eBay TypeScript/JavaScript API for Browser and Node

This eBay API implements both Traditional (xml) and the RESTful eBay API. It supports client credentials grant and authorization code grant (Auth'N'Auth, OAuth2 and IAF). Digital Signature is supported too.

eBay Docs

Changelog

v9.1.1 is the latest release.
See here for the full changelog.

Implementation status

RESTful API

Traditional API

Install

npm install ebay-api 
yarn add ebay-api

🚀 Usage & Quick start

NodeJS

import eBayApi from 'ebay-api';
// or:
// const eBayApi = require('ebay-api')

const eBay = new eBayApi({
  appId: '-- also called Client ID --',
  certId: '-- also called Client Secret --',
  sandbox: false
});

const item = await eBay.buy.browse.getItem('v1|254188828753|0');
console.log(JSON.stringify(item, null, 2));

Detailed configuration example

import eBayApi from 'ebay-api';

const eBay = new eBayApi({
  appId: '-- also called Client ID --',
  certId: '-- also called Client Secret --',
  sandbox: false,

  siteId: eBayApi.SiteId.EBAY_US, // required for traditional APIs, see https://developer.ebay.com/DevZone/merchandising/docs/Concepts/SiteIDToGlobalID.html

  marketplaceId: eBayApi.MarketplaceId.EBAY_US, // default. required for RESTful APIs
  acceptLanguage: eBayApi.Locale.en_US, // default
  contentLanguage: eBayApi.Locale.en_US, // default.

  // optional parameters, should be omitted if not used
  devId: '-- devId --', // required for traditional Trading API
  ruName: '-- eBay Redirect URL name --', // 'RuName' (eBay Redirect URL name) required for authorization code grant

  authToken: '--  Auth\'n\'Auth for traditional API (used by trading) --', // can be set to use traditional API without code grant
});

Browser

Check out live example: https://hendt.github.io/ebay-api/. Because of the eBay CORS problems a Proxy server is required to use the API in the Browser.

For testing purpose you can use https://ebay.hendt.workers.dev/ url as proxy. You can also set up your own Proxy server. We have added a example for cloudfront workers: https://github.com/hendt/ebay-api/blob/master/proxy/worker.js

Or use [https://github.com/Rob--W/cors-anywhere](CORS Anywhere is a NodeJS proxy) (works very well with heroku.com).

ESM


<script type="module">
    import eBayApi from 'https://cdn.jsdelivr.net/npm/ebay-api@latest/dist/ebay-api.min.mjs';
    // or 
    import eBayApiEsm from 'https://esm.sh/ebay-api';
</script>

UMD


<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ebay-api@latest/lib/ebay-api.min.js"></script>
<script>
    const eBay = new eBayApi({
        appId: 'appId',
        certId: 'certId',
        sandbox: false
    });

    // eBay.req.instance is AxiosInstance per default
    eBay.req.instance.interceptors.request.use((request) => {
        // Add Proxy
        request.url = 'https://ebay.hendt.workers.dev/' + request.url;
        return request;
    });

    eBay.buy.browse.getItem('v1|254188828753|0').then(item => {
        console.log(JSON.stringify(item, null, 2));
    }).catch(e => {
        console.error(e);
    });
</script>

🔧 eBayApi Config

The first (required) parameter in eBayApi instance takes an object with following properties:

Load config from environment

Use eBayApi.fromEnv() to load data from environment variables.

🐞 Debug

To see node debug logs use DEBUG=ebay:* environment variable.

🔑 Access token types

See the full Documentation here.

Client credentials grant flow mints a new Application access token. Authorization code grant flow mints a new User access token.

User access token (authorization code grant flow)

👉 Recommended for all API Calls.

You must employ a User token to call any interface that accesses or modifies data that is owned by the user (such as user information and account data). To get a User token, the users of your app must grant your application the permissions it needs to act upon their behalf. This process is called user consent. With the user consent flow, each User token contains the set of scopes for which the user has granted their permission (eBay Token Types).

Application access token (client credentials grant flow)

👉 Recommended for API calls that will only request application data (GET method, and it's also restricted).

