diff --git a/packages/core-backend/CHANGELOG.md b/packages/core-backend/CHANGELOG.md
index 607833768cd..b21394178b0 100644
--- a/packages/core-backend/CHANGELOG.md
+++ b/packages/core-backend/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add optional `apiUrls` option to `ApiPlatformClientOptions`, allowing API base URLs (accounts, prices, token, tokens) to be overridden per client instance, e.g. from client env vars; unspecified services fall back to the production `API_URLS` ([#10196](https://github.com/MetaMask/core/pull/10196))
+
 ### Changed
 
 - **BREAKING:** Accounts API `V2SupportedNetworksResponse` now uses CAIP-2 string arrays for both `fullSupport` and `partialSupport`, replacing decimal `fullSupport` and object-shaped `partialSupport.balances` ([#10144](https://github.com/MetaMask/core/pull/10144))
diff --git a/packages/core-backend/src/api/accounts/client.ts b/packages/core-backend/src/api/accounts/client.ts
index 4b5468abbd1..9c4765035ec 100644
--- a/packages/core-backend/src/api/accounts/client.ts
+++ b/packages/core-backend/src/api/accounts/client.ts
@@ -17,12 +17,7 @@ import type {
   QueryFunctionContext,
 } from '@tanstack/query-core';
 
-import {
-  BaseApiClient,
-  API_URLS,
-  STALE_TIMES,
-  GC_TIMES,
-} from '../base-client.js';
+import { BaseApiClient, STALE_TIMES, GC_TIMES } from '../base-client.js';
 import { getQueryOptionsOverrides } from '../shared-types.js';
 import type { FetchOptions } from '../shared-types.js';
 import type {
@@ -97,7 +92,7 @@ export class AccountsApiClient extends BaseApiClient {
       queryKey: ['accounts', 'v1SupportedNetworks'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1SupportedNetworksResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v1/supportedNetworks',
           { signal },
         ),
@@ -134,7 +129,7 @@ export class AccountsApiClient extends BaseApiClient {
       queryKey: ['accounts', 'v2SupportedNetworks'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V2SupportedNetworksResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v2/supportedNetworks',
           { signal },
         ),
@@ -198,7 +193,7 @@ export class AccountsApiClient extends BaseApiClient {
           return { activeNetworks: [] };
         }
         return this.fetch<V2ActiveNetworksResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v2/activeNetworks',
           {
             signal,
@@ -289,7 +284,7 @@ export class AccountsApiClient extends BaseApiClient {
           return { count: 0, balances: [], unprocessedNetworks: [] };
         }
         return this.fetch<V2BalancesResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           `/v2/accounts/${address}/balances`,
           {
             signal,
@@ -373,7 +368,7 @@ export class AccountsApiClient extends BaseApiClient {
           return { count: 0, balances: [], unprocessedNetworks: [] };
         }
         return this.fetch<V4BalancesResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v4/multiaccount/balances',
           {
             signal,
@@ -457,7 +452,7 @@ export class AccountsApiClient extends BaseApiClient {
           return { count: 0, unprocessedNetworks: [], balances: [] };
         }
         return this.fetch<V5BalancesResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v5/multiaccount/balances',
           {
             signal,
@@ -584,7 +579,7 @@ export class AccountsApiClient extends BaseApiClient {
           };
         }
         return this.fetch<V6BalancesResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v6/multiaccount/balances',
           {
             signal,
@@ -709,7 +704,7 @@ export class AccountsApiClient extends BaseApiClient {
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1TransactionByHashResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           `/v1/networks/${chainId}/transactions/${txHash}`,
           {
             signal,
@@ -806,7 +801,7 @@ export class AccountsApiClient extends BaseApiClient {
           return { data: [], pageInfo: { count: 0, hasNextPage: false } };
         }
         return this.fetch<V1AccountTransactionsResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           `/v1/accounts/${address}/transactions`,
           {
             signal,
@@ -914,7 +909,7 @@ export class AccountsApiClient extends BaseApiClient {
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V4MultiAccountTransactionsResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v4/multiaccount/transactions',
           {
             signal,
@@ -1006,7 +1001,7 @@ export class AccountsApiClient extends BaseApiClient {
         signal?: AbortSignal;
       }) =>
         this.fetch<V4MultiAccountTransactionsResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           '/v4/multiaccount/transactions',
           {
             signal,
@@ -1106,7 +1101,7 @@ export class AccountsApiClient extends BaseApiClient {
         signal,
       }: QueryFunctionContext): Promise<V1AccountRelationshipResult> =>
         this.fetch<V1AccountRelationshipResult>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           `/v1/networks/${chainId}/accounts/${from}/relationships/${to}`,
           { signal },
         ),
@@ -1175,7 +1170,7 @@ export class AccountsApiClient extends BaseApiClient {
           return { data: [], pageInfo: { count: 0, hasNextPage: false } };
         }
         return this.fetch<V2NftsResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           `/v2/accounts/${address}/nfts`,
           {
             signal,
@@ -1253,7 +1248,7 @@ export class AccountsApiClient extends BaseApiClient {
           return { data: [] };
         }
         return this.fetch<V2TokensResponse>(
-          API_URLS.ACCOUNTS,
+          this.apiUrls.ACCOUNTS,
           `/v2/accounts/${address}/tokens`,
           {
             signal,
diff --git a/packages/core-backend/src/api/base-client.test.ts b/packages/core-backend/src/api/base-client.test.ts
index 60150c44849..ac5bd082585 100644
--- a/packages/core-backend/src/api/base-client.test.ts
+++ b/packages/core-backend/src/api/base-client.test.ts
@@ -76,6 +76,40 @@ describe('BaseApiClient', () => {
     });
   });
 
