diff --git a/.changeset/rude-jobs-yawn.md b/.changeset/rude-jobs-yawn.md
new file mode 100644
index 0000000000..10de869026
--- /dev/null
+++ b/.changeset/rude-jobs-yawn.md
@@ -0,0 +1,9 @@
+---
+'@clerk/nextjs': patch
+'@clerk/remix': patch
+'gatsby-plugin-clerk': patch
+'@clerk/shared': patch
+'@clerk/fastify': patch
+---
+
+Improve the default value for `CLERK_API_URL` by utilizing the publishable key to differentiate between local, staging and prod environments.
diff --git a/packages/clerk-js/src/utils/url.ts b/packages/clerk-js/src/utils/url.ts
index fd3a991c5d..61b787d53c 100644
--- a/packages/clerk-js/src/utils/url.ts
+++ b/packages/clerk-js/src/utils/url.ts
@@ -1,5 +1,7 @@
-import { camelToSnake, createDevOrStagingUrlCache } from '@clerk/shared';
 import { globs } from '@clerk/shared/globs';
+import { createDevOrStagingUrlCache } from '@clerk/shared/keys';
+import { camelToSnake } from '@clerk/shared/underscore';
+import { isCurrentDevAccountPortalOrigin, isLegacyDevAccountPortalOrigin } from '@clerk/shared/url';
 import type { SignUpResource } from '@clerk/types';
 
 import { joinPaths } from './path';
@@ -16,21 +18,6 @@ declare global {
 // This is used as a dummy base when we need to invoke "new URL()" but we don't care about the URL origin.
 const DUMMY_URL_BASE = 'http://clerk-dummy';
 
-export const DEV_OR_STAGING_SUFFIXES = [
-  '.lcl.dev',
-  '.stg.dev',
-  '.lclstage.dev',
-  '.stgstage.dev',
-  '.dev.lclclerk.com',
-  '.stg.lclclerk.com',
-  '.accounts.lclclerk.com',
-  'accountsstage.dev',
-  'accounts.dev',
-];
-
-export const LEGACY_DEV_SUFFIXES = ['.lcl.dev', '.lclstage.dev', '.lclclerk.com'];
-export const CURRENT_DEV_SUFFIXES = ['.accounts.dev', '.accountsstage.dev', '.accounts.lclclerk.com'];
-
 const BANNED_URI_PROTOCOLS = ['javascript:'] as const;
 
 const { isDevOrStagingUrl } = createDevOrStagingUrlCache();
@@ -52,28 +39,6 @@ export function isDevAccountPortalOrigin(hostname: string = window.location.host
   return res;
 }
 
-// Returns true for hosts such as:
-// * accounts.foo.bar-13.lcl.dev
-// * accounts.foo.bar-13.lclstage.dev
-// * accounts.foo.bar-13.dev.lclclerk.com
-function isLegacyDevAccountPortalOrigin(host: string): boolean {
-  return LEGACY_DEV_SUFFIXES.some(legacyDevSuffix => {
-    return host.startsWith('accounts.') && host.endsWith(legacyDevSuffix);
-  });
-}
-
-// Returns true for hosts such as:
-// * foo-bar-13.accounts.dev
-// * foo-bar-13.accountsstage.dev
-// * foo-bar-13.accounts.lclclerk.com
-// But false for:
-// * foo-bar-13.clerk.accounts.lclclerk.com
-function isCurrentDevAccountPortalOrigin(host: string): boolean {
-  return CURRENT_DEV_SUFFIXES.some(currentDevSuffix => {
-    return host.endsWith(currentDevSuffix) && !host.endsWith('.clerk' + currentDevSuffix);
-  });
-}
-
 export function getETLDPlusOneFromFrontendApi(frontendApi: string): string {
   return frontendApi.replace('clerk.', '');
 }
diff --git a/packages/fastify/src/constants.ts b/packages/fastify/src/constants.ts
index 1fab328e6e..6699d20ee0 100644
--- a/packages/fastify/src/constants.ts
+++ b/packages/fastify/src/constants.ts
@@ -1,9 +1,10 @@
 import { constants } from '@clerk/backend';
+import { apiUrlFromPublishableKey } from '@clerk/shared/apiUrlFromPublishableKey';
 