Application tokens are general-use tokens that give access to interfaces that return application data. For example, many GET requests require only an Application token for authorization. (eBay Token Types)

If no other token is set, this token will be obtained automatically in the process of calling an RESTful API.

Auth'N'Auth

👉 The "old" way. Only works with Traditional API. Checkout the Auth'N'Auth example.

You can also generate the token on eBay developer page and use it directly (see Detailed configuration example).

OAuth2: Exchanging the authorization code for a User access token

eBay Docs

import eBayApi from 'ebay-api';

// 1. Create new eBayApi instance and set the scope.
const eBay = eBayApi.fromEnv();

eBay.OAuth2.setScope([
  'https://api.ebay.com/oauth/api_scope',
  'https://api.ebay.com/oauth/api_scope/sell.fulfillment.readonly',
  'https://api.ebay.com/oauth/api_scope/sell.fulfillment'
]);

// 2. Generate and open Url and Grant Access
const url = eBay.OAuth2.generateAuthUrl();
console.log('Open URL', url);

After you granted success, eBay will redirect you to your 'Auth accepted URL' and add a query parameter code

Express example

This is how it would look like if you use express:

import eBayApi from 'ebay-api';


// This is your RUName endpoint like https://your-ebay.app/success
app.get('/success', async function (req, res) {
  // 3. Get the parameter code that is placed as query parameter in redirected page
  const code = req.query.code; // this is provided from eBay
  const eBay = eBayApi.fromEnv(); // or use new eBayApi()

  try {
    const token = await eBay.OAuth2.getToken(code);
    eBay.OAuth2.setCredentials(token);
    // store this token e.g. to a session
    req.session.token = token

    // 5. Start using the API
    const orders = await eBay.sell.fulfillment.getOrders()
    res.send(orders);
  } catch (error) {
    console.error(error)
    res.sendStatus(400)
  }
});

If token is already in session:

import eBayApi from 'ebay-api';

app.get('/orders/:id', async function (req, res) {
  const id = req.params.id;
  const eBay = eBayApi.fromEnv(); // or use new eBayApi(...)
  const token = req.session.token;
  if (!token) {
    return res.sendStatus(403);
  }

  eBay.OAuth2.setCredentials(token);

  // If token get's refreshed
  eBay.OAuth2.on('refreshAuthToken', (token) => {
    req.session.token = token;
  });

  try {
    // 5. Start using the API
    const order = await eBay.sell.fulfillment.getOrder(id);
    res.send(order);
  } catch (error) {
    console.error(error)
    res.sendStatus(400)
  }
});

Digital Signature

Signatures are required when the call is made for EU- or UK-domiciled sellers, and only for the following APIs/methods:

All methods in the Finances API -> (eBay.finances.XXX.sign.YYY())
issueRefund in the Fulfillment API -> (eBay.sell.fulfillment.sign.issueRefund())
GetAccount in the Trading API -> (eBay.trading.GetAccount(null, { sign: true })))
The following methods in the Post-Order API:
- Issue Inquiry Refund -> (eBay.postOrder.inquiry.sign.issueInquiryRefund())
- Issue case refund -> (eBay.postOrder.inquiry.sign.issueCaseRefund())
- Issue return refund -> (eBay.postOrder.inquiry.sign.issueReturnRefund())
- Process Return Request -> (eBay.postOrder.inquiry.sign.processReturnRequest())
- Create Cancellation Request -> (eBay.postOrder.inquiry.sign.createCancellation())
- Approve Cancellation Request -> (eBay.postOrder.inquiry.sign.approveCancellationRequest())

How to use Digital Signature

// 1. Create singning key and save it appropriatly
const signingKey = await eBay.developer.keyManagement.createSigningKey('ED25519');
// 2. Set the signature
eBay.setSignature(signingKey)
// or in constructor
eBay = new eBayApi({
   appId: '...',
   certId: '...',
   signature: {
      jwe: signingKey.jwe,
      privateKey: signingKey.privateKey
   }
});
// 3. Use the 'sign' keyword in Restful API
const summary = await eBay.sell.finances.sign.getSellerFundsSummary();
// 3. Or the 'sign' parameter in traditional API
const account = await eBay.trading.GetAccount(null, {sign: true});

