diff --git a/src/lib/api.ts b/src/lib/api.ts
index af453f1..a29e642 100644
--- a/src/lib/api.ts
+++ b/src/lib/api.ts
@@ -1,10 +1,11 @@
 import config from "../config.js";
+import { DOMAINS } from "./domains.js";
 
 export async function getLatestO11YBuildInfo(
   buildName: string,
   projectName: string,
 ) {
-  const buildsUrl = `https://api-observability.browserstack.com/ext/v1/builds/latest?build_name=${encodeURIComponent(
+  const buildsUrl = `${DOMAINS.API_OBSERVABILITY}/ext/v1/builds/latest?build_name=${encodeURIComponent(
     buildName,
   )}&project_name=${encodeURIComponent(projectName)}`;
 
diff --git a/src/lib/device-cache.ts b/src/lib/device-cache.ts
index 5131bb5..599518b 100644
--- a/src/lib/device-cache.ts
+++ b/src/lib/device-cache.ts
@@ -1,6 +1,7 @@
 import fs from "fs";
 import os from "os";
 import path from "path";
+import { DOMAINS } from "./domains.js";
 
 const CACHE_DIR = path.join(os.homedir(), ".browserstack", "combined_cache");
 const CACHE_FILE = path.join(CACHE_DIR, "data.json");
@@ -13,12 +14,9 @@ export enum BrowserStackProducts {
 }
 
 const URLS: Record<BrowserStackProducts, string> = {
-  [BrowserStackProducts.LIVE]:
-    "https://www.browserstack.com/list-of-browsers-and-platforms/live.json",
-  [BrowserStackProducts.APP_LIVE]:
-    "https://www.browserstack.com/list-of-browsers-and-platforms/app_live.json",
-  [BrowserStackProducts.APP_AUTOMATE]:
-    "https://www.browserstack.com/list-of-browsers-and-platforms/app_automate.json",
+  [BrowserStackProducts.LIVE]: `${DOMAINS.WWW}/list-of-browsers-and-platforms/live.json`,
+  [BrowserStackProducts.APP_LIVE]: `${DOMAINS.WWW}/list-of-browsers-and-platforms/app_live.json`,
+  [BrowserStackProducts.APP_AUTOMATE]: `${DOMAINS.WWW}/list-of-browsers-and-platforms/app_automate.json`,
 };
 
 /**
diff --git a/src/lib/domains.ts b/src/lib/domains.ts
new file mode 100644
index 0000000..8584bf9
--- /dev/null
+++ b/src/lib/domains.ts
@@ -0,0 +1,17 @@
+export const DOMAINS = {
+  API: process.env.BROWSERSTACK_API_DOMAIN || "https://api.browserstack.com",
+  API_CLOUD:
+    process.env.BROWSERSTACK_API_CLOUD_DOMAIN || "https://api-cloud.browserstack.com",
+  TEST_MANAGEMENT:
+    process.env.BROWSERSTACK_TEST_MGMT_DOMAIN || "https://test-management.browserstack.com",
+  API_OBSERVABILITY:
+    process.env.BROWSERSTACK_API_OBSERVABILITY_DOMAIN ||
+    "https://api-observability.browserstack.com",
+  LIVE: process.env.BROWSERSTACK_LIVE_DOMAIN || "https://live.browserstack.com",
+  WWW: process.env.BROWSERSTACK_WWW_DOMAIN || "https://www.browserstack.com",
+  APP_LIVE: process.env.BROWSERSTACK_APP_LIVE_DOMAIN || "https://app-live.browserstack.com",
+  API_ACCESSIBILITY:
+    process.env.BROWSERSTACK_API_ACCESSIBILITY_DOMAIN ||
+    "https://api-accessibility.browserstack.com",
+  SCANNER: process.env.BROWSERSTACK_SCANNER_DOMAIN || "https://scanner.browserstack.com",
+} as const;
diff --git a/src/lib/instrumentation.ts b/src/lib/instrumentation.ts
index e6eccb4..f8b0024 100644
--- a/src/lib/instrumentation.ts
+++ b/src/lib/instrumentation.ts
@@ -1,6 +1,7 @@
 import logger from "../logger.js";
 import config from "../config.js";
 import { createRequire } from "module";
+import { DOMAINS } from "./domains.js";
 const require = createRequire(import.meta.url);
 const packageJson = require("../../package.json");
 import axios from "axios";
@@ -27,7 +28,7 @@ export function trackMCP(
     return;
   }
 
