API Offerings

Unlock value for your customers with the most precise website identity resolution API built right into your app

Seamlessly identify anonymous visitors and enrich your customer data with the best visitor identification data on the market.

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Integrating with Customers.ai was a breeze, and the data accuracy has been incredible. It’s added huge value to our existing 5,000 customers. We initially considered building it ourselves, but quickly realized it would have taken an entire engineering team and years of work. With Customers.ai, we were up and running in just two weeks!

Undisclosed ecommerce software vendor in Shopify ecosystem

Poor data quality from other identity resolution providers is sabotaging your app’s success

Meet the worst-kept secret in the identity resolution space – bad data.

In testing by U.S. ecommerce brands, popular identity resolution vendors showed 5-30% accuracy rates.

That data you are paying for? Almost entirely incorrect, reflecting poorly on any app that OEMs that data and causing customer churn.

Customers.ai was shown to have a 65-85% data accuracy rate, ensuring your customers are getting the right contact information, as well as a 2-18x higher True Match Rate!

See what people are saying about competitor solutions

What can you do with the Customers.ai API?

Integrating an identity layer into your tool is a must to enable personalization, marketing/sales outreach, and re-identification of existing customers.

Website Personalization

CDPs and personalization already work on “logged in” users. That’s only a small percentage of your traffic. The Customers.ai API extends that to non-customers and anonymous visitors you can’t identify.

Marketing & Sales Outreach

If you’re a landing page technology or a website pop-up solution capturing first-party data, Customers.ai can help you re-identify those existing customers that might get missed.

Restore Remarketing

Restore website remarketing use cases and enable new ad analytics use cases with enriched anonymous visitor data.

How Customers.ai Guarantees Data Accuracy and Trust

To help you feel confident in our data, we analyze our data quality using your customer websites as the testing ground.

Here’s our testing methodology:

Track Form Fill Data

We’ll help set up a test where we track form submissions on your customer websites, enabling us to establish a baseline of truth.

Compare Identity Guesses

Using data from Customers.AI (and optionally other competing providers), we’ll compare the “guesses” to the established true identities to evaluate their accuracy.

Transparency

Our approach ensures a transparent evaluation of our product’s data accuracy and gives you confidence that we’re the best company to partner with.

Consumer & B2B Data Enrichment API

What makes the Customers.ai API so powerful is it goes beyond basic visitor identification.

Our consumer data network allows us to enrich and append data on contacts we provide or enrich the contacts you are hosting on behalf of your companies. This data includes business and employment information and is updated monthly.

Name, email, or phone can be used to query the database to retrieve a match with the additional fields.

Customers.ai is the only visitor ID solution with a true API endpoint

Other ID resolution applications are monolithic desktop apps that provide the ability to send data via a webhook. 

Our API lets developers programmatically manage accounts and sub-accounts, monitor utilization, and more — with full flexibility and control.

100% privacy law compliant technology

We safely and securely encrypt visitor data before sending to any platforms, ensuring data is safe and eliminating any privacy issues.

Powering Fast-Growing Ecommerce Brands

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and learn more about our API

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Turn Anonymous Shoppers into Customers with Unmatched Website Visitor ID Accuracy

Most visitor ID solutions get identities right 5-30% of the time. Customers.ai is 2-7x more accurate with 2-18x higher True Match Rate. See the difference on your site firsthand.

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Convert more visitors into customers

Turn anonymous traffic into actionable audiences for your email, ads and direct mail campaigns.

See what accurate Website Visitor ID reveals on your site!

No credit card required.

May 2025 Update: New Brand Insights on the Impact of Data Inaccuracy

Testing by DTC brands revealed a crisis of Website Visitor Identification inaccuracy. Read the newly updated report to understand the damage to brands’ deliverability and performance — and what you can do about it. See the report →

GROW YOUR RETAINERS, DIVERSIFY REVENUE SOURCES, AND MAKE CLIENTS HAPPIER WITH CUSTOMERS.AI FOR AGENCIES.

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