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Reactll — AI & Software Engineering Reactor Technology
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AI in your product that works after the demo. Answers from your own data.

An assistant, search and drafts that answer from your docs and the user’s own data, respect permissions and have a spending cap. Built into the product you already run.

See What We Build

It answers from the user’s own data, shows the source, and hands over when it should.

Based on your product

2018

Building and running live software since

7

Products of our own we run live

3

AI providers we can switch between

3

Cities: Istanbul, Amsterdam and Miami

What we build

Four AI features we build into SaaS products, each one checked by a person

Inside the product you already run
01

An assistant inside your product

Answers how-do-I and account questions from your docs and the user’s own data, shows where each answer came from, and hands over to support when it should.

02

AI search across the product

Users search in their own words and find records, settings and docs, without knowing the exact name.

03

Drafts users approve

Summaries, replies or reports drafted inside the workflow. The user reads, edits and confirms; nothing is sent or changed on its own.

04

An MCP server for your product

A way for AI assistants such as Claude or ChatGPT to use your product on a customer’s behalf (an MCP server), with the same permissions and limits as your API.

How it starts

One feature first, measured on real use.

Model usage is billed to your own AI account, with a spending cap, so you always see what it costs.

Who it is for

For products with real users and real questions

A good fit

  • You have a live product, real users and real questions.
  • You want answers from your own docs and data, with sources.
  • You want AI costs you can see and cap.

Not a fit yet

  • A demo for next week?

    We build features that work after the demo, which takes longer than a week.

  • AI changing data on its own?

    We do not build AI that changes customer data or billing with nobody checking.

  • A handful of users?

    Answer them yourself for now; it teaches you what the AI should do.

How it runs

One feature first, measured, then the next

  1. Step 01

    Look at your product and questions

    We read your docs, your data model and a sample of real user questions, and pick the one feature users will use most.

  2. Step 02

    Build the first feature

    It answers from your data with sources, respects each user’s permissions and has a spending cap. It is tested on real questions first.

  3. Step 03

    Measure it on real use

    Every answer is logged: what it got right, where it handed over and what it cost to run.

  4. Step 04

    Extend it and keep it running

    Search, drafts or an MCP server come next. We run the AI with the rest of the product.

FAQ

Questions SaaS teams ask before adding AI

It answers only from the docs and data you connect, shows the source and says when it does not know. Where a wrong answer would matter, it hands over to a person. We test it on real questions before any user sees it.
No. The AI only reads what the signed-in user is allowed to see, using the same permission checks as the rest of your product.
We can switch between several providers, billed to your own account. We pick per feature on quality, cost and where your data may be processed.
Every call is logged with its cost and there is a spending cap, so you see the cost per feature before it surprises you.
It is a standard way for AI assistants to use your product on a customer’s behalf. You need one when customers ask to connect their own assistant; we built one for AuditSocials.

Recognise your situation on this page?

Tell us what you run and where it hurts. An engineer will talk it through with you and say what the next step is.

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