API

What is an API?

An API, or Application Programming Interface, is a defined way for two systems to talk to each other. It sets the rules for how requests are made, what data can be exchanged, and how responses are formatted. Think of it as a contract between two pieces of software that defines exactly how they will interact.

You interact with APIs every day without realizing it. When a weather app pulls the current forecast, it is using an API to request that data from a weather service. When you log into an app using your Google account, an API is handling that authentication in the background. When an ad network sends cost data to your MMP, that transfer happens through an API.

For mobile marketers, APIs are not just a technical detail. They are the mechanism that makes automated, accurate, and real-time data flow possible across your entire marketing stack.

What Does API Stand For?

API stands for Application Programming Interface. Breaking that down:

Application: Any software program or service

Programming: The set of instructions and logic that defines how the software behaves

Interface: The point of contact between two systems where they interact and exchange information

Together, an API is the interface through which applications are programmed to interact with each other. The term is used broadly across software development, but in mobile marketing it most commonly refers to the connections between ad networks, MMPs, analytics platforms, and data warehouses.

How Do APIs Work?

APIs operate on a request and response model. One system sends a request to another, and the receiving system processes that request and sends back a response. Here is a simplified breakdown of how that works:

A request is made. One application sends a call to another via the API, specifying what data or action it needs.

The request is authenticated. Most APIs require an API key or token to verify that the requesting system has permission to access the data.

The request is processed. The receiving system looks up the requested data or performs the requested action.

A response is returned. The receiving system sends back the data in a structured format, most commonly JSON or XML.

The requesting system uses the data. The application that made the request receives the response and processes it, displaying it, storing it, or passing it on to another system.

This entire exchange typically happens in milliseconds. In mobile marketing, it happens continuously and at scale, with data flowing between ad networks, attribution platforms, and analytics tools around the clock

A familiar real-world example: when you search for flights on a third-party booking site like Kayak or Skyscanner, that site is not storing airline inventory itself. It sends a request to each airline's API in real time, retrieves available flights that match your search, and displays the results. 

A MMP like Tenjin works exactly the same way when it pulls spend data from an ad network. The request goes out, the data comes back, automatically. 

API Integration Meaning

API integration is the process of connecting two or more systems through their APIs so that data flows automatically between them. In mobile marketing, API integrations are what allow your MMP to pull cost data from ad networks, send attribution postbacks to partners, and sync performance metrics to your analytics or BI tools.

Without API integrations, data transfer between platforms would require manual exports, spreadsheet reconciliation, and constant human intervention. With them, data moves automatically, consistently, and in real time.

The quality of an API integration matters. A well-built integration handles errors gracefully, updates data retroactively when needed, and maintains consistency even when one of the connected systems changes its data format. A poorly built one introduces gaps, delays, and discrepancies that compound into significant data quality problems over time.

This is why the number of integrations an MMP supports, and how well those integrations are maintained, is one of the most important factors to consider when evaluating a measurement platform.

How APIs Work in Mobile Marketing

Here are some practical examples of how APIs are used in a typical mobile marketing workflow:

Ad Network Cost APIs

Your MMP connects to each ad network via API to automatically pull cost data. Instead of logging into each network separately and exporting reports, the API handles the data transfer automatically, giving you up-to-date spend figures across all networks in one place.

Attribution Postback APIs

When a user installs your app, your MMP sends an attribution postback to the originating ad network via API. This tells the network that the install happened and which campaign should receive credit, enabling campaign optimization on the network side.

App Store APIs

MMPs connect to the Apple App Store and Google Play via API to pull revenue data, in-app purchase records, and app metadata. This allows revenue figures to be matched against acquisition data for ROAS calculations.

BI Tool Integrations

Data warehouses and BI tools like BigQuery, Tableau, and Looker connect to MMP data via API, enabling teams to pull raw attribution and performance data into their own analytics environments for custom reporting and modeling.

Benefits of APIs in Mobile Marketing

APIs are the foundation of a connected, efficient marketing stack. Here is why they matter:

Automation

APIs eliminate manual data transfers. Cost data, attribution events, and revenue figures all move automatically between systems, reducing the risk of human error and saving significant time across your workflow.

