Niural

Niural is a US-headquartered global workforce platform that unifies US payroll, PEO, employer of record (EOR), agent of record (AOR), contractor management and cross-border contractor payments in 150+ countries inside a single system, with an AI layer (EMMA) that orchestrates payroll, compliance and expense approvals. Its public developer surface — the Niural Public API, documented on ReadMe at docs.niural.com — is narrower than the product: an OpenAPI 3.0.3 contract of 15 operations across four resources (authentication, pay-on-demand contractor contracts, invoices and transactions), served from separate sandbox and live hosts, authenticated with a client-credential exchange that returns a bearer JWT, with cursor pagination, a 25 requests/second rate limit, and three HMAC-SHA256-signed webhook events. Payroll, PEO, EOR and benefits are not exposed on the public API.

Niural publishes 4 APIs on the APIs.io network, including Authentication API, Contracts API, Invoices API, and 1 more. Tagged areas include Company, Payroll, Human Resources, Employer of Record, and Contractor Management.

The Niural catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Niural’s developer surface includes documentation, API reference, getting-started guide, support, engineering blog, pricing, signup flow, and 28 more developer resources.

🌐 Visit website 📡 Source on GitHub

62.4/100 strong ▬ flat Agent 50/100 agent ready Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0

4 APIs 1 MCP Servers

CompanyPayrollHuman ResourcesEmployer of RecordContractor ManagementGlobal PaymentsInvoicingComplianceFintech

Kin Score

Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0

Composite quality — 62.4/100 · strong

Contract Quality 14.0 / 21

Developer Ergonomics 10.6 / 17

Commercial Clarity 15.7 / 17

Operational Transparency 5.5 / 11

Governance 1.2 / 10

Discoverability 6.9 / 9

Regulatory Posture 8.4 / 15

Agent readiness — 50/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/niural: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 4

Individual APIs this provider publishes, each with its own machine-readable definition.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Rate Limits 1

Documented rate limits and quota policies.

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

OpenAPI

OpenAPI

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

AgentSkill

MCPServer

AgenticAccess

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

DataModel

Conformance

Webhooks

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

Access & Security 5

Authentication, authorization, and security posture

Compliance

Compliance

TrustCenter

TrustCenter

Authentication

Authentication

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

RateLimits

RateLimits

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

TermsOfService

PrivacyPolicy

Plans

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

Overlay

Overlay

Source (apis.yml)

