Use Codex with WebMCP

Access: Signed in to Mint, with Site tools available in Codex WebMCP lets Codex work directly with your open Mint page and signed-in session. Ask it to build a Studio scene, animate a shot, render it, and attach the saved video to Chat. You can review and adjust the same scene in Studio as you work.

Open Mint in the built-in browser

Access: Signed in to Mint, with Site tools available in Codex

Use Codex in the latest desktop app and open Mint in its built-in browser.
Sign in to Mint and open the Project you want to use.
In the browser’s address bar, open Site tools, then Available site tools to check that Mint’s tools are available.

OpenAI currently supports Site tools with GPT-5.6 Sol and GPT-5.6 Terra. Site tools are unavailable with GPT-5.6 Luna and in Enterprise or Edu workspaces; availability also depends on rollout and the current page. Check OpenAI’s Site tools guide for current requirements. You can ask Codex:

Inspect this Mint Project using WebMCP. Tell me what is in the Studio scene and whether you can animate it, render a video, and attach the render to Chat.

Create and animate a scene

Access: Signed in to Mint, with Site tools available in Codex Describe the objects, composition, camera movement, and duration. Tell Codex whether to use the current scene or create a new one.

Using Mint's WebMCP tools, create a new scene in this Project for a perfume commercial. Place a simple bottle shape on a pedestal and create an 8-second camera move that slowly circles it. Keep the bottle centered. Save the scene and animation, then show me the shot before rendering.

Review the scene in Studio. Adjust it yourself or ask Codex for changes:

Move the camera closer and slow down the movement near the end. Save the updated animation.

For the manual steps, see Build and animate the shot.

Render and prepare the Chat prompt

Access: Signed in to Mint, with Site tools available in Codex Once the shot looks right, ask Codex:

Render this animation, wait until the video is saved, and attach it to this Project's Chat. Draft a prompt asking Mint to turn the bottle into polished silver and the pedestal into weathered limestone, with warm evening light and realistic reflections. Use the render to guide the camera movement and timing. Show me the prompt before sending it.

Codex can perform the Add to chat handoff through WebMCP. The saved render becomes a reference in the visible Chat draft. Attaching the render and drafting the prompt do not start video generation. Keep the Mint tab open while rendering. Ask Codex to confirm the render is saved before continuing.

Generate and review the video

Access: Signed in to Mint, with Site tools available in Codex Review the attached render, prompt, and selected generation preset. Codex can inspect or change the preset before sending; describing a higher-quality look in the prompt does not change the selected preset. Send the message yourself or tell Codex:

Send the prepared prompt with the attached render.

Mint follows the same Studio-reference workflow as a message you send yourself: it creates an appearance Preview, then generates the video. When approval is required, review or edit the Preview and click Generate Video. With automatic generation enabled, Mint continues after the Preview is ready. Studio rendering, appearance Previews, and video generation use Mint Credits. Codex can check progress: a submitted prompt confirms that the message was accepted, while a playable video confirms that generation has finished. For another take, continue in the same Mint chat so the original references and creative direction carry forward. See Revise a generated video.

If Site tools are unavailable

Access: Site tools availability depends on your Codex setup Check that Mint is open in the desktop app’s built-in browser, you are signed in, and your Project is open. In Settings → Browser → Permissions, check Enable site tools. Ask Codex to check the tools available on the current page again after opening or switching Projects. Tools belong to the open page. Closing it or navigating away can make them unavailable. See OpenAI’s Site tools guide for browser and model requirements, or follow the manual video workflow in Mint. Next step: Create Videos

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Use Codex with WebMCP

Open Mint in the built-in browser

Create and animate a scene

Render and prepare the Chat prompt

Generate and review the video

If Site tools are unavailable

​Open Mint in the built-in browser

​Create and animate a scene

​Render and prepare the Chat prompt

​Generate and review the video

​If Site tools are unavailable

Open Mint in the built-in browser

Create and animate a scene

Render and prepare the Chat prompt

Generate and review the video

If Site tools are unavailable