+  describe('API URL overrides', () => {
+    beforeEach(() => {
+      mockFetch.mockReset();
+      mockFetch.mockResolvedValue(
+        createMockResponse({ supportedNetworks: [] }),
+      );
+    });
+
+    it('uses the production URL by default', async () => {
+      const client = new AccountsApiClient({
+        clientProduct: 'test-product',
+      });
+
+      await client.fetchV1SupportedNetworks();
+
+      expect(String(mockFetch.mock.calls[0]?.[0])).toMatch(
+        'https://accounts.api.cx.metamask.io/',
+      );
+    });
+
+    it('uses the overridden URL when apiUrls is provided', async () => {
+      const client = new AccountsApiClient({
+        clientProduct: 'test-product',
+        apiUrls: { ACCOUNTS: 'https://accounts.dev-api.cx.metamask.io' },
+      });
+
+      await client.fetchV1SupportedNetworks();
+
+      expect(String(mockFetch.mock.calls[0]?.[0])).toMatch(
+        'https://accounts.dev-api.cx.metamask.io/',
+      );
+    });
+  });
+
   describe('bearer token timeout', () => {
     /**
      * Creates a client whose token provider only resolves when told to.
diff --git a/packages/core-backend/src/api/base-client.ts b/packages/core-backend/src/api/base-client.ts
index a5636a39477..54a429a3180 100644
--- a/packages/core-backend/src/api/base-client.ts
+++ b/packages/core-backend/src/api/base-client.ts
@@ -14,7 +14,7 @@ import {
   shouldRetry,
   HttpError,
 } from './shared-types.js';
-import type { ApiPlatformClientOptions } from './shared-types.js';
+import type { ApiPlatformClientOptions, ApiUrls } from './shared-types.js';
 
 // Auth query keys - shared for token management across clients
 export const authQueryKeys = {
@@ -47,6 +47,9 @@ export class BaseApiClient {
 
   protected readonly authTokenTimeout: number;
 
+  /** Resolved API base URLs (production defaults merged with any overrides). */
+  readonly apiUrls: ApiUrls;
+
   readonly #queryClientInstance: QueryClient;
 
   /**
@@ -78,6 +81,7 @@ export class BaseApiClient {
     this.getBearerToken = options.getBearerToken;
     this.authTokenTimeout =
       options.authTokenTimeout ?? DEFAULT_AUTH_TOKEN_TIMEOUT;
+    this.apiUrls = { ...API_URLS, ...options.apiUrls };
 
     this.#queryClientInstance =
       options.queryClient ??
@@ -213,5 +217,5 @@ export class BaseApiClient {
   }
 }
 
