feat(ai): Support HTTP proxy through environment variables

packages/ai/package.json

@@ -32,6 +32,8 @@
 		"chalk": "^5.6.2",
 		"openai": "6.10.0",
 		"partial-json": "^0.1.7",
+		"proxy-agent": "^6.5.0",
+		"undici": "^7.19.1",
 		"zod-to-json-schema": "^3.24.6"
 	},
 	"keywords": [

packages/ai/src/providers/amazon-bedrock.ts

@@ -1,5 +1,6 @@
 import {
 	BedrockRuntimeClient,
+	type BedrockRuntimeClientConfig,
 	StopReason as BedrockStopReason,
 	type Tool as BedrockTool,
 	CachePointType,
@@ -84,11 +85,42 @@ export const streamBedrock: StreamFunction<"bedrock-converse-stream", BedrockOpt
 
 		const blocks = output.content as Block[];
 
+		const config: BedrockRuntimeClientConfig = {
+			region: options.region,
+			profile: options.profile,
+		};
+
+		// in Node.js/Bun environment only
+		if (typeof process !== "undefined" && (process.versions?.node || process.versions?.bun)) {
+			config.region = config.region || process.env.AWS_REGION || process.env.AWS_DEFAULT_REGION;
+
+			if (
+				process.env.HTTP_PROXY ||
+				process.env.HTTPS_PROXY ||
+				process.env.NO_PROXY ||
+				process.env.http_proxy ||
+				process.env.https_proxy ||
+				process.env.no_proxy
+			) {
+				const nodeHttpHandler = await import("@smithy/node-http-handler");
+				const proxyAgent = await import("proxy-agent");
+
+				const agent = new proxyAgent.ProxyAgent();
+
+				// Bedrock runtime uses NodeHttp2Handler by default since v3.798.0, which is based
+				// on `http2` module and has no support for http agent.
+				// Use NodeHttpHandler to support http agent.
+				config.requestHandler = new nodeHttpHandler.NodeHttpHandler({
+					httpAgent: agent,
+					httpsAgent: agent,
+				});
+			}
+		}
+
+		config.region = config.region || "us-east-1";
+
 		try {
-			const client = new BedrockRuntimeClient({
-				region: options.region || process.env.AWS_REGION || process.env.AWS_DEFAULT_REGION || "us-east-1",
-				profile: options.profile,
-			});
+			const client = new BedrockRuntimeClient(config);
 
 			const commandInput = {
 				modelId: model.id,

packages/ai/src/stream.ts

@@ -14,6 +14,15 @@ import type {
 
 export { getEnvApiKey } from "./env-api-keys.js";
 
+// Set up http proxy according to env variables for `fetch` based SDKs in Node.js.
+// Bun has builtin support for this.
+if (typeof process !== "undefined" && process.versions?.node) {
+	import("undici").then((m) => {
+		const { EnvHttpProxyAgent, setGlobalDispatcher } = m;
+		setGlobalDispatcher(new EnvHttpProxyAgent());
+	});
+}
+
 function resolveApiProvider(api: Api) {
 	const provider = getApiProvider(api);
 	if (!provider) {