A visual editor for Cursor's agent, in your browser

If you work in the Cursor app every day, Design Mode is excellent: you can select elements, edit text in place, adjust CSS and send all of it to the agent with the component attached. You probably don't need InstaWeb for that.

InstaWeb is for when the people building aren't all in Cursor's app: clients and teammates working in any browser, three screen sizes at once, Claude Code and Codex in the same project, and publishing to the host you already use instead of Cursor's own.

See the app while Cursor builds it

Your app runs live beside the chat, at desktop, tablet and mobile sizes at once. Every change Cursor makes shows up as it is saved, so you watch the result instead of reading a diff.

Click the thing you want changed

Select a heading, a button or a section on the page and type what you want. The agent gets the element, the file and line it comes from, and a screenshot, so you don't have to describe where it is. Double-click text to change it in place without a prompt at all.

Your plan, your models

Pick Cursor and any model your Cursor plan offers, for each chat. Requests come out of your Cursor plan's usage pool, exactly as they would in the Cursor CLI.

Switch agents without losing the thread

Hit a limit, or want a second opinion? Pick another agent from the same menu. InstaWeb hands the new one the conversation so far, so it carries on from where the last one stopped.

Publish to the host you choose

When it is ready, a deploy agent builds the app and puts it on Vercel, Netlify, Cloudflare, AWS or any server you can reach over SSH, signing in through the host's own page. The code stays a normal Git repository in your GitHub.

Cursor offers its desktop app (the classic editor and the Agents Window), a CLI, and cloud agents you can start from the web, your phone, Slack or GitHub. Design Mode lives in the browser inside the Agents Window: select one or more elements or an area, edit text in place, inspect and edit CSS, draw or dictate notes, and send them to the agent with the component and a screenshot. Cloud agents can also publish apps that Cursor hosts.

InstaWeb runs Cursor's own command-line agent on your computer. You sign in with its own login, which finishes on Cursor's page, and InstaWeb never sees your Cursor account. You can use a Cursor API key instead.

Every request comes out of your Cursor plan's usage. One difference from Cursor's app: the CLI can't take a new instruction in the middle of a run, so when you steer a Cursor run, InstaWeb restarts it with your message and the chat so far.

The agent works on the project's real files in a normal Git repository, and each run is saved as a commit, so any change can be undone.

1. 1

   Sign in and paste one command

   Sign in at instawebai.com and paste the command it gives you into a terminal. That is the only time you need one: InstaWeb then runs in the background and you work in your browser.

2. 2

   Connect your agent

   Your AI lists Claude Code, Codex, Cursor and OpenCode. If one isn't installed, InstaWeb installs it with its maker's own installer, then opens the maker's own sign-in page. You can paste an API key instead.

3. 3

   Start or open a project

   Describe what you want, import a repository from GitHub, or open a folder on your computer. The app starts in the workspace with a live preview.

InstaWeb is one way to work with Cursor, not the only good one. You probably don't need it if:

• You work in the Cursor app every day, and Design Mode in the Agents Window does what you need.
• You are happy for Cursor to host the app through cloud agents.
• Your project isn't a web app. InstaWeb previews apps that have a dev server: Next.js, Vite, Astro, SvelteKit, Nuxt, React Router and more.

Is this the same as Cursor's Design Mode?

No. Design Mode is part of Cursor's desktop app. InstaWeb is a separate product that runs Cursor's agent through the Cursor CLI, in your browser, alongside other agents.

Do I need the Cursor app installed?

No. InstaWeb uses the Cursor CLI, and installs it with Cursor's own installer if it isn't on your computer.

Does InstaWeb add AI costs?

No. InstaWeb is a one-time licence and sells no AI, credits or tokens. Every request runs on the AI plan or API key you already have.

Can I use it on a project I already have?

Yes. Import a repository from GitHub or open a folder on your computer. Projects built in Lovable, Bolt, v0 or Base44 open too, once they are in GitHub.

What happens to my app if I stop using InstaWeb?

Nothing. It is a normal Git repository on your computer and in your GitHub, running on your host. Nothing in it calls InstaWeb.

Everything said about Cursor here comes from the official pricing pages and documentation, read on 13 November 2026. Plans and features change: check them before you decide, and tell us if something here is out of date.

• Cursor docs: Design Mode
• Cursor docs: Agents Window
• Cursor docs: CLI
• Cursor docs: apps from cloud agents
• Cursor docs: models and pricing
• Cursor pricing
• Cursor changelog 2.2: the browser visual editor