---
title: "Fetch dictionary data using a custom REST data fetcher"
slug: "fetch-dictionary-data-using-a-custom-rest-data-fetcher"
abstract: "Example of how to fetch Sitecore dictionary data with the JSS Dictionary API and custom REST data fetchers."
---
# Fetch dictionary data using a custom REST data fetcher

The `RestDictionaryServiceConfig` type accepts a `dataFetcher` property. You can use this property to pass a custom data fetcher to your instance of the Dictionary Service. By default, the JSS REST Dictionary service uses `axios`.

> [!note]
> This example assumes you create the files in the root directory of the application and that you have a `config.js` file in that same directory. Adjust the import statements as necessary to reflect your project's setup.

To use a REST dictionary service with a custom data fetcher:

1. In a `dictionary-service.ts` file, create an instance of the `RestDictionaryService` class and provide the configuration object:

    ```csharp
    import { AxiosResponse } from 'axios';
    import {
      AxiosDataFetcher,
      RestDictionaryService,
      DictionaryServiceData
    } from '@sitecore-jss/sitecore-jss';
    import config from './config';

    // define your custom data fetcher
    function dataFetcher(url: string, data?: unknown): Promise<AxiosResponse<DictionaryServiceData>> {
      return new AxiosDataFetcher().fetch(url, data);
    }

    export const dictionaryService = new RestDictionaryService({
      apiHost: config.sitecoreApiHost,
      apiKey: config.sitecoreApiKey,
      siteName: config.jssAppName,
      // provide your custom data fetcher to the service instance
      dataFetcher
    });
    ```

2. Import and use the new dictionary service:

    ```csharp
    import { dictionaryService } from './dictionary-service';

    const language = 'en';

    dictionaryService.fetchDictionaryData(language).then(data => {
         // do something with the data
    });
    ```