First Version
£0 build feeWe select a few ideas with one clear user and one useful workflow to show what LumenFlow can do. We agree what it will do and when you will get it first. There is no build fee; you approve any hosting or paid API costs.
From the people behind LumenFlow
Tell us what needs to work. We'll build it.
Bring an idea, a job your team still does by hand, or software that's stuck. We shape, build, test and launch the first useful release. LumenFlow is the system we built to put AI agents to work quickly, with each tool call it governs checked against the job's limits. You make the key decisions. We do the work and hand over the custom code.
Tell us about your project
selected small first versions have no build fee
Where are you starting?
Start wherever you are.
01 · I have an idea
Tell us the problem. We'll build the answer.
A few sentences are enough. We turn them into a clear first version, agree what success looks like, then handle the design, code, testing and launch. You make the important decisions; we do the work.
selected small projects · one agreed workflow
Product Definition
£1,500–£3,000For a larger idea, we map the key user flows, technical approach, first release and build estimate. Take the plan to us or anyone else.
Product Build
£15,000–£80,000We build, test and launch the agreed release. You approve it against clear acceptance criteria and receive the custom source code.
02 · Fix or finish what's started
Let's get it working, then get it moving.
Start with a free Rescue Check. We read the code and configuration, never your live data. Within 3 working days of getting code access, you get a written answer: keep, harden or rebuild, with the next steps in order.
How the Rescue Check works →Rescue Check
FreeA written report: the verdict with its reasons, the biggest risks in order, and what fixing them would take.
Rescue
£1,500–£8,000We fix the agreed problems and get the software ready to use, at a price and date agreed from the report before we start.
Live LumenFlow check
See a real check behind the build.
The booking screen above is a browser sample. Separately, imagine we assigned an AI worker to build that feature. Pick a tool request it might make. The real LumenFlow kernel checks a sample policy live and returns what the job would allow, pause for approval or deny.
This evaluates three fixed sample requests. It does not generate code, run a tool or demonstrate the separate Linux sandbox.
Job: build booking changeslive check
Choose a request above.
You'll see the kernel's decision before any tool could run.
This live check only evaluates permission. It runs no tools, changes no code and publishes no release.
The system behind the service
Fast work, with a system we built ourselves.
- 01We define the jobWe agree what the first useful release needs to do, how you will judge it and when you will get it.
- 02LumenFlow keeps work in boundsIts kernel checks each governed tool request against the job's scope and rules before execution. On supported Linux machines, subprocess tools run inside an operating-system sandbox.
- 03We check what gets builtWe run checks chosen for your project and review the software against the agreed job. LumenFlow writes evidence traces of governed calls and reports failures to record them.
- 04We launch itWe put the agreed release into use, hand over the custom code and show you how to take it forward.
We use LumenFlow while building LumenFlow and LumenFlow Cloud. Its kernel checks each governed tool request before the tool runs. We bring that system to your project and run it for you.
See LumenFlow →Plain terms
No small print to find later.
- The custom code is yours.Free build or paid, you receive the custom source code and access we create for you.
- You get a clear handover.We agree the code, access, documentation and any project evidence you will receive before we start.
- Prices are agreed first.Scope, price and date are set in writing before work starts.
- Ongoing help is optional.Updates and small changes after launch, typically £300–£1,500 a month, quoted to your needs.
Good questions
A few things you may be wondering.
Can I come with only an idea?
Yes. You do not need a spec, prompt, prototype or existing app. Tell us who it could help and what you hope it will do. We can work out the first useful version together.
What is free, and what is paid?
The first conversation and the Rescue Check are free. We also select a few small ideas for a First Version with no build fee for one agreed workflow. You cover any agreed third-party costs, such as hosting or paid APIs. We share your project publicly only with your separate permission. Other work is priced in writing before it starts.
Do I need to use LumenFlow?
No. LumenFlow is our delivery system. We set it up, run it and manage the work. You tell us what you want, make the key decisions and receive the finished software.
How is the AI work kept in check?
LumenFlow checks a governed tool request against the job's rules before that tool runs. On supported Linux machines, subprocess tools run inside an operating-system sandbox; other built-in operations enforce the authority LumenFlow gives them. The evidence store attempts to record requests and results and reports trace write failures. We agree your project's controls and review its release against the job you approved.
How quickly can you deliver?
We aim for the smallest useful release first and show you working software as it takes shape. We give you a delivery date for your build in writing before work starts. A Rescue Check arrives within 3 working days of code access.
What do I own at handover?
You receive the custom source code and access we create for your project, whether the agreed build is free or paid. The written agreement spells out those rights and identifies any third-party or pre-existing components and their licences before work begins.
Who is behind hellm.ai?
hellm.ai is Hellmai Ltd, a UK software company. We make LumenFlow and LumenFlow Cloud, and use them in our own work.
Start here
What should we build for you?
A few lines are enough. Tell us the idea or what your existing software needs to do. A person reads it and replies.
Prefer your own email? Write to hello@hellm.ai.