What's New In April
Your monthly roundup of new yield opportunities, API updates, and what's shipping at Yield.xyz.
April brought new stablecoin yield coverage across four L2s and 7 new networks, new Morpho V2 vaults on Ethereum, enterprise-grade Single Sign-On, and a round of infrastructure improvements across APY data, gas estimation, browser compatibility, and the Campaign Engine.
New Yield Opportunities
New protocols and networks now live on Yield.xyz:
Sky Savings Rate (sUSDS): Sky Savings Rate (sUSDS) is now available on Base, Arbitrum, Optimism, and Unichain via Sky PSM3. Platforms looking to offer stablecoin yield can now access sUSDS across all four networks through the Yield.xyz API alongside existing stablecoin coverage.
Graph Protocol: The Graph Protocol native staking integration has been updated to align with the Horizon upgrade. No changes are required for existing integrations.
Ecosystem Updates
Yield.xyz x Dfns: Yield.xyz is partnering with Dfns to bring native yield capabilities to their wallet infrastructure platform. Dfns serves as the custodial layer for Circle, Gemini, Midas, IBM, and dozens of regulated institutions.
Reah for Agents, powered by Yield.xyz: Reah launched financial accounts for AI agents, with yield infrastructure powered by Yield.xyz. Agents can grow balances autonomously, with scoped permissions, approval flows, and full transparency built in.
Reap Global partnership: Yield.xyz is partnering with Reap to bring yield to their corporate card platform. Reap's card module gives corporate treasuries access to stablecoin-powered infrastructure for global payments.
Yield.xyz API Updates
New infrastructure and endpoints to build faster:
Single Sign-On (SAML & OIDC)
Full SSO support is now available with team-scoped configuration, SAML 2.0 and OIDC/Google Workspace authentication, automatic user provisioning, SSO audit logging, and admin management endpoints.
Roles & Permissions (RBAC)
Yield.xyz now supports a four-tier role model — Owner, Admin, Operator, and Member — letting teams cleanly scope dashboard and API access across stakeholders. Owners hold full access including SSO and billing; Admins manage projects, API keys, and configurations; Operators handle day-to-day yield, fee, and webhook management; and Members get read-only visibility across projects, balances, and reports.
ERC-4626 APY History Routing
The reward rate history endpoint now selects automatically between legacy and ERC-4626 data sources. Smoothed averages are applied to improve trend accuracy across historical APY data. Any integration surfacing rate history for ERC-4626 vaults will see more consistent results.
OAV Per-Vault Provider Settings
Vault configurations now support optional per-vault provider assignments. This prevents default provider overrides when running multiple OAVs with different provider requirements on the same account.
Celo Gas Estimation
Gas estimation on Celo now uses dynamic calculation with fallback protection, replacing fixed gas limits on account activation transactions. Builders integrating Celo staking will see more reliable transaction construction.
TRON Dynamic Fee Estimation
TRON transactions now use live chain parameters for fee estimation instead of hardcoded gas values, with a 1-hour TTL cache and automatic error recovery. Builders integrating TRON will see more accurate fee estimates across all transaction types.
Historical API Pagination
Reward rate and TVL history endpoints now return paginated responses. The payload structure has changed from series to a unified items array. Builders using these endpoints should update their response handling accordingly.
Protocol Maintenance Error Semantics
Stake/unstake calls on paused protocols (e.g., Morpho isSupplyPaused) now return HTTP 412 instead of 503, correctly signaling a precondition failure rather than a service outage. Decommissioned yields return 410.
ERC20 Max Allowance on Deposit
Action creation now supports an optional useMaxAllowance flag. When enabled, approval transactions use uint256.max instead of the exact deposit amount, reducing the need for repeat approvals on subsequent deposits.
In Case You Missed It
April covered new L2 yield coverage, access controls, and a set of reliability improvements across existing integrations. Key items from the month:
- Sky Savings Rate (sUSDS) on Base, Arbitrum, Optimism, and Unichain
- 7 new networks added: Unichain, Sonic, Monad, Monad Testnet, HyperEVM, Plasma, Katana
- New Morpho V2 vaults on Ethereum (Steakhouse Prime USDC, USDT, Wrapped Instant)
- Single Sign-On (SAML & OIDC) now available
- Roles & Permissions (RBAC): four-tier model with scoped dashboard and API access
- Monad testnet: full active validator set now supported
As always, follow Yield.xyz on X for ongoing updates and drop into the docs to start building: docs.yield.xyz