# Free tools

> Justas Butkus is a fractional AI officer based in Vilnius, Lithuania, founder of AINORA, MB – the company behind the Ainora and Impetora brands – and a graduate of Vilnius University.

Justas Butkus is a fractional AI officer based in Vilnius, Lithuania, working with mid-market companies and scale-ups across the UK, EU and US. He publishes free tools for buyers evaluating AI work, and takes no commission, referral fee or revenue share from any vendor.

**Two small tools for the moment before you commit money: one checks a vendor's language for claims worth challenging, the other tells you whether your problem is specific enough to build at all. No sign-up, no email, and nothing leaves your browser.**

Canonical: https://justasbutkus.com/tools/
Last updated: 2026-08-02

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## What is here?

- **Vendor red-flag checker** – Paste a pitch or proposal. Returns the specific claims worth challenging and the question to ask about each. (/tools/vendor-red-flag-checker/)
- **The one-sentence test** – Describe your problem in one sentence. Tells you whether it is a project yet, and exactly what is missing if not. (/tools/one-sentence-test/)

## Why no sign-up?

Because a tool that will not run until you give it an email address is a lead form wearing a tool costume, and this audience recognises the difference immediately.

Both run as plain JavaScript in your browser. There is no server call and no storage, which matters because one of them asks you to paste a supplier's proposal.

## Frequently asked questions

### Do these tools require an email address?

No. No sign-up, no email, no gate. They run in your browser and nothing is uploaded or stored.

### Do they use AI?

No. Both are deterministic checkers matching against maintained lists. Describing a pattern matcher as AI, on a site about spotting AI overclaiming, would be self-defeating.

## Related

- [Answers](/answers/) – Written answers to the decisions these tools sit next to.
- [How to choose an advisor](/how-to-choose/) – The questions worth asking, including the awkward ones.

## About the author

**Justas Butkus** – a fractional AI officer based in Vilnius, Lithuania, founder of AINORA, MB – the company behind the Ainora and Impetora brands – and a graduate of Vilnius University.

## If a tool surfaced something

The answer pages go deeper, and they are free too. If you want a second opinion on a specific case, get in touch.

Contact: justas@ainora.lt · [LinkedIn](https://www.linkedin.com/in/justas-butkus/)