiktokenModel,
 	locale: string,
@@ -143,6 +154,7 @@ export const generateCommitMessage = async (
 ) => {
 	try {
 		const completion = await createChatCompletion(
+			openai_url,
 			apiKey,
 			{
 				model,