-  const instrumentationEndpoint = "https://api.browserstack.com/sdk/v1/event";
+  const instrumentationEndpoint = `${DOMAINS.API}/sdk/v1/event`;
   const isSuccess = !error;
   const mcpClient = clientInfo?.name || "unknown";
 
diff --git a/src/tools/accessibility.ts b/src/tools/accessibility.ts
index 54b4647..76aab86 100644
--- a/src/tools/accessibility.ts
+++ b/src/tools/accessibility.ts
@@ -5,6 +5,7 @@ import { AccessibilityScanner } from "./accessiblity-utils/scanner.js";
 import { AccessibilityReportFetcher } from "./accessiblity-utils/report-fetcher.js";
 import { trackMCP } from "../lib/instrumentation.js";
 import { parseAccessibilityReportFromCSV } from "./accessiblity-utils/report-parser.js";
+import { DOMAINS } from "../lib/domains.js";
 
 const scanner = new AccessibilityScanner();
 const reportFetcher = new AccessibilityReportFetcher();
@@ -37,7 +38,7 @@ async function runAccessibilityScan(
       content: [
         {
           type: "text",
-          text: `❌ Accessibility scan "${name}" failed with status: ${status} , check the BrowserStack dashboard for more details [https://scanner.browserstack.com/site-scanner/scan-details/${name}].`,
+          text: `❌ Accessibility scan "${name}" failed with status: ${status} , check the BrowserStack dashboard for more details [${DOMAINS.SCANNER}/site-scanner/scan-details/${name}].`,
           isError: true,
         },
       ],
@@ -55,7 +56,7 @@ async function runAccessibilityScan(
     content: [
       {
         type: "text",
-        text: `✅ Accessibility scan "${name}" completed. check the BrowserStack dashboard for more details [https://scanner.browserstack.com/site-scanner/scan-details/${name}].`,
+        text: `✅ Accessibility scan "${name}" completed. check the BrowserStack dashboard for more details [${DOMAINS.SCANNER}/site-scanner/scan-details/${name}].`,
       },
       {
         type: "text",
diff --git a/src/tools/accessiblity-utils/report-fetcher.ts b/src/tools/accessiblity-utils/report-fetcher.ts
index 498ea20..ca4c51b 100644
--- a/src/tools/accessiblity-utils/report-fetcher.ts
+++ b/src/tools/accessiblity-utils/report-fetcher.ts
@@ -1,5 +1,6 @@
 import axios from "axios";
 import config from "../../config.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 interface ReportInitResponse {
   success: true;
@@ -21,7 +22,7 @@ export class AccessibilityReportFetcher {
 
   async getReportLink(scanId: string, scanRunId: string): Promise<string> {
     // Initiate CSV link generation
-    const initUrl = `https://api-accessibility.browserstack.com/api/website-scanner/v1/scans/${scanId}/scan_runs/issues?scan_run_id=${scanRunId}`;
+    const initUrl = `${DOMAINS.API_ACCESSIBILITY}/api/website-scanner/v1/scans/${scanId}/scan_runs/issues?scan_run_id=${scanRunId}`;
     const initResp = await axios.get<ReportInitResponse>(initUrl, {
       auth: this.auth,
     });
@@ -33,7 +34,7 @@ export class AccessibilityReportFetcher {
     const taskId = initResp.data.data.task_id;
 
