Justworks Company API
Read company-level data from the Justworks Partner API including company identity, departments,offices, bank account on file (masked), verified business information, custom-field definitions,and the jurisdictions in which the company operates.
Justworks Company API is one of 11 APIs that Justworks publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include HR, PEO, and Company. The published artifact set on APIs.io includes API documentation and an OpenAPI specification.
This API exposes 5 operations across 5 paths, and defines 2 schemas. It is described by OpenAPI 3.1.0, at version 2026-05-25.
Requests are made against a single base URL, https://public-api.justworks.com.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Justworks Company API declares
1 security scheme
for authenticating requests.
It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 3 scopes.
By default, every request must be authenticated.
Paths & Operations 5
Across 5 paths, the API surfaces 5 operations — 5 GET. Each is listed below with its method, path, parameters, and response codes.
Read access to company-level Justworks data
Schemas 2
The contract defines 2 schemas that model the data the API accepts and returns. The most detailed are Company (11 properties), CustomFieldDefinition (6 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Justworks 10
Other APIs Justworks publishes across the network.