Work Market
WorkMarket, an ADP company, is an independent contractor management platform that helps businesses organize, manage, and pay their extended workforce of 1099 contractors and freelancers. The platform covers contractor onboarding and verification, Labor Clouds for organizing talent by skill and location, assignment creation and tracking, compliance support, and fast payment processing. The WorkMarket Employer API exposes assignments, talent pools, address book, custom fields, labels, projects, and payment approval as a REST API, with webhooks, a Relay automation tool, and a certified MuleSoft connector for enterprise integration.
Work Market publishes 10 API contracts indexed on the APIs.io network, including Assignments API, Authorization API, Constants API, and 7 more. Tagged areas include Workforce Management, Contractors, Freelance, Gig Economy, and Human Resources.
The Work Market catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.
Work Market’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, signup flow, sandbox, and 24 more developer resources.
What this lets a business do 2
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Accelerator Portfolios (Y Combinator, 500 Global, Antler participation) | undeclared | - | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 1
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 10
Individual APIs this provider publishes, each with its own machine-readable definition.
Work Market Assignments API
The Assignments API from Work Market — 39 operation(s) for assignments.
Work Market Authorization API
The Authorization API from Work Market — 1 operation(s) for authorization.
Work Market Constants API
The Constants API from Work Market — 6 operation(s) for constants.
Work Market Custom Fields API
The Custom Fields API from Work Market — 1 operation(s) for custom fields.
Work Market Labels API
The Labels API from Work Market — 3 operation(s) for labels.
Work Market Locations API
The Locations API from Work Market — 1 operation(s) for locations.
Work Market Projects API
The Projects API from Work Market — 2 operation(s) for projects.
Work Market Talent Pools API
The Talent Pools API from Work Market — 6 operation(s) for talent pools.
Work Market UpdateCheckIn API
The UpdateCheckIn API from Work Market — 2 operation(s) for updatecheckin.
Work Market Address Book API
The Address Book API from Work Market — 5 operation(s) for address book.
Scroll for all 10
Open Collections 10
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Swagger spec for Work Market API v1 Addressbook API
OPEN COLLECTIONSwagger spec for Work Market API v1 Addressbook Labels API
OPEN COLLECTIONSwagger spec for Work Market API v1 Addressbook Projects API
OPEN COLLECTIONScroll for all 10
Agent Skills 3
Packaged agent skills for driving this provider's APIs from an AI assistant.
Create and send a WorkMarket assignment
AGENT SKILLManage WorkMarket talent pools
AGENT SKILLEvent Specifications 1
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Work Market Webhooks
ASYNCAPISpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
Work Market API Rules
SPECTRALOpenAPI Overlays 1
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Work Market Employer Api Overlay
DERIVEDJSON Schema 10
Standalone JSON Schema definitions for this provider's data models.
AssignmentDetails
JSON SCHEMAAssignmentListItem
JSON SCHEMAClient
JSON SCHEMACustomField
JSON SCHEMALocation
JSON SCHEMAPayment
JSON SCHEMAPricing
JSON SCHEMAProject
JSON SCHEMATalentPool
JSON SCHEMATemplate
JSON SCHEMAScroll for all 10
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll for all 7
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 2
Properties that don't map to a standard resource type
Source (apis.yml)
Work Market API — frequently asked questions
Does Work Market have an API?
Yes. APIs.io lists 10 APIs from Work Market, including Work Market Assignments API, Work Market Authorization API and Work Market Constants API, and 7 more.
Is there an OpenAPI specification for the Work Market API?
Yes. APIs.io indexes 10 OpenAPI specifications for Work Market, each linked for download from this page.
How do I authenticate with the Work Market API?
Work Market uses bearer-token authentication (accessToken · 1 scheme). The details are profiled on APIs.io as Work Market Authentication.
Is the Work Market API ready for AI agents?
Work Market has a Kin Score of 46.1 out of 100 (developing) and an Agent Readiness score of 24.8 (agent-aware), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.