     // Fetch the generated CSV link
-    const reportUrl = `https://api-accessibility.browserstack.com/api/website-scanner/v1/scans/${scanId}/scan_runs/issues?task_id=${encodeURIComponent(
+    const reportUrl = `${DOMAINS.API_ACCESSIBILITY}/api/website-scanner/v1/scans/${scanId}/scan_runs/issues?task_id=${encodeURIComponent(
       taskId,
     )}`;
     const reportResp = await axios.get<ReportResponse>(reportUrl, {
diff --git a/src/tools/accessiblity-utils/scanner.ts b/src/tools/accessiblity-utils/scanner.ts
index eb9a6da..d374134 100644
--- a/src/tools/accessiblity-utils/scanner.ts
+++ b/src/tools/accessiblity-utils/scanner.ts
@@ -6,6 +6,7 @@ import {
   ensureLocalBinarySetup,
   killExistingBrowserStackLocalProcesses,
 } from "../../lib/local.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 export interface AccessibilityScanResponse {
   success: boolean;
@@ -74,7 +75,7 @@ export class AccessibilityScanner {
 
     try {
       const { data } = await axios.post<AccessibilityScanResponse>(
-        "https://api-accessibility.browserstack.com/api/website-scanner/v1/scans",
+        `${DOMAINS.API_ACCESSIBILITY}/api/website-scanner/v1/scans`,
         requestBody,
         { auth: this.auth },
       );
@@ -99,7 +100,7 @@ export class AccessibilityScanner {
   ): Promise<AccessibilityScanStatus> {
     try {
       const { data } = await axios.get<AccessibilityScanStatus>(
-        `https://api-accessibility.browserstack.com/api/website-scanner/v1/scans/${scanId}/scan_runs/${scanRunId}/status`,
+        `${DOMAINS.API_ACCESSIBILITY}/api/website-scanner/v1/scans/${scanId}/scan_runs/${scanRunId}/status`,
         { auth: this.auth },
       );
       if (!data.success)
diff --git a/src/tools/appautomate-utils/appautomate.ts b/src/tools/appautomate-utils/appautomate.ts
index a52e622..c6b3d81 100644
--- a/src/tools/appautomate-utils/appautomate.ts
+++ b/src/tools/appautomate-utils/appautomate.ts
@@ -3,6 +3,7 @@ import axios from "axios";
 import config from "../../config.js";
 import FormData from "form-data";
 import { customFuzzySearch } from "../../lib/fuzzy.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 interface Device {
   device: string;
@@ -135,7 +136,7 @@ export async function uploadApp(appPath: string): Promise<string> {
   formData.append("file", fs.createReadStream(filePath));
 
   const response = await axios.post<UploadResponse>(
-    "https://api-cloud.browserstack.com/app-automate/upload",
+    `${DOMAINS.API_CLOUD}/app-automate/upload`,
     formData,
     {
       headers: {
diff --git a/src/tools/applive-utils/start-session.ts b/src/tools/applive-utils/start-session.ts
index 1b8af25..52edee4 100644
--- a/src/tools/applive-utils/start-session.ts
+++ b/src/tools/applive-utils/start-session.ts
@@ -9,6 +9,7 @@ import { uploadApp } from "./upload-app.js";
 import { findDeviceByName } from "./device-search.js";
 import { pickVersion } from "./version-utils.js";
 import { DeviceEntry } from "./types.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 interface StartSessionArgs {
   appPath: string;
@@ -76,7 +77,7 @@ export async function startSession(args: StartSessionArgs): Promise<string> {
     speed: "1",
     start: "true",
   });
-  const launchUrl = `https://app-live.browserstack.com/dashboard#${params.toString()}&device=${deviceParam}`;
+  const launchUrl = `${DOMAINS.APP_LIVE}/dashboard#${params.toString()}&device=${deviceParam}`;
 
   openBrowser(launchUrl);
   return launchUrl + note;
diff --git a/src/tools/applive-utils/upload-app.ts b/src/tools/applive-utils/upload-app.ts
index a6dc756..9b8be0c 100644
--- a/src/tools/applive-utils/upload-app.ts
+++ b/src/tools/applive-utils/upload-app.ts
@@ -2,7 +2,7 @@ import axios, { AxiosError } from "axios";
 import FormData from "form-data";
 import fs from "fs";
 import config from "../../config.js";
-
+import { DOMAINS } from "../../lib/domains.js";
 interface UploadResponse {
   app_url: string;
 }
@@ -17,7 +17,7 @@ export async function uploadApp(filePath: string): Promise<UploadResponse> {
 