-export const API_URL = process.env.CLERK_API_URL || 'https://api.clerk.com';
 export const API_VERSION = process.env.CLERK_API_VERSION || 'v1';
 export const SECRET_KEY = process.env.CLERK_SECRET_KEY || '';
 export const PUBLISHABLE_KEY = process.env.CLERK_PUBLISHABLE_KEY || '';
+export const API_URL = process.env.CLERK_API_URL || apiUrlFromPublishableKey(PUBLISHABLE_KEY);
 export const JWT_KEY = process.env.CLERK_JWT_KEY || '';
 
 export const { Cookies, Headers } = constants;
diff --git a/packages/gatsby-plugin-clerk/src/constants.ts b/packages/gatsby-plugin-clerk/src/constants.ts
index c736e8e0fc..00d3f788c5 100644
--- a/packages/gatsby-plugin-clerk/src/constants.ts
+++ b/packages/gatsby-plugin-clerk/src/constants.ts
@@ -1,7 +1,9 @@
-export const API_URL = process.env.CLERK_API_URL || 'https://api.clerk.com';
+import { apiUrlFromPublishableKey } from '@clerk/shared/apiUrlFromPublishableKey';
+
+export const PUBLISHABLE_KEY = process.env.GATSBY_CLERK_PUBLISHABLE_KEY || '';
+export const API_URL = process.env.CLERK_API_URL || apiUrlFromPublishableKey(PUBLISHABLE_KEY);
 export const API_VERSION = process.env.CLERK_API_VERSION || 'v1';
 export const SECRET_KEY = process.env.CLERK_SECRET_KEY || '';
-export const PUBLISHABLE_KEY = process.env.GATSBY_CLERK_PUBLISHABLE_KEY || '';
 
 export const CLERK_JS = process.env.GATSBY_CLERK_JS;
 export const PROXY_URL = process.env.GATSBY_CLERK_PROXY_URL;
diff --git a/packages/nextjs/src/server/constants.ts b/packages/nextjs/src/server/constants.ts
index 774d7c8de5..00b7dcbe77 100644
--- a/packages/nextjs/src/server/constants.ts
+++ b/packages/nextjs/src/server/constants.ts
@@ -1,11 +1,12 @@
+import { apiUrlFromPublishableKey } from '@clerk/shared/apiUrlFromPublishableKey';
 import { isTruthy } from '@clerk/shared/underscore';
 
 export const CLERK_JS_VERSION = process.env.NEXT_PUBLIC_CLERK_JS_VERSION || '';
 export const CLERK_JS_URL = process.env.NEXT_PUBLIC_CLERK_JS || '';
-export const API_URL = process.env.CLERK_API_URL || 'https://api.clerk.com';
 export const API_VERSION = process.env.CLERK_API_VERSION || 'v1';
 export const SECRET_KEY = process.env.CLERK_SECRET_KEY || '';
 export const PUBLISHABLE_KEY = process.env.NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY || '';
+export const API_URL = process.env.CLERK_API_URL || apiUrlFromPublishableKey(PUBLISHABLE_KEY);
 export const DOMAIN = process.env.NEXT_PUBLIC_CLERK_DOMAIN || '';
 export const PROXY_URL = process.env.NEXT_PUBLIC_CLERK_PROXY_URL || '';
 export const IS_SATELLITE = isTruthy(process.env.NEXT_PUBLIC_CLERK_IS_SATELLITE) || false;
diff --git a/packages/nextjs/src/server/url.ts b/packages/nextjs/src/server/url.ts
index a659c3fbcd..f8dd3e2dff 100644
--- a/packages/nextjs/src/server/url.ts
+++ b/packages/nextjs/src/server/url.ts
@@ -1,8 +1,4 @@
-// TODO: This is a partial duplicate of part of packages/clerk-js/src/utils/url.ts
-// TODO: To be removed when we can extract this utility to @clerk/shared
-
-export const LEGACY_DEV_SUFFIXES = ['.lcl.dev', '.lclstage.dev', '.lclclerk.com'];
-export const CURRENT_DEV_SUFFIXES = ['.accounts.dev', '.accountsstage.dev', '.accounts.lclclerk.com'];
+import { isCurrentDevAccountPortalOrigin, isLegacyDevAccountPortalOrigin } from '@clerk/shared/url';
 
 const accountPortalCache = new Map<string, boolean>();
 
