Factorial
Factorial is an all-in-one HR, payroll, time, talent, finance, and IT management platform headquartered in Barcelona, Spain, used by 16,000+ companies worldwide. The Factorial public API is a date-versioned REST API (current major 2026-04-01 "Legendre") covering employees, contracts, attendance, time off, payroll, ATS, performance, trainings, projects, finance, banking, procurement, IT assets, documents, webhooks, and an Approvals workflow surface. Authentication uses OAuth2 (on behalf of a user) or an x-api-key header (on behalf of the company), with 30+ scopes for granular partner access. Factorial publishes the OpenAPI schema and generated SDKs (Ruby, Python, Java, PHP, TypeScript, Node.js) at github.com/factorialco/oas and exposes an llms.txt index for AI agents.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Factorial the way a machine reads it — 59 machine-readable artifacts across 1 API, 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 — Factorial scores 51.3/100 (developing), with a separate agent-readiness read of 32/100 (agent ready). 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. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
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How we profile Factorial
Each block below is one kind of artifact we hold for Factorial. 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 24
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.
Factorial Webhooks API
Subscribe to lifecycle events fired by Factorial (employee created, employee terminated, attendance clock-in/out, ATS application created/updated, time-off leave created/approve...
Factorial ATS API
Applicant Tracking surface — Candidates, Applications, Application Phases, Job Postings, Feedback, Evaluation Forms, Answers. Read, create, update, and delete candidates and app...
Factorial Attendance API
Manage attendance shifts, breaks, overtime requests, timesheet edits, and attendance reviews. v2026-04-01 introduces an api_source field on shift DTOs so integrations can identi...
Factorial Time Off API
Time-off leaves, leave types, and time-off allowances with enriched statistics. Trigger webhooks on leave creation, update, and approval. Combine with the Approvals API to progr...
Factorial Contracts and Compensations API
Manage contract versions and compensation records. v2026-04-01 is a breaking-change release that removes legacy job catalog fields (job_title, professional_category_id, professi...
Factorial Payroll API
Payroll supplements, payroll identifiers, family situations, and bookkeeper resources. Backs Factorial's integrations with country- specific payroll engines.
Factorial Finance and Banking API
Bank accounts, transactions, ledger accounts, journal entries, tax rates and tax types, cost centers, cost center memberships, and budgets. Cost center memberships are bulk-upda...
Factorial Expenses API
Submit, approve, and reconcile employee expenses, mileage claims, and per-diem requests.
Factorial Documents API
Manage company- and employee-scoped documents and folders. Create, update, retrieve, and delete documents, request legal e-signatures, and fire document_created webhook events. ...
Factorial Performance API
Performance reviews, review processes, evaluations, and performance agreements. Configurable review cycles backed by the Job Catalog Tree introduced in v2026-01-01.
Factorial Trainings API
Manage training programs and training classes, expanded in v2026-04-01 with new class-level capabilities.
Factorial Job Catalog API
Job levels, roles, functions, and the hierarchical Job Catalog Tree introduced in v2026-01-01. Replaces the legacy free-text job_title on contracts via job_catalog_tree_node_uuid.
Factorial Project Management API
Projects, subprojects, tasks, project workers, planned and flexible time records, and budget strategies (full CRUD added in v2026-04-01).
Factorial IT Management API
IT asset and IT model endpoints (added in v2026-01-01) backing the SaaS, Inventory, MDM, and Cybersecurity modules.
Factorial Procurement API
Purchase orders, purchase requests, and purchase types. Added in v2026-01-01.
Factorial Approvals API
Programmatically approve or reject pending steps of a materialized approval flow, either by id or by resource_id+resource_type. Added in v2026-04-01.
Factorial Locations and Holidays API
Company locations, work areas, and company holidays.
Factorial Posts and Communities API
Groups, posts, and comments backing the Communities V2 feature. Requires Communities V2 to be enabled on the company.
Factorial Marketplace and Integrations API
Integrations Framework and Marketplace endpoints used by partner integrations to register, surface, and operate within the Factorial app.
Factorial Keys and OAuth API
Two authentication methods. OAuth2 (authorization code flow at /oauth/authorize and /oauth/token) is used to act on behalf of a user; Credentials/API Keys (x-api-key header) are...
Factorial Core::Employees::V2 API
The Core::Employees::V2 API from Factorial — 2 operation(s) for core::employees::v2.
Factorial Core::Me API
The Core::Me API from Factorial — 1 operation(s) for core::me.
Factorial Developer API
Versioned REST API for managing employees, contracts, leaves, attendance shifts, time off, documents, and other HR resources in Factorial. Supports API key (Bearer token) and OA...
Factorial Resources API
The Resources API from Factorial — 16 operation(s) for resources.
Scroll within the panel for all 24 ·
Open Collections 4
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONFactorial Core::Employees::V2 API
OPEN COLLECTIONFactorial Core::Employees::V2 Core::Me API
OPEN COLLECTIONFactorial API
OPEN COLLECTIONPricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the things the Kin Score reads for access clarity — renamed from commercial clarity in rubric 0.12, because a free statutory interface has access terms and no commercial ones.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Factorial Rate Limits
RATE LIMITSFinOps 1
Cost, billing, and metering signals let a buyer model the financial operations of an API before it's live. We profile them for the same reason we profile pricing: the money is part of the contract.
Cost, billing, and metering signals for API financial operations.
Factorial Finops
FINOPSFeatures 15
The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.
Notable capabilities this provider offers.
Scroll within the panel for all 15 ·
Semantic Vocabularies 1
JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.
JSON-LD contexts and semantic vocabularies used across these APIs.
Factorial Hr Context
JSON-LDSpectral Rules 2
Governance rulesets we run against this provider's specs — the automated checks behind parts of the score. Profiling them makes the quality bar explicit and re-runnable, not a matter of opinion.
Factorial API Rules
SPECTRALFactorial API Rules
SPECTRALJSON Schema 2
Standalone JSON Schema definitions describe the data models behind the API. We profile them so the shapes are validatable on their own — useful long after a single request is forgotten.
Standalone JSON Schema definitions for this provider's data models.
Factorial Employee
JSON SCHEMAFactorial Webhook Subscription
JSON SCHEMAExamples 2
Real request and response payloads are what turn a spec from abstract into obvious — and they're one of the twelve things an agent needs to call an API correctly on the first try.
Example request and response payloads for these APIs.
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.
Scopes 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.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Factorial — 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 4
Portal, sign-up, and the first successful call
Documentation 15
Reference material describing how the API behaves
Scroll within the panel for all 15 ·
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Build 9
SDKs, sample code, and the tooling you integrate with
Scroll within the panel for all 9 ·
Access & Security 5
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 5
Pricing, plans, and the legal terms of use
Company 3
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/factorial-hr · machine-readable index on apis.io
This is an independent, third-party profile of Factorial, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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