-// Re-export constants for use by API clients
-export { API_URLS, STALE_TIMES, GC_TIMES, HttpError };
+// Re-export cache timings for use by API clients
+export { STALE_TIMES, GC_TIMES };
diff --git a/packages/core-backend/src/api/index.ts b/packages/core-backend/src/api/index.ts
index b0d78234e1a..cd4c15db4f8 100644
--- a/packages/core-backend/src/api/index.ts
+++ b/packages/core-backend/src/api/index.ts
@@ -9,6 +9,7 @@ export type {
   SupportedCurrency,
   MarketDataDetails,
   ApiPlatformClientOptions,
+  ApiUrls,
   FetchOptions,
 } from './shared-types.js';
 export {
diff --git a/packages/core-backend/src/api/prices/client.ts b/packages/core-backend/src/api/prices/client.ts
index f8cc86fa993..693bff25438 100644
--- a/packages/core-backend/src/api/prices/client.ts
+++ b/packages/core-backend/src/api/prices/client.ts
@@ -14,12 +14,7 @@ import type {
   QueryFunctionContext,
 } from '@tanstack/query-core';
 
-import {
-  BaseApiClient,
-  API_URLS,
-  STALE_TIMES,
-  GC_TIMES,
-} from '../base-client.js';
+import { BaseApiClient, STALE_TIMES, GC_TIMES } from '../base-client.js';
 import { getQueryOptionsOverrides } from '../shared-types.js';
 import type {
   FetchOptions,
@@ -70,7 +65,7 @@ export class PricesApiClient extends BaseApiClient {
       queryKey: ['prices', 'v1SupportedNetworks'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<PriceSupportedNetworksResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           '/v1/supportedNetworks',
           { signal },
         ),
@@ -107,7 +102,7 @@ export class PricesApiClient extends BaseApiClient {
       queryKey: ['prices', 'v2SupportedNetworks'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<PriceSupportedNetworksResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           '/v2/supportedNetworks',
           { signal },
         ),
@@ -155,7 +150,7 @@ export class PricesApiClient extends BaseApiClient {
           return {};
         }
         return this.fetch<V1ExchangeRatesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           '/v1/exchange-rates',
           {
             signal,
@@ -201,7 +196,7 @@ export class PricesApiClient extends BaseApiClient {
       queryKey: ['prices', 'v1FiatExchangeRates'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1ExchangeRatesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           '/v1/exchange-rates/fiat',
           { signal },
         ),
@@ -238,7 +233,7 @@ export class PricesApiClient extends BaseApiClient {
       queryKey: ['prices', 'v1CryptoExchangeRates'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1ExchangeRatesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           '/v1/exchange-rates/crypto',
           { signal },
         ),
@@ -290,7 +285,7 @@ export class PricesApiClient extends BaseApiClient {
           return {};
         }
         return this.fetch<Record<string, CoinGeckoSpotPrice>>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           '/v1/spot-prices',
           {
             signal,
@@ -345,7 +340,7 @@ export class PricesApiClient extends BaseApiClient {
           return { id: '', price: 0 };
         }
         return this.fetch<CoinGeckoSpotPrice>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/spot-prices/${coinId}`,
           {
             signal,
@@ -423,7 +418,7 @@ export class PricesApiClient extends BaseApiClient {
           return {};
         }
         return this.fetch<Record<string, Record<string, number>>>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/chains/${chainIdDecimal}/spot-prices`,
           {
             signal,
@@ -496,7 +491,7 @@ export class PricesApiClient extends BaseApiClient {
         signal,
       }: QueryFunctionContext): Promise<MarketDataDetails> => {
         return this.fetch<MarketDataDetails>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/chains/${chainIdDecimal}/spot-prices/${tokenAddress}`,
           {
             signal,
@@ -580,7 +575,7 @@ export class PricesApiClient extends BaseApiClient {
           return {};
         }
         return this.fetch<Record<string, MarketDataDetails>>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v2/chains/${chainIdDecimal}/spot-prices`,
           {
             signal,
@@ -676,7 +671,7 @@ export class PricesApiClient extends BaseApiClient {
           return {};
         }
         return this.fetch<V3SpotPricesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           '/v3/spot-prices',
           {
             signal,
@@ -753,7 +748,7 @@ export class PricesApiClient extends BaseApiClient {
       queryKey: ['prices', 'v1HistoricalByCoinId', coinId, queryOptions],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1HistoricalPricesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/historical-prices/${coinId}`,
           {
             signal,
@@ -839,7 +834,7 @@ export class PricesApiClient extends BaseApiClient {
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1HistoricalPricesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/chains/${chainIdDecimal}/historical-prices`,
           {
             signal,
@@ -923,7 +918,7 @@ export class PricesApiClient extends BaseApiClient {
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1HistoricalPricesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/chains/${chainIdDecimal}/historical-prices/${tokenAddress}`,
           {
             signal,
@@ -1000,7 +995,7 @@ export class PricesApiClient extends BaseApiClient {
       queryKey: ['prices', 'v3Historical', chainId, assetType, queryOptions],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V3HistoricalPricesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v3/historical-prices/${chainId}/${assetType}`,
           {
             signal,
@@ -1080,7 +1075,7 @@ export class PricesApiClient extends BaseApiClient {
       queryKey: ['prices', 'v1GraphByCoinId', coinId, currency, includeOHLC],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V3HistoricalPricesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/historical-prices-graph/${coinId}`,
           {
             signal,
@@ -1151,7 +1146,7 @@ export class PricesApiClient extends BaseApiClient {
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V3HistoricalPricesResponse>(
-          API_URLS.PRICES,
+          this.apiUrls.PRICES,
           `/v1/chains/${chainIdDecimal}/historical-prices-graph/${tokenAddress}`,
           {
             signal,
diff --git a/packages/core-backend/src/api/shared-types.ts b/packages/core-backend/src/api/shared-types.ts
index 3160eb23eb6..7eb3772e482 100644
--- a/packages/core-backend/src/api/shared-types.ts
+++ b/packages/core-backend/src/api/shared-types.ts
@@ -145,8 +145,17 @@ export type ApiPlatformClientOptions = {
   authTokenTimeout?: number;
   /** Optional custom QueryClient instance */
   queryClient?: QueryClient;
+  /**
+   * Optional overrides for the API base URLs. Any service not specified falls
+   * back to the production URL in {@link API_URLS}. Useful for pointing
+   * clients at dev/local backend environments (e.g. via client env vars).
+   */
+  apiUrls?: Partial<ApiUrls>;
 };
 