@@ -20,25 +16,3 @@ export function isDevAccountPortalOrigin(hostname: string): boolean {
 
   return res;
 }
-
-// Returns true for hosts such as:
-// * accounts.foo.bar-13.lcl.dev
-// * accounts.foo.bar-13.lclstage.dev
-// * accounts.foo.bar-13.dev.lclclerk.com
-function isLegacyDevAccountPortalOrigin(host: string): boolean {
-  return LEGACY_DEV_SUFFIXES.some(legacyDevSuffix => {
-    return host.startsWith('accounts.') && host.endsWith(legacyDevSuffix);
-  });
-}
-
-// Returns true for hosts such as:
-// * foo-bar-13.accounts.dev
-// * foo-bar-13.accountsstage.dev
-// * foo-bar-13.accounts.lclclerk.com
-// But false for:
-// * foo-bar-13.clerk.accounts.lclclerk.com
-function isCurrentDevAccountPortalOrigin(host: string): boolean {
-  return CURRENT_DEV_SUFFIXES.some(currentDevSuffix => {
-    return host.endsWith(currentDevSuffix) && !host.endsWith('.clerk' + currentDevSuffix);
-  });
-}
diff --git a/packages/remix/src/ssr/authenticateRequest.ts b/packages/remix/src/ssr/authenticateRequest.ts
index 4e3fca229c..7ba1180b03 100644
--- a/packages/remix/src/ssr/authenticateRequest.ts
+++ b/packages/remix/src/ssr/authenticateRequest.ts
@@ -1,5 +1,6 @@
 import type { RequestState } from '@clerk/backend';
 import { buildRequestUrl, Clerk } from '@clerk/backend';
+import { apiUrlFromPublishableKey } from '@clerk/shared/apiUrlFromPublishableKey';
 import { handleValueOrFn } from '@clerk/shared/handleValueOrFn';
 import { isDevelopmentFromApiKey } from '@clerk/shared/keys';
 import { isHttpOrHttps, isProxyUrlRelative } from '@clerk/shared/proxy';
@@ -36,7 +37,7 @@ export function authenticateRequest(args: LoaderFunctionArgs, opts: RootAuthLoad
 
   const jwtKey = opts.jwtKey || getEnvVariable('CLERK_JWT_KEY', context);
 
-  const apiUrl = getEnvVariable('CLERK_API_URL', context);
+  const apiUrl = getEnvVariable('CLERK_API_URL', context) || apiUrlFromPublishableKey(publishableKey);
 
   const domain = handleValueOrFn(opts.domain, new URL(request.url)) || getEnvVariable('CLERK_DOMAIN', context) || '';
 
