diff --git a/packages/integration-sdk-entity-validator/src/__tests__/validator.test.ts b/packages/integration-sdk-entity-validator/src/__tests__/validator.test.ts
index 8d049031e..bf7fbaebb 100644
--- a/packages/integration-sdk-entity-validator/src/__tests__/validator.test.ts
+++ b/packages/integration-sdk-entity-validator/src/__tests__/validator.test.ts
@@ -2,7 +2,7 @@ import { AnySchema } from 'ajv';
 import { EntityValidator } from '../validator';
 
 const RESOLVED_SCHEMAS_URL =
-  'https://raw.githubusercontent.com/JupiterOne/data-model/main/external/resolvedSchemas.json';
+  'https://api.us.jupiterone.io/data-model/schemas/classes';
 
 const ENTITY_SCHEMA = {
   $schema: 'http://json-schema.org/draft-07/schema#',
diff --git a/packages/integration-sdk-runtime/src/api/__tests__/index.test.ts b/packages/integration-sdk-runtime/src/api/__tests__/index.test.ts
index 91f6135c9..9413d430f 100644
--- a/packages/integration-sdk-runtime/src/api/__tests__/index.test.ts
+++ b/packages/integration-sdk-runtime/src/api/__tests__/index.test.ts
@@ -171,3 +171,171 @@ describe('real Alpha request with fake API key', () => {
     }
   });
 });
+
+describe('createApiClient', () => {
+  const originalEnv = process.env;
+
+  beforeEach(() => {
+    jest.resetModules();
+    process.env = { ...originalEnv };
+  });
+
+  afterAll(() => {
+    process.env = originalEnv;
+  });
+
+  describe('proxy configuration', () => {
+    it('should not configure proxy when no proxy URL is provided', () => {
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      // The client should be created without proxy configuration
+      expect(client).toBeDefined();
+    });
+
+    it('should configure proxy when proxyUrl parameter is provided', () => {
+      const proxyUrl = 'https://foo:bar@proxy.example.com:8888';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+        proxyUrl,
+      });
+
+      expect(client).toBeDefined();
+      // Note: We can't easily test the internal proxy config without exposing it
+      // This test verifies the client is created successfully with proxy config
+    });
+
+    it('should configure proxy from HTTPS_PROXY environment variable', () => {
+      process.env.HTTPS_PROXY = 'https://foo:bar@proxy.example.com:8888';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+    });
+
+    it('should configure proxy from https_proxy environment variable', () => {
+      process.env.https_proxy = 'http://user:pass@proxy.local:3128';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+    });
+
+    it('should prefer HTTPS_PROXY over https_proxy', () => {
+      process.env.HTTPS_PROXY = 'https://primary:proxy@proxy1.com:8888';
+      process.env.https_proxy = 'http://secondary:proxy@proxy2.com:3128';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+    });
+
+    it('should prefer proxyUrl parameter over environment variables', () => {
+      process.env.HTTPS_PROXY = 'https://env:proxy@env-proxy.com:8888';
+      const proxyUrl = 'https://param:proxy@param-proxy.com:9999';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+        proxyUrl,
+      });
+
+      expect(client).toBeDefined();
+    });
+  });
+
+  describe('parseProxyUrl functionality', () => {
+    // We need to import the parseProxyUrl function or test it indirectly
+    it('should handle proxy URL with authentication', () => {
+      process.env.HTTPS_PROXY =
+        'https://username:password@proxy.example.com:8888';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+    });
+
+    it('should handle proxy URL without authentication', () => {
+      process.env.HTTPS_PROXY = 'https://proxy.example.com:8888';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+    });
+
+    it('should handle HTTP proxy URLs', () => {
+      process.env.HTTPS_PROXY = 'http://proxy.example.com:3128';
+
+      const client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+    });
+
+    it('should throw an error for invalid proxy URLs', () => {
+      process.env.HTTPS_PROXY = 'invalid-url';
+
+      expect(() => {
+        createApiClient({
+          apiBaseUrl: 'https://api.example.com',
+          account: 'test-account',
+          accessToken: 'test-token',
+        });
+      }).toThrow();
+    });
+
+    it('should use default ports when not specified', () => {
+      // Test HTTPS default port (443)
+      process.env.HTTPS_PROXY = 'https://proxy.example.com';
+
+      let client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+
+      // Test HTTP default port (80)
+      process.env.HTTPS_PROXY = 'http://proxy.example.com';
+
+      client = createApiClient({
+        apiBaseUrl: 'https://api.example.com',
+        account: 'test-account',
+        accessToken: 'test-token',
+      });
+
+      expect(client).toBeDefined();
+    });
+  });
+});
diff --git a/packages/integration-sdk-runtime/src/api/index.ts b/packages/integration-sdk-runtime/src/api/index.ts
index f30baa058..08b90cdd1 100644
--- a/packages/integration-sdk-runtime/src/api/index.ts
+++ b/packages/integration-sdk-runtime/src/api/index.ts
@@ -1,4 +1,5 @@
 import { Alpha, AlphaInterceptor, AlphaOptions } from '@lifeomic/alpha';
+import { AxiosProxyConfig } from 'axios';
 import { IntegrationError } from '@jupiterone/integration-sdk-core';
 import dotenv from 'dotenv';
 import dotenvExpand from 'dotenv-expand';
@@ -18,6 +19,7 @@ interface CreateApiClientInput {
   retryOptions?: RetryOptions;
   compressUploads?: boolean;
   alphaOptions?: AlphaOptions;
+  proxyUrl?: string;
 }
 
 interface RetryOptions {
@@ -43,6 +45,7 @@ export function createApiClient({
   retryOptions,
   compressUploads,
   alphaOptions,
+  proxyUrl,
 }: CreateApiClientInput): ApiClient {
   const headers: Record<string, string> = {
     'JupiterOne-Account': account,
@@ -52,10 +55,15 @@ export function createApiClient({
   if (accessToken) {
     headers.Authorization = `Bearer ${accessToken}`;
   }
+
+  const proxyUrlString = proxyUrl || getProxyFromEnvironment();
+  const proxy = proxyUrlString ? parseProxyUrl(proxyUrlString) : undefined;
+
   const opts: AlphaOptions = {
     baseURL: apiBaseUrl,
     headers,
     retry: retryOptions ?? {},
+    ...(proxy && { proxy }),
     ...alphaOptions,
   };
 
@@ -161,3 +169,26 @@ export const getApiKeyFromEnvironment = () =>
 
 export const getAccountFromEnvironment = () =>
   getFromEnv('JUPITERONE_ACCOUNT', IntegrationAccountRequiredError);
+
+function parseProxyUrl(proxyUrl: string) {
+  const url = new URL(proxyUrl);
+  const proxy: AxiosProxyConfig = {
+    host: url.hostname,
+    port: parseInt(url.port) || (url.protocol === 'https:' ? 443 : 80),
+    protocol: url.protocol.replace(':', ''),
+  };
+
+  if (url.username && url.password) {
+    proxy.auth = {
+      username: decodeURIComponent(url.username),
+      password: decodeURIComponent(url.password),
+    };
+  }
+
+  return proxy;
+}
+
+function getProxyFromEnvironment(): string | undefined {
+  dotenvExpand(dotenv.config());
+  return process.env.HTTPS_PROXY || process.env.https_proxy;
+}