Every so often a customer asks whether they can paste in a widget some other tool handed them: a Calendly booking widget, a Google review carousel, a TikTok embed, sometimes just a script tag a developer friend wrote for them. The answer's yes, and it's less interesting than you'd think, because Cantrip doesn't do anything clever with it. It just runs.
The section is called Custom Code, and it's exactly what it sounds like: a plain text box on a page, no rich text toolbar, nothing rewriting your work behind your back. Paste in HTML, CSS, JavaScript, or an embed code from wherever you got it, and that's what ships. There's no filter stripping tags, no sanitizer quietly deleting anything that looks like a script. Whatever you type is what runs on the live page, script tags included.
That's a real tradeoff, worth saying plainly instead of hiding it. Most page builders that let you drag content around also strip or neuter raw script tags, because unfiltered code from a stranger is exactly how a website ends up with a hijacked redirect bolted onto it. Cantrip doesn't second-guess you here. Paste something you trust and it works exactly like the vendor promised. Paste something you found in a shady forum post and it works too, which is the part to be careful about.
Find it under Advanced Sections when you go to add something to a page, not in the regular list with Photo Grid and Testimonials. That placement isn't an accident. Everything else in the regular list is a form: fill in fields, and Cantrip renders it consistently across every theme. Custom Code is the one section where you're the one writing the actual markup, so it gets filed separately, for people who know what they're pasting.
The one honest catch: the visual editor won't show you if it worked. Every other section on a page updates live in the editor's preview as you type. Custom Code doesn't. Add your embed, and the editor shows a placeholder card with a small note that the code runs on your live site, not in the preview. That's deliberate, not a bug: nobody wants a stranger's script executing inside their own editing session before they've even seen it. It just means the workflow is different from the rest of the page. Save, then open the actual published page in a new tab and look. If the Calendly widget doesn't show up there, that's your answer, not the editor.
None of this is a complaint about the feature. It's the one section built for people who want to paste something in and trust it, not have Cantrip guess at what they meant. Just know which section that is before you paste something you copied from a place you don't fully trust.