What is OpenAI’s Codex for Mac Chronicle?

Codex for Mac gets “Chronicle,” but screenshots are sent first

OpenAI has introduced a new research preview feature called Chronicle for Codex for Mac. Chronicle is designed to make the coding assistant more aware of context by using screen captures.

What the feature does

Instead of relying only on text prompts, Chronicle periodically captures screenshots on the user’s Mac. Those images are then sent to OpenAI’s servers for processing so Codex can generate outputs with more up-to-date information about what’s currently visible—such as a developer’s workspace, open files, or other on-screen context.

The feature is described as being available as a research preview for Pro subscribers on macOS.

Why it matters

This is part of a broader trend in AI coding tools: moving from “single-turn” chat toward persistent context and more agent-like behavior. In practice, the ability to see what a developer is doing can reduce the need for the user to describe every step, potentially improving coding assistance for tasks like debugging and integrating changes across an active project.

However, screen-capture features also raise obvious privacy and security questions for developers—especially because the assistant is consuming information from what is literally on the screen.

Because it’s a research preview, the scope of availability (who can enable it, how often it captures, and what controls users have) remains constrained to what OpenAI has already published in the preview announcement.

For teams adopting AI coding assistants, this adds a new evaluation dimension: not just model quality and cost, but also how context collection could affect sensitive work, including credentials, proprietary code, and internal dashboards that may appear on screen.