+/** Map of API service names to their base URLs. */
+export type ApiUrls = { [Service in keyof typeof API_URLS]: string };
+
 /**
  * Options for API fetch and query methods.
  * Extends TanStack Query options (e.g. select, initialPageParam, retry) so callers
diff --git a/packages/core-backend/src/api/token/client.ts b/packages/core-backend/src/api/token/client.ts
index 520a9602209..1ae30d2eb5e 100644
--- a/packages/core-backend/src/api/token/client.ts
+++ b/packages/core-backend/src/api/token/client.ts
@@ -17,12 +17,7 @@ import type {
   QueryFunctionContext,
 } from '@tanstack/query-core';
 
-import {
-  BaseApiClient,
-  API_URLS,
-  STALE_TIMES,
-  GC_TIMES,
-} from '../base-client.js';
+import { BaseApiClient, STALE_TIMES, GC_TIMES } from '../base-client.js';
 import { getQueryOptionsOverrides } from '../shared-types.js';
 import type { FetchOptions } from '../shared-types.js';
 import type {
@@ -72,7 +67,7 @@ export class TokenApiClient extends BaseApiClient {
     return {
       queryKey: ['token', 'networks'],
       queryFn: ({ signal }: QueryFunctionContext) =>
-        this.fetch<NetworkInfo[]>(API_URLS.TOKEN, '/networks', { signal }),
+        this.fetch<NetworkInfo[]>(this.apiUrls.TOKEN, '/networks', { signal }),
       ...getQueryOptionsOverrides(options),
       staleTime: options?.staleTime ?? STALE_TIMES.SUPPORTED_NETWORKS,
       gcTime: options?.gcTime ?? GC_TIMES.EXTENDED,
@@ -103,7 +98,7 @@ export class TokenApiClient extends BaseApiClient {
     return {
       queryKey: ['token', 'networkByChainId', chainId],
       queryFn: ({ signal }: QueryFunctionContext) =>
-        this.fetch<NetworkInfo>(API_URLS.TOKEN, `/networks/${chainId}`, {
+        this.fetch<NetworkInfo>(this.apiUrls.TOKEN, `/networks/${chainId}`, {
           signal,
         }),
       ...getQueryOptionsOverrides(options),
@@ -167,7 +162,7 @@ export class TokenApiClient extends BaseApiClient {
     return {
       queryKey: ['token', 'tokenList', { chainId, options: queryOptions }],
       queryFn: ({ signal }: QueryFunctionContext) =>
-        this.fetch<TokenMetadata[]>(API_URLS.TOKEN, `/tokens/${chainId}`, {
+        this.fetch<TokenMetadata[]>(this.apiUrls.TOKEN, `/tokens/${chainId}`, {
           signal,
           params: {
             includeTokenFees: queryOptions?.includeTokenFees,
@@ -271,21 +266,25 @@ export class TokenApiClient extends BaseApiClient {
       queryFn: async ({
         signal,
       }: QueryFunctionContext): Promise<TokenMetadata> => {
-        return this.fetch<TokenMetadata>(API_URLS.TOKEN, `/token/${chainId}`, {
-          signal,
-          params: {
-            address: tokenAddress,
-            includeTokenFees: queryOptions?.includeTokenFees,
-            includeAssetType: queryOptions?.includeAssetType,
-            includeAggregators: queryOptions?.includeAggregators,
-            includeERC20Permit: queryOptions?.includeERC20Permit,
-            includeOccurrences: queryOptions?.includeOccurrences,
-            includeStorage: queryOptions?.includeStorage,
-            includeIconUrl: queryOptions?.includeIconUrl,
-            includeAddress: queryOptions?.includeAddress,
-            includeName: queryOptions?.includeName,
+        return this.fetch<TokenMetadata>(
+          this.apiUrls.TOKEN,
+          `/token/${chainId}`,
+          {
+            signal,
+            params: {
+              address: tokenAddress,
+              includeTokenFees: queryOptions?.includeTokenFees,
+              includeAssetType: queryOptions?.includeAssetType,
+              includeAggregators: queryOptions?.includeAggregators,
+              includeERC20Permit: queryOptions?.includeERC20Permit,
+              includeOccurrences: queryOptions?.includeOccurrences,
+              includeStorage: queryOptions?.includeStorage,
+              includeIconUrl: queryOptions?.includeIconUrl,
+              includeAddress: queryOptions?.includeAddress,
+              includeName: queryOptions?.includeName,
