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CircleIt vs Agentation and Vibe Annotations

Agentation and Vibe Annotations hand your own notes on a local site to your agent. CircleIt does that for your clients and teammates too, from staging or the live site in their own browser, straight into the Claude Code or Codex session that’s already open.

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CircleIt compared with Agentation and Vibe Annotations
What CircleIt Agentation Vibe Annotations
Clients send from staging or the live site Yes Anyone you invite marks up staging or the live site in their own browser, and it reaches your session. No It runs only on localhost and development sites, inside your app. No Annotations stay on the computer they were made on. To pass them on, you export a .md or .html file.
Goes into the agent session that’s already running Yes Each send goes to the Claude Code or Codex session working on that site. Yes From a local server on your computer: the agent can watch for new annotations. Yes From a local server on your computer, with a watch mode.
What the agent gets Screenshots of each mark, and for every element under it the selector, text, styles, HTML and source-file hints. For text edits, the old and new words. Text only: selectors, source paths, the React component tree and computed styles. No screenshots. Each element’s selector and React or Vue component, notes, design edits and screenshots.
What it needs The extension, in Chrome or Edge on a computer, and the plugin in Claude Code or Codex. Nothing is added to your app. A React component added to your app (React 18 or newer), on a desktop browser. A Chrome extension, and a local server the developer runs. It turns on for localhost; a public site needs permission first.
Inbox, approval and roles Yes A shared inbox with a timeline for each send, an approval step, roles, and a choice of who sees each project. No No cloud or team features. No Everything stays on your computer, with no account.
Pricing Per developer. Personal is $9 a month, just you. Team is $25 a month with 1 developer, and clients and teammates are free. Your first 10 changes are free, with no card. Free for individuals and internal team use. Free.

What you get with CircleIt

  1. 01

    Clients and teammates can send

    Agentation and Vibe Annotations are built for the developer at the agent. With CircleIt, anyone you invite marks up staging or the live site in their own browser, and it reaches your session.

  2. 02

    Nothing to add to your app

    Agentation is a React component you add to your app in development. CircleIt is a browser extension, so it works on any site, whatever it’s built with.

  3. 03

    Screenshots and the element

    Agentation’s output is text only. CircleIt sends screenshots of each mark as well as each element’s selector, text, styles, HTML and source-file hints.

  4. 04

    A team around it

    Every send waits in a shared inbox until a session picks it up, with a timeline of what happened. Set clients to Needs approval, and choose who sees each project.

  5. 05

    The sender sees it’s done

    When the agent finishes, the sender’s page shows Done with the agent’s note. Before that, they see it move from Sent to Picked up to Being worked on, so they don’t have to email you to ask.

Questions

Can my clients use Agentation or Vibe Annotations?

They’re built for the developer at the agent. Agentation runs only on localhost and development sites, and Vibe Annotations keeps annotations on the computer they were made on, so a client would export a file and send it to you. With CircleIt, clients send from their own browser on staging or the live site, straight to your session.

Does CircleIt work on localhost too?

Yes. The extension runs in your browser, so it marks up your dev server, a .test domain, staging behind a login or the live site.

Does CircleIt work with Codex?

Yes. The plugin works in Claude Code and Codex. In Codex, an idle thread picks up new feedback within about 10 seconds.

Can I try CircleIt before I pay?

Yes. Your first 10 changes are free, with no card, and they don’t expire. A change is one press of Send. After that, Personal is $9 a month and Team is $25 a month.

Details about Agentation and Vibe Annotations are from their public websites and the Chrome Web Store on 4 October 2026.

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Your first 10 changes are free. No card needed.