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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.
Factorial publishes 2 APIs on the APIs.io network: Core::Employees::V2 API and Core::Me API. Tagged areas include HR, Human Resources, Payroll, Time Off, and Time Tracking.
The Factorial catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.
Factorial’s developer surface includes authentication, developer portal, documentation, getting-started guide, changelog, pricing, signup flow, and 42 more developer resources.
22 APIs
15 Features
HR Human Resources Payroll Time Off Time Tracking ATS Performance Finance Expenses Spain Barcelona All-in-One
On this page
Kin Score
APIs 22
Open Collections 1
Pricing Plans 1
Rate Limits 1
FinOps 1
Features 15
Vocabularies 1
Spectral Rules 2
JSON Schema 2
Examples 2
Security Posture 4
Scopes 1
Agentic Access 1
Resources 49
apis.yml
45 Operational Transparency
Composite quality — 68.6/100 · exemplar
Contract Quality
17.5 / 25
Developer Ergonomics
12.2 / 20
Commercial Clarity
18.4 / 20
Operational Transparency
5.8 / 13
Agent readiness — 42/100 · agent ready
Machine-Readable Contract
18 / 18
Agentic Access Contract
10 / 10
MCP Server
0 / 12
Machine-Readable Auth
10 / 10
Idempotency
0 / 9
Stable Error Semantics
0 / 8
Request/Response Examples
7 / 7
Rate-Limit Signaling
7 / 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
Individual APIs this provider publishes, each with its own machine-readable definition.
Subscribe to lifecycle events fired by Factorial (employee created, employee terminated, attendance clock-in/out, ATS application created/updated, time-off leave created/approve...
Applicant Tracking surface — Candidates, Applications, Application Phases, Job Postings, Feedback, Evaluation Forms, Answers. Read, create, update, and delete candidates and app...
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...
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...
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...
Payroll supplements, payroll identifiers, family situations, and bookkeeper resources. Backs Factorial's integrations with country- specific payroll engines.
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...
Submit, approve, and reconcile employee expenses, mileage claims, and per-diem requests.
Manage company- and employee-scoped documents and folders. Create, update, retrieve, and delete documents, request legal e-signatures, and fire document_created webhook events. ...
Performance reviews, review processes, evaluations, and performance agreements. Configurable review cycles backed by the Job Catalog Tree introduced in v2026-01-01.
Manage training programs and training classes, expanded in v2026-04-01 with new class-level capabilities.
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.
Projects, subprojects, tasks, project workers, planned and flexible time records, and budget strategies (full CRUD added in v2026-04-01).
IT asset and IT model endpoints (added in v2026-01-01) backing the SaaS, Inventory, MDM, and Cybersecurity modules.
Purchase orders, purchase requests, and purchase types. Added in v2026-01-01.
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.
Company locations, work areas, and company holidays.
Groups, posts, and comments backing the Communities V2 feature. Requires Communities V2 to be enabled on the company.
Integrations Framework and Marketplace endpoints used by partner integrations to register, surface, and operate within the Factorial app.
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...
The Core::Employees::V2 API from Factorial — 2 operation(s) for core::employees::v2.
The Core::Me API from Factorial — 1 operation(s) for core::me.
Scroll for all 22
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
Published pricing tiers and plan structures.
Documented rate limits and quota policies.
Cost, billing, and metering signals for API financial operations.
Notable capabilities this provider offers.
All-in-one HR, payroll, time, finance, talent, and IT modules
Public REST API with dated, major-versioned releases (current 2026-04-01 "Legendre")
Two auth schemes - OAuth2 authorization code on behalf of a user and x-api-key on behalf of the company
30+ OAuth scopes for fine-grained partner access
Production and Demo environments (api.factorialhr.com vs api.demo.factorialhr.com)
681+ documented endpoints across 30+ resource domains
Webhook subscriptions with documented event catalogue and retry policy
Approvals API for programmatic approve/reject of pending workflows
Job Catalog Tree replacing free-text job titles on contracts
Bulk endpoints (e.g. cost-center memberships) to reduce roundtrips
Integrations Framework, Payroll and Finance Integrations partner programs
Marketplace surface for distributing partner integrations inside the Factorial app
Officially generated SDKs for Ruby, Python, Java, PHP, TypeScript (axios), and Node.js server
llms.txt endpoint for AI agents at https://apidoc.factorialhr.com/llms.txt
16,000+ companies on platform; HQ in Barcelona, Spain
Scroll for all 15
JSON-LD contexts and semantic vocabularies used across these APIs.
Spectral governance rulesets for linting and validating these APIs.
Standalone JSON Schema definitions for this provider's data models.
Example request and response payloads for these APIs.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
OAuth scopes governing access to this provider's APIs.
