nexmo
Nexmo REST API client for Node.js. API support for SMS, Voice Calls, Text-to-Speech, Numbers, Verify (2FA) and more.
Last updated 2 months ago by nexmo-devrel .
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Nexmo Client Library for Node.js

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Nexmo is now known as Vonage

A Node.JS REST API Wrapper library for Nexmo.

For full API documentation refer to developer.nexmo.com.

NPM

Installation | Constructor | Callbacks | Messaging | Message Signing | Voice | Verify | Number Insight | Applications | Management | Redact | Pricing | JWT (JSON Web Token)

Installation

npm install nexmo

Constructor

const Nexmo = require('nexmo');

const nexmo = new Nexmo({
    apiKey: API_KEY,
    apiSecret: API_SECRET,
    applicationId: APP_ID,
    privateKey: PRIVATE_KEY_PATH,
    signatureSecret: SIGNATURE_SECRET,
    signatureMethod: SIGNATURE_METHOD
  }, options);
  • apiKey - API Key from Nexmo. If applicationId and privateKey are present, apiKey is optional.
  • apiSecret - API SECRET from Nexmo. If applicationId and privateKey are present, apiSecret is optional.
  • applicationId - (optional) The Nexmo Application ID to be used when creating JWTs.
  • privateKey - (optional) The Private Key to be used when creating JWTs. You can specify the key as any of the following:
    • A Buffer containing the file contents.
    • A String containing the path to the key file on disk.
  • signatureSecret - (optional) API singature secret from Nexmo, used for signing SMS message requests
  • signatureMethod - (optional) singature method matching the one you gave Nexmo, used for signing SMS message requests. Must be one of "md5hash", "md5", "sha1", "sha256", or "sha512"
  • options - (optional) Additional options for the constructor.

Options are:

{
  // If true, log information to the console
  debug: true|false,
  // append info the the User-Agent sent to Nexmo
  // e.g. pass 'my-app' for /nexmo-node/1.0.0/4.2.7/my-app
  appendToUserAgent: string,
  // Set a custom logger
  logger: {
    log: function() {level, args...}
    info: function() {args...},
    warn: function() {args...}
  },
  // Set a custom timeout for requests to Nexmo in milliseconds. Defaults to the standard for Node http requests, which is 120,000 ms.
  timeout: integer,
  // Set a custom host for requests instead of api.nexmo.com
  apiHost: string,
  // Set a custom host for requests instead of rest.nexmo.com
  restHost: string
}

Callbacks

All methods expect a callback function to be passed in, with a method signature of (error, response) where:

  • error - is an Error object if the API call returns an error, or null if the API call was successful.
  • response - is an Object, with the API response if the API call was successful, or null if there was an error.

Example:

callback = (error, response) => {
  if (error) {
    console.error(error)
  }

  if (response) {
    console.log(response)
  }
}

Messaging

Send a text message

nexmo.message.sendSms(sender, recipient, message, options, callback);

Send a Binary Message

nexmo.message.sendBinaryMessage(fromnumber, tonumber, body, udh, callback);
  • body - Hex encoded binary data
  • udh - Hex encoded udh

Send a WAP Push Message

nexmo.message.sendWapPushMessage(fromnumber, tonumber, title, url, validity, callback);
  • validity - is optional (if given should be in milliseconds)

Send a Short Code alert

nexmo.message.shortcodeAlert(recipient, messageParams, opts, callback);

Voice

For detailed information please see the documentation at https://developer.nexmo.com/api/voice

Make a call

Requires applicationId and privateKey to be set on the constructor.

nexmo.calls.create({
  to: [{
    type: 'phone',
    number: TO_NUMBER
  }],
  from: {
    type: 'phone',
    number: FROM_NUMBER
  },
  answer_url: [ANSWER_URL]
}, callback);

For more information see https://developer.nexmo.com/api/voice#createCall

Get a Call

nexmo.calls.get(callId, callback);

For more information see https://developer.nexmo.com/api/voice#getCall

Query Calls

nexmo.calls.get({status: 'completed'}, callback);

The first parameter can contain many properties to filter the returned call or to page results. For more information see the Calls API Reference.