RESTful API

How to set the Scope

const eBay = new eBayApi({
  // ...
  scope: ['https://api.ebay.com/oauth/api_scope']
});

// Or:
eBay.OAuth2.setScope([
  'https://api.ebay.com/oauth/api_scope',
  'https://api.ebay.com/oauth/api_scope/sell.fulfillment.readonly',
  'https://api.ebay.com/oauth/api_scope/sell.fulfillment'
]);

Use apix.ebay.com or apiz.ebay.com (beta) endpoints

For some APIs, eBay use a apix/apiz subdomain. To use these subdomains you can use .apix/.apiz before the api call like this:

  eBay.buy.browse.apix.getItem() // now it will use https://apix.ebay.com
eBay.buy.browse.apiz.getItem() // now it will use https://apiz.ebay.com

In any case eBay adds a new subdomain, it's also possible to configure whatever you want:

  eBay.buy.browse.api({subdomain: 'apiy'}).getItem() // now it will use https://apiy.ebay.com

Return raw RESTful API response

  eBay.buy.browse.api({
  returnResponse: true, // return the response instead of data
}).getItem();

How to refresh the token

If autoRefreshToken is set to true (default value) the token will be automatically refreshed when eBay response with invalid access token error.

Use Event Emitter to get the token when it gets successfully refreshed.

eBay.OAuth2.on('refreshAuthToken', (token) => {
  console.log(token)
  // Store this token in DB
});

// for client token
eBay.OAuth2.on('refreshClientToken', (token) => {
  console.log(token)
  // Store this token in DB
});

To manual refresh the auth token use eBay.OAuth2.refreshAuthToken() and for the client token use eBay.OAuth2.refreshClientToken(). Keep in mind that you need the 'refresh_token' value set.

const token = await eBay.OAuth2.refreshToken();
// will refresh Auth Token if set, otherwise the client token if set.

Additional request headers

Sometimes you want to add additional headers to the request like a GLOBAL-ID X-EBAY-SOA-GLOBAL-ID. You have multiple options to do this.

RESTful API headers

  const eBay = new eBayApi();

eBay.buy.browse.api({
  headers: {
    'X-EBAY-SOA-GLOBAL-ID': 'EBAY-DE'
  }
}).getItem('v1|382282567190|651094235351').then((item) => {
  console.log(item)
})

Traditional API headers

You can pass headers directly in the method call in the second parameter:

eBay.trading.AddFixedPriceItem({
  Item: {
    Title: 'title',
    Description: {
      __cdata: '<div>test</div>'
    }
  }
}, {
  headers: {
    'X-EBAY-SOA-GLOBAL-ID': 'EBAY-DE'
  }
})

Low level: use the Axios interceptor to manipulate the request

import eBayApi from 'ebay-api';

const eBay = new eBayApi(/* {  your config here } */);

eBay.req.instance.interceptors.request.use((request) => {
  // Add Header
  request.headers['X-EBAY-SOA-GLOBAL-ID'] = 'EBAY-DE';
  return request;
})

Handle JSON GZIP response e.g fetchItemAspects

You need a decompress library installed like zlib.

npm install zlib # or yarn add zlib

import eBayApi from 'ebay-api';
import zlib from 'zlib';

const toString = (data) => new Promise((resolve) => {
  zlib.gunzip(data, (err, output) => {
    if (err) throw err;
    resolve(output.toString());
  });
});

const eBay = new eBayApi(/* {  your config here } */);

try {
  const data = await eBay.commerce.taxonomy.fetchItemAspects(/* categoryTreeId */);
  const result = await toString(data);

  console.log(result)
} catch (error) {
  console.error(error);
}

Handling errors

import eBayApi from 'ebay-api';
import { EBayApiError } from 'ebay-api/lib/errors';

const eBay = new eBayApi(/* {  your config here } */);

try {
  const result = await eBay.trading.GetItem({
    ItemID: 'itemId',
  });
  console.log(result);
} catch (error) {
  if (error instanceof EBayApiError && error.errorCode === 17) {
    // Item not found
  } else {
    throw error;
  }
  
  // in error there is also the field "meta" with the response
  if (error instanceof EBayApiError && error.meta?.res?.status === 404) {
    // not found
    
    // The first error
    console.log(error?.firstError);
  }
  
  
}

The errorCode is extracted from the first error in the API response.

