The exchange, weighed.
Arbiter watches the whole Path of Exile 2 currency market and surfaces what's worth trading — the opportunities, the currency that actually fills, the route that pays. Everything is also gold-adjusted, because gold, not margin, is what really limits how much you can trade.
Margin % lies.
Gold doesn't.
Every trade on the PoE2 exchange burns gold, and the burn scales with the value you move — a route through big denominations can quietly cost a tenth more once the gold is counted. Two spreads can both read "10%". If one eats four times the gold, it pays a quarter as much per map you can afford to farm.
Arbiter folds the gold cost into every figure it shows. The headline stat is never margin. It's Divine per 100k gold: profit per unit of the resource that actually limits how much you can trade.
Six ways the market slips.
One screen that catches them.
Computed on our servers from whole-market data, refreshed continuously, and ranked gold-adjusted. You glance, you verify at the exchange, and you trade.
Best Trade-Ups
Wide, liquid spreads worth making a market in — post the buy, post the sell, collect the gap. Ranked by Div / 100k gold.
Movers
Currencies rising or falling fast on real volume — the riskier, momentum kind, not steady spreads, and labeled that way.
Cross-Hub Mispricing
The same currency priced cheaper through a different hub. The gap, gold-adjusted, before the market notices.
Underprice Watch
Items resting far below value. Park a catch-buy where mistakes land and let someone else's slip pay for your maps.
Item Lookup
Liquidity, spread, trend, and which currencies a thing actually fills in — so you never get stuck holding the illiquid side.
Markets
Your own observed history, kept locally readable: green when a market sits below your median — cheaper than usual, for you.
The Loot Valuer Beta
Separate from the radar: this one reads your own inventory, not the market. Drop a post-map screenshot, or let it watch your game log and value each haul as you return to your hideout.
It names your stackables, quotes the total, and marks every detection verified or unverified. It's the single feature still in beta, and it says so instead of guessing quietly. Teach it a correction and it keeps it.
The Flip Calculator
While you browse the exchange, Arbiter keeps your own market reads. Pro chains them into gold-efficient loops that end in a Divine: what to post, what to take, the exact ratios, and what each rung pays — from take-it-all-now to post-everything-and-wait.
- The latest snapshot — you see it the moment we fetch it.
- The Flip Calculator — loops from your own reads, priced at every rung, with the profit answer at a glance.
- Worth it, at a glance — every loop measured against your bar, in Div / 100k gold.
Free is honest.
Pro is current.
The standard market-data deal: everyone gets the whole radar; Pro sees the latest snapshot, Free the one before.
- The whole radar, one snapshot behind
- Trade verdicts and the sell check, on every read
- Loot Valuer (Beta) with auto-track
- Item Lookup & your local Markets history
- The latest snapshot, not the one before
- The Flip Calculator from your own reads
- Worth-it loops flagged against your bar
Billing runs through Stripe; we never see your card. Cancel in one click from the billing portal and Pro simply lapses at the period's end.
Built to be defensible.
A trading companion lives or dies on trust — with you, and with the game it sits beside. These lines are architectural, not promises in a README.
Asked first, answered straight.
Is this allowed under GGG's Terms of Service?
The line that matters in policy and practice is automation — and Arbiter doesn't cross it or lean on it: no input injection, no botting, no reading game memory, no acting on your behalf. It reads your screen (pixels you're already looking at) and public market data, and every trade is made by your hands. The full posture, including the one narrow file exception (the plain-text event log the game writes for companion tools), is public here. Arbiter is not affiliated with Grinding Gear Games.
Does it touch the game's memory, process, or files?
Memory and process: never. Files: one, optionally — if you enable map auto-tracking, it
follows the game's own plain-text Client.txt event log (read-only) to notice when you
return to hideout. That log never leaves your machine.
What leaves my machine?
A few things, only to your own account and only to answer your own requests: your Arbiter sign-in token; the market read in front of you (to compute your verdict); and your recent market observations (to build your Flip Calculator and check the best currency to sell in). Your inventory screenshots never leave your machine. More detail in the trust posture.
What do I need to run it?
Windows 10/11 and Path of Exile 2. The screen-reading features (trade verdicts, Loot Valuer, sale tracking) need your display at 1920×1080; other resolutions are in the works, and the dashboard itself runs at any size. Download the installer, run it, and sign in with your email. No admin rights needed.
What does it cost?
The free tier is the real product, one snapshot behind, not a trial. Pro shows the latest snapshot and adds the Flip Calculator at the price shown above. Stripe handles billing; cancel anytime and it lapses at period end.
Who builds this?
A solo developer who trades the PoE2 exchange daily and built the tool they wanted for it. Not affiliated with or endorsed by Grinding Gear Games.
Weigh your next trade.
Install, sign in, trade. The radar is free. Bring only the gold you were going to burn anyway.