Fourth

Fourth is an AI-powered workforce management and inventory platform built for restaurants and hospitality, uniting recruiting, HR, payroll, labor scheduling, purchasing, and inventory management in a single system across 120,000+ locations globally (customers include Taco Bell, Dunkin', KFC, Pizza Hut and Culver's). Its product family includes HotSchedules for scheduling, Fourth iQ for restaurant performance, Human Capital Management for talent and payroll, and Adaco inventory for hotels. Fourth publishes a developer portal of REST APIs covering POS transactions, recipe & menu engineering, menu cycles, workforce (UK employee, labor productivity, schedules), notifications, tasks, SCIM identity provisioning, and Adaco hotel inventory. APIs authenticate with OAuth 2.0 (client_credentials and password grants) or Basic Auth; production and test host locations are provisioned per mutual customer and are not publicly disclosed.

Fourth publishes 7 APIs on the APIs.io network. Tagged areas include Company, Workforce Management, Restaurant, Hospitality, and Inventory Management.

Fourth’s developer surface includes documentation, API reference, getting-started guide, authentication, support, engineering blog, changelog, and 19 more developer resources.

🌐 Visit website 📡 Source on GitHub

32.5/100 thin ▬ flat Agent 7/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

7 APIs

Company Workforce Management Restaurant Hospitality Inventory Management Payroll Scheduling HCM Point-of-Sale Food and Beverage

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 32.5/100 · thin

Contract Quality 0.0 / 25

Developer Ergonomics 7.6 / 20

Access Clarity 8.7 / 20

Operational Transparency 6.8 / 13

Contract Governance 2.2 / 12

Discoverability 7.2 / 10

Agent readiness — 7/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/fourth: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 7

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

Fourth Notifications API

Platform notifications API secured with OAuth 2.0 (scope NotificationService).

Fourth Tasks API

Task management API secured with OAuth 2.0.

Fourth Account SCIM API

SCIM 2.0 user and identity provisioning for Fourth accounts.

Fourth Schedules API

Employee scheduling data for the HotSchedules workforce platform.

Fourth POS Transaction API

Point-of-sale transaction integration API.

Fourth Recipe & Menu Engineering API

RME export and import APIs for recipe and menu data.

Fourth Adaco Web API

Adaco hotel inventory (product catalogue, vendor, budget, requisitions, inventory).

Scroll for all 7

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Fourth Authentication

oauth2/http · 2 schemes

SECURITY

Fourth Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Fourth Vulnerability Disclosure

