For JUDLEX to read the papers in a case file, it needs a key from an artificial intelligence provider. The key is like the key to an account you open with the provider yourself: JUDLEX uses it to send the provider the pages so it can read them.
Why the key belongs to your firm
The account is yours. You open it with the provider of your choice, with your own card, and the provider bills you for the reading directly, at its price and on its invoice.
JUDLEX charges no margin and takes no part in that payment. The only thing you pay us for is the licence.
What is read goes straight from your computer to the provider. It does not go through any server of ours.
The key is stored on your computer, in a file belonging to your firm, and it does not travel to any server of ours.
Without a key, JUDLEX still sorts, numbers and foliates just the same, because that is arithmetic and needs nobody. What it cannot do is read a paper.
Which providers it supports
JUDLEX comes prepared for Anthropic (Claude), OpenAI (ChatGPT), Google (Gemini), xAI (Grok), DeepSeek and MiniMax. You can have keys for several at once and choose which one is used at any time; for example, a powerful model for difficult case files and a cheaper one for volume.
You can also use one that is not on that list, such as NVIDIA, OpenRouter or a server of the firm's own. In Settings → Connections, click Add provider → Custom…, paste its API address and its key, and choose its models. Which address to type and the rest of the steps are in Add an AI provider that is not on the list.
Where to add it
In your account menu, at the very bottom of the sidebar, open Settings → Connections. At the top is the Your AI keys section, with one card for each provider on the firm's list. At first the list only has Anthropic; if you want to use another, add it with Add provider and its card will appear.
If you already have the key, paste it into that provider's API key field and click Save. If you do not, click I have no key — walk me through it on the card of the provider you prefer and follow the assistant.
The assistant, step by step
The assistant has six steps. You can go back at any time with Back.
What a key is
The first step explains the same thing as this article: that the account is yours and that the provider bills you for the reading. It warns you that it will take a few minutes and that you only have to do it once.
Choose the model and read how it is billed
Choose the model you want to start with. Underneath is what you need to know before using the key: the provider bills you for the artificial intelligence, at its own prices; JUDLEX charges nothing for it and takes no percentage; and it is wise to set a spending limit on your provider account. The link with the provider's name opens its pricing page. You can change model whenever you like.
Open the provider s page
Click Open the … page, which carries the provider's name, and the page opens in your browser. There:
Create an account, or sign in if you already have one.
Add a payment method. Almost all of them ask for a card before letting you use their service, even if they charge nothing up front.
Look for the button to create a key (it usually says "Create key" or "API key") and copy it.
Copy it as soon as it appears: almost all of them show it only once.
What to click on each provider's page is in Getting the key from each provider.
Paste the key
Paste the key into Paste the key here. With the eye icon you can see it to check it. If it does not start the way that provider's keys usually start, JUDLEX warns you, but lets you carry on: the test in the next step is what counts.
Test it
Click Test the key. JUDLEX asks the provider for a minimal response using that key, which is the only way to know it really works. It will cost you a fraction of a cent, billed by your provider.
If something fails, you can Paste it again, Pick another model or Test again, and see what the provider replied to find out what is wrong.
Done
Click Save and get started. The key is stored on your computer, JUDLEX will use it with the model you chose, and it notes that you have read how the artificial intelligence is billed.
Several keys, and which one is in use
Each provider card has:
Model, to choose which one you work with.
Use this one, to make it the provider JUDLEX uses. The active one says In use.
Test, to check that the key and the model still work. With most providers it costs nothing; with those that do not allow it, it costs a fraction of a cent and the screen tells you so.
A link to the provider's pricing page, which is the one that counts.
A button to delete the key. If you delete the key of the provider in use, analysis will not work until you add another one or mark another provider with Use this one.
In the three-dot menu, Remove from the list, which removes the provider and deletes its key as well.
How it is billed, and where to see what you have spent
Once a key is in place, JUDLEX shows you How the AI is billed once and asks you to click Got it. If you added the key with the assistant, you have already read it in the second step and it does not come up again. Until it has been accepted, JUDLEX does not call any provider.
JUDLEX does not tell you what something will cost before you click: the provider sets the price and sends the invoice. What each button does tell you is that it uses artificial intelligence and how much it will send (documents, pages), and the heavier work, such as splitting or analysing, waits until you ask for it.
What you have spent is then under Settings → History, worked out with each provider's public rates and with no mark-up. The figure is a guide: it shows you how your key is doing, not a way to reconcile the provider's invoice, which is the one that counts.