The Best Interactive Voice APIs - A Comprehensive Guide !

Voice interaction is an activity that has been used in the Android applications, triggered by the user’s voice. Here, the action is performed with voice. For instance, if you want to dial something in an Android, you need to implement it via dial intent by a dialer application. But here you can notice that the intent only preloads the phone number into the dialer - where the user needs to touch a button to initiate the call.Just to have some idea about voice interaction in Android applications is not going to work in the long run. Thus, this article focuses more about voice interaction, its benefits and usages.

Advantages of Voice Interactions

The arrival of voice interaction has changed almost everything in an Android application.

For now, mobiles are no longer only the machine to make and receive calls - with that you now can control most of the things in your daily life such as your car, house, shop, and also can manage a business.

Moreover, we can say that voice call api interaction makes all these operations so much easier and pretty faster.

Let’s see some of the reasons behind that can be considered as advantages:

1. Hand-free - When voice interaction is implemented into a mobile, you can make use of it anytime anywhere that includes, while driving, vacuum cleaning the house, making dinner or even it’s much useful for people with limited hand mobility

2. Fast and quick response - In this fast pace it really irritates people to type a long email and wait for a response instead of just going ahead and making a quick call, as it takes much less time. This is the same with voice control - here, you can cut down on all the clicks by using speech recognition. You can just get your thing done via voice interaction through application.

3. Simple to access - When it comes to voice control, its accessibility is something incredible i.e., anybody can use it without having technical knowledge.

4. Cross-platform and multilingual - This feature works on almost all the devices that include Android, iOS, and web applications. Even all this despite languages.

What exactly is Voice Interaction Commands?

Voice command is an application that is used to call on your contacts, send messages, and make phone calls and also to perform a number of other related tasks. This feature can integrate voice calling API into your mobile application just by clicking on a call button over the application. When it comes to voice interaction, most of the companies integrate Google Assistance actions to their apps such as Trip Advisor, telegram, Flixster, and Walmart, have obtained a lot of advantages over their competitors. Thus, this Google Assistant development is considered a lot by businesses.

Voice commands are used in almost all kinds of apps: fitness, cooking, list-making, healthcare, video streaming, and e-commerce. Sooner this voice control feature can be expected in location-based apps too, mainly to get notified about the direction. Moreover, voice control is one of the most easily accessible features. Thus, if you want to make your app accessible then must implement voice interaction.

Some of the most useful commands that help a lot for voice interaction service Android apps are:
• Get directions
• Find travel plans
• Book a table
• Track a package
• Call or text someone
• Start a video call
• Play music or video
• Set reminders
• Find nearby places

Well, these are some of the things that a user can do with voice commands.

Steps to Integrate voice API in an Android Application

Let’s have a look at the 4 major steps to integrate voice interaction into an Android application.

Step 1 - Before getting started it is essential to know the Android versions and library versions that you are going to have to support your app. Mention about it in your manifest so as to support the voice.

Step 2 - Then set up an intent filter in the manifest to get connected. Thus, can be able to receive the voice intent from it. With this feature, see to it that you must also retain the other older features. Even you can create some more new other intent filters too.

Step 3 - Once done with that now it is time for you to make use of the handle Query(query) method while checking out for voice interaction setup, this is been done to process the search query.

Step 4 - This is the last step where you can add an array of options that can increase most likely more successful responses. Thus, eventually results in integration voice interaction API.

How do Voice chat Interaction API Works?

To create a conversation through voice interaction API you need to follow these:

Retrieve the voice interactor - Must start with retrieving the voice interactor. Well when it comes to voice interactor, it’s an interface for an activity which is used to interact with the user through voice. Here, it moves around and submits the interaction requests to the back-end voice interaction service which is working with the user.

Submit the request to the voice interactor - Once, the request gets submitted, the voice system will process it and simultaneously deliver the result to the request object.

Handling the conversation - Here, the conversation is handled in a way that it will be recorded and data will be stored at the backend.

Handling the call-back - Once the call has not been attended by the agent then automatically will get to the voice recording, and the call request will get generated and later on will be listed and acted as a call-back.

List of the Best Voice Interaction API providers in 2022

Today the real time communication is all about voice calling, chat, and video. But, still there are certain industries that mainly rely on voice interaction APIs.

Let’s have a look at some of the Best Voice Interaction API Providers in the Market:

1. CONTUS MirrorFly Voice API

CONTUS MirrorFly is a real-time communication APIs and SDK with over 150+ chat, video and voice calling features that can be integrated into any existing device including iOS, Android, and web application. It supports businesses to get connected to billions of users allowing them to manage and route the calls quickly. CONTUS MirrorFly is a 100% customizable solution with high-end scalability and security. 

