The Yahoo Developer Network offers APIs and tools to make it easy for developers to build, advertise, enhance applications and earn money with Yahoo.



Open source distributed data store for fast, scalable, real-time exploratory analytics on large datasets.

Flurry Analytics

Get the industry's leading mobile app analytics tool - for free.


A modular collection of JavaScript libraries for internationalization that are focused on formatting numbers, dates, and strings.


Yahoo APIs use OAuth protocol for authentication and accessing protected data.

Tumblr In-App Sharing

Easiest way for your users to share content to Tumblr, measure activity, and drive user acquisition on Tumblr.


The YQL platform provides a single endpoint service that enables developers to query, filter, combine, execute and store data across Yahoo and beyond.




Premium search and geo API services allowing you to build innovative applications quickly and efficiently.


Extend your reach by leveraging contacts and relationships by leveraging your users Yahoo address book safely and securely.


Build fun, creative, and gorgeous experiences around photos using Flickr API.

Flurry Pulse

Send your app data to partners of your choice with one SDK.

Hosted Search

Build a Search application with customizations unique to your site and make money with search advertising.


Make your applications location-aware by converting street addresses or place names into geographic coordinates (and vice versa).


Make your applications location-aware by identifying places mentioned in text, disambiguating them and returning unique identifiers (WOEIDs).


Build and launch web-scale search products that utilize the entire search index with the help of Search API.

Social Directory

Social Directory API provides access to users' Yahoo profile and relationships information.


Invent new ways to use Tumblr.


Get up-to-date weather information for your location including 5-day forecast, wind, atmosphere, astronomy conditions, and more.

Yahoo Search in Apps

Keep your users in your app with Yahoo search and monetize those moments.


Commerce Central

A cloud platform for ecommerce. Build ecommerce apps and integrate with many platforms.


Build fantastic games faster, monetize and reach hundreds of millions of Yahoo games users.

Yahoo App Publishing

Earn revenue with native and video ads from Yahoo, Flurry and BrightRoll advertisers.


Gemini API

Manage complex Gemini accounts and campaigns more efficiently with Gemini API.

Yahoo App Marketing

Reach your target audience with the Gemini native and video marketplace.