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.
Limited machine-readable signal and partial portal coverage — documentation a human can read, but little a machine or agent can consume without scraping.
API Evangelist profiles Fourth the way a machine reads it — 12 machine-readable artifacts across 7 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Fourth scores 36.7/100 (thin), with a separate agent-readiness read of 22/100 (agent aware). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile Fourth
Each block below is one kind of artifact we hold for Fourth. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 7
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
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 within the panel for all 7 ·
Security Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Fourth Trust Center
ISAE 3402 Type II, ISAE 3000 (SOC 2) Type II, ISO 27001, SOC 1, SOC 2, SOC 3, ISO 9001:2015
SECURITYScopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Resources
Every other property we hold for Fourth — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Access & Security 8
Authentication, authorization, and security posture
Scroll within the panel for all 8 ·
Operate 4
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
← All providers · Data indexed from github.com/api-evangelist/fourth · machine-readable index on apis.io