Research
May 2026 Onchain Yield Report
Onchain yield moved slightly lower over the last month. The USD benchmark ended the period at 3.52%, versus 3.80% 30 days earlier. The ETH benchmark ended at 2.28%, versus 2.57% 30 days earlier.
vaults.fyi
The app for earning onchain — discover yields, deposit funds, and track positions in one place.
Case Studies
Otus: a Smart Yield Account Powered by vaults.fyi
For Otus users, Smart Yield turns stablecoin yield into one simple experience. Behind the scenes, our API helps Otus access DeFi yield across protocols, keep funds productive, and track what each user is earning.
Changelog
May Changelog: Borrow API, Refreshed App Pages, and x402 Agent Payments
In May, we added borrow features into our API, added share price charts in the app, and made vaults.fyi easier for agents to use through x402. We also added new portfolio history endpoints, coverage for Liquity, and PAYGO access for our API.
Blog
Add yield to your stablecoin product with vaults.fyi
Yield is becoming a feature users come to expect, and the market delivering it is evolving quickly.
Case Study
heyAura × vaults.fyi: from yield discovery to deposit, in one flow
heyAura is using vaults.fyi to bring DeFi yield discovery and non-custodial execution into its product. Through one integration, heyAura users can surface risk-scored opportunities for idle assets, compare existing positions against alternative strategies, and generate the transaction payloads needed to move capital between protocols with a single
Partnerships
DeFi yield for Openfort embedded wallets
The vaults.fyi recipe gives Openfort apps DeFi yield in one API: discover vaults across 80+ protocols, deposit through the embedded wallet, and earn revenue share on what users deposit.
Partnerships
Introducing Arbitrum Earn, powered by vaults.fyi
Arbitrum Earn is now live in the Arbitrum Portal, powered by vaults.fyi. Discover and access yield across Aave, Morpho, Fluid, and more, without leaving the Portal.
The vaults.fyi API is now open with pay-as-you-go access
vaults.fyi Developer Portal is now open to everyone - you can sign up, create a key, and start making calls.
Partnerships
Yield tools for Zerion CLI
Seven vaults.fyi skills are now live in Zerion CLI for coding agents. The vaults.fyi skills package yield research, deposit flows, rebalance flows, and risk monitoring functions into commands an agent can run alongside Zerion's wallet primitives. We are excited to work with vaults.fyi as our
MCP
Onchain yield tools for any AI agent
The vaults.fyi MCP server exposes 38 tools to any MCP-compatible client (Claude Desktop, Cursor, Cline, your own agent). With our MCP, an agent can query live data on 1500+ vaults across >20 networks, pull multi-year historical time series, find the best yields on a given asset,
MCP
How to get DeFi yield benchmarks
Benchmark rates tell you what the average yield environment looks like for stablecoins (USD) or ETH on a given chain. They're the baseline you compare individual vaults against, and the input you'd hand to an agent making a "should I rotate?" decision. What'
Changelog
April Changelog
In April, we shipped Reputation Score upgrades, seamless cross-chain deposits, and visual enhancements inside the app. We also added also four new endpoints for borrow market data, several API/SDK enhancements and revamped docs.