Update a Call

nexmo.calls.update(callId, { action: 'hangup' }, callback);

For more information see https://developer.nexmo.com/api/voice#updateCall

Stream an Audio File to a Call

nexmo.calls.stream.start(
  callId,
  {
    stream_url: [
      'https://nexmo-community.github.io/ncco-examples/assets/voice_api_audio_streaming.mp3'
    ],
    loop: 1
  });

For more information see https://developer.nexmo.com/api/voice#startStream

Stop an audio stream in a call

nexmo.calls.stream.stop(callId);

For more information see https://developer.nexmo.com/api/voice#stopStream

Play synthesized text in a call

nexmo.calls.talk.start(
  callId,
  {
    text: 'No songs detected',
    voiceName: 'Emma',
    loop: 1
  }
);

For more information see https://developer.nexmo.com/api/voice#startTalk

Stop synthesized text in a call

nexmo.calls.talk.stop(callId);

For more information see https://developer.nexmo.com/api/voice#stopTalk

Send DTMF to a Call

nexmo.calls.dtmf.send(callId, params, callback);

For more information see https://developer.nexmo.com/api/voice#startDTMF

Files

For detailed information please see the documentation at https://developer.nexmo.com/voice/voice-api/guides/recording

Get a file (recording)

nexmo.files.get(fileIdOrUrl, callback);

Save a file (recording)

nexmo.files.save(fileIdOrUrl, file, callback);

Verify

Submit a Verification Request

nexmo.verify.request({number:<NUMBER_TO_BE_VERIFIED>,brand:<NAME_OF_THE_APP>},callback);

For more information check the documentation at https://developer.nexmo.com/api/verify#verify-request

Submit a PSD2 (Payment Services Directive 2) Verification Request

nexmo.verify.psd2({number:<NUMBER_TO_BE_VERIFIED>,payee:<NAME_OF_THE_SELLER>,amount:<AMOUNT_IN_EUROS>},callback);

For more information check the documentation at https://developer.nexmo.com/api/verify#verifyRequestWithPSD2

Validate the response of a Verification Request

nexmo.verify.check({request_id:<UNIQUE_ID_FROM_VERIFICATION_REQUEST>,code:<CODE_TO_CHECK>},callback);

For more information check the documentation at https://developer.nexmo.com/api/verify#verify-check

Search one or more Verification Request

nexmo.verify.search(<ONE_REQUEST_ID or ARRAY_OF_REQUEST_ID>,callback);

For more information check the documentation at https://developer.nexmo.com/api/verify#verify-search

Cancel verification

nexmo.verify.control({request_id:<UNIQUE_ID_FROM_VERIFICATION_REQUEST>,cmd:'cancel'},callback);

For more information check the documentation at https://developer.nexmo.com/api/verify#verify-control

Trigger next verification event

nexmo.verify.control({request_id:<UNIQUE_ID_FROM_VERIFICATION_REQUEST>,cmd:'trigger_next_event'},callback);

For more information check the documentation at https://developer.nexmo.com/api/verify#verify-control

Number Insight

Basic

nexmo.numberInsight.get({level: 'basic', number: NUMBER}, callback);

For more information check the documentation at https://developer.nexmo.com/number-insight/building-blocks/number-insight-basic/node

Example:

nexmo.numberInsight.get({level: 'basic', number: '1-234-567-8900'},  callback);

Standard

nexmo.numberInsight.get({level: 'standard', number: NUMBER}, callback);

For more information check the documentation at https://developer.nexmo.com/number-insight/building-blocks/number-insight-standard/node

Example:

nexmo.numberInsight.get({level: 'standard', number: '1-234-567-8900'}, callback);

Advanced

nexmo.numberInsight.get({level: 'advancedSync', number: NUMBER}, callback);

For more information check the documentation at https://developer.nexmo.com/number-insight/building-blocks/number-insight-advanced/node

Advanced Async

Number Insight Advanced might take a few seconds to return a result, therefore the option exists to process the result asynchronously through a webhook.

nexmo.numberInsight.get({level: 'advancedAsync', number: NUMBER, callback: "http://example.com"}, callback);

In this case, the result of your insight request is posted to the callback URL as a webhook. For more details on webhooks see the Number Insight Advanced documentation.