diff --git a/packages/shared/.gitignore b/packages/shared/.gitignore
index 45af1b0ba8..e729b74667 100644
--- a/packages/shared/.gitignore
+++ b/packages/shared/.gitignore
@@ -16,4 +16,6 @@ poller
 proxy
 underscore
 url
-react
\ No newline at end of file
+react
+constants
+apiUrlFromPublishableKey
\ No newline at end of file
diff --git a/packages/shared/package.json b/packages/shared/package.json
index 20015baaaf..f016e2fd62 100644
--- a/packages/shared/package.json
+++ b/packages/shared/package.json
@@ -63,7 +63,9 @@
     "proxy",
     "underscore",
     "url",
-    "react"
+    "react",
+    "constants",
+    "apiUrlFromPublishableKey"
   ],
   "scripts": {
     "build": "tsup",
diff --git a/packages/shared/src/__tests__/apiUrlFromPublishableKey.test.ts b/packages/shared/src/__tests__/apiUrlFromPublishableKey.test.ts
new file mode 100644
index 0000000000..0783340956
--- /dev/null
+++ b/packages/shared/src/__tests__/apiUrlFromPublishableKey.test.ts
@@ -0,0 +1,18 @@
+import { apiUrlFromPublishableKey } from '../apiUrlFromPublishableKey';
+
+describe('apiUrlFromPublishableKey', () => {
+  test('returns the prod api url when given a prod publishable key', async () => {
+    const apiUrl = apiUrlFromPublishableKey('pk_test_bWFueS1zZWFsLTkwLmNsZXJrLmFjY291bnRzLmRldiQ');
+    expect(apiUrl).toBe('https://api.clerk.com');
+  });
+
+  test('returns the prod api url when given a staging publishable key', async () => {
+    const apiUrl = apiUrlFromPublishableKey('pk_test_aW1tdW5lLWhhd2stNjUuY2xlcmsuYWNjb3VudHNzdGFnZS5kZXYk');
+    expect(apiUrl).toBe('https://api.clerkstage.dev');
+  });
+
+  test('returns the prod api url when given a local publishable key', async () => {
+    const apiUrl = apiUrlFromPublishableKey('pk_test_cGF0aWVudC1nb29zZS01LmNsZXJrLmFjY291bnRzLmxjbGNsZXJrLmNvbSQ');
+    expect(apiUrl).toBe('https://api.lclclerk.com');
+  });
+});
diff --git a/packages/shared/src/apiUrlFromPublishableKey.ts b/packages/shared/src/apiUrlFromPublishableKey.ts
new file mode 100644
index 0000000000..432e952d2b
--- /dev/null
+++ b/packages/shared/src/apiUrlFromPublishableKey.ts
@@ -0,0 +1,13 @@
+import { LOCAL_API_URL, LOCAL_ENV_SUFFIXES, PROD_API_URL, STAGING_API_URL, STAGING_ENV_SUFFIXES } from './constants';
+import { parsePublishableKey } from './keys';
+
+export const apiUrlFromPublishableKey = (publishableKey: string) => {
+  const frontendApi = parsePublishableKey(publishableKey)?.frontendApi;
+  if (LOCAL_ENV_SUFFIXES.some(suffix => frontendApi?.endsWith(suffix))) {
+    return LOCAL_API_URL;
+  }
+  if (STAGING_ENV_SUFFIXES.some(suffix => frontendApi?.endsWith(suffix))) {
+    return STAGING_API_URL;
+  }
+  return PROD_API_URL;
+};
diff --git a/packages/shared/src/constants.ts b/packages/shared/src/constants.ts
new file mode 100644
index 0000000000..bf3fc97840
--- /dev/null
+++ b/packages/shared/src/constants.ts
@@ -0,0 +1,18 @@
+export const LEGACY_DEV_INSTANCE_SUFFIXES = ['.lcl.dev', '.lclstage.dev', '.lclclerk.com'];
+export const CURRENT_DEV_INSTANCE_SUFFIXES = ['.accounts.dev', '.accountsstage.dev', '.accounts.lclclerk.com'];
+export const DEV_OR_STAGING_SUFFIXES = [
+  '.lcl.dev',
+  '.stg.dev',
+  '.lclstage.dev',
+  '.stgstage.dev',
+  '.dev.lclclerk.com',
+  '.stg.lclclerk.com',
+  '.accounts.lclclerk.com',
+  'accountsstage.dev',
+  'accounts.dev',
+];
+export const LOCAL_ENV_SUFFIXES = ['.lcl.dev', 'lclstage.dev', '.lclclerk.com', '.accounts.lclclerk.com'];
+export const STAGING_ENV_SUFFIXES = ['.accountsstage.dev'];
+export const LOCAL_API_URL = 'https://api.lclclerk.com';
+export const STAGING_API_URL = 'https://api.clerkstage.dev';
+export const PROD_API_URL = 'https://api.clerk.com';
diff --git a/packages/shared/src/index.ts b/packages/shared/src/index.ts
index b5d8d07b76..e78f16b5cc 100644
--- a/packages/shared/src/index.ts
+++ b/packages/shared/src/index.ts
@@ -10,10 +10,11 @@
 
 export * from './utils';
 
-export { createWorkerTimers } from './workerTimers';
+export { apiUrlFromPublishableKey } from './apiUrlFromPublishableKey';
 export * from './browser';
 export { callWithRetry } from './callWithRetry';
 export * from './color';
+export * from './constants';
 export * from './date';
 export * from './deprecated';
 export * from './error';
@@ -27,3 +28,4 @@ export * from './poller';
 export * from './proxy';
 export * from './underscore';
 export * from './url';
+export { createWorkerTimers } from './workerTimers';
diff --git a/packages/shared/src/keys.ts b/packages/shared/src/keys.ts
index d2f4848f12..83f889075b 100644
--- a/packages/shared/src/keys.ts
+++ b/packages/shared/src/keys.ts
@@ -1,5 +1,6 @@
 import type { PublishableKey } from '@clerk/types';
 
