--- title: Gusto API Integration on Truto slug: gusto category: HRIS canonical: "https://truto.one/integrations/detail/gusto/" --- # Gusto API Integration on Truto **Category:** HRIS **Status:** Generally available ## Unified APIs ### Unified HRIS API - **Benefits** — Benefits represent the benefits for an Employee - **Companies** — Companies represent the companies in HRIS - **Company Benefits** — Represents the benefits offered by a company - **Employees** — Represents an employee in HRIS - **Groups** — Groups represent the groups for an Employee ## How it works 1. **Link your customer's Gusto account.** Use Truto's frontend SDK; we handle every OAuth and API key flow so you don't need to create the OAuth app. 2. **Authentication is automatic.** Truto refreshes tokens, stores credentials securely, and injects them into every API request. 3. **Call Truto's API to reach Gusto.** The Proxy API is a 1-to-1 mapping of the Gusto API. 4. **Get a unified response format.** Every response uses a single shape, with cursor-based pagination and data in the `result` field. ## Use cases - **Automate employee onboarding and offboarding workflows** — SaaS companies building IT provisioning, security, or device management tools can sync employee status from Gusto in real time. When an employee is onboarded or terminated, downstream actions like account provisioning, SSO revocation, or laptop shipment can be triggered automatically. - **Sync org structure for role-based access and approvals** — Products that rely on reporting lines—expense approvals, performance reviews, training assignments—can pull employees, groups, and manager relationships from Gusto to mirror the customer's organizational hierarchy without manual configuration. - **Power benefits administration from a third-party fintech app** — Retirement platforms, insurance brokers, and financial wellness apps can read company benefit plans and employee benefit enrollments from Gusto, enabling seamless deduction management and ensuring payroll withholdings stay accurate across systems. - **Build a unified employee directory across HRIS providers** — Any SaaS product that needs a canonical list of a customer's employees—names, emails, departments, employment status—can pull it from Gusto through Truto's Unified HRIS API, alongside dozens of other HRIS providers, with a single integration. ## What you can build - **Real-time employee lifecycle triggers** — Detect new hires, role changes, and terminations from Gusto to automatically provision or deprovision users, devices, or permissions in your product. - **Org chart and reporting-line sync** — Ingest groups, departments, and manager UUIDs from Gusto to build approval chains, assign reviewers, or scope access controls based on the customer's live org structure. - **Company benefits catalog import** — Pull the full list of company-level benefit plans—health, 401(k), commuter—including pre-tax/post-tax status and contribution limits, so your app can display and manage enrollment options. - **Employee benefits deduction viewer** — Surface individual employee deduction amounts and company match details from Gusto inside your product, giving HR admins or employees a consolidated view of their benefits across platforms. - **Multi-HRIS employee directory with zero config** — Offer your customers a one-click Gusto connection that populates your product with employee records—alongside BambooHR, Rippling, and other HRIS providers—using a single unified schema. - **Automated tenant initialization from company data** — When a new customer connects their Gusto account, read company details like locations and pay schedules to pre-configure your SaaS tenant without requiring manual setup. ## FAQs ### What authentication method does Gusto use? Gusto uses OAuth 2.0 for API authentication. Truto handles the full OAuth flow—token exchange, refresh, and secure storage—so your end users can connect their Gusto accounts with a simple authorization screen. ### Which Gusto data models are available through Truto's Unified HRIS API? Truto's Unified HRIS API maps Gusto data to five standard models: Employees, Companies, Groups, Benefits (employee-level), and Company Benefits. This gives you a normalized schema that works across multiple HRIS providers. ### Does Truto support writing data back to Gusto, or is it read-only? Truto currently does not list specific tools (proxy or native) for Gusto—they are built on request. The Unified HRIS API provides standardized read access to the listed models. If you need write operations or additional endpoints, contact Truto to discuss building custom tools for your use case. ### How does Truto handle Gusto's API pagination and rate limits? Truto abstracts away Gusto's pagination logic and rate limit handling. When you query the Unified HRIS API, Truto automatically manages cursor-based or offset pagination and respects Gusto's rate limits, so you get complete data sets without writing retry or throttling logic. ### Can I request additional Gusto API capabilities beyond the Unified HRIS models? Yes. Gusto tools are built on request at Truto. If you need access to payroll runs, time-off requests, tax documents, or any other Gusto-specific endpoint not covered by the Unified HRIS API, Truto can build proxy or native tools for your requirements. ### Is Gusto integration available alongside other HRIS providers through the same API? Absolutely. That's the core value of Truto's Unified HRIS API. You write one integration against the unified schema for Employees, Companies, Groups, and Benefits, and it works across Gusto and every other supported HRIS provider without per-provider code. ## Related reading - [Best Unified API for HRIS in 2026: Workday, Gusto, & Rippling](https://truto.one/blog/best-unified-api-for-hris-in-2026-workday-gusto-and-rippling-compared/) — Compare the best unified APIs for HRIS in 2026. Learn how to navigate Workday, Gusto, and Rippling integrations without draining engineering bandwidth.