Highlights of MirrorFly Voice API & SDK

• Unlimited calling
• Voice recording
• Push to talk
• Call queuing
• Live audio streaming
• Call routing
• Audio Encryption
• Elastic SIP Trunking
• Text to Speech
• Voice callkit
• Speech recognition

2. Twilio Voice API

Twilio is the messaging API platform for phone services. It enables the businesses to make and receive phone calls, send and receive text messages. It has been programmed so as to be able to integrate various communication methods. 

Highlights of Twilio Voice API & SDK

• Audio call recording
• Text as speech
• Callers together
• Voice High-accuracy Transcription
• VoiceBase PCI Detection and Redaction
• Call Quality Monitoring
• Call Transcription

3. Agora Voice API

Agora is a voice calling SDK that ensures a crystal-clear voice chat for mobile, web, and native apps. Its live conversation feature improves the rate of in-app user engagement and that enhances the fun and personalized remote work. 

Highlights of Agora Voice API

• Clear audio
• Seamless audio calling
• High-quality voice
• Flexibility
• AI-power noise cancellation
• Background and surround sound

4. SendBird Voice API

SendBird is a cloud communication platform connecting companies to their billions of customers across the world. Its SMS, chat, and voice APIs continue to revolve around company-customer interactions, allowing you to connect easily. 

Highlights of SendBird Voice API

• Voice messaging
• Multilingual text-to-speech
• Automated forwarding
• Call recording
• Call transcription
• Answering machine detection

5. Telnyx Voice API 

Telnyx is a next gen communication platform that provides a carrier-grade voice services over the internet. It is uniquely positioned in the CPaas space and controls the end-to-end network to provide core communications functionality, routing, and numbers.

Highlights of Telnyx Voice API

• Conference calls
• Media streaming
• Agent coaching
• Audio playback
• Call recording
• Smart IVR


From the above article, it is clear that the contribution of voice interaction in the communication sector plays an important role. And having them implemented into an Android, iOS or web application can make a big difference in the growth of your business.

Thus, if you are interested you can go ahead and have your voice interaction API built with the market’s best solution providers and see the positive change in your business.

#voiceinteraction #integratevoiceapi #voiceinteractionapi #bestvoiceapi #voicesdk

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The Best Interactive Voice APIs - A Comprehensive Guide !
bindu singh

bindu singh


Procedure To Become An Air Hostess/Cabin Crew

Minimum educational required – 10+2 passed in any stream from a recognized board.

The age limit is 18 to 25 years. It may differ from one airline to another!


Physical and Medical standards –

  • Females must be 157 cm in height and males must be 170 cm in height (for males). This parameter may vary from one airline toward the next.
  • The candidate's body weight should be proportional to his or her height.
  • Candidates with blemish-free skin will have an advantage.
  • Physical fitness is required of the candidate.
  • Eyesight requirements: a minimum of 6/9 vision is required. Many airlines allow applicants to fix their vision to 20/20!
  • There should be no history of mental disease in the candidate's past.
  • The candidate should not have a significant cardiovascular condition.

You can become an air hostess if you meet certain criteria, such as a minimum educational level, an age limit, language ability, and physical characteristics.

As can be seen from the preceding information, a 10+2 pass is the minimal educational need for becoming an air hostess in India. So, if you have a 10+2 certificate from a recognized board, you are qualified to apply for an interview for air hostess positions!

You can still apply for this job if you have a higher qualification (such as a Bachelor's or Master's Degree).

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Top 10 API Security Threats Every API Team Should Know

As more and more data is exposed via APIs either as API-first companies or for the explosion of single page apps/JAMStack, API security can no longer be an afterthought. The hard part about APIs is that it provides direct access to large amounts of data while bypassing browser precautions. Instead of worrying about SQL injection and XSS issues, you should be concerned about the bad actor who was able to paginate through all your customer records and their data.

Typical prevention mechanisms like Captchas and browser fingerprinting won’t work since APIs by design need to handle a very large number of API accesses even by a single customer. So where do you start? The first thing is to put yourself in the shoes of a hacker and then instrument your APIs to detect and block common attacks along with unknown unknowns for zero-day exploits. Some of these are on the OWASP Security API list, but not all.