   try {
     const response = await axios.post<UploadResponse>(
-      "https://api-cloud.browserstack.com/app-live/upload",
+      `${DOMAINS.API_CLOUD}/app-live/upload`,
       formData,
       {
         headers: {
diff --git a/src/tools/automate-utils/fetch-screenshots.ts b/src/tools/automate-utils/fetch-screenshots.ts
index eabbc7a..100190d 100644
--- a/src/tools/automate-utils/fetch-screenshots.ts
+++ b/src/tools/automate-utils/fetch-screenshots.ts
@@ -1,6 +1,7 @@
 import config from "../../config.js";
 import { assertOkResponse, maybeCompressBase64 } from "../../lib/utils.js";
 import { SessionType } from "../../lib/constants.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 //Extracts screenshot URLs from BrowserStack session logs
 async function extractScreenshotUrls(
@@ -10,7 +11,7 @@ async function extractScreenshotUrls(
   const credentials = `${config.browserstackUsername}:${config.browserstackAccessKey}`;
   const auth = Buffer.from(credentials).toString("base64");
 
-  const baseUrl = `https://api.browserstack.com/${sessionType === SessionType.Automate ? "automate" : "app-automate"}`;
+  const baseUrl = `${DOMAINS.API}/${sessionType === SessionType.Automate ? "automate" : "app-automate"}`;
 
   const url = `${baseUrl}/sessions/${sessionId}/logs`;
   const response = await fetch(url, {
diff --git a/src/tools/failurelogs-utils/app-automate.ts b/src/tools/failurelogs-utils/app-automate.ts
index 7aff74a..5da9d92 100644
--- a/src/tools/failurelogs-utils/app-automate.ts
+++ b/src/tools/failurelogs-utils/app-automate.ts
@@ -1,5 +1,6 @@
 import config from "../../config.js";
 import { filterLinesByKeywords, validateLogResponse } from "./utils.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 const auth = Buffer.from(
   `${config.browserstackUsername}:${config.browserstackAccessKey}`,
@@ -10,7 +11,7 @@ export async function retrieveDeviceLogs(
   sessionId: string,
   buildId: string,
 ): Promise<string> {
-  const url = `https://api.browserstack.com/app-automate/builds/${buildId}/sessions/${sessionId}/deviceLogs`;
+  const url = `${DOMAINS.API}/app-automate/builds/${buildId}/sessions/${sessionId}/deviceLogs`;
 
   const response = await fetch(url, {
     headers: {
@@ -34,7 +35,7 @@ export async function retrieveAppiumLogs(
   sessionId: string,
   buildId: string,
 ): Promise<string> {
-  const url = `https://api.browserstack.com/app-automate/builds/${buildId}/sessions/${sessionId}/appiumlogs`;
+  const url = `${DOMAINS.API}/app-automate/builds/${buildId}/sessions/${sessionId}/appiumlogs`;
 
   const response = await fetch(url, {
     headers: {
@@ -58,7 +59,7 @@ export async function retrieveCrashLogs(
   sessionId: string,
   buildId: string,
 ): Promise<string> {
-  const url = `https://api.browserstack.com/app-automate/builds/${buildId}/sessions/${sessionId}/crashlogs`;
+  const url = `${DOMAINS.API}/app-automate/builds/${buildId}/sessions/${sessionId}/crashlogs`;
 
   const response = await fetch(url, {
     headers: {
diff --git a/src/tools/failurelogs-utils/automate.ts b/src/tools/failurelogs-utils/automate.ts
index e8b5e95..415d303 100644
--- a/src/tools/failurelogs-utils/automate.ts
+++ b/src/tools/failurelogs-utils/automate.ts
@@ -5,6 +5,7 @@ import {
   filterLinesByKeywords,
   validateLogResponse,
 } from "./utils.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 const auth = Buffer.from(
   `${config.browserstackUsername}:${config.browserstackAccessKey}`,
@@ -14,7 +15,7 @@ const auth = Buffer.from(
 export async function retrieveNetworkFailures(
   sessionId: string,
 ): Promise<string> {
-  const url = `https://api.browserstack.com/automate/sessions/${sessionId}/networklogs`;
+  const url = `${DOMAINS.API}/automate/sessions/${sessionId}/networklogs`;
 
