Gusto Embedded Payroll API

Name: Gusto Embedded Payroll API
Brand: Gusto Embedded Payroll API
Availability: InStock

✓ Official Vendor SpecHR recruitingPayrollbearer24 EndpointsREST

For Agents

Run payroll calculations, submit payroll for processing, manage employees and contractors, and onboard new companies into an embedded payroll experience.

Install Jentic One Beta

Connect the Gusto Embedded Payroll API to your agent

Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the Gusto Embedded Payroll API, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.

Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.

Step 1: Jentic One Host machine

# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh

Step 2: Agent machine

# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register       # connects your agent to your Jentic One instance

Jentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.

Capabilities

What an agent can do with Gusto Embedded Payroll API.

Calculate payroll with earnings, deductions, and tax withholdings before submission

Submit finalized payrolls for processing with direct deposit distribution

Onboard partner-managed companies with bank account and tax setup

GET STARTED

Start building with Gusto Embedded Payroll API

Explore with Jentic

View OpenAPI Document

Use Cases

Patterns agents use Gusto Embedded Payroll API for, with concrete tasks.

★ AI Agent Payroll Processing

AI agents use the Gusto Embedded Payroll API through Jentic to automate pay runs without direct Gusto credentials. An agent searches for 'calculate and submit payroll', loads the schema for the calculate endpoint, reviews the totals, and then submits the payroll for processing. The two-step calculate-then-submit flow prevents accidental payroll submissions by requiring explicit confirmation.

Calculate payroll for company ID C001 for the current pay period, verify the total net pay amount, then submit the payroll for processing

Embedded Payroll for SaaS Platforms

Partner applications embed Gusto's payroll engine to offer payroll as a native feature without building tax calculation, compliance, or direct deposit infrastructure. The partner-managed-companies endpoint handles company creation and setup, while payroll endpoints handle the ongoing run cycle. Partners earn revenue share while their customers get full-service payroll within the partner's UI.

Create a new partner-managed company with the business name, EIN, and primary contact email, then add a bank account for payroll funding

Employee Lifecycle Management

Add, update, and offboard employees through the API with compensation details, tax elections, and benefits enrolment. The employees endpoint handles the full lifecycle from hire through termination, syncing with payroll calculations automatically. Changes to compensation or deductions reflect in the next payroll calculation without manual reconfiguration.

Add a new employee to company ID C001 with their name, start date, salary of $85,000, and filing status, then verify they appear in the next payroll calculation

Contractor Payment Processing

Pay contractors and track 1099 obligations through dedicated contractor endpoints. The contractor-payments resource handles one-time and recurring payments with configurable payment methods. At year-end, payment history supports 1099-NEC generation for tax compliance without manual record aggregation.

Create a contractor payment of $5,000 for contractor ID CT001 at company ID C001 with payment date of next Friday

Key Endpoints

24 endpoints — embed full payroll processing, employee management, and contractor payments into partner applications through 24 endpoints.

METHOD

PATH

DESCRIPTION

POST

/v1/partner-managed-companies

Create a partner-managed company

GET

/v1/companies/{company_id}/employees

List employees for a company

GET

/v1/companies/{company_id}/payrolls

List payrolls for a company

POST

/v1/companies/{company_id}/payrolls/{payroll_id}/calculate

Calculate payroll totals

POST

/v1/companies/{company_id}/payrolls/{payroll_id}/submit

Submit payroll for processing

GET

/v1/companies/{company_id}/contractors

List contractors for a company

POST

/v1/companies/{company_id}/contractor-payments

Create a contractor payment

GET

/v1/companies/{company_id}/bank-accounts

List company bank accounts

POST

/v1/partner-managed-companies

Create a partner-managed company

GET

/v1/companies/{company_id}/employees

List employees for a company

GET

/v1/companies/{company_id}/payrolls

List payrolls for a company

POST

/v1/companies/{company_id}/payrolls/{payroll_id}/calculate

Calculate payroll totals

POST

/v1/companies/{company_id}/payrolls/{payroll_id}/submit

Submit payroll for processing

Why Jentic?

Three things that make agents converge on Jentic-routed access.

Credential isolation

Your Gusto client credentials and bearer tokens are stored once, encrypted, by your own Jentic One instance and injected at execution time. They never enter the agent's prompt, logs, or context.

Intent-based discovery

Agents search Jentic by intent such as 'run payroll for a company' or 'list a company's employees', and Jentic returns the matching Gusto operation with its input schema so the agent can call calculate then submit without navigating the partner documentation.

Time to first call

FAQs

Specific to using Gusto Embedded Payroll API through Jentic.

What authentication does the Gusto Embedded Payroll API use?

The API uses OAuth 2.0 Bearer tokens obtained through the token endpoint at POST /v1/token. Partners authenticate with client credentials and receive access tokens scoped to specific companies. Through Jentic, OAuth tokens are managed in your Jentic One instance so agents receive scoped access without handling client secrets.

Can I calculate payroll before submitting it for processing?

Yes. The two-step flow requires calling POST /v1/companies/{company_id}/payrolls/{payroll_id}/calculate first, which returns computed earnings, deductions, taxes, and net pay for review. Only after confirming the totals do you call POST /v1/companies/{company_id}/payrolls/{payroll_id}/submit to initiate direct deposits and tax payments.

What are the rate limits for the Gusto Embedded Payroll API?

Gusto enforces rate limits per partner application, typically 100 requests per minute per company. The API returns HTTP 429 with rate limit headers when exceeded. For payroll operations, the calculate and submit endpoints have additional safeguards preventing duplicate submissions within the same pay period.

How do I run payroll through Jentic?

Search Jentic for 'calculate and submit payroll', load the schema for the calculate endpoint at POST /v1/companies/{company_id}/payrolls/{payroll_id}/calculate, execute to get totals, then load and call the submit endpoint. Install with pip install jentic and authenticate through Jentic One, the self-hosted execution layer.

Does the Gusto API support contractor payments?

Yes. POST /v1/companies/{company_id}/contractor-payments creates a payment for a specific contractor with the amount, payment date, and payment method. GET /v1/companies/{company_id}/contractors lists all contractors. Payments are tracked for 1099-NEC generation at year-end.

Can I migrate an existing Gusto company to embedded payroll?

Yes. First check migration readiness via GET /v1/partner-managed-companies/{company_id}/migration_readiness, which returns blocking issues if any. Once ready, POST /v1/partner-managed-companies/{company_id}/migrate transfers the company to your partner-managed account while preserving their payroll history and employee data.

Can I limit what my agent is allowed to do with the Gusto Embedded Payroll API?

Yes. Because you run Jentic One yourself, your own rules decide which Gusto operations and credentials your agent may use. Since Gusto puts the company id and payroll id in the URL path, you can pin the agent to a single company and allow only the operations you want, such as calculating and submitting that company's payroll while excluding contractor payments or partner-managed company creation. Your Gusto client credentials and bearer tokens stay in your Jentic One instance and are injected at execution time, so the agent never sees them.

Gusto Embedded Payroll API

Connect the Gusto Embedded Payroll API to your agent

Capabilities

Start building with Gusto Embedded Payroll API

Use Cases

Key Endpoints

Why Jentic?

Related APIs

FAQs