+            },
           },
-        });
+        );
       },
       ...getQueryOptionsOverrides(options),
       staleTime: options?.staleTime ?? STALE_TIMES.TOKEN_METADATA,
@@ -360,7 +359,7 @@ export class TokenApiClient extends BaseApiClient {
         signal,
       }: QueryFunctionContext): Promise<V1TokenDescriptionResponse> =>
         this.fetch<V1TokenDescriptionResponse>(
-          API_URLS.TOKEN,
+          this.apiUrls.TOKEN,
           `/token/${chainId}/description`,
           {
             signal,
@@ -434,7 +433,7 @@ export class TokenApiClient extends BaseApiClient {
         { chainIds: [...chainIds].sort(), options: queryOptions },
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
-        this.fetch<TrendingToken[]>(API_URLS.TOKEN, '/v3/tokens/trending', {
+        this.fetch<TrendingToken[]>(this.apiUrls.TOKEN, '/v3/tokens/trending', {
           signal,
           params: {
             chainIds,
@@ -521,19 +520,23 @@ export class TokenApiClient extends BaseApiClient {
         { chainIds: [...chainIds].sort(), options: queryOptions },
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
-        this.fetch<TrendingToken[]>(API_URLS.TOKEN, '/v3/tokens/top-gainers', {
-          signal,
-          params: {
-            chainIds,
-            sort: queryOptions?.sort,
-            blockRegion: queryOptions?.blockRegion,
-            minLiquidity: queryOptions?.minLiquidity,
-            minVolume24hUsd: queryOptions?.minVolume24hUsd,
-            maxVolume24hUsd: queryOptions?.maxVolume24hUsd,
-            minMarketCap: queryOptions?.minMarketCap,
-            maxMarketCap: queryOptions?.maxMarketCap,
+        this.fetch<TrendingToken[]>(
+          this.apiUrls.TOKEN,
+          '/v3/tokens/top-gainers',
+          {
+            signal,
+            params: {
+              chainIds,
+              sort: queryOptions?.sort,
+              blockRegion: queryOptions?.blockRegion,
+              minLiquidity: queryOptions?.minLiquidity,
+              minVolume24hUsd: queryOptions?.minVolume24hUsd,
+              maxVolume24hUsd: queryOptions?.maxVolume24hUsd,
+              minMarketCap: queryOptions?.minMarketCap,
+              maxMarketCap: queryOptions?.maxMarketCap,
+            },
           },
-        }),
+        ),
       ...getQueryOptionsOverrides(options),
       staleTime: options?.staleTime ?? STALE_TIMES.TRENDING,
       gcTime: options?.gcTime ?? GC_TIMES.SHORT,
@@ -606,7 +609,7 @@ export class TokenApiClient extends BaseApiClient {
         { chainIds: [...chainIds].sort(), options: queryOptions },
       ],
       queryFn: ({ signal }: QueryFunctionContext) =>
-        this.fetch<TrendingToken[]>(API_URLS.TOKEN, '/v3/tokens/popular', {
+        this.fetch<TrendingToken[]>(this.apiUrls.TOKEN, '/v3/tokens/popular', {
           signal,
           params: {
             chainIds,
@@ -673,7 +676,7 @@ export class TokenApiClient extends BaseApiClient {
     return {
       queryKey: ['token', 'topAssets', chainId],
       queryFn: ({ signal }: QueryFunctionContext) =>
-        this.fetch<TopAsset[]>(API_URLS.TOKEN, `/topAssets/${chainId}`, {
+        this.fetch<TopAsset[]>(this.apiUrls.TOKEN, `/topAssets/${chainId}`, {
           signal,
         }),
       ...getQueryOptionsOverrides(options),
@@ -715,7 +718,7 @@ export class TokenApiClient extends BaseApiClient {
       queryKey: ['token', 'v1SuggestedOccurrenceFloors'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1SuggestedOccurrenceFloorsResponse>(
-          API_URLS.TOKEN,
+          this.apiUrls.TOKEN,
           '/v1/suggestedOccurrenceFloors',
           { signal },
         ),
diff --git a/packages/core-backend/src/api/tokens/client.ts b/packages/core-backend/src/api/tokens/client.ts
index 37d5d3ea589..c838b9a9bb1 100644
--- a/packages/core-backend/src/api/tokens/client.ts
+++ b/packages/core-backend/src/api/tokens/client.ts
@@ -11,12 +11,7 @@ import type {
   QueryFunctionContext,
 } from '@tanstack/query-core';
 
