If you're careful about third-party tools, good. Here is exactly how Warfarmer gets its information, in plain words, so you can decide for yourself.
These are fixed rules, not settings.
All of it read-only.
Overwolf provides these; Warfarmer only receives what Overwolf passes on:
Chat is kept only while Warfarmer is open. It's never saved to a file and never sent anywhere.
The game writes a log (EE.log). Warfarmer reads it but never changes it. Once an overlay or the whisper assistant's screen reading has been on (they're on by default), it also reads the same lines live as the game writes them, through Windows' standard debug-output channel, until Warfarmer closes.
That's how it knows when you trade, open a relic, or reach a screen an overlay reacts to.
Only while the game is in front, and only on these screens:
The text is recognised on your PC by Windows itself, and the picture is deleted once it's read; it never leaves your PC. What was read (an item's name, a riven's stats, a player's name) can then be looked up on warframe.market, for prices or a public profile. Each overlay can be turned off.
While the whisper assistant is on and Warframe runs, Warfarmer registers Ctrl+Alt+W with Windows. Warfarmer receives that key press (the game doesn't), and nothing is sent to the game.
Only what you choose.
You sign in on warframe.market's own page, so Warfarmer never sees your password. Your sign-in is stored encrypted by Windows, and signing out removes it.
Whispers and replies are copied to your clipboard when you click. You paste them into the game yourself.
It stays on your PC.
Your inventory, history, trade ledger and settings are saved in Warfarmer's own folder on your PC. Warfarmer talks only to the services it needs: Overwolf, warframe.market, Digital Extremes' public data, and a few others for pictures and news. Requests to warframe.market, riven.market and the game-data services say they come from Warfarmer. The privacy notice lists every one of them and what's sent.
Bug reports send nothing by themselves: Help › Report a bug shows you everything it would attach first.
We won't promise what we can't.
Warfarmer is built to stay well away from what Digital Extremes treats as cheating: no memory reading, no input to the game, no file changes. But DE doesn't approve or endorse any third-party app, and its support article says:
"If you use external software in conjunction with Warframe, then you do so at your own risk."
Read DE's article yourself and decide.
Ask in the Discord or email candietech@skyie.fans. If something here is ever wrong, it's a bug, and we'll fix it.