World LibertyFi's USD1 Is Now Live In The Zebec Super App: Details

World Liberty Financial's USD1 stablecoin is now live inside the Zebec Super App, adding real-time payroll streaming, bulk transfers, and token vesting to the growing list of USD1 use cases on Solana.

What Is The Zebec Super App And Why Does It Matter For USD1?

Zebec is a financial infrastructure platform built on Solana. Its Super App is designed to handle payroll, treasury management, and payment flows for teams and institutions operating on-chain.

With USD1 now supported, teams can use the stablecoin directly within Zebec's existing infrastructure without needing to bridge to another network or switch platforms.

The integration was announced by both World Liberty Financial and Zebec. WLFI framed it as another avenue for USD1 adoption, noting that "your team's payroll" is now another way USD1 shows up in practice.

What Can Teams Actually Do With USD1 In Zebec?

The integration is built around how payroll and treasury operations work at an institutional level. Here is what is currently available or confirmed as coming:

• Stream salaries to team members in real time
• Execute bulk transfers in a single click
• Set up token vesting schedules
• Access separate employer and employee dashboards
• Onboard team members via email, with no wallet required (coming soon)

The no-wallet onboarding feature is particularly relevant for teams that include members without prior crypto experience. Once live, it lowers the setup barrier significantly for companies that want to pay staff in USD1 without requiring each employee to configure a wallet independently.

Zebec described the integration as "designed for teams and institutions operating with USD1," positioning it as infrastructure rather than a consumer product.

Is USD1 a Fully Backed Stablecoin?

Yes. USD1 is issued by BitGo and is fully backed by US treasuries, USD deposits, and cash equivalents. It currently has roughly $4.4 billion in circulation, according to DefiLlama.

The stablecoin is pegged to the US dollar and settles natively on Solana through WLFI's expanding infrastructure. Its backing structure puts it in the same category as other institutional-grade stablecoins, where reserves are held in short-duration, liquid assets rather than algorithmic mechanisms.

What Else Happened With WLFI On March 31?

The Zebec announcement was not the only development recently. 

USD1 Goes Live On Project 0

USD1 went live on Project 0 on March 31. Project 0 is a separate platform, and this marks another point of expansion for the stablecoin beyond its existing integrations.

AgentPay SDK v0.2.1 Is Released

World Liberty Financial also released AgentPay SDK v0.2.1, an update to its open-source AI agent payment toolkit. This version adds support for x402 and MPP (Machine Payment Protocol) HTTP payment flows, expands EIP-3009 signing support, and adds Tempo mainnet compatibility.

AgentPay is essentially a wallet and payment system built for AI agents rather than humans. When an AI agent is running a task and needs to pay for API access or a machine-to-machine transaction, AgentPay gives it its own wallet, a set of operator-defined spending rules, and the ability to sign and send payments locally without contacting WLFI or any third party.

The x402 flow handles HTTP 402 payment responses, a standard where an API signals that a resource requires payment before access is granted. MPP introduces session-based payments on Tempo mainnet, where an agent can open a session, deposit funds, make multiple requests, and close out when the job is done.

All transactions settle in USD1. The SDK carries no platform fees and is released under the MIT licence with no telemetry or auto-update mechanisms. It has also gone live on BNB Chain.

How Does WLFI's USD1 Expansion Fit The Broader Picture?

The Zebec integration, Project 0 launch, and AgentPay SDK update all arrived within the same 24-hour window, pointing to a coordinated push to embed USD1 across multiple use cases simultaneously.

Payroll infrastructure, AI agent payments, and on-chain IPO-style platforms represent three very different verticals. The common thread is USD1 as the settlement layer. WLFI appears to be focused on building out the number of contexts in which USD1 is a functional, usable currency rather than just a tradeable asset.

Solana's low transaction costs and high throughput make it a practical choice for payroll streaming and real-time transfers, where even small per-transaction fees can add up quickly at scale.

Resources

1. World LibertyFi on X: Posts (March, 2026 - April, 2026)

2. Zebec on X: Post on April 1

3. World LibertyFi docs: About AgentPay SDK