Controlling Traditional XML request and response

The second parameter in the traditional API has the following options:

export type Options = {
  raw?: boolean // return raw XML
  parseOptions?: X2jOptions // https://github.com/NaturalIntelligence/fast-xml-parser
  xmlBuilderOptions?: XmlBuilderOptions // https://github.com/NaturalIntelligence/fast-xml-parser
  useIaf?: boolean // use IAF in header instead of Bearer
  headers?: Headers // additional Headers (key, value)
  hook?: (xml) => BodyHeaders // hook into the request to modify the body and headers
};

Fast XML is used to parse the XML. You can pass the parse option to parseOptions parameter.

Parse JSON Array


eBay.trading.SetNotificationPreferences({
  UserDeliveryPreferenceArray: [{
    NotificationEnable: {
      EventType: 'ItemListed',
      EventEnable: 'Enable',
    }
  }, {
    NotificationEnable: {
      EventType: 'ItemSold',
      EventEnable: 'Enable',
    },
  }],
}, { xmlBuilderOptions: { oneListGroup: true }})

Will produce:

<UserDeliveryPreferenceArray>
  <NotificationEnable>
    <EventType>ItemListed</EventType>
    <EventEnable>Enable</EventEnable>
  </NotificationEnable>
  <NotificationEnable>
    <EventType>ItemSold</EventType>
    <EventEnable>Enable</EventEnable>
  </NotificationEnable>
</UserDeliveryPreferenceArray>

Examples

Trading - AddFixedPriceItem (CDATA)

You can submit your description using CDATA if you want to use HTML or XML.

eBay.trading.AddFixedPriceItem({
  Item: {
    Title: 'title',
    Description: {
      __cdata: '<div>test</div>'
    }
  }
})

Trading - ReviseFixedPriceItem (Update the price of an item)

eBay.trading.ReviseFixedPriceItem({
  Item: {
    ItemID: 'itemId',
    StartPrice: 'startPrice'
  }
})

Buy - getItem

eBay.buy.browse.getItem('v1|382282567190|651094235351').then(a => {
  console.log(a);
}).catch(e => {
  console.log(e)
});

Post-Order - getReturn

eBay.postOrder.return.getReturn('5132021997').then(a => {
  console.log(a);
}).catch(e => {
  console.log(e)
});

Finding - findItemsByProduct (use XML attributes and value)

eBay.finding.findItemsByProduct({
  productId: {
    '@_type': 'ReferenceID',
    '#value': '53039031'
  }
})

// will produce:
// <productId type="ReferenceID">53039031</productId>

Finding - findItemsIneBayStores

eBay.finding.findItemsIneBayStores({
  storeName: 'HENDT'
}, {raw: true}).then(result => {
  // Return raw XML
  console.log(result);
});

Finding - findItemsAdvanced (findItemsByKeywords)

eBay.finding.findItemsAdvanced({
  itemFilter: [{
    name: 'Seller',
    value: 'hendt_de'
  }],
  keywords: 'katze'
}).then(result => {
  console.log(result);
});

Trading - GetMyeBaySelling

eBay.trading.GetMyeBaySelling({
  SoldList: {
    Include: true,
    Pagination: {
      EntriesPerPage: 20,
      PageNumber: 1
    }
  }
}).then(data => {
  console.log(data.results)
});

FAQ

Do I need the eBay OAuth Client dependency?

No. This library has already all authentication implemented and support also auto refreshing token.

What does IAF mean?

IAF stands for IDENTITY ASSERTION FRAMEWORK. The traditional API supports IAF. That means you can use the OAuth2 token with the traditional APIs.

Is it possible to Upload Pictures directly to EPS?

Yes. Checkout the Browser example and Node Example here.

itemAffiliateWebUrl is missing in eBay.buy.browse.search call You have to set endUserCtx.

Contribution

Check here

Supported By

hendt.de rootle.de

📝 License

MIT.

Last updated 3 months ago