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Quickstart

Get from zero to your first pinned comment in about five minutes.

1. Create a project

Sign in, then create a project and give it the URL of the site you want to review (staging or production). Marca uses that origin to know where the review snippet is allowed to run.

2. Add the snippet

Open your project, go to the Embed tab, and copy the script tag. It looks like this:

<script
  src="https://www.marca.dev/snippet/r.js"
  data-project="proj_XXXXXXXXXXXXXXXX"
  data-endpoint="https://www.marca.dev"
  defer
></script>

Paste it into the <head> of every page you want reviewable. The data-project value is unique to your project — copy it from the Embed tab rather than typing it by hand.

There's also a short alias, marca.dev/m.js, that serves the same script:

<script src="https://marca.dev/m.js" data-project="proj_XXXXXXXXXXXXXXXX"></script>

See Installing the snippet for framework-specific notes and the data-endpoint rule.

3. Leave your first comment

Load a page that has the snippet. A small floating button appears in the corner for signed-in reviewers. Click it, point at any element, and type a comment. It lands in your project dashboard immediately — no refresh needed.

4. Send it to your tools

Select one or more comments in the dashboard and use Send to… to file them as GitHub or Linear issues, or copy a ready-to-paste brief for Cursor or Claude Code. Connect a tracker first under the project's Integrations tab.

That's the whole loop: drop a tag, click an element, send the fix to your agent.