Recommended x-agentic-access execution contracts for AI agents.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 15
Reference material describing how the API behaves
Scroll 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 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 2
The organization behind the API
Other 1
Properties that don't map to a standard resource type
Source (apis.yml)
aid: factorial-hr
url: https://raw.githubusercontent.com/api-evangelist/factorial-hr/refs/heads/main/apis.yml
apis:
- aid: factorial:factorial-webhooks-api
name: Factorial Webhooks API
tags:
- HR
- Webhooks
- Events
humanURL: https://apidoc.factorialhr.com/docs/manage-webhooks
properties:
- url: https://apidoc.factorialhr.com/docs/manage-webhooks
type: Documentation
- url: https://apidoc.factorialhr.com/docs/webhooks-policies
type: Documentation
- url: https://apidoc.factorialhr.com/docs/webhooks-what
type: Documentation
- url: https://apidoc.factorialhr.com/docs/webhook-attendance-clock-in
type: Documentation
- url: json-schema/factorial-webhook-subscription-schema.json
type: JSONSchema
description: Subscribe to lifecycle events fired by Factorial (employee created, employee terminated, attendance clock-in/out,
ATS application created/updated, time-off leave created/approved, document created, etc.). Factorial POSTs the event payload
to your target URL and retries on failure; consumer endpoints must be idempotent.
- aid: factorial:factorial-ats-api
name: Factorial ATS API
tags:
- HR
- Recruiting
- ATS
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Applicant Tracking surface — Candidates, Applications, Application Phases, Job Postings, Feedback, Evaluation
Forms, Answers. Read, create, update, and delete candidates and applications, plus phase progression and structured feedback
collection. Part of the dated 2026-04-01 resource API.
- aid: factorial:factorial-attendance-api
name: Factorial Attendance API
tags:
- HR
- Time
- Attendance
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: 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 identify themselves on clock operations.
- aid: factorial:factorial-time-off-api
name: Factorial Time Off API
tags:
- HR
- Time Off
- PTO
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: 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 programmatically approve or reject pending leaves.
- aid: factorial:factorial-contracts-compensations-api
name: Factorial Contracts and Compensations API
tags:
- HR
- Contracts
- Compensation
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: 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, professional_category_description) in favour of job_catalog_tree_node_uuid,
and adds richer fields for German and Spanish payroll integrations.
- aid: factorial:factorial-payroll-api
name: Factorial Payroll API
tags:
- HR
- Payroll
- Finance
humanURL: https://apidoc.factorialhr.com/docs/payroll-integrations
properties:
- url: https://apidoc.factorialhr.com/docs/payroll-integrations
type: Documentation
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Payroll supplements, payroll identifiers, family situations, and bookkeeper resources. Backs Factorial's integrations
with country- specific payroll engines.
- aid: factorial:factorial-finance-banking-api
name: Factorial Finance and Banking API
tags:
- Finance
- Banking
- Accounting
humanURL: https://apidoc.factorialhr.com/docs/finance-integrations
properties:
- url: https://apidoc.factorialhr.com/docs/finance-integrations
type: Documentation
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Bank accounts, transactions, ledger accounts, journal entries, tax rates and tax types, cost centers, cost
center memberships, and budgets. Cost center memberships are bulk-updatable so percentage splits can be applied atomically
per employee.
- aid: factorial:factorial-expenses-api
name: Factorial Expenses API
tags:
- Finance
- Expenses
- Mileage
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Submit, approve, and reconcile employee expenses, mileage claims, and per-diem requests.
- aid: factorial:factorial-documents-api
name: Factorial Documents API
tags:
- HR
- Documents
- E-Signature
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Manage company- and employee-scoped documents and folders. Create, update, retrieve, and delete documents,
request legal e-signatures, and fire document_created webhook events. Admin-only for document creation.
- aid: factorial:factorial-performance-api
name: Factorial Performance API
tags:
- HR
- Performance
- Talent
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Performance reviews, review processes, evaluations, and performance agreements. Configurable review cycles
backed by the Job Catalog Tree introduced in v2026-01-01.
- aid: factorial:factorial-trainings-api
name: Factorial Trainings API
tags:
- HR
- Training
- Learning
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Manage training programs and training classes, expanded in v2026-04-01 with new class-level capabilities.
- aid: factorial:factorial-job-catalog-api
name: Factorial Job Catalog API
tags:
- HR
- Job Catalog
- Levels
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: 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.
- aid: factorial:factorial-project-management-api
name: Factorial Project Management API
tags:
- Projects
- Tasks
- Time Tracking
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Projects, subprojects, tasks, project workers, planned and flexible time records, and budget strategies (full
CRUD added in v2026-04-01).