   const response = await fetch(url, {
     method: "GET",
@@ -62,7 +63,7 @@ export async function retrieveNetworkFailures(
 export async function retrieveSessionFailures(
   sessionId: string,
 ): Promise<string> {
-  const url = `https://api.browserstack.com/automate/sessions/${sessionId}/logs`;
+  const url = `${DOMAINS.API}/automate/sessions/${sessionId}/logs`;
 
   const response = await fetch(url, {
     headers: {
@@ -85,7 +86,7 @@ export async function retrieveSessionFailures(
 export async function retrieveConsoleFailures(
   sessionId: string,
 ): Promise<string> {
-  const url = `https://api.browserstack.com/automate/sessions/${sessionId}/consolelogs`;
+  const url = `${DOMAINS.API}/automate/sessions/${sessionId}/consolelogs`;
 
   const response = await fetch(url, {
     headers: {
diff --git a/src/tools/live-utils/start-session.ts b/src/tools/live-utils/start-session.ts
index 1efb776..1b47e5a 100644
--- a/src/tools/live-utils/start-session.ts
+++ b/src/tools/live-utils/start-session.ts
@@ -2,6 +2,7 @@ import logger from "../../logger.js";
 import childProcess from "child_process";
 import { filterDesktop } from "./desktop-filter.js";
 import { filterMobile } from "./mobile-filter.js";
+import { DOMAINS } from "../../lib/domains.js";
 import {
   DesktopSearchArgs,
   MobileSearchArgs,
@@ -71,7 +72,7 @@ function buildDesktopUrl(
     local: isLocal ? "true" : "false",
     start: "true",
   });
-  return `https://live.browserstack.com/dashboard#${params.toString()}`;
+  return `${DOMAINS.LIVE}/dashboard#${params.toString()}`;
 }
 
 function buildMobileUrl(
@@ -97,7 +98,7 @@ function buildMobileUrl(
     local: isLocal ? "true" : "false",
     start: "true",
   });
-  return `https://live.browserstack.com/dashboard#${params.toString()}`;
+  return `${DOMAINS.LIVE}/dashboard#${params.toString()}`;
 }
 
 // ——— Open a browser window ———
diff --git a/src/tools/selfheal-utils/selfheal.ts b/src/tools/selfheal-utils/selfheal.ts
index f9b837b..1834227 100644
--- a/src/tools/selfheal-utils/selfheal.ts
+++ b/src/tools/selfheal-utils/selfheal.ts
@@ -1,6 +1,6 @@
 import { assertOkResponse } from "../../lib/utils.js";
 import config from "../../config.js";
-
+import { DOMAINS } from "../../lib/domains.js";
 interface SelectorMapping {
   originalSelector: string;
   healedSelector: string;
@@ -13,7 +13,7 @@ interface SelectorMapping {
 export async function getSelfHealSelectors(sessionId: string) {
   const credentials = `${config.browserstackUsername}:${config.browserstackAccessKey}`;
   const auth = Buffer.from(credentials).toString("base64");
-  const url = `https://api.browserstack.com/automate/sessions/${sessionId}/logs`;
+  const url = `${DOMAINS.API_CLOUD}/automate/sessions/${sessionId}/logs`;
 
   const response = await fetch(url, {
     headers: {
diff --git a/src/tools/testmanagement-utils/TCG-utils/api.ts b/src/tools/testmanagement-utils/TCG-utils/api.ts
index 7fd1d38..5a8a07f 100644
--- a/src/tools/testmanagement-utils/TCG-utils/api.ts
+++ b/src/tools/testmanagement-utils/TCG-utils/api.ts
@@ -13,6 +13,7 @@ import {
 } from "./types.js";
 import { createTestCasePayload } from "./helpers.js";
 import config from "../../../config.js";
+import { DOMAINS } from "../../../lib/domains.js";
 
