Artifacts for Codex: publish, share and review what it makes

Short answerThe ChatGPT desktop app previews what Codex generates for you, beside the chat. Overto gives that output a link your team can open. Add one MCP server to Codex, ask it to publish, and teammates sign in with Google to comment, draw and see every version.

What Codex makes that’s worth sharing

Codex already produces more than code. These are the things teams most often want to pass around:

• HTML slide decks for a review or a status update.
• Dashboards and reports built from data Codex pulled or computed.
• Prototypes of a screen or a flow, as a single page or a small static site.
• Docs in Markdown: specs, plans, post-mortems and research notes.

On your machine those are files in a folder. Overto turns each one into a stable link that opens in the browser, behind your workspace sign-in.

Connect Codex to Overto

Overto is a remote MCP server over HTTPS with OAuth. Nothing runs locally.

1. Add the Overto MCP server

   Run this once in your terminal:

   codex mcp add overto --url https://mcp.overto.work/mcp

   The Codex CLI, the IDE extension and the ChatGPT desktop app share this MCP configuration, so one setup covers all three. Keep the URL unchanged; you choose the workspace when you sign in.

2. Sign in and choose your workspace

   Run codex mcp login overto. Your browser opens Overto’s sign-in. In the Codex TUI, /mcp lists the connected servers.

   Sign in with Google, choose a workspace, review the requested read, write or administration access and select Authorize. A connection stays signed in for up to seven days.

3. Check access

   Ask Codex to call overto_whoami. It reports the workspace you’re connected to, your upload limits and your usage. Before it makes anything visual, it reads your house style with overto_design.

4. Install the Overto skills (recommended)

   Three small instruction files teach Codex the Overto workflows: overto works on one artifact, overto-share publishes and revises, and overto-find searches and reviews discussions. They contain no credentials.

   for s in overto overto-share overto-find; do mkdir -p ~/.codex/skills/$s && curl -fsSL https://overto.work/skills/$s/SKILL.md -o ~/.codex/skills/$s/SKILL.md; done

   Restart Codex. In the Overto viewer, Copy for agent copies /overto <artifact-id>. In Codex, type $overto <artifact-id> instead.

Publish from Codex

Ask in plain words, for example: “Publish the Q3 dashboard in ./report to Overto in the Launch project.” Codex calls overto_publish and gets back the link and the version number.

• Each file can be up to 25 MiB on Free, and larger on Enterprise.
• A new page opens only for the people the project allows. You can keep it to yourself, share it with the workspace or, for Markdown docs and websites, turn on a public link.

See publishing and versions for the details.

Your team comments and draws on the page

Reviewers don’t need a terminal, a repo or a ChatGPT account. They sign in with Google and point at what they mean:

• select a sentence in a doc or on a page and comment on it;
• comment on a chart, a button or any other element of an HTML page;
• choose Annotate to circle, highlight or draw an arrow, and leave a note with the drawing;
• mention a teammate to bring them into the thread.

More in comments and review.

Codex reads the comments and publishes v2

When you’re ready for a revision, choose Copy for agent in the viewer and type $overto <artifact-id> in Codex. Codex reads the open threads with overto_comment_list, including drawings as short text descriptions, reads the current version with overto_artifact_read, and publishes the next version on top of the one you reviewed. It replies in each thread with overto_comment_post.

Every publish is a new version. The link always opens the latest one, older versions stay in history, and anyone who can manage the project can roll back, with a reason.

Codex Sites or Overto?

They solve different problems, and both can be the right choice.

• Codex Sites builds and hosts a website from a description in ChatGPT or Codex. A new site is limited to its owner and workspace admins until the owner widens access to the workspace, invited external viewers or, where public publishing is enabled, anyone on the internet. Pick Sites when you want OpenAI to build and host the site.
• Overto is a review workspace for files your agents already made. Comments sit on the exact passage or element, drawings are readable by the agent, every version is kept, and Claude Code, Cursor or OpenCode can publish to the same project. Pick Overto when the page needs feedback and a next version.

For a wider view, see how each AI tool shares what it makes.

Sources: OpenAI, Work with files, Sites: publish and share and Model Context Protocol.

Third-party product facts on this page were last checked on 24 October 2026, against each vendor’s own documentation. Codex and ChatGPT are trademarks of OpenAI. Overto is an independent product and is not affiliated with or endorsed by OpenAI.