Applications

For an overview of applications see https://developer.nexmo.com/concepts/guides/applications

Create an App

nexmo.applications.create(params, callback);

For more information see https://developer.nexmo.com/api/application.v2#createApplication

params can be

{
"name": "My Application",
  "capabilities": {
    "voice": {
      "webhooks": {
        "answer_url": {
          "address": "https://example.com/webhooks/answer",
          "http_method": "POST"
        },
        "event_url": {
          "address": "https://example.com/webhooks/event",
          "http_method": "POST"
        }
      }
    },
    "messages": {
      "webhooks": {
        "inbound_url": {
          "address": "https://example.com/webhooks/inbound",
          "http_method": "POST"
        },
        "status_url": {
          "address": "https://example.com/webhooks/status",
          "http_method": "POST"
        }
      }
    },
    "rtc": {
      "webhooks": {
        "event_url": {
          "address": "https://example.com/webhooks/event",
          "http_method": "POST"
        }
      }
    },
    "vbc": {}
  }
}

Get a single App

nexmo.applications.get(appId, callback, v2flag);

For more information see https://developer.nexmo.com/api/application.v2#getApplication

  • v2flag - if true, you'll receive the V2 API response, else you'll receive a V1 style response from the V2 API

Get Apps by a filter

nexmo.applications.get(options, callback, v2flag);

For more information see https://developer.nexmo.com/api/application.v2#listApplication

  • options - filter options, use {} to get all your applications
  • v2flag - if true, you'll receive the V2 API response, else you'll receive a V1 style response from the V2 API

Update an App

nexmo.applications.update(appId, params, callback);

For more information see https://developer.nexmo.com/api/application.v2#updateApplication

Delete an App

nexmo.application.delete(appId, callback);

For more information see https://developer.nexmo.com/api/application.v2#deleteApplication

Management

Check Account Balance

nexmo.account.checkBalance(callback);

List Account Secrets

nexmo.account.listSecrets(apiKey, callback);

Get Account Secret

nexmo.account.getSecret(apiKey, secretId, callback);

Create Account Secret

nexmo.account.createSecret(apiKey, secret, callback);

Delete Account Secret

nexmo.account.deleteSecret(apiKey, secretId, callback);

Get Pricing for sending a message to a country.

nexmo.number.getPricing(countryCode, callback);
  • countryCode - 2 letter ISO Country Code

Get Pricing for sending a message or making a call to a number.

nexmo.number.getPhonePricing(product, msisdn, callback);
  • product - either voice or sms
  • msisdn - Mobile Station International Subscriber Directory Number (MSISDN) is a number used to identify a mobile phone number internationally. i.e. 447700900000

Get all numbers associated with the account.

nexmo.number.get(options, callback);
  • options parameter is an optional Dictionary Object containing any of the following parameters
    • pattern
    • search_pattern
    • index
    • size
    • has_application
    • application_id

For more details about these options, refer to the Numbers API reference

Example:

nexmo.number.get({pattern:714,index:1,size:50,search_pattern:2}, callback);

Search for MSISDN's available to purchase

nexmo.number.search(countryCode,options,callback);

options parameter is optional. They can be one of the following :

  1. number pattern to match the search (eg. 1408)
  2. Dictionary Object optionally containing the following parameters :
  • pattern
  • search_pattern
  • type
  • features
  • index
  • size

For more details about these options, refer to the Numbers API reference

Example:

nexmo.number.search('US',{pattern:3049,index:1,size:50,type:'mobile-lvn',features:'VOICE',search_pattern:2}, callback);

Purchase Number

nexmo.number.buy(countryCode, msisdn, callback);

// optional target_api_key option
nexmo.number.buy(countryCode, msisdn, target_api_key, callback);

For more details on these parameters, see the Numbers API reference.