+import { DEV_OR_STAGING_SUFFIXES } from './constants';
 import { isomorphicAtob } from './isomorphicAtob';
 
 const PUBLISHABLE_KEY_LIVE_PREFIX = 'pk_live_';
@@ -55,19 +56,6 @@ export function isLegacyFrontendApiKey(key: string) {
 }
 
 export function createDevOrStagingUrlCache() {
-  // TODO: Check if we can merge it with `./instance.ts#isStaging()`
-  const DEV_OR_STAGING_SUFFIXES = [
-    '.lcl.dev',
-    '.stg.dev',
-    '.lclstage.dev',
-    '.stgstage.dev',
-    '.dev.lclclerk.com',
-    '.stg.lclclerk.com',
-    '.accounts.lclclerk.com',
-    'accountsstage.dev',
-    'accounts.dev',
-  ];
-
   const devOrStagingUrlCache = new Map<string, boolean>();
 
   return {
diff --git a/packages/shared/src/url.ts b/packages/shared/src/url.ts
index dfadc27ed7..3ce2b373a3 100644
--- a/packages/shared/src/url.ts
+++ b/packages/shared/src/url.ts
@@ -1,3 +1,4 @@
+import { CURRENT_DEV_INSTANCE_SUFFIXES, LEGACY_DEV_INSTANCE_SUFFIXES } from './constants';
 import { isStaging } from './utils/instance';
 
 export function parseSearchParams(queryString = ''): URLSearchParams {
@@ -64,3 +65,25 @@ export const getScriptUrl = (
   const major = getClerkJsMajorVersionOrTag(frontendApi, pkgVersion);
   return `https://${noSchemeFrontendApi}/npm/@clerk/clerk-js@${clerkJSVersion || major}/dist/clerk.browser.js`;
 };
+
+// Returns true for hosts such as:
+// * accounts.foo.bar-13.lcl.dev
+// * accounts.foo.bar-13.lclstage.dev
+// * accounts.foo.bar-13.dev.lclclerk.com
+export function isLegacyDevAccountPortalOrigin(host: string): boolean {
+  return LEGACY_DEV_INSTANCE_SUFFIXES.some(legacyDevSuffix => {
+    return host.startsWith('accounts.') && host.endsWith(legacyDevSuffix);
+  });
+}
+
+// Returns true for hosts such as:
+// * foo-bar-13.accounts.dev
+// * foo-bar-13.accountsstage.dev
+// * foo-bar-13.accounts.lclclerk.com
+// But false for:
+// * foo-bar-13.clerk.accounts.lclclerk.com
+export function isCurrentDevAccountPortalOrigin(host: string): boolean {
+  return CURRENT_DEV_INSTANCE_SUFFIXES.some(currentDevSuffix => {
+    return host.endsWith(currentDevSuffix) && !host.endsWith('.clerk' + currentDevSuffix);
+  });
+}
diff --git a/packages/shared/src/utils/index.ts b/packages/shared/src/utils/index.ts
index 8838c7ed4b..6e35eadacd 100644
--- a/packages/shared/src/utils/index.ts
+++ b/packages/shared/src/utils/index.ts
@@ -1,6 +1,6 @@
 export * from './createDeferredPromise';
 export { isStaging } from './instance';
+export { logErrorInDevMode } from './logErrorInDevMode';
 export { noop } from './noop';
-export * from './runtimeEnvironment';
 export * from './runWithExponentialBackOff';
-export { logErrorInDevMode } from './logErrorInDevMode';
+export * from './runtimeEnvironment';
diff --git a/packages/shared/subpaths.mjs b/packages/shared/subpaths.mjs
index 6a1c22d8ec..56240619cb 100644
--- a/packages/shared/subpaths.mjs
+++ b/packages/shared/subpaths.mjs
@@ -20,6 +20,8 @@ export const subpathNames = [
   'proxy',
   'underscore',
   'url',
+  'constants',
+  'apiUrlFromPublishableKey',
 ];
 
 export const subpathFoldersBarrel = ['react'];