Google opens public preview for Connected Apps in Search and Gemini

The new Connected Apps Platform

Google has officially opened a public preview for its Connected Apps Platform. This initiative allows developers to submit their applications for integration into the AI Mode of both Google Search and the Gemini app. The goal is to enable the AI to interact with external tools to complete complex user requests.

Previously, Google had not specified the exact process for how an application would be selected for this group. With the launch of the public preview, Google has released developer documentation that outlines the specific path for submission. This includes a formal written policy that governs how apps can interact with the AI models.

As searchenginejournal.com reported, the platform is designed to let the AI recognize when it needs to delegate a task to a specific server. This means the AI acts as a coordinator, sending information to an app to perform a specific action on behalf of the user.

How developers connect to Google

Developers can link their applications to the platform using two primary methods. One option is a remote MCP server, which uses the Model Context Protocol. This is an open-standard communication protocol that allows AI models to work in conjunction with external tools.

The second option is through AppFunctions, which Google refers to as Android MCP. While the MCP server route provides access to Gemini and Search users across the web, Android, and iOS, the Android MCP route is specifically for users on Android devices. Developers must register through the Google Connected Console to begin the process.

During registration, developers must select a category for each application, which sets the minimum capabilities the app must have. They are also required to identify at least three specific capabilities that will be displayed to users. These choices are permanent and cannot be altered once the registration is complete.

Review and selection policies

Google will review and test every application before it is allowed to be published on the platform. For apps that require a user login, developers must provide Google with test accounts and sample data. Google has stated that any application it cannot fully test may be rejected from the platform.

The platform includes strict rules to ensure the AI makes fair choices between different apps. For example, an app is not allowed to reference other tools or create rules for when other tools should be used. It also cannot use deceptive descriptions to influence the model into selecting it over a competitor.

If a developer violates these policies, Google has the authority to take several actions. These include rejecting the app, suspending access, removing the app from the platform entirely, or terminating the developer's account. The system is designed to prevent apps from using overly broad claims to trick the AI into performing adverse actions.

User experience and availability

From a user perspective, the AI Mode may default to the last app used to complete a specific task. However, users still maintain control by specifying a different app to be included with their request. If a user submits a general search query, they can also choose from a list of available applications.

Currently, connected apps for Search are available in the United States in English. The initial list of supported apps includes services like Instacart, Canva, YouTube Music, Yahoo Fantasy Football, and Sleeper Fantasy Football. These apps are already operational within the AI Mode environment.

Once an app goes live, developers will have access to data regarding their integration. This includes the ability to view traffic, latency, and error rates. This feedback loop is intended to help developers optimize how their apps communicate with Google's AI systems.

The roadmap for expansion

Google is currently in a phased roll-out of the Connected Apps Platform. The company stated that more developers, geographic markets, and Google products will be added over the next few months. This suggests that the current English-only, US-based availability is just the beginning of the rollout.

In the coming weeks, several partner companies will see their integrations expanded. Apps from companies like Adobe, Experian, Localiza, and Peloton, which are currently on Gemini, will become available on Search. Additionally, a new integration with Calm is scheduled for both Search and Gemini.

While the platform is expanding, some experts suggest the technology is still in its early stages. Google Search Advocate John Mueller noted that while he is excited about the platform, it is still very early. The expansion will determine how deeply these third-party tools become woven into the daily search experience.