aid: niural
name: Niural
description: 'Niural is a US-headquartered global workforce platform that unifies US payroll, PEO, employer of record (EOR),
  agent of record (AOR), contractor management and cross-border contractor payments in 150+ countries inside a single system,
  with an AI layer (EMMA) that orchestrates payroll, compliance and expense approvals. Its public developer surface — the
  Niural Public API, documented on ReadMe at docs.niural.com — is narrower than the product: an OpenAPI 3.0.3 contract of
  15 operations across four resources (authentication, pay-on-demand contractor contracts, invoices and transactions), served
  from separate sandbox and live hosts, authenticated with a client-credential exchange that returns a bearer JWT, with cursor
  pagination, a 25 requests/second rate limit, and three HMAC-SHA256-signed webhook events. Payroll, PEO, EOR and benefits
  are not exposed on the public API.'
image: https://www.niural.com/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/niural/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-04'
modified: '2026-08-04'
tags:
- Company
- Payroll
- Human Resources
- Employer of Record
- Contractor Management
- Global Payments
- Invoicing
- Compliance
- Fintech
apis:
- aid: niural:niural-authentication-api
  name: Niural Authentication API
  description: The Authentication API from Niural — 1 operation(s) for authentication.
  humanURL: https://docs.niural.com/
  baseURL: https://api-live.niural.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/niural-authentication-api-openapi.yml
  - type: Documentation
    url: https://docs.niural.com/
  - type: APIReference
    url: https://docs.niural.com/reference/post_authenticate
  - type: GettingStarted
    url: https://docs.niural.com/docs/get-started
  - type: Authentication
    url: https://docs.niural.com/docs/authentications
  - type: Sandbox
    url: sandbox/niural-sandbox.yml
  - type: Webhooks
    url: asyncapi/niural-webhooks.yml
- aid: niural:niural-contracts-api
  name: Niural Contracts API
  description: The Contracts API from Niural — 4 operation(s) for contracts.
  humanURL: https://docs.niural.com/
  baseURL: https://api-live.niural.com
  tags:
  - Contracts
  properties:
  - type: OpenAPI
    url: openapi/niural-contracts-api-openapi.yml
  - type: Documentation
    url: https://docs.niural.com/
  - type: APIReference
    url: https://docs.niural.com/reference/post_authenticate
  - type: GettingStarted
    url: https://docs.niural.com/docs/get-started
  - type: Authentication
    url: https://docs.niural.com/docs/authentications
  - type: Sandbox
    url: sandbox/niural-sandbox.yml
  - type: Webhooks
    url: asyncapi/niural-webhooks.yml
- aid: niural:niural-invoices-api
  name: Niural Invoices API
  description: The Invoices API from Niural — 2 operation(s) for invoices.
  humanURL: https://docs.niural.com/
  baseURL: https://api-live.niural.com
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/niural-invoices-api-openapi.yml
  - type: Documentation
    url: https://docs.niural.com/
  - type: APIReference
    url: https://docs.niural.com/reference/post_authenticate
  - type: GettingStarted
    url: https://docs.niural.com/docs/get-started
  - type: Authentication
    url: https://docs.niural.com/docs/authentications
  - type: Sandbox
    url: sandbox/niural-sandbox.yml
  - type: Webhooks
    url: asyncapi/niural-webhooks.yml
- aid: niural:niural-transactions-api
  name: Niural Transactions API
  description: The Transactions API from Niural — 4 operation(s) for transactions.
  humanURL: https://docs.niural.com/
  baseURL: https://api-live.niural.com
  tags:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/niural-transactions-api-openapi.yml
  - type: Documentation
    url: https://docs.niural.com/
  - type: APIReference
    url: https://docs.niural.com/reference/post_authenticate
  - type: GettingStarted
    url: https://docs.niural.com/docs/get-started
  - type: Authentication
    url: https://docs.niural.com/docs/authentications
  - type: Sandbox
    url: sandbox/niural-sandbox.yml
  - type: Webhooks
    url: asyncapi/niural-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.niural.com/
- type: DeveloperPortal
  url: https://docs.niural.com/
- type: Documentation
  url: https://docs.niural.com/
- type: APIReference
  url: https://docs.niural.com/reference/post_authenticate
- type: GettingStarted
  url: https://docs.niural.com/docs/get-started
- type: Support
  url: https://help.niural.com/
- type: Blog
  url: https://www.niural.com/blogs
- type: GitHubOrganization
  url: https://github.com/Niural
- type: Pricing
  url: https://www.niural.com/pricing
- type: SignUp
  url: https://app.niural.com/auth/employer/register
- type: Login
  url: https://app.niural.com/auth/login
- type: TermsOfService
  url: https://www.niural.com/legal/customer-terms-of-service
- type: PrivacyPolicy
  url: https://www.niural.com/legal/privacy-policy
- type: Compliance
  url: https://trust.niural.com/
- type: TrustCenter
  url: security/niural-trust-center.yml
- type: OpenAPI
  url: openapi/_original/niural-public-api-openapi.yml
- type: Overlay
  url: overlays/niural-public-api-overlay.yaml
- type: LLMsTxt
  url: llms/niural-llms.txt
- type: Authentication
  url: authentication/niural-authentication.yml
- type: Conventions
  url: conventions/niural-conventions.yml
- type: ErrorCatalog
  url: errors/niural-problem-types.yml
- type: Lifecycle
  url: lifecycle/niural-lifecycle.yml
- type: ChangeLog
  url: changelog/niural-changelog.yml
- type: DataModel
  url: data-model/niural-data-model.yml
- type: Conformance
  url: conformance/niural-conformance.yml
- type: RateLimits
  url: rate-limits/niural-rate-limits.yml
- type: Plans
  url: plans/niural-plans-pricing.yml
- type: Sandbox
  url: sandbox/niural-sandbox.yml
- type: Webhooks
  url: asyncapi/niural-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: MCPServer
  url: mcp/niural-mcp.yml
- type: Packages
  url: packages/niural-packages.yml
- type: VulnerabilityDisclosure
  url: security/niural-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/niural-domain-security.yml
- type: AgenticAccess
  url: agentic-access/niural-agentic-access.yml
x-enrichment:
  date: '2026-08-04'
  status: enriched
  artifacts_added: 25
  pass: local-v1

Niural

Kin Score

APIs 4

Niural Authentication API

Niural Contracts API

Niural Invoices API

Niural Transactions API

Open Collections 5

API Collection

Niural Public Authentication API

Niural Public Contracts API

Niural Public Invoices API

Niural Public Transactions API

MCP Servers 1

niural-mcp.yml

Pricing Plans 1

Niural Plans Pricing

Rate Limits 1

Niural Rate Limits

Event Specifications 1

Niural Webhooks

Security Posture 4

Niural Authentication

Niural Domain Security

Niural Vulnerability Disclosure

Niural Trust Center

Agentic Access 1

Niural Agentic Access

Resources