# Plug-In SDK for HR & Payroll Systems

**The Problem:**\
Enterprises and startups already use a variety of payroll and HR platforms — Deel, Remote, Rippling, BambooHR, and others. Adopting new infrastructure from scratch is costly and time-consuming.

**The Solution:**\
ZKPay offers a **Plug-in Software Development Kit (SDK)** that integrates its functionality directly into existing HR and payroll systems. This SDK acts as the **privacy layer** that upgrades traditional systems to Web3-ready, cryptographically verifiable platforms.

**Key Functions:**

* **Direct Integration:** Connects to corporate HR tools for automated payroll execution via API.
* **Hybrid Payment Support:** Enables mixed payments — part fiat, part crypto — all handled seamlessly.
* **Proof Automation:** Automatically generates zkPayroll Proofs for every cycle without manual input.
* **Private Audit Trail:** Produces private, on-chain attestations for audit or regulatory review.

**Example Use Case:**\
A multinational company using Deel can install the ZKPay SDK. When payroll is processed, Deel automatically generates zkPayroll Proofs and routes payouts through the X402 Bridge. The company gains real-time proof of compliance while keeping its entire employee dataset encrypted.

**The Result:**\
Integration without disruption. ZKPay ensures that enterprises can adopt **next-generation payroll infrastructure** within days, not months.