Cancel Number

nexmo.number.cancel(countryCode, msisdn, callback);

// optional target_api_key option
nexmo.number.cancel(countryCode, msisdn, target_api_key, callback);

For more details on these parameters, see the Numbers API reference.

Update Number

nexmo.number.update(countryCode, msisdn, params, callback);

params is a dictionary of parameters as described in the Numbers API reference.

Update Password (API Secret)

nexmo.account.updatePassword(<NEW_PASSWORD>,callback);

Update Callback URL associated to the account

nexmo.account.updateSMSCallback(<NEW_CALLBACK_URL>,callback);

Change Delivery Receipt URL associated to the account

nexmo.account.updateDeliveryReceiptCallback(<NEW_DR_CALLBACK_URL>,callback);

Redact

Redact a specific ID

nexmo.redact.transaction(id, type, callback);

Pricing

type is the type of service you wish to retrieve pricing for: either sms, sms-transit or voice.

Get pricing for a specific country

nexmo.pricing.get(type, country_code, callback);

Get pricing for all countries

nexmo.pricing.getFull(type, callback);

Get pricing for a specific dialing prefix

nexmo.pricing.getPrefix(type, country_prefix, callback);

Get pricing for a specific phone number

nexmo.pricing.getPhone(type, phone, callback);

Media

Upload a file

nexmo.media.upload({"file": "/path/to/file"}, callback);

Upload from a URL

nexmo.media.upload({"url": "https://example.com/ncco.json"}, callback);

Search existing media

// See https://ea.developer.nexmo.com/api/media#search-media-files
// for possible search parameters
nexmo.media.search({ page_size: 1, page_index: 1 }, callback);

Download media

nexmo.media.download(id, callback);

Delete media

nexmo.media.delete(id, callback);

Update media

nexmo.media.update(id, body, callback);

Get media details

nexmo.media.get(id, callback);

JWT

There are two ways of generating a JWT. You can use the function that exists on the Nexmo definition:

const Nexmo = require('nexmo');

const jwt = Nexmo.generateJwt('path/to/private.key', {application_id: APP_ID});

Or via a Nexmo instance where your supplied applicationId and privateKey credentials will be used:

const Nexmo = require('nexmo');

const nexmo = new Nexmo({
    apiKey: API_KEY,
    apiSecret: API_SECRET,
    applicationId: APP_ID,
    privateKey: PRIVATE_KEY_PATH,
  });

const jwt = nexmo.generateJwt();

Signature

There are two ways of generating a signature hash. Both strip the sig parameter if supplied. You can use the function that exists on the Nexmo definition:

const Nexmo = require('nexmo');

const hash = Nexmo.generateSignature(SIGNATURE_METHOD, SIGNATURE_SECRET, params);

Or via a Nexmo instance where your supplied signatureSecret and signatureMethod:

const Nexmo = require('nexmo');

const nexmo = new Nexmo({
    apiKey: API_KEY,
    apiSecret: API_SECRET,
    signatureSecret: SIGNATURE_SECRET,
    signatureMethod: SIGNATURE_METHOD,
  });

const hash = nexmo.generateSignature();

SIGNATURE_METHOD is the signature method matching the one you gave Nexmo. Must be one of "md5hash", "md5", "sha1", "sha256", or "sha512".

