Verifiable citations
Claude’s native citations return the exact quoted passage behind each claim. Click a citation and a side panel opens with that passage highlighted in its source document.
Live demoDemo for a fictional company
RAG Chatbot with Citations
Answers only from your documents, and shows you the exact passage it used.
A website chatbot that answers from a company’s own documents, cites the exact quoted passage behind every claim, says plainly when it doesn’t know, captures leads and hands over to a human. One script tag installs it on any site.
- 1 line
- to install on any websiteWordPress, Shopify, Wix, Webflow, Squarespace
- 41
- documents indexedMarkdown, PDF and an imported web page
- 3
- layers of abuse protectionbot check, rate limits, daily spend cap
- 126
- automated testsunit + database
The problem
Businesses want a chatbot that answers customers at 2 am, but generic bots make things up, can’t prove where an answer came from, and quietly go out of date when prices or policies change.
From question to cited answer.
- Visitor asksWidget · 1 script tag
- Hybrid searchpgvector + keywords
- AnswerHaiku · streaming
- Cite & verifyexact quoted passages
- Lead or handoveremail + Slack
- Learn the gapsknowledge-gap report
The parts that make it work.
Hybrid search
Vector search (pgvector) and keyword search fused with reciprocal rank fusion, so exact terms like postcodes, fault codes and model numbers are found as reliably as meaning.
Honest “I don’t know”
No relevant source, no answer. Unanswered questions are logged and grouped by topic in a knowledge-gap report, so the business knows which page to write next.
Leads and handover
When a visitor wants a quote, the bot collects their details with a consent line. “Talk to a person” sends the full transcript to email and Slack.
Learns from your site
Upload Markdown or PDF, or import a web page or sitemap. Re-indexing replaces a document atomically, so outdated content can never be retrieved.
An admin you can hand over
Secure login, documents, conversations with their citations, leads, low-rated answers, the knowledge-gap report and brand settings, all in one place.
Evaluation in progress.
A 50-question tuning set and a 20-question held-out set (out-of-scope questions, multi-turn follow-ups and prompt injections included), graded for retrieval, citation accuracy, honest refusals and cost. The report will be published here with the first-run numbers.
Built to production standards.
Grounded by design
Document text and visitor messages are data, never instructions. Uncited answers are treated as “I don’t know”.
Poisoned-document test
The knowledge base contains planted instructions (a fake 50% discount, fake bank details) to prove the bot ignores them.
Spend is capped
Cloudflare Turnstile, per-IP rate limits, message and turn caps, and a daily spend cap that switches to “please call us”.
Least-privilege database
The app role can only touch its own schema, over verified TLS. Admin credentials never reach the app.
Style-proof widget
The widget runs in an iframe, so it can’t clash with or break the host site, and works on mobile and with a keyboard.
Measured cost
Every answer records its tokens, cost and timing, with prompt caching on the fixed system prompt.
Stack
AI
Claude Haiku 5.5 (streaming, native citations)Voyage AI embeddingsTool use: lead, handover, knowledge gap
Web
Next.js 16 (App Router)TypeScriptEmbeddable widgetServer-sent events
Data
Supabase Postgrespgvector + full-text searchSupabase Auth
Infrastructure
DockerCaddyUbuntu VPSCloudflare TurnstileResendSlack
For your business
Adapts to the tools you already use.
- Your website, help centre or PDFs
- Your brand colours and greeting
- Your CRM for leads
- Your helpdesk for handovers
- Vercel or your own server
Taking on new projects
Got a process that eats your team’s hours? Let’s automate it.
Tell me what it is. I’ll come back with whether AI is the right fix, what it would take, and what it would cost to run.
Replies within 24 hours · Free 30-minute discovery call
To get started, send me
- 1The task you’d like off your plate
- 2The tools it touches (inbox, CRM, website…)
- 3Roughly how often it happens
That’s enough for me to come back with an approach, a rough timeline and the questions that matter.