-import {
-  BaseApiClient,
-  API_URLS,
-  STALE_TIMES,
-  GC_TIMES,
-} from '../base-client.js';
+import { BaseApiClient, STALE_TIMES, GC_TIMES } from '../base-client.js';
 import { getQueryOptionsOverrides } from '../shared-types.js';
 import type { FetchOptions } from '../shared-types.js';
 import type {
@@ -61,7 +56,7 @@ export class TokensApiClient extends BaseApiClient {
       queryKey: ['tokens', 'v1SupportedNetworks'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V1TokenSupportedNetworksResponse>(
-          API_URLS.TOKENS,
+          this.apiUrls.TOKENS,
           '/v1/supportedNetworks',
           { signal },
         ),
@@ -98,7 +93,7 @@ export class TokensApiClient extends BaseApiClient {
       queryKey: ['tokens', 'v2SupportedNetworks'],
       queryFn: ({ signal }: QueryFunctionContext) =>
         this.fetch<V2TokenSupportedNetworksResponse>(
-          API_URLS.TOKENS,
+          this.apiUrls.TOKENS,
           '/v2/supportedNetworks',
           { signal },
         ),
@@ -152,13 +147,17 @@ export class TokensApiClient extends BaseApiClient {
         if (assetIds.length === 0) {
           return [];
         }
-        return this.fetch<V3AssetResponse[]>(API_URLS.TOKENS, '/v3/assets', {
-          signal,
-          params: {
-            assetIds,
-            ...queryOptions,
+        return this.fetch<V3AssetResponse[]>(
+          this.apiUrls.TOKENS,
+          '/v3/assets',
+          {
+            signal,
+            params: {
+              assetIds,
+              ...queryOptions,
+            },
           },
-        });
+        );
       },
       ...getQueryOptionsOverrides(fetchOptions),
       staleTime: fetchOptions?.staleTime ?? STALE_TIMES.TOKEN_METADATA,
diff --git a/packages/core-backend/src/index.ts b/packages/core-backend/src/index.ts
index 98afbedb096..9832e7319c2 100644
--- a/packages/core-backend/src/index.ts
+++ b/packages/core-backend/src/index.ts
@@ -137,6 +137,7 @@ export {
 export type {
   // Client options
   ApiPlatformClientOptions,
+  ApiUrls,
   FetchOptions,
   // Shared types
   PageInfo,