 /**
  * Fetch default and custom form fields for a project.
@@ -46,7 +47,7 @@ export async function triggerTestCaseGeneration(
       folderId,
       projectId,
       source,
-      webhookUrl: `https://test-management.browserstack.com/api/v1/projects/${projectId}/folder/${folderId}/webhooks/tcg`,
+      webhookUrl: `${DOMAINS.TEST_MANAGEMENT}/api/v1/projects/${projectId}/folder/${folderId}/webhooks/tcg`,
     },
     {
       headers: {
@@ -343,7 +344,7 @@ export async function bulkCreateTestCases(
 export async function projectIdentifierToId(
   projectId: string,
 ): Promise<string> {
-  const url = `https://test-management.browserstack.com/api/v1/projects/?q=${projectId}`;
+  const url = `${DOMAINS.TEST_MANAGEMENT}/api/v1/projects/?q=${projectId}`;
 
   const response = await axios.get(url, {
     headers: {
diff --git a/src/tools/testmanagement-utils/TCG-utils/config.ts b/src/tools/testmanagement-utils/TCG-utils/config.ts
index 4762e40..297f60a 100644
--- a/src/tools/testmanagement-utils/TCG-utils/config.ts
+++ b/src/tools/testmanagement-utils/TCG-utils/config.ts
@@ -1,10 +1,9 @@
-export const TCG_TRIGGER_URL =
-  "https://test-management.browserstack.com/api/v1/integration/tcg/test-generation/suggest-test-cases";
-export const TCG_POLL_URL =
-  "https://test-management.browserstack.com/api/v1/integration/tcg/test-generation/test-cases-polling";
-export const FETCH_DETAILS_URL =
-  "https://test-management.browserstack.com/api/v1/integration/tcg/test-generation/fetch-test-case-details";
+import { DOMAINS } from "../../../lib/domains.js";
+
+export const TCG_TRIGGER_URL = `${DOMAINS.TEST_MANAGEMENT}/api/v1/integration/tcg/test-generation/suggest-test-cases`;
+export const TCG_POLL_URL = `${DOMAINS.TEST_MANAGEMENT}/api/v1/integration/tcg/test-generation/test-cases-polling`;
+export const FETCH_DETAILS_URL = `${DOMAINS.TEST_MANAGEMENT}/api/v1/integration/tcg/test-generation/fetch-test-case-details`;
 export const FORM_FIELDS_URL = (projectId: string): string =>
-  `https://test-management.browserstack.com/api/v1/projects/${projectId}/form-fields-v2`;
+  `${DOMAINS.TEST_MANAGEMENT}/api/v1/projects/${projectId}/form-fields-v2`;
 export const BULK_CREATE_URL = (projectId: string, folderId: string): string =>
-  `https://test-management.browserstack.com/api/v1/projects/${projectId}/folder/${folderId}/bulk-test-cases`;
+  `${DOMAINS.TEST_MANAGEMENT}/api/v1/projects/${projectId}/folder/${folderId}/bulk-test-cases`;
diff --git a/src/tools/testmanagement-utils/add-test-result.ts b/src/tools/testmanagement-utils/add-test-result.ts
index b8be68c..2ca82c3 100644
--- a/src/tools/testmanagement-utils/add-test-result.ts
+++ b/src/tools/testmanagement-utils/add-test-result.ts
@@ -3,7 +3,7 @@ import config from "../../config.js";
 import { z } from "zod";
 import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
 import { formatAxiosError } from "../../lib/error.js";
-
+import { DOMAINS } from "../../lib/domains.js";
 /**
  * Schema for adding a test result to a test run.
  */
@@ -36,7 +36,7 @@ export async function addTestResult(
 ): Promise<CallToolResult> {
   try {
     const args = AddTestResultSchema.parse(rawArgs);
-    const url = `https://test-management.browserstack.com/api/v2/projects/${encodeURIComponent(
+    const url = `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects/${encodeURIComponent(
       args.project_identifier,
     )}/test-runs/${encodeURIComponent(args.test_run_id)}/results`;
 
