Fei USD
FEI
Evaluation Score
Overall rating on a scale of 0-10
Dimension Breakdown
AI Analysis
Comprehensive evaluation of the token
Fei USD (FEI) is an algorithmic, collateral-backed stablecoin that has transitioned into a legacy and largely dormant protocol. While it holds a foundational engineering history with comprehensive audits by ConsenSys Diligence and OpenZeppelin, development activity has completely ceased with zero upgrades or proposals over the past 12-18 months. Organic community engagement and DAO governance have completely evaporated. The tokenomics and market standing reflect an inactive asset, characterized by a contracted market capitalization (~$3.6M), near-zero trading volume, and negligible liquidity. The security profile is marred by a catastrophic ~$80 million reentrancy exploit on the merged Rari Fuse pools on April 30, 2022, alongside early design instability. Note: The Team and Governance section lacked sufficient verifiable data (-1.0) due to search results pointing to unrelated entities, and its weight was redistributed across the remaining sections. Given the protocol's deprecation and lack of maintenance, FEI presents extreme risks.
Development Activity
Code updates and developer engagement
Community Support
Social media presence and community engagement
Tokenomics
Supply, distribution, and utility
Market & Use Case
Value proposition and competitive landscape
Team & Governance
Team background and project governance
Security & Audits
Security history and audit status
About Fei USD (FEI)
Fei USD (FEI) is a legacy and deprecated algorithmic stablecoin on Ethereum that was issued by Fei Protocol and has transitioned into an inactive state. The protocol was designed to maintain a $1.00 peg using an elastic mint and burn model driven by an ETH-denominated buy-only bonding curve and Protocol Controlled Value (PCV). Despite an established engineering history with early audits conducted by ConsenSys Diligence and OpenZeppelin, the project has ceased active development, showing zero releases, upgrades, or governance proposals for over 12 to 18 months.
Throughout its operational history, the protocol encountered severe design and security challenges. Shortly after its 2021 launch, the token experienced depeg stress and liquidity constraints under its direct-incentive model, which left many holders temporarily unable to sell. In early April 2022, a vulnerability identified through a bug bounty prompted the protocol to shut down its rebate program prior to any loss of funds. On April 30, 2022, following Fei Protocol's merger with Rari Capital in December 2021, an attacker exploited a reentrancy vulnerability in Rari Fuse lending pools, leading to a loss of more than $80 million. Although Fei Protocol offered a $10 million bounty for the return of funds, the incident resulted in significant financial damage across the merged ecosystem.
FEI currently functions with heavily reduced market activity, maintaining a contracted supply and a market capitalization of under $4 million. The token continues to trade near its nominal peg on Ethereum, but exhibits severely depressed trading volume and an absence of active community governance or protocol maintenance.