Fei Protocol
Fei Protocol was an Ethereum-based decentralized finance (DeFi) protocol that launched in April 2021, introducing FEI, an algorithmic stablecoin backed by Protocol Controlled Value (PCV), alongside the TRIBE governance token. Founded by Joey Santoro, it merged with Rari Capital in December 2021 to form the Tribe DAO. Following the April 2022 Rari Fuse exploit, the Tribe DAO voted to wind down and dissolve the protocol later that year. Fei Protocol was backed by a16z (Andreessen Horowitz), Framework Ventures, and other investors. Its smart-contract code and documentation remain public on GitHub, but the protocol is no longer operational and its web properties (fei.money, docs.fei.money) are offline. Fei Protocol is an on-chain smart-contract system and exposes no public REST/HTTP API, so it carries no OpenAPI, SDK, or hosted API artifacts.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
Fei Protocol is tracked in the API Evangelist network. This page is the human-readable profile that sits on top of the machine-readable index we maintain at apis.io.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Fei Protocol scores 7.4/100 (minimal), with a separate agent-readiness read of 0/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
Resources
Every other property we hold for Fei Protocol — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Build 1
SDKs, sample code, and the tooling you integrate with
Fei Protocol is in the network as a tracked entity. We haven't yet indexed a public API surface for it — when one is published, the artifacts, score, and agent-readiness read will appear here automatically. The source repository is where that profile is built.
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