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Google Adds Webhooks to Gemini API to Eliminate Polling Traffic

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Google launched event-driven Webhooks for the Gemini API, allowing developers to receive push-based notifications when long-running operations complete. This update replaces the need for continuous polling—the practice of repeatedly querying an API to check a task's status—for the Batch API and other asynchronous jobs.
Availability
Gemini API, Google AI Studio, Vertex AI
Supported Workflows
Batch API, Long-running operations
Notification Type
Event-driven Webhooks (Push-based)
Launch Date
May 4, 2026
Primary Benefit
Reduced API traffic and simplified orchestration

As agentic workflows move toward multi-step reasoning and massive data processing, polling becomes a significant bottleneck that wastes bandwidth and complicates server-side logic. This move mirrors OpenAI's WebSocket-based Responses API in the race to optimize the "plumbing" of AI infrastructure.

You can now configure Webhook endpoints in the Gemini API to trigger downstream actions immediately upon task completion. This is particularly useful for Google's Deep Research API and other high-latency tasks that previously required complex retry loops. The feature is available now for all users through Google AI Studio and Vertex AI.

View the full update on ai.google.dev
Google AI Developers
Google AI Developers
@googleaidevs
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Say goodbye to continuous polling! Eliminate wasted API traffic and simplify orchestration logic with Webhooks in the Gemini API while building complex, long-running agentic apps. 🙌 https://t.co/SplSOZ6wNT

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Still wondering? A few quick answers below.

Webhooks are a push-based notification system that allows the Gemini API to send real-time data to your server as soon as a task is finished. Instead of your application constantly asking if a job is done, Google automatically sends a notification to a URL you provide, simplifying how you manage long-running AI tasks.

By replacing continuous polling, Webhooks eliminate unnecessary API traffic and reduce the latency between a task finishing and your application taking the next step. This event-driven approach simplifies orchestration logic for developers, making it more efficient to build complex, long-running agentic applications that process large amounts of data without wasting bandwidth.

Google launched Webhook support specifically for the Batch API and other long-running operations. These features are typically used for asynchronous tasks that take time to complete, such as processing large datasets or running complex reasoning chains. Webhooks ensure your system is notified immediately once these background processes are finalized without manual checks.

Yes, Webhook support is integrated into the Gemini API ecosystem, which includes Google AI Studio and Vertex AI. Developers can configure these event-driven notifications within their orchestration logic to streamline how they build and manage agentic apps. This allows for more robust automation when handling tasks that do not provide an immediate response.

Google officially launched event-driven Webhook support for the Gemini API on May 4, 2026. The update was introduced to help developers move away from inefficient polling workflows. It is now part of the standard Gemini API toolset for managing Batch API jobs and other operations that require asynchronous execution in production environments.

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