How Does Fira Work?
Fira is a fixed-rate lending protocol within the Usual ecosystem that enables zero-rate borrowing of USD0 stablecoins against bUSD0 (bond USD0) collateral. With $434M in TVL concentrated almost entirely in bUSD0, it serves as Usual's protocol-owned credit primitive, keeping lending revenue internal to the ecosystem rather than relying on external lending partners.
TVL
$11M
Sector
Lending
Risk Grade
C+
Value Grade
D+
Core Mechanisms
Lending/Fixed-Rate
NovelZero-rate fixed-rate lending enabling USD0 borrowing against bUSD0 collateral without interest charges
Core innovation: protocol-owned credit primitive offering zero-rate borrowing. Internalizes credit that previously required external partners. Part of Usual's economic perimeter. Governed by Usual DAO.
Bond/Zero-Coupon
bUSD0 reframed as zero-coupon bond with maturity-based mechanics replacing earlier complex token mechanics
bUSD0 serves as the primary collateral asset. Zero-coupon bond structure simplifies earlier governance-token-heavy models. Maturity-based instrument replacing complex yield tokenization.
Stablecoin/RWA-Backed
USD0 stablecoin backed by real-world assets issued by Usual protocol
USD0 is the borrowable asset and the stablecoin output. Backed by RWA collateral held by Usual. Fira enables capital-efficient USD0 strategies.
Governance/DAO-Owned
Protocol-owned credit system governed by Usual DAO with parameter control
Fira is protocol-owned by Usual, not an external lending market. Revenue stays within Usual's economic perimeter. Parameters controlled by governance.
Vault/Collateral
UZR vault accepting bUSD0 deposits as collateral for USD0 borrowing
Single-vault design focused on bUSD0 collateral. Simple collateral management with maturity-based mechanics rather than liquidation-heavy approaches.
How the Pieces Interact
With ~99% of TVL in bUSD0, Fira has extreme single-asset concentration. A USD0 depeg or bUSD0 devaluation would simultaneously impair all collateral and the borrowed asset, creating a reflexive collapse dynamic.
Zero-rate borrowing incentivizes recursive leverage strategies (deposit bUSD0, borrow USD0, buy more bUSD0). In a stress event, unwinding these levered positions creates cascading selling pressure on USD0 and bUSD0.
As protocol-owned credit, Fira's risk parameters are set by Usual governance. Political dynamics within the DAO could lead to risk parameter changes that prioritize growth over safety.
bUSD0 has maturity characteristics while Fira lending may not enforce matching durations. A wave of redemptions at bUSD0 maturity could create liquidity stress in the lending vault.
USD0's value ultimately depends on Usual's off-chain RWA collateral quality. Fira inherits all RWA counterparty, custody, and regulatory risks from the underlying Usual protocol.
What Could Go Wrong
- Fira's $434M TVL is almost entirely concentrated in bUSD0 (Usual's bond token) — a single-asset dependency where any bUSD0 devaluation or Usual protocol failure would wipe out the vast majority of collateral value.
- As a zero-rate lending primitive, Fira enables capital-efficient borrowing against bUSD0 without interest charges, creating leverage incentives that could amplify losses during a USD0 stress event.
- Fira launched in December 2024 with limited production history — the protocol has only ~14 months of operation under varying market conditions and has not been tested during a major DeFi stress event.
USD0 Depeg Triggers Reflexive bUSD0 Collapse in Fira
ModerateTrigger: A loss of confidence in Usual's RWA backing or a regulatory action causes USD0 to trade below peg, triggering a reflexive collapse of bUSD0 collateral in Fira.
- 1.Usual's RWA backing faces scrutiny due to counterparty default or regulatory action against underlying assets — USD0 begins trading at a discount to $1 as holders seek to exit
- 2.bUSD0 value drops as its underlying USD0 claim loses value; Fira collateral ratios deteriorate rapidly — Levered positions in Fira become undercollateralized simultaneously across all borrowers
- 3.Borrowers rush to repay USD0 loans and exit bUSD0 positions, but low liquidity makes exit difficult — Bad debt accumulates in Fira as collateral value spirals below loan values
- 4.Usual DAO faces existential governance crisis as protocol-owned credit system generates losses — Permanent impairment of Fira TVL; Usual ecosystem confidence severely damaged
Risk Profile at a Glance
Overall: C+ (38/100)
Lower score = safer