Voice (Deprecated)

Send TTS Message

nexmo.voice.sendTTSMessage(<TO_NUMBER>,message,options,callback);

Send TTS Prompt With Capture

nexmo.sendTTSPromptWithCapture(<TO_NUMBER>,message,<MAX_DIGITS>, <BYE_TEXT>,options,callback);

Send TTS Prompt With Confirm

nexmo.voice.sendTTSPromptWithConfirm(<TO_NUMBER>, message ,<MAX_DIGITS>,'<PIN_CODE>',<BYE_TEXT>,<FAILED_TEXT>,options,callback);

Testing

Run:

npm test

Or to continually watch and run tests as you change the code:

npm run-script test-watch

Examples

See examples/README.md.

Also, see the Nexmo Node Quickstarts repo.

Creating your own requests

IMPORTANT

This section uses internal APIs and should not be relied on. We make no guarantees that the interface is stable. Relying on these methods is not recommended for production applications

For endpoints that are not yet implemented, you can use the Nexmo HTTP Client to make requests with the correct authentication method.

In these examples, we assume that you've created a nexmo instance as follows:

const nexmo = new Nexmo({
    apiKey: 'API_KEY',
    apiSecret: 'API_SECRET',
    applicationId: 'APPLICATION_ID',
    privateKey: './private.key',
});
  • If your API endpoint is on api.nexmo.com, use the nexmo.options.api object.
  • If your API endpoint is on rest.nexmo.com, use the nexmo.options.rest object.

Both of these objects expose the following methods:

  • get(path, params, callback, useJwt) (params is the query string to use)
  • post(path, params, callback, useJwt) (params is the POST body to send)
  • postUseQueryString(path, params, callback, useJwt) (params is the query string to use)
  • delete(path, callback, useJwt)

To make a request to api.nexmo.com/v1/calls?status=rejected:

nexmo.options.api.get(
    "/v1/calls",
    {"status": "rejected"},
    function(err, data){
        console.log(err);
        console.log(data);
    },
    true // Use JWT for authentication
);

To make a request to rest.nexmo.com/sms/json?from=Demo&to=447700900000&text=Testing:

nexmo.options.rest.postUseQueryString(
    "/sms/json",
    {"from": "Demo", "to": "447700900000", "text": "Testing"},
    function(err, data){
        console.log(err);
        console.log(data);
    },
    false // Don't use JWT, fall back to API key/secret
);

API Coverage

  • Voice
    • [x] Outbound Calls
    • [ ] Inbound Call Webhook
    • [x] Update Calls
    • [x] Stream to Call
    • [x] Talk to Call
    • [x] DTMF to Call
  • Messaging
    • [x] Send
    • [ ] Delivery Receipt Webhook
    • [ ] Inbound Message Webhook
    • [x] Search
      • [x] Message
      • [x] Messages
      • [x] Rejections
    • [x] US Short Codes
      • [x] Two-Factor Authentication
      • [x] Event-Based Alerts
        • [x] Sending Alerts
        • [x] Campaign Subscription Management
  • Number Insight
    • [X] Basic
    • [X] Standard
    • [X] Advanced
    • [X] Advanced Async
    • [ ] Advanced Async Webhook
  • Verify
    • [x] Verify
    • [x] PSD2
    • [x] Check
    • [x] Search
    • [x] Control
  • Applications
    • [x] Create an Application
    • [x] Get Applications
    • [x] Update an Application
    • [x] Delete an Application
  • Account
    • [X] Balance
    • [x] Pricing
    • [x] Settings
    • [x] Top Up
    • [x] Numbers
      • [x] Search
      • [x] Buy
      • [x] Cancel
      • [x] Update
  • Media
    • [x] Upload
    • [x] Download
    • [x] Search
    • [x] Get
    • [x] Update
    • [x] Delete
  • Voice (Deprecated)
    • [x] Outbound Calls
    • [ ] Inbound Call Webhook
    • [x] Text-To-Speech Call
    • [x] Text-To-Speech Prompt
  • Redact
    • [x] Transaction

License

MIT - see LICENSE

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