security.txt · contact published

SECURITY

Fourth Trust Center

ISAE 3402 Type II, ISAE 3000 (SOC 2) Type II, ISO 27001, SOC 1, SOC 2, SOC 3, ISO 9001:2015

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Fourth Scopes

1 scope · clientCredentials

1 scopes

SCOPES

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Webhooks

Webhooks

Conformance

Conformance

Access & Security 8

Authentication, authorization, and security posture

Authentication

OAuthScopes

Compliance

TrustCenter

Security

VulnerabilityDisclosure

VulnerabilityDisclosure

SecurityTxt

SecurityTxt

DomainSecurity

DomainSecurity

Scroll for all 8

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

Deprecation

ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: fourth
name: Fourth
description: Fourth is an AI-powered workforce management and inventory platform built for restaurants and hospitality, uniting
  recruiting, HR, payroll, labor scheduling, purchasing, and inventory management in a single system across 120,000+ locations
  globally (customers include Taco Bell, Dunkin', KFC, Pizza Hut and Culver's). Its product family includes HotSchedules for
  scheduling, Fourth iQ for restaurant performance, Human Capital Management for talent and payroll, and Adaco inventory for
  hotels. Fourth publishes a developer portal of REST APIs covering POS transactions, recipe & menu engineering, menu cycles,
  workforce (UK employee, labor productivity, schedules), notifications, tasks, SCIM identity provisioning, and Adaco hotel
  inventory. APIs authenticate with OAuth 2.0 (client_credentials and password grants) or Basic Auth; production and test
  host locations are provisioned per mutual customer and are not publicly disclosed.
url: https://raw.githubusercontent.com/api-evangelist/fourth/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-19'
image: https://www.fourth.com/themes/custom/fourth/logo.svg
tags:
- Company
- Workforce Management
- Restaurant
- Hospitality
- Inventory Management
- Payroll
- Scheduling
- HCM
- Point-of-Sale
- Food and Beverage
tags_raw:
- Company
- Workforce Management
- Restaurants
- Hospitality
- Inventory Management
- Payroll
- Scheduling
- Human Capital Management
- Point of Sale
- Food and Beverage
apis:
- name: Fourth Notifications API
  description: Platform notifications API secured with OAuth 2.0 (scope NotificationService).
  humanURL: https://developer.fourth.com/en-gb/docs/notifications-api/reference
  properties:
  - type: APIReference
    url: https://developer.fourth.com/en-gb/docs/notifications-api/reference
- name: Fourth Tasks API
  description: Task management API secured with OAuth 2.0.
  humanURL: https://developer.fourth.com/en-gb/docs/tasks-api/reference
  properties:
  - type: APIReference
    url: https://developer.fourth.com/en-gb/docs/tasks-api/reference
- name: Fourth Account SCIM API
  description: SCIM 2.0 user and identity provisioning for Fourth accounts.
  humanURL: https://developer.fourth.com/en-gb/docs/fourth-account-scim-api/reference
  properties:
  - type: APIReference
    url: https://developer.fourth.com/en-gb/docs/fourth-account-scim-api/reference
- name: Fourth Schedules API
  description: Employee scheduling data for the HotSchedules workforce platform.
  humanURL: https://developer.fourth.com/en-gb/docs/schedules-api/reference
  properties:
  - type: APIReference
    url: https://developer.fourth.com/en-gb/docs/schedules-api/reference
- name: Fourth POS Transaction API
  description: Point-of-sale transaction integration API.
  humanURL: https://developer.fourth.com/en-gb/docs/pos-gateway/transaction-api-reference
  properties:
  - type: APIReference
    url: https://developer.fourth.com/en-gb/docs/pos-gateway/transaction-api-reference
- name: Fourth Recipe & Menu Engineering API
  description: RME export and import APIs for recipe and menu data.
  humanURL: https://developer.fourth.com/en-gb/docs/recipe-menu-engineering-export-api/reference
  properties:
  - type: APIReference
    url: https://developer.fourth.com/en-gb/docs/recipe-menu-engineering-export-api/reference
- name: Fourth Adaco Web API
  description: Adaco hotel inventory (product catalogue, vendor, budget, requisitions, inventory).
  humanURL: https://developer.fourth.com/en-gb/docs/adaco-product-catalog-api/reference
  properties:
  - type: APIReference
    url: https://developer.fourth.com/en-gb/docs/adaco-product-catalog-api/reference
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.fourth.com/
- type: DeveloperPortal
  url: https://developer.fourth.com/en-gb
- type: Documentation
  url: https://developer.fourth.com/en-gb
- type: APIReference
  url: https://developer.fourth.com/en-gb
- type: GettingStarted
  url: https://developer.fourth.com/en-gb/docs/getting-started
- type: Authentication
  url: authentication/fourth-authentication.yml
- type: OAuthScopes
  url: scopes/fourth-scopes.yml
- type: Support
  url: https://www.fourth.com/support/customer-support
- type: Blog
  url: https://www.fourth.com/resources
- type: Login
  url: https://secure.na1.fourth.com
- type: TermsOfService
  url: https://www.fourth.com/legal/legal-terms-and-policies
- type: PrivacyPolicy
  url: https://www.fourth.com/legal/privacy-policy
- type: StatusPage
  url: https://status.fourth.com
- type: Lifecycle
  url: lifecycle/fourth-lifecycle.yml
- type: Deprecation
  url: https://developer.fourth.com/en-gb/docs/whats-new
- type: ChangeLog
  url: changelog/fourth-changelog.yml
- type: Webhooks
  url: https://developer.fourth.com/en-gb/docs/notifications-api/reference
- type: Conformance
  url: conformance/fourth-conformance.yml
- type: Compliance
  url: https://www.fourth.com/legal/fourth-hosting-data-security
- type: TrustCenter
  url: security/fourth-trust-center.yml
- type: Security
  url: https://www.fourth.com/.well-known/security.txt
- type: VulnerabilityDisclosure
  url: security/fourth-vulnerability-disclosure.yml
- type: SecurityTxt
  url: well-known/fourth-security.txt
- type: WellKnown
  url: well-known/fourth-well-known.yml
- type: DomainSecurity
  url: security/fourth-domain-security.yml
- type: LLMsTxt
  url: llms/fourth-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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