Expression Recognition API

Expression Recognition API

"Empower your applications with our Expression Recognition API uncover emotions, assess opinions, and analyze attitudes for enhanced decision-making and user engagement."

API description

About the API:  

In today's dynamic digital landscape, the Expression Recognition API is a critical tool that provides deep insight into the intricate world of human emotions conveyed through textual data. In essence, sentiment analysis, also known as opinion mining, is the computational examination of the emotional tone contained in text. With an arsenal of advanced natural language processing algorithms and machine learning models, this API goes beyond mere polarity detection and provides nuanced analyses that capture the subtleties of expressed emotions.

Applications of the Expression Recognition API span a variety of industries and enable organizations to decipher customer sentiments, gauge market trends and make data-driven decisions. In business and marketing, the API becomes an indispensable asset, enabling users to evaluate the effectiveness of marketing campaigns, understand customer opinions and make informed decisions to improve brand perception.

In customer service, real-time tracking of customer feedback becomes feasible, giving organizations the ability to quickly address concerns, identify areas for improvement, and thereby elevate overall customer satisfaction. Product development strategies also benefit from the API, which can analyze user feedback and comments and target improvements based on identified strengths and weaknesses.

The integration of the Expression Recognition API brings a host of benefits. Organizations gain the ability to make data-driven decisions based on a deep understanding of customer and market sentiment. Customer experiences are enhanced through proactive responses to feedback, which contributes to improved satisfaction and loyalty. Brand reputation management becomes an effective and dynamic process, enabling companies to respond promptly to both positive and negative sentiment.

Designed to integrate seamlessly into a variety of applications and platforms, the Expression Recognition API provides organizations with an easy-to-use solution. Supported by comprehensive documentation and robust customer support, the API enables companies in all industries to harness the transformative power of human emotions in textual data. It thus becomes an invaluable tool for navigating the sentiment-driven landscape of the digital age that fosters success and resilience in an ever-evolving marketplace.

What this API receives and what your API provides (input/output)?

It will receive parameters and provide you with a JSON.


What are the most common uses cases of this API?

  1. Customer Feedback Analysis: Utilize the Expression Recognition API to analyze customer reviews, comments, and feedback to understand overall satisfaction levels and identify areas for improvement.

    Social Media Monitoring: Monitor social media platforms for mentions of your brand or product and gauge public sentiment to adapt marketing strategies accordingly.

    Market Research: Conduct sentiment analysis on market trends and consumer opinions to gain insights into industry perceptions and make informed business decisions.

    Brand Monitoring: Track sentiment around your brand in real-time to assess the impact of marketing campaigns, product launches, or any events affecting brand perception.

    Employee Engagement: Analyze employee feedback and sentiment to gauge overall job satisfaction, identify potential areas for improvement, and enhance the workplace environment.

Are there any limitations to your plans?

  • Free Plan: 3 API Calls.

  • Basic Plan: 3,000 API Calls. 100 requests per day.

  • Pro Plan: 6,000 API Calls. 200 requests per day.

  • Pro Plus Plan: 12,000 API Calls. 400 requests per day.

  • Premium Plan: 24,000 API Calls. 800 requests per day.

API Documentation


To use this endpoint you must enter a text to obtain a sentiment analysis.


Sentiment analysis - Endpoint Features
Object Description
Request Body [Required] Json
Test Endpoint



Sentiment analysis - CODE SNIPPETS

curl --location --request POST '' --header 'Authorization: Bearer YOUR_API_KEY' 


API Access Key & Authentication

After signing up, every developer is assigned a personal API access key, a unique combination of letters and digits provided to access to our API endpoint. To authenticate with the Expression Recognition API REST API, simply include your bearer token in the Authorization header.


Header Description
Authorization [Required] Should be Bearer access_key. See "Your API Access Key" above when you are subscribed.

Simple Transparent Pricing

No long term commitments. One click upgrade/downgrade or cancellation. No questions asked.

🚀 Enterprise
Starts at $10,000/Year

  • Custom Volume
  • Dedicated account manager
  • Service-level agreement (SLA)

Customer favorite features

  • ✔︎ Only Pay for Successful Requests
  • ✔︎ Free 7-Day Trial
  • ✔︎ Multi-Language Support
  • ✔︎ One API Key, All APIs.
  • ✔︎ Intuitive Dashboard
  • ✔︎ Comprehensive Error Handling
  • ✔︎ Developer-Friendly Docs
  • ✔︎ Postman Integration
  • ✔︎ Secure HTTPS Connections
  • ✔︎ Reliable Uptime

To use this API the user must indicate a text to obtain a sentiment analysis of the text.

There are different plans suits everyone including a free plan for small amount of requests per day, but it’s rate is limit to prevent abuse of the service.

Sure, you can use it and pay only when you use it. The credit can’t be expired.

Zyla provides a wide range of integration methods for almost all programming languages. You can use these codes to integrate with your project as you need.

The Expression Recognition API is an advanced tool designed to analyze and interpret facial expressions in images or videos. It employs sophisticated algorithms to detect and identify a range of emotions conveyed through facial features.

Zyla API Hub is, in other words, an API MarketPlace. An all-in-one solution for your developing needs. You will be accessing our extended list of APIs with only your user. Also, you won't need to worry about storing API keys, only one API key for all our products is needed.

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Prices are based on a recurring monthly subscription depending on the plan selected — plus overage fees applied when a developer exceeds a plan’s quota limits. In this example, you'll see the base plan amount as well as a quota limit of API requests. Be sure to notice the overage fee because you will be charged for each additional request.

Zyla API Hub works on a recurring monthly subscription system. Your billing cycle will start the day you purchase one of the paid plans, and it will renew the same day of the next month. So be aware to cancel your subscription beforehand if you want to avoid future charges.

Just go to the pricing page of that API and select the plan that you want to upgrade to. You will only be charged the full amount of that plan, but you will be enjoying the features that the plan offers right away.

Yes, absolutely. If you want to cancel your plan, simply go to your account and cancel on the Billing page. Upgrades, downgrades, and cancellations are immediate.

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