Real-Time Data Access

Because APIs transfer data programmatically and continuously, you have access to up-to-date figures rather than waiting for manual exports or scheduled batch updates.

Scalability

As your campaigns grow across more networks and markets, APIs scale with you. Adding a new network integration does not require building a new manual workflow. It means connecting a new API.

Data Consistency

APIs transfer data in structured, standardized formats. This reduces the discrepancies that arise when data from different sources uses different terminology, metrics, or formatting conventions.

Ecosystem Connectivity

APIs allow you to build a marketing stack where your MMP, ad networks, analytics tools, and data warehouse all work together. Data flows between them rather than sitting in isolated silos that require manual reconciliation.

Developer Efficiency

One of the core reasons APIs exist is to save development time. Because APIs expose pre-built functionality from existing systems, developers do not need to rebuild those features from scratch. They can request data or actions from another system through an established API and focus their time on building what is unique to their product.

APIs and Mobile Measurement

For an MMP, APIs are not just useful, they are fundamental. Every connection between your measurement platform and the ad networks, app stores, and analytics tools in your stack is built on API integrations. This is how attribution data gets matched, cost data gets collected, and postbacks get delivered.

The breadth and quality of an MMP's API integrations directly affects the completeness and accuracy of your data. An MMP with limited integrations means gaps in your cost data. An MMP with poorly maintained integrations means delays and discrepancies that affect every downstream calculation, from CPI to ROAS to LTV.

Tenjin maintains direct API integrations with hundreds of ad networks and partners, with new connections added on a regular basis. This means your cost, attribution, and revenue data stays as complete and current as possible without requiring manual effort on your end.

How Tenjin Uses APIs

Tenjin's platform is built on a network of API integrations that connect your campaigns, attribution data, and revenue metrics into a single, coherent picture.

With Tenjin's API infrastructure, you can:

• Pull cost data automatically from hundreds of ad networks via direct API connections
• Receive and send attribution postbacks across all major networks in real time
• Connect raw attribution and performance data to your own BI tools via DataVault
• Access Tenjin's own API to build custom integrations and automate workflows
• Sync app store revenue data via App Store and Google Play API connections

Tenjin also offers its own APIs: the Tenjin Reporting Metrics API, the Campaign Management API, and our Site Optimization API. These are for teams who want to build custom data pipelines, automate reporting, prevent fraud, and integrate Tenjin data into internal tools. Full documentation is available in the Tenjin Help Center.

Related Terms

• Attribution
• DataVault
• Mobile Measurement Partner (MMP)
• Callbacks
• Raw Data Exporter
• Software Development Kit (SDK)
• SKAdNetwork
• Ad Spend

Frequently Asked Questions

What is an API?

An API, or Application Programming Interface, is a set of rules that allows two software systems to communicate and exchange data with each other. It defines how requests are made, what data can be accessed, and how responses are formatted.

What does API stand for?

API stands for Application Programming Interface. The term refers to the defined protocol through which two applications are programmed to interact and share data.

How do APIs work?

APIs work on a request and response model. One system sends a request to another via the API, the receiving system processes it, and sends back a response in a structured format. This exchange happens automatically and typically in milliseconds.

What is API integration?

API integration is the process of connecting two or more systems through their APIs so that data flows automatically between them. In mobile marketing, this includes connections between ad networks, MMPs, app stores, and analytics tools.

Why are APIs important in mobile marketing?

APIs automate data transfer between marketing platforms, eliminating manual exports and reconciliation. They enable real-time cost data collection, attribution postback delivery, and revenue syncing across the marketing stack, which are all foundational to accurate performance measurement.

Does Tenjin have its own API?

Yes. Tenjin offers a Reporting Metrics API for pulling performance data into external systems and a Campaign Management API for programmatic campaign data management. Tenjin also maintains integrations with hundreds of ad networks and partner APIs to keep your data connected and current.

Do I need to be a developer to use APIs with Tenjin?

Not necessarily. Many of Tenjin's API integrations with ad networks and app stores work automatically in the background once your account is connected. The Reporting Metrics API and Campaign Management API are developer-facing tools for teams that want to access or manage data programmatically, but the core platform is built to be accessible without deep technical expertise.