Protean Rates
Type your currency and get a straight answer. Every number carries the date it was true and where it came from, and where the honest answer is "nothing good yet", the page says exactly that.
FX spot and venue funding load live in your browser.
| Currency | Live FX | Earn natively | Fair dollar route | At today's venue price | The short version |
|---|---|---|---|---|---|
| BRL Brazilian real | . | 12.76% | no benchmark yet | no venue | native only |
| MXN Mexican peso | . | 5.54% | no benchmark yet | no venue | native only |
| EUR euro | . | 3.46% | 2.07% | -3.93% | earn it natively |
| AUD Australian dollar | . | nothing yet | 4.32% | -1.07% | nothing good yet, honestly |
| CAD Canadian dollar | . | nothing yet | 2.01% | -3.92% | nothing good yet, honestly |
| CHF Swiss franc | . | nothing yet | -0.55% | -7.73% | nothing good yet, honestly |
| GBP British pound | . | nothing yet | 3.64% | -1.75% | nothing good yet, honestly |
| JPY Japanese yen | . | nothing yet | 0.56% | 0.46% | nothing good yet, honestly |
| NZD New Zealand dollar | . | nothing yet | no benchmark yet | -3.69% | nothing to compare yet |
| SEK Swedish krona | . | nothing yet | no benchmark yet | 3.33% | nothing to compare yet |
| SGD Singapore dollar | . | nothing yet | no benchmark yet | -5.35% | nothing to compare yet |
Sorted by native yield; click a column header to re-sort. Dates under each figure say when it was last read and flag themselves once past the tolerance we hold that kind of number to.
How to read it. "Earn natively" is the best yield in your currency itself, permissionless, no account. "Fair dollar route" is dollar yield minus the fair cost of removing the currency risk, priced off the interbank forward, the rate banks charge each other for exactly that trade (a desk would call it the 3M forward points). "At today's venue price" is the same position at what the on chain venue actually charges right now, live. The gap between the last two is measured daily on the fairness page.
The dollar benchmark under every synthetic number: Aave V3 Base USDC supply APR at 3.56%,
read , source. The interbank forward figures
are hand read from published forward tables and refreshed on a slower cadence than the live
feeds, which is why their date sometimes flags itself; a flagged date is the site being honest,
not broken. The full curve at every hedge ratio is at /v1/compare/, the same
engine answers parameterized questions at /api/compare, and the raw venue record
is at /v1/fairness.json. Live spot comes from Pyth's FX feeds in your browser and
is a reference price, not a tradeable quote. USD/SEK has no Pyth feed, so SEK shows no live
spot.
If you run or know an instrument that pays yield in a non dollar currency and belongs on this shelf, tell us. If it is real, permissionless and verifiable, it gets listed with your source on the row. If its transfer terms are unpublished, we will tell you exactly what disclosure would get it listed.
rates@protean.finance