Opviera Harness
An AI that works on your files, not just talks about them.
Point it at a folder of documents, spreadsheets, notes, a website or code, then ask for what you want. It reads what is already there, makes the changes, and writes new files. Only inside that folder, never anywhere else.
There is nothing to set up. Choose the folder, paste the key your administrator gave you, and start.
Download Opviera Harness
Version 0.1.3 · macOS on Apple Silicon · 228 MB
Signed and notarized by Apple, so it opens like any other Mac app. Drag it to Applications and go.
What it actually does
Most AI tools answer questions and leave the work to you. This one gets on with it, on your actual files.
Opens and edits your files
It reads what is in the folder, changes what you ask it to change, and writes new files. Everything else it leaves alone.
Works across many files at once
Ask for something that touches fifty files and it will work through all fifty, keeping track of what is done and what is still to do.
Shows its plan first
Before anything substantial it tells you what it means to do, and waits for you to say yes.
Stays inside the folder
The folder you pick is the boundary. It cannot see or change anything outside it, and it asks first before doing anything it cannot undo.
You do not have to be a developer
It started life as a tool for engineers and it is still very good at that. But a folder of files is a folder of files, and these are all things people ask it for every day.
Documents and admin
- →“Rename every invoice in here so it starts with the date, then the supplier.”
- →“Read these twelve reports and write me a one-page summary.”
- →“Turn my notes into a proper proposal, keeping my wording.”
Data and spreadsheets
- →“Pull the totals out of these CSVs into one sheet.”
- →“Find the rows that do not add up and tell me why.”
- →“Clean up the addresses so they are all in one format.”
Building things
- →“Add a contact form to this website and make it match the rest.”
- →“Work out why this is broken and fix it.”
- →“Write the tests for everything in this folder.”
When a job needs it, the assistant can also run commands for you: installing something, converting a file, starting a preview of a site. It always shows you the command first and waits for you to approve it.
All downloads
Version 0.1.3. The macOS builds are signed and notarized by Apple.
| Platform | File | Size | |
|---|---|---|---|
| macOS · Apple Silicon M1 and later, macOS 10.15+ |
.dmg | 228 MB | Download |
| macOS · Intel Pre-2020 Macs, macOS 10.15+ |
.dmg | 240 MB | Download |
| Windows Windows 10 and later · not code-signed yet |
.exe | 122 MB | Download |
The Windows build is not code-signed yet, so Windows shows a SmartScreen warning the first time you open it. Choose More info, then Run anyway. The macOS builds are signed and notarized by Apple and open normally. Questions? Get in touch.
What you need
- →An Opviera key (
vsk_…) from whoever administers your organisation. - →A folder to work in. Anything at all. It does not have to be code.
There is no account to create here and nothing to configure. Your administrator chooses which AI models the key can use and how much it can spend. The app checks with Opviera every time you open a folder, so if they change something you get it straight away without signing in again.
Prefer the terminal?
Opviera CLI gives you the same thing from a command line, if that is where you would rather be:
curl -fsSL https://opviera.ai/install | bash
It works with Claude Code, Codex and opencode too. See how it works.