- aid: factorial:factorial-it-management-api
name: Factorial IT Management API
tags:
- IT
- Asset Management
- MDM
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: IT asset and IT model endpoints (added in v2026-01-01) backing the SaaS, Inventory, MDM, and Cybersecurity
modules.
- aid: factorial:factorial-procurement-api
name: Factorial Procurement API
tags:
- Procurement
- Purchase Orders
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Purchase orders, purchase requests, and purchase types. Added in v2026-01-01.
- aid: factorial:factorial-approvals-api
name: Factorial Approvals API
tags:
- Workflows
- Approvals
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: 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.
- aid: factorial:factorial-locations-holidays-api
name: Factorial Locations and Holidays API
tags:
- HR
- Locations
- Holidays
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Company locations, work areas, and company holidays.
- aid: factorial:factorial-posts-communities-api
name: Factorial Posts and Communities API
tags:
- Communities
- Posts
- Communication
humanURL: https://apidoc.factorialhr.com/reference
properties:
- url: https://apidoc.factorialhr.com/reference
type: Documentation
description: Groups, posts, and comments backing the Communities V2 feature. Requires Communities V2 to be enabled on the
company.
- aid: factorial:factorial-marketplace-integrations-api
name: Factorial Marketplace and Integrations API
tags:
- Integrations
- Marketplace
humanURL: https://apidoc.factorialhr.com/docs/integrations-framework
properties:
- url: https://apidoc.factorialhr.com/docs/integrations-framework
type: Documentation
description: Integrations Framework and Marketplace endpoints used by partner integrations to register, surface, and operate
within the Factorial app.
- aid: factorial:factorial-keys-oauth-api
name: Factorial Keys and OAuth API
tags:
- Authentication
- OAuth2
- API Keys
humanURL: https://apidoc.factorialhr.com/docs/authentication
properties:
- url: https://apidoc.factorialhr.com/docs/api-keys
type: Documentation
- url: https://apidoc.factorialhr.com/docs/oauth-2
type: Documentation
- url: https://apidoc.factorialhr.com/docs/oauth-scopes
type: Documentation
- url: https://apidoc.factorialhr.com/docs/create-a-new-oauth-application
type: Documentation
- url: https://apidoc.factorialhr.com/docs/oauth2-partner-guide
type: Documentation
description: 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 used to act on behalf of the company with full admin
access. API Keys overrule OAuth tokens when both are present on the same request.
- aid: factorial-hr:factorial-hr-core-employees-v2-api
name: Factorial Core::Employees::V2 API
description: The Core::Employees::V2 API from Factorial — 2 operation(s) for core::employees::v2.
humanURL: https://apidoc.factorialhr.com/reference
tags:
- Core::Employees::V2
properties:
- type: OpenAPI
url: openapi/factorial-hr-core-employees-v2-api-openapi.yml
- type: Documentation
url: https://apidoc.factorialhr.com/
- type: Documentation
url: https://apidoc.factorialhr.com/reference
- type: JSONSchema
url: json-schema/factorial-employee-schema.json
- type: JSONLD
url: json-ld/factorial-hr-context.jsonld
- type: Examples
url: examples/factorial-list-employees-example.json
- type: Examples
url: examples/factorial-create-employee-example.json
- type: Examples
url: examples/factorial-get-current-user-example.json
- aid: factorial-hr:factorial-hr-core-me-api
name: Factorial Core::Me API
description: The Core::Me API from Factorial — 1 operation(s) for core::me.
humanURL: https://apidoc.factorialhr.com/reference
tags:
- Core::Me
properties:
- type: OpenAPI
url: openapi/factorial-hr-core-me-api-openapi.yml
- type: Documentation
url: https://apidoc.factorialhr.com/
- type: Documentation
url: https://apidoc.factorialhr.com/reference
- type: JSONSchema
url: json-schema/factorial-employee-schema.json
- type: JSONLD
url: json-ld/factorial-hr-context.jsonld
- type: Examples
url: examples/factorial-list-employees-example.json
- type: Examples
url: examples/factorial-create-employee-example.json
- type: Examples
url: examples/factorial-get-current-user-example.json
name: Factorial
tags:
- HR
- Human Resources
- Payroll
- Time Off
- Time Tracking
- ATS
- Performance
- Finance
- Expenses
- Spain
- Barcelona
- All-in-One
kind: contract
accessModel:
pricing: paid
onboarding: self-serve
trial: false
try_now: false
public: false
label: Paid · Self-serve signup
confidence: high
source:
- plans
- authentication
generated: '2026-07-22'
method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/factorial-hr.png
access: 3rd-Party
common:
- type: AgenticAccess
url: agentic-access/factorial-hr-agