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You do not need a developer, a marketplace app, or a redesign to put an AI assistant on your site. On WordPress, Wix and Squarespace it is the same one-line script tag — only the box you paste it into differs. Here is that box on each platform, and the order of operations that saves you the most time.
First: meet the assistant, then install it
Install last. Put your address into the assistant preview and you get a working assistant built from your own public pages, on a shareable link — before any code touches your site. Show it to whoever answers your customer emails and let them break it. If the answers are wrong, that is a content problem, and fixing it now is far cheaper than fixing it live.
When you are happy, take the snippet — the Console renders it with your real address and workspace slug:
<script
src="https://[your-assistant-address]/embed/v1.js"
data-assistant="[your-workspace-slug]"
data-label="Ask us"
async
></script>WordPress
WordPress prints anything hooked to wp_head inside the <head> of every page — "one of the most essential theme hooks, so it is widely supported" (WordPress developer reference). You have two safe routes:
- A header-snippet plugin (the usual choice). Install any "insert headers and footers" plugin from the official plugin directory, open its header box, paste the tag, save.
- Your theme's own header field. Many themes ship a Custom code or Header scripts box under Appearance or Theme options. Use that rather than editing
header.phpdirectly — a theme update overwrites edited template files, and never touches a settings box.
Either way: paste once, site-wide. Do not add it per page.
Wix
Open Settings → Custom Code in your site's dashboard (under Development & integrations), add a snippet, paste the tag, choose Head and All pages, then publish (Wix Help Center). Wix keeps these snippets invisible to visitors and lets you scope them to specific pages if you ever want the assistant on your pricing page only. Wix does not support third-party code itself, so keep the snippet as issued.
Squarespace
Open Settings → Advanced → Code Injection and paste the tag into the Header field; code there "is injected into the <head> tag on every page in your site" (Squarespace Help Center). Two honest caveats: code injection is only available on the paid plans that include it, and checkout pages do not run injected code — so the assistant will not appear during checkout.
Ask your assistant to do it
If you would rather not click through settings screens, describe the job:
My website is https://[your-site], built on [WordPress / Wix / Squarespace].
Tell me exactly where in this platform's admin I paste a site-wide <head> script,
click by click, and confirm afterwards how I check that the script is live on
every page. Warn me about anything on my plan that would block it, and mark
anything you are unsure about with [CHECK].After it is live, in this order
- Give it your content. An assistant is only as good as what it may read — point it at your own pages and publish curated text for anything the site does not say (knowledge guide).
- Set the hand-off. Decide when a person takes over, so a stuck conversation becomes an email rather than a lost customer (hand-off).
- Let it act, not only answer. Your booking or contact form can become an action an assistant can complete on the page, with the visitor confirming (WebMCP, page tools).
- Publish an llms.txt so assistants arriving from elsewhere know what your site is about.
Installation takes about five minutes on any of the three. The content step is the one worth an afternoon — and pricing starts where a small site starts.
Questions
Do I need a plugin or an app from a marketplace?
No. The assistant is one script tag, and all three platforms have a built-in place to paste a script — a header snippet on WordPress, Custom Code on Wix, Code Injection on Squarespace. A plugin is only a friendlier box to paste the same line into.
Will it slow my website down?
The tag is loaded with the async attribute, so the browser keeps rendering your page while it fetches. Paste it once, in the site-wide header, rather than repeating it in every page's body.
Can I see the assistant before I sign up for anything?
Yes — put your web address into the preview and you get a working assistant built from your own public pages, on a link you can share with a colleague before you install a thing.
What if my Squarespace plan does not allow code injection?
Code injection needs one of the paid plans that includes it. Until then you can link customers to a hosted assistant page instead of embedding it, which needs no code at all.
How do I remove it again?
Delete the snippet from the same box you pasted it into and republish. Nothing else on your site was changed, so removal is a single edit.