Build a custom AI chatbot on your own documents, give it your brand and tone, and embed it anywhere with a single line of code. Answers come straight from your content — no hallucinated facts.
Build your agent — free See how it worksA complete custom AI chatbot for your website — trained on your knowledge, branded as yours.
Paste text or upload your docs. Retrieval-augmented generation (RAG) grounds every answer in your own content.
Drop a single <script> tag on any site — WordPress, Shopify, Webflow or plain HTML. Live in minutes.
Set the name, persona, tone, accent colour and welcome message. Pro adds a custom mascot and removes our badge.
The agent answers only from your knowledge base and says when it doesn't know — instead of inventing answers.
Per-IP throttling, monthly chat caps and Pro domain locking keep your agent — and your costs — under control.
Everything is point-and-click in Helper Studio. No servers, no pipelines, no maintenance.
From zero to a live AI chatbot on your website in three steps.
Paste text or upload your FAQs, docs and policies.
Pick a name, persona, tone, colour and mascot.
Copy the snippet onto your site — that's it.
Start free. The AI agent is just the start — every paid plan also unlocks our entire suite of 20+ AI tools.
Basic & Pro don't just power your website agent — they unlock everything on The Prompt Index: Prompt Generator & Optimizer, AI Humanizer, Image Labs, Sound Labs, AI Study Studio, AI CV Builder, Decision Lab, Slide Studio, Search & Cite, SignalScope, PromptBook and more. The value is, frankly, insane.
Everything about building an AI agent for your website.
An AI agent (also called an AI chatbot or AI assistant) is a chat widget you embed on your site that answers visitors' questions instantly. Ours is trained on your own content — your FAQs, docs and policies — so every answer is grounded in your information, not generic web data.
No. You build and train your agent in Helper Studio with no code, then copy one line of HTML onto your site. It works on any website — WordPress, Shopify, Webflow, a plain HTML page, anything.
You paste text or upload your documents and we index them using retrieval-augmented generation (RAG). When a visitor asks a question, the agent finds the most relevant passages from your content and writes an answer from them — and says it doesn't know rather than making things up.
It's free to start. The Free plan includes one agent; Basic and Pro unlock more agents, documents and monthly chats, plus a custom mascot, domain locking and badge removal on Pro.
Yes — set the name, persona, tone, accent colour and welcome message. Pro users can upload a custom mascot image and remove the "Powered by The Prompt Index" badge.
Yes. If your site sends a CSP, allow our domain by adding https://www.thepromptindex.com to your script-src, style-src, connect-src and img-src directives. Sites without a CSP need no changes at all — just paste the one line.
Build a custom AI chatbot trained on your data, free — and embed it on your website in minutes.
Build your agent — free