Insecure pagination and resource limits

Most APIs provide access to resources that are lists of entities such as /users or /widgets. A client such as a browser would typically filter and paginate through this list to limit the number items returned to a client like so:

First Call: GET /items?skip=0&take=10 
Second Call: GET /items?skip=10&take=10

However, if that entity has any PII or other information, then a hacker could scrape that endpoint to get a dump of all entities in your database. This could be most dangerous if those entities accidently exposed PII or other sensitive information, but could also be dangerous in providing competitors or others with adoption and usage stats for your business or provide scammers with a way to get large email lists. See how Venmo data was scraped

A naive protection mechanism would be to check the take count and throw an error if greater than 100 or 1000. The problem with this is two-fold:

  1. For data APIs, legitimate customers may need to fetch and sync a large number of records such as via cron jobs. Artificially small pagination limits can force your API to be very chatty decreasing overall throughput. Max limits are to ensure memory and scalability requirements are met (and prevent certain DDoS attacks), not to guarantee security.
  2. This offers zero protection to a hacker that writes a simple script that sleeps a random delay between repeated accesses.
skip = 0
while True:    response ='' + skip),                      headers={'Authorization': 'Bearer' + ' ' + sys.argv[1]})    print("Fetched 10 items")    sleep(randint(100,1000))    skip += 10

How to secure against pagination attacks

To secure against pagination attacks, you should track how many items of a single resource are accessed within a certain time period for each user or API key rather than just at the request level. By tracking API resource access at the user level, you can block a user or API key once they hit a threshold such as “touched 1,000,000 items in a one hour period”. This is dependent on your API use case and can even be dependent on their subscription with you. Like a Captcha, this can slow down the speed that a hacker can exploit your API, like a Captcha if they have to create a new user account manually to create a new API key.

Insecure API key generation

Most APIs are protected by some sort of API key or JWT (JSON Web Token). This provides a natural way to track and protect your API as API security tools can detect abnormal API behavior and block access to an API key automatically. However, hackers will want to outsmart these mechanisms by generating and using a large pool of API keys from a large number of users just like a web hacker would use a large pool of IP addresses to circumvent DDoS protection.

How to secure against API key pools

The easiest way to secure against these types of attacks is by requiring a human to sign up for your service and generate API keys. Bot traffic can be prevented with things like Captcha and 2-Factor Authentication. Unless there is a legitimate business case, new users who sign up for your service should not have the ability to generate API keys programmatically. Instead, only trusted customers should have the ability to generate API keys programmatically. Go one step further and ensure any anomaly detection for abnormal behavior is done at the user and account level, not just for each API key.

Accidental key exposure

APIs are used in a way that increases the probability credentials are leaked:

  1. APIs are expected to be accessed over indefinite time periods, which increases the probability that a hacker obtains a valid API key that’s not expired. You save that API key in a server environment variable and forget about it. This is a drastic contrast to a user logging into an interactive website where the session expires after a short duration.
  2. The consumer of an API has direct access to the credentials such as when debugging via Postman or CURL. It only takes a single developer to accidently copy/pastes the CURL command containing the API key into a public forum like in GitHub Issues or Stack Overflow.
  3. API keys are usually bearer tokens without requiring any other identifying information. APIs cannot leverage things like one-time use tokens or 2-factor authentication.

If a key is exposed due to user error, one may think you as the API provider has any blame. However, security is all about reducing surface area and risk. Treat your customer data as if it’s your own and help them by adding guards that prevent accidental key exposure.

How to prevent accidental key exposure

The easiest way to prevent key exposure is by leveraging two tokens rather than one. A refresh token is stored as an environment variable and can only be used to generate short lived access tokens. Unlike the refresh token, these short lived tokens can access the resources, but are time limited such as in hours or days.

The customer will store the refresh token with other API keys. Then your SDK will generate access tokens on SDK init or when the last access token expires. If a CURL command gets pasted into a GitHub issue, then a hacker would need to use it within hours reducing the attack vector (unless it was the actual refresh token which is low probability)

Exposure to DDoS attacks

APIs open up entirely new business models where customers can access your API platform programmatically. However, this can make DDoS protection tricky. Most DDoS protection is designed to absorb and reject a large number of requests from bad actors during DDoS attacks but still need to let the good ones through. This requires fingerprinting the HTTP requests to check against what looks like bot traffic. This is much harder for API products as all traffic looks like bot traffic and is not coming from a browser where things like cookies are present.