diff --git a/src/tools/testmanagement-utils/create-project-folder.ts b/src/tools/testmanagement-utils/create-project-folder.ts
index ef83570..0ff685d 100644
--- a/src/tools/testmanagement-utils/create-project-folder.ts
+++ b/src/tools/testmanagement-utils/create-project-folder.ts
@@ -2,8 +2,9 @@ import axios from "axios";
 import config from "../../config.js";
 import { z } from "zod";
 import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
-import { formatAxiosError } from "../../lib/error.js"; // or correct path
+import { formatAxiosError } from "../../lib/error.js";
 import { projectIdentifierToId } from "../testmanagement-utils/TCG-utils/api.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 // Schema for combined project/folder creation
 export const CreateProjFoldSchema = z.object({
@@ -59,7 +60,7 @@ export async function createProjectOrFolder(
   if (project_name) {
     try {
       const res = await axios.post(
-        "https://test-management.browserstack.com/api/v2/projects",
+        `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects`,
         { project: { name: project_name, description: project_description } },
         {
           auth: {
@@ -88,7 +89,7 @@ export async function createProjectOrFolder(
       throw new Error("Cannot create folder without project_identifier.");
     try {
       const res = await axios.post(
-        `https://test-management.browserstack.com/api/v2/projects/${encodeURIComponent(
+        `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects/${encodeURIComponent(
           projId,
         )}/folders`,
         {
@@ -123,7 +124,7 @@ export async function createProjectOrFolder(
               - ID: ${folder.id}
               - Name: ${folder.name}
               - Project Identifier: ${projId}
-            Access it here: https://test-management.browserstack.com/projects/${projectId}/folder/${folder.id}/`,
+            Access it here: ${DOMAINS.TEST_MANAGEMENT}/projects/${projectId}/folder/${folder.id}/`,
           },
         ],
       };
diff --git a/src/tools/testmanagement-utils/create-testcase.ts b/src/tools/testmanagement-utils/create-testcase.ts
index bb9029a..67566fc 100644
--- a/src/tools/testmanagement-utils/create-testcase.ts
+++ b/src/tools/testmanagement-utils/create-testcase.ts
@@ -4,6 +4,7 @@ import { z } from "zod";
 import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
 import { formatAxiosError } from "../../lib/error.js"; // or correct
 import { projectIdentifierToId } from "./TCG-utils/api.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 interface TestCaseStep {
   step: string;
@@ -145,7 +146,7 @@ export async function createTestCase(
 
   try {
     const response = await axios.post<TestCaseResponse>(
-      `https://test-management.browserstack.com/api/v2/projects/${encodeURIComponent(
+      `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects/${encodeURIComponent(
         params.project_identifier,
       )}/folders/${encodeURIComponent(params.folder_id)}/test-cases`,
       body,
@@ -185,7 +186,7 @@ export async function createTestCase(
             - Identifier: ${tc.identifier}
             - Title: ${tc.title}
 
-          You can view it here: https://test-management.browserstack.com/projects/${projectId}/folder/search?q=${tc.identifier}`,
+          You can view it here: ${DOMAINS.TEST_MANAGEMENT}/projects/${projectId}/folder/search?q=${tc.identifier}`,
         },
         {
           type: "text",
diff --git a/src/tools/testmanagement-utils/create-testrun.ts b/src/tools/testmanagement-utils/create-testrun.ts
index 2b8b4c6..e181bf9 100644
--- a/src/tools/testmanagement-utils/create-testrun.ts
+++ b/src/tools/testmanagement-utils/create-testrun.ts
@@ -3,6 +3,7 @@ import config from "../../config.js";
 import { z } from "zod";
 import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
 import { formatAxiosError } from "../../lib/error.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 /**
  * Schema for creating a test run.
@@ -64,7 +65,7 @@ export async function createTestRun(
     };
     const args = CreateTestRunSchema.parse(inputArgs);
 
