FRXUSD/USD price feed
Frax has issued four symbols people mix up: FRAX, FXS, sfrxUSD, frxUSD. Public sources demonstrably confuse them. This page prices the last one, the fiat-redeemable dollar the family now leads with; the rest of the household keeps feeds of their own in this catalog, each measured the same way.
Aggregate on-chain rate: hourly view of the last 4 weeks. The API itself updates block by block. Request API access
Book composition · auto-observed
The top pool leads without dominating at present, with the balance spread over several chains.
Four symbols, one family, sorted here
The confusion is easy to document: quote pages describe frxUSD as a rename of the governance token, question boxes answer with an unrelated project, searches for this dollar surface prices for its siblings. Anyone researching the Frax stable ends up holding four names and no map.
Here is the map, stated plainly. FRAX is the original dollar, still trading, with a feed of its own on this site. FXS is governance, not a dollar at all. sfrxUSD is the savings wrapper whose price climbs as yield lands. frxUSD, priced on this page, is the current flagship: minted against treasury-backed reserves, redeemable, meant to hold one dollar.
The data layer adds the live version of that map: where family members trade against each other, those crosses enter this book as measured weights. The sorting is not editorial; it is measured, refreshed as the market moves.
A handover you can watch
Generational handovers in stablecoins happen pool by pool: liquidity providers retire venues quoted in the old dollar, seed venues in the new one, the weights shift accordingly. This book carries that migration as it stands, mid-stride, at whatever weights the week's liquidity has set.
A young flagship gets priced mostly by its peers, other protocol dollars vouching for it cross by cross. Each leg clears through its own dollar market before anything reaches this page, so nothing another token earns or loses masquerades as movement here.
Where the book sits between chains is the weekly refresh's story to carry; if the handover keeps spreading, the composition will widen on its own without anyone rewriting this page.
A treasury-backed dollar, measured at market
frxUSD's design promise is the strong kind: backed by tokenized treasuries, redeemable for fiat. Design targets still meet markets. The venues above pay what they pay, a breath from par most days; when that gap widens, a book like this is where it shows first.
A young flagship also carries family history. Holders comparing it against FRAX or the savings wrapper can put three of this catalog's feeds side by side, the whole household under one methodology, each level pinned to its own block.
Four symbols will keep confusing quote pages; measurement keeps them filed where they belong.
Who runs on this rate
Treasuries migrating FRAX to frxUSD
Desks moving between generations can watch both legs of the handover priced side by side, each from its own market.
Risk desks with Frax ecosystem exposure
Four related assets, one methodology: the flagship here, the predecessor plus the savings wrapper on their own feeds, all block-pinned.
Credit desks weighing protocol-dollar collateral
When protocol dollars price each other, the crosses themselves are informative; the composition shows which dollars currently vouch for this one.
Where the FRXUSD market lives
Active FRXUSD/USD pools per chain, as observed by the feed on 2026-10-27.
FRXUSD in the catalog
6 pairs, each computed from its own pools with the same methodology:
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