DFIELDSOLUTIONS

Case study · 2026 · AI · Web · Custom software

Upload a folder of documents.Built a private AI assistant that answers from your own documents. Runs on your own server, no data leaves the building.

AI Chatbot Maker is a turnkey SaaS for spinning up company-private chatbots: upload a folder, point at a website feed, and get an embeddable chatbot that only answers from that data. The studio shipped the SaaS dashboard, the Ollama-backed local LLM stack, the multi-tenant pgvector store, and the Docker-image deploy.

  • Python
  • LangChain
  • PostgreSQL
  • Docker
  • Ollama
  • FastAPI
Internal build, no public URL
AI Chatbot Maker

Inside the build

AI Chatbot Maker — Opening state
Opening state
AI Chatbot Maker — In use
In use
AI Chatbot Maker — Result
Result

Overview

5 min
Folder → live chatbot
100%
On-prem · zero data leaves
RLS
Per-tenant isolation
<embed>
Snippet · no integration project

Client uploads a folder of documents or points at their website; they get a turnkey AI chatbot that only answers from their own data. Local LLM via Ollama · nothing leaves the company's server, GDPR-safe by default. One Docker image, one command to deploy.

What shipped

What it does

  • Knowledge sources: uploaded files, folders, website URLs · mix any
  • 100% local · Ollama + Postgres pgvector on-server, no external API
  • One-click chatbot creation with an embed snippet for the company's site
  • Docker-image deploy · 5 minutes to your own server
  • Multi-tenant SaaS mode · many companies one platform, strict RLS isolation

The problem

  • ChatGPT plugins don't know your company data · generic answers for everyone
  • OpenAI / Anthropic integration leaks data · hard to square with GDPR
  • A custom chatbot build is 3-6 months · doesn't fit a mid-market budget
  • Training a company-specific model needs an ML team

Why it matters

  • Live chatbot in 5 minutes, answering only from your own data
  • Nothing leaves the server · audit-ready, GDPR-compatible
  • One platform, many clients · SaaS model with multi-tenant isolation
  • Embed snippet for the company site · no integration project needed

How it shipped

  1. 01 · BRIEF

    Solve the GDPR + speed-to-live conflict.

    OpenAI integrations leak data; bespoke chatbot builds take 6 months. We scoped a SaaS that runs locally on the customer's server · GDPR-safe by default, one Docker image to deploy.

  2. 02 · BUILD

    FastAPI + Ollama + Postgres pgvector.

    FastAPI carries the multi-tenant API, Ollama runs the local LLM, Postgres + pgvector handles per-tenant retrieval with row-level security · LangChain glues the retrieval-augmented generation pipeline.

  3. 03 · SHIP

    One Docker image, embeddable snippet.

    Customer pulls a single image, runs one command, gets a dashboard. From there: upload data → click 'create chatbot' → paste the embed snippet on their site. 5 minutes end-to-end on a fresh box.

Stack

Local LLM

Ollama + Postgres pgvector on-prem

Zero external API calls · the answer never leaves the customer's server. GDPR + audit-ready out of the box.

Sources

Files, folders, website URLs · mix any

Knowledge base accepts uploaded docs and crawls a site feed in the same project · re-ingest is one click.

Multi-tenant

Per-tenant RLS isolation

Postgres row-level security guarantees no tenant ever sees another's data · also enforced at the retrieval layer.

Deploy

One Docker image, one command

Customer ops team handles it on their own infra · no AWS-account-share, no shared SaaS tenant.

Case study

“We had a strict GDPR rule and 6 weeks to ship. The studio built a chatbot that runs entirely on our own server, we just upload a folder of documents, and it answers like a colleague who's read all of them. The website code went live on day 38. Not a single byte of customer data has ever left our machine. Our compliance officer literally smiled when he saw it.”

Anonymous · Engineering lead · mid-market SaaS (under NDA) · NL

More work

DField Solutions · DField Bt. · dezso@dfieldsolutions.com
5.0
“From LinkedIn DM to live site. Two tiny tweaks, then shipped.”Michael J Ringer · Vilya ProtectionFounder · Spain