-    const url = `https://test-management.browserstack.com/api/v2/projects/${encodeURIComponent(
+    const url = `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects/${encodeURIComponent(
       args.project_identifier,
     )}/test-runs`;
 
diff --git a/src/tools/testmanagement-utils/list-testcases.ts b/src/tools/testmanagement-utils/list-testcases.ts
index f882830..9ecd815 100644
--- a/src/tools/testmanagement-utils/list-testcases.ts
+++ b/src/tools/testmanagement-utils/list-testcases.ts
@@ -3,6 +3,7 @@ import config from "../../config.js";
 import { z } from "zod";
 import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
 import { formatAxiosError } from "../../lib/error.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 /**
  * Schema for listing test cases with optional filters.
@@ -47,7 +48,7 @@ export async function listTestCases(
     if (args.priority) params.append("priority", args.priority);
     if (args.p !== undefined) params.append("p", args.p.toString());
 
-    const url = `https://test-management.browserstack.com/api/v2/projects/${encodeURIComponent(
+    const url = `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects/${encodeURIComponent(
       args.project_identifier,
     )}/test-cases?${params.toString()}`;
 
diff --git a/src/tools/testmanagement-utils/list-testruns.ts b/src/tools/testmanagement-utils/list-testruns.ts
index 5bad0bc..3f29474 100644
--- a/src/tools/testmanagement-utils/list-testruns.ts
+++ b/src/tools/testmanagement-utils/list-testruns.ts
@@ -3,6 +3,7 @@ import config from "../../config.js";
 import { z } from "zod";
 import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
 import { formatAxiosError } from "../../lib/error.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 /**
  * Schema for listing test runs with optional filters.
@@ -34,7 +35,7 @@ export async function listTestRuns(
     }
 
     const url =
-      `https://test-management.browserstack.com/api/v2/projects/${encodeURIComponent(
+      `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects/${encodeURIComponent(
         args.project_identifier,
       )}/test-runs?` + params.toString();
 
diff --git a/src/tools/testmanagement-utils/update-testrun.ts b/src/tools/testmanagement-utils/update-testrun.ts
index ed8c8d0..8a45208 100644
--- a/src/tools/testmanagement-utils/update-testrun.ts
+++ b/src/tools/testmanagement-utils/update-testrun.ts
@@ -3,6 +3,7 @@ import config from "../../config.js";
 import { z } from "zod";
 import { CallToolResult } from "@modelcontextprotocol/sdk/types.js";
 import { formatAxiosError } from "../../lib/error.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 /**
  * Schema for updating a test run with partial fields.
@@ -38,7 +39,7 @@ export async function updateTestRun(
 ): Promise<CallToolResult> {
   try {
     const body = { test_run: args.test_run };
-    const url = `https://test-management.browserstack.com/api/v2/projects/${encodeURIComponent(
+    const url = `${DOMAINS.TEST_MANAGEMENT}/api/v2/projects/${encodeURIComponent(
       args.project_identifier,
     )}/test-runs/${encodeURIComponent(args.test_run_id)}/update`;
 
diff --git a/src/tools/testmanagement-utils/upload-file.ts b/src/tools/testmanagement-utils/upload-file.ts
index 3f76c2e..4c19b0d 100644
--- a/src/tools/testmanagement-utils/upload-file.ts
+++ b/src/tools/testmanagement-utils/upload-file.ts
@@ -8,6 +8,7 @@ import { v4 as uuidv4 } from "uuid";
 import config from "../../config.js";
 import { signedUrlMap } from "../../lib/inmemory-store.js";
 import { projectIdentifierToId } from "./TCG-utils/api.js";
+import { DOMAINS } from "../../lib/domains.js";
 
 /**
  * Schema for the upload file tool
@@ -51,7 +52,7 @@ export async function uploadFile(
     const formData = new FormData();
     formData.append("attachments[]", fs.createReadStream(file_path));
 
-    const uploadUrl = `https://test-management.browserstack.com/api/v1/projects/${projectIdResponse}/generic/attachments/ai_uploads`;
+    const uploadUrl = `${DOMAINS.TEST_MANAGEMENT}/api/v1/projects/${projectIdResponse}/generic/attachments/ai_uploads`;
 
     const response = await axios.post(uploadUrl, formData, {
       headers: {