Stopping DDoS attacks

The magical part about APIs is almost every access requires an API Key. If a request doesn’t have an API key, you can automatically reject it which is lightweight on your servers (Ensure authentication is short circuited very early before later middleware like request JSON parsing). So then how do you handle authenticated requests? The easiest is to leverage rate limit counters for each API key such as to handle X requests per minute and reject those above the threshold with a 429 HTTP response. There are a variety of algorithms to do this such as leaky bucket and fixed window counters.

Incorrect server security

APIs are no different than web servers when it comes to good server hygiene. Data can be leaked due to misconfigured SSL certificate or allowing non-HTTPS traffic. For modern applications, there is very little reason to accept non-HTTPS requests, but a customer could mistakenly issue a non HTTP request from their application or CURL exposing the API key. APIs do not have the protection of a browser so things like HSTS or redirect to HTTPS offer no protection.

How to ensure proper SSL

Test your SSL implementation over at Qualys SSL Test or similar tool. You should also block all non-HTTP requests which can be done within your load balancer. You should also remove any HTTP headers scrub any error messages that leak implementation details. If your API is used only by your own apps or can only be accessed server-side, then review Authoritative guide to Cross-Origin Resource Sharing for REST APIs

Incorrect caching headers

APIs provide access to dynamic data that’s scoped to each API key. Any caching implementation should have the ability to scope to an API key to prevent cross-pollution. Even if you don’t cache anything in your infrastructure, you could expose your customers to security holes. If a customer with a proxy server was using multiple API keys such as one for development and one for production, then they could see cross-pollinated data.

#api management #api security #api best practices #api providers #security analytics #api management policies #api access tokens #api access #api security risks #api access keys

Autumn  Blick

Autumn Blick


Public ASX100 APIs: The Essential List

We’ve conducted some initial research into the public APIs of the ASX100 because we regularly have conversations about what others are doing with their APIs and what best practices look like. Being able to point to good local examples and explain what is happening in Australia is a key part of this conversation.


The method used for this initial research was to obtain a list of the ASX100 (as of 18 September 2020). Then work through each company looking at the following:

  1. Whether the company had a public API: this was found by googling “[company name] API” and “[company name] API developer” and “[company name] developer portal”. Sometimes the company’s website was navigated or searched.
  2. Some data points about the API were noted, such as the URL of the portal/documentation and the method they used to publish the API (portal, documentation, web page).
  3. Observations were recorded that piqued the interest of the researchers (you will find these below).
  4. Other notes were made to support future research.
  5. You will find a summary of the data in the infographic below.


With regards to how the APIs are shared:

#api #api-development #api-analytics #apis #api-integration #api-testing #api-security #api-gateway

Marcelle  Smith

Marcelle Smith


What Are Good Traits That Make Great API Product Managers

As more companies realize the benefits of an API-first mindset and treating their APIs as products, there is a growing need for good API product management practices to make a company’s API strategy a reality. However, API product management is a relatively new field with little established knowledge on what is API product management and what a PM should be doing to ensure their API platform is successful.

Many of the current practices of API product management have carried over from other products and platforms like web and mobile, but API products have their own unique set of challenges due to the way they are marketed and used by customers. While it would be rare for a consumer mobile app to have detailed developer docs and a developer relations team, you’ll find these items common among API product-focused companies. A second unique challenge is that APIs are very developer-centric and many times API PMs are engineers themselves. Yet, this can cause an API or developer program to lose empathy for what their customers actually want if good processes are not in place. Just because you’re an engineer, don’t assume your customers will want the same features and use cases that you want.

This guide lays out what is API product management and some of the things you should be doing to be a good product manager.

#api #analytics #apis #product management #api best practices #api platform #api adoption #product managers #api product #api metrics

An API-First Approach For Designing Restful APIs | Hacker Noon

I’ve been working with Restful APIs for some time now and one thing that I love to do is to talk about APIs.

So, today I will show you how to build an API using the API-First approach and Design First with OpenAPI Specification.

First thing first, if you don’t know what’s an API-First approach means, it would be nice you stop reading this and check the blog post that I wrote to the Farfetchs blog where I explain everything that you need to know to start an API using API-First.

Preparing the ground

Before you get your hands dirty, let’s prepare the ground and understand the use case that will be developed.


If you desire to reproduce the examples that will be shown here, you will need some of those items below.

  • NodeJS
  • OpenAPI Specification
  • Text Editor (I’ll use VSCode)
  • Command Line

Use Case

To keep easy to understand, let’s use the Todo List App, it is a very common concept beyond the software development community.

#api #rest-api #openai #api-first-development #api-design #apis #restful-apis #restful-api