AI Call Agents on Your Site: Why Use Them and How To Set Them Up (Step by Step)

If customers wait on hold, bounce from your site, or ask the same questions again and again, an AI call agent can help. It answers in real time, handles bookings, checks order status, and passes complex cases to a human. The result is faster replies, lower support load, and a better experience.

This guide explains why AI voice agents are worth it, how to launch one with ElevenLabs, and how to match it to your site’s theme. At the end, I share a safe note about branding and your best options.

Why an AI call agent helps

1) Instant answers: Customers get help in seconds, not minutes. That reduces drop-off and support tickets.
2) 24/7 coverage: Nights, weekends, and holidays stay covered without hiring extra staff.
3) Fewer repetitive tasks: The agent handles FAQs, simple order checks, and appointment booking. Your team focuses on real problems.
4) Consistent tone and accuracy: The same approved answers every time, grounded in your own knowledge base.
5) Multilingual reach: Support more users with automatic language detection and natural-sounding voices.

Where it fits

  • Customer support: Order status, returns, basic troubleshooting.
  • Scheduling and bookings: Clinics, salons, demos, deliveries.
  • Sales qualification: Collect details, qualify, and book a call.
  • Learning and training: Role-play scenarios for staff.
  • Ecommerce help: Product Q&A and quick checkout guidance.

What ElevenLabs does well

  • Natural, low-latency voice in many languages.
  • Flexible stack: Bring your own LLM or use theirs.
  • RAG grounding: Connect your docs, FAQs, and URLs so answers come from your content.
  • Embeds and SDKs: Add to websites, apps, or phone lines.
  • Scales to enterprise: Logging, analytics, and controls.

Set it up on your website, step by step

Before you start: Create an ElevenLabs account and build an agent in their dashboard. Add your knowledge base items there first, like FAQs and policy pages.

Step 1: Create the agent

  1. Pick a voice and language.
  2. Set personality and tone.
  3. Add your knowledge base: upload PDFs, paste FAQs, or provide URLs.
  4. Define allowed actions, like booking or sending emails, if you plan to connect tools.

Step 2: Test in the dashboard

  • Ask real questions.
  • Check correctness and tone.
  • Update or remove any weak sources that confuse the agent.

Step 3: Embed on your site

In your site’s HTML, place the official embed snippet from the ElevenLabs dashboard where you want the widget to appear. It usually includes a script plus a custom element like <elevenlabs-convai ...></elevenlabs-convai>.

  • Paste it near the end of <body> for faster loads.
  • If you use WordPress, you can insert it in a “Custom HTML” block or your theme’s footer injection area.

Step 4: Connect tools and workflows

  • Link your calendar system for scheduling.
  • Connect help desk, CRM, or payment gateways if needed.
  • Set rules for when to escalate to a human.

Step 5: Go live and measure

  • Track conversations, resolution rate, handoff rate, and CSAT.
  • Improve your knowledge base based on real user questions.
  • Update the agent’s tone and prompts over time.

Optional: match the widget to your dark or light theme

If your site uses a theme toggle, you can nudge the widget’s surfaces to follow it. The script below waits for the widget to load, checks your site’s data-scheme attribute, then adjusts the widget’s backgrounds. This is a light touch for visual polish.


<script>
document.addEventListener("DOMContentLoaded", function () {
  const THEME_ROOT = document.querySelector(".cs-offcanvas");

  function getIsDark() {
    const scheme = THEME_ROOT?.getAttribute("data-scheme");
    return scheme === "dark";
  }

  function paintElevenLabsColors(isDark) {
    const convai = document.querySelector("elevenlabs-convai");
    const sr = convai?.shadowRoot;
    if (!sr) return;

    const bgElements = sr.querySelectorAll(".bg-base, .bg-base-border");
    bgElements.forEach((el) => {
      if (!el.dataset.bgTransition) {
        el.style.transition =
          (el.style.transition ? el.style.transition + ", " : "") +
          "background-color 0.3s ease";
        el.dataset.bgTransition = "1";
      }
      el.style.setProperty(
        "background-color",
        isDark ? "#262626" : "#ffffff",
        "important"
      );
    });
  }

  function syncNow() {
    paintElevenLabsColors(getIsDark());
  }

  setTimeout(syncNow, 300);

  let tries = 0;
  const retry = setInterval(() => {
    syncNow();
    if (++tries >= 30) clearInterval(retry);
  }, 200);

  if (THEME_ROOT) {
    const obs = new MutationObserver((muts) => {
      if (muts.some(m => m.attributeName === "data-scheme")) syncNow();
    });
    obs.observe(THEME_ROOT, { attributes: true });
  }
});
</script>

About removing branding on the free plan

If you are on the free plan, we can temporarily remove the branding from the AI. Here is the code you can use. Keep in mind that the free plan has limited credits, so our goal is simply to help you use those free credits on your site in the most useful way. However, if you can afford it, it’s always better to purchase a paid plan for full features and long-term reliability.

This code is locked
👁
Enter the password to view and copy the code.
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Locked preview

Best practices for a successful launch

Be transparent: Tell users they are talking to an AI, and when a human will step in.

  • Mind privacy: Do not collect sensitive data unless you have consent and a secure flow.
  • Plan escalation: Define clear rules for handoff to a human agent.
  • Keep content fresh: Reindex your knowledge base when policies change.
  • Review analytics weekly: Improve prompts, sources, and flows based on real data.

Want help customizing your agent?

Follow ctrlaltimran.com for more guides and examples.
If you want a tailored setup, theme-matched UI, and integrations with your stack, you can hire me!

I can design the conversation flow, wire the tools you use, and make the voice agent feel native to your brand.

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