ProtoLens · Prototype reviews

From AI prototype
to a revision you can verify.

Review AI-built HTML prototypes right where the decisions happen. Your AI reads the feedback, publishes the next version, and explains how it handled each item.

Request early access See how it works

Reviewers need no account — just a nickname.

Read the build story

ProtoLens V2 review of the Trailmate home screen with a comment being drafted in the right panel — Production screenshot · V2 review. Trailmate is a fictional demo product.

“Change this part” needs a place to land.

A screenshot shows a moment. A chat message explains an opinion. Keeping both tied to the right version takes work.

Put comments, decisions, and the next response alongside the prototype they belong to.

One work. A clearer next round.

You
Your AI (via MCP)
Reviewers

You01

You ask

“Publish this to ProtoLens.”

First time: sign in and approve the connection.

Your AI02

Your AI publishes V1

Returns a private review link.

Reviewers03

Reviewers point and comment

Nickname only, no account. Submit the round.

Your AI04

Your AI reads the feedback and ships V2

A response for each item: addressed, deferred, or needs clarification.

You05

You verify

Accept, or keep it open.

Still open → next round

Feedback is available to your connected AI after submission. ProtoLens does not start an AI run automatically.

A connection between your AI and the review.

MCP is a standard way for an AI app to use tools you authorize.
Connect ProtoLens so your AI can publish a work and read its submitted feedback.
Your reviewers simply open the review link — they do not need to set up MCP.

Use a compatible AI client, such as Claude or ChatGPT, where the required connection features are available. Setup depends on the client, plan, and workspace settings.

Copy the MCP address into your AI client, then authorize access. If that connection flow is unavailable, the dashboard offers a temporary connection.

Point to it.
Say what you mean.

Click an element, select text, or mark a region to leave a comment in context.

V1 review with two anchored comments on the Trailmate prototype and the draft list in the right panel — V1 · Anchored comments on the prototype, with drafts in the review panel.

V1 decision questions with answer choices and additional details — V1 · Decision questions. Cropped from the review panel.

Answer the decisions your AI has prepared. Add your overall stance when you are ready — questions and stance are optional.

Open the link and choose a nickname. Your draft stays private until you submit; submitted feedback is visible to others using the same link.

After submitting, you do not need to copy feedback into a chat.

Submitted confirmation with two comments and three answers — A submitted review is ready for the connected AI to read.

See how your feedback
shaped V2.

V2 response marked Addressed and Awaiting verification under the reviewer's original answer — V2 · Addressed, awaiting verification. Cropped from the review panel.

Your AI reads the submitted feedback and publishes the next version with an explanation for each item: addressed, deferred, or needing clarification.

In Previous round, compare those responses with your original feedback. The original reviewer verifies whether the response meets their intent.

An AI response is not your approval.

In this demo, a reviewer asked for the hero card to lead with “Explore trails nearby”. The V2 response explains what changed; the reviewer still verifies it.

Original reviewer choice and comment with V2 response marked Addressed and Awaiting verification — V2 · Original feedback + AI response. Awaiting verification is not acceptance.

Share the review. Choose the access.

Isolated prototype rendering

Prototypes render on an isolated sandbox domain. Use simulated data; this is a review environment, not a live application backend.

Revocable review links

Anyone holding a link can view, comment, and forward it. Revoke it at any time to stop future access; copies already viewed or downloaded cannot be recalled.

You choose the connection scope

Authorize via OAuth and choose All works or Only works this connection creates. All works includes current and future works in your account.

Temporary when you need it

Create a 15-, 60-, or 240-minute connection in the dashboard, then copy its URL, JSON, or cURL format for a compatible AI workflow. Keep connection details private.

Review drafts remain private until submission. Revoking an AI connection and revoking a review link are separate controls.

Read the Privacy Policy, Terms of Service, and Security overview.

Start with a few works.

A work holds one prototype and its review versions.

Available with early access

Free

3 works included
50 MB storage
Iterate the same work without using another work slot
Earn 1 additional work for each successful referral, up to 10 works in total

Coming soon

Pro

Plan details will be announced later.

A few things to know.

Do reviewers need an account?

No. Reviewers open the private link and choose a nickname. The owner needs access to ProtoLens to connect an AI client and manage works.

What can I publish?

A single, self-contained HTML prototype, up to 5 MB. Inline styles, scripts, and embedded images can preserve prototype interactions within sandbox limits. External resources and live backend calls are not supported.

Which AI clients can I use?

Use a client with the required MCP or temporary-connection capabilities. Claude and ChatGPT are examples to check; availability depends on your client, plan, and workspace settings.

Will my AI update the work automatically?

No. Ask your connected AI to read the submitted feedback and publish a revision. Reviewers do not need to export or paste feedback, and AI responses do not count as human acceptance.

Who can see the review?

Anyone holding the link can view, comment, and forward it. Drafts are private until submission; people using the same link can see submitted feedback. Owners can revoke a link to stop future access.

Can I use ProtoLens now, and what does Free include?

Access is currently invitation-only. Request early access to be considered. Free includes 3 works and 50 MB storage; successful referrals add 1 work each, up to 10 in total. Pro is coming soon.

Give your next prototype
a clearer next round.

Bring the HTML. Keep the feedback in context. Check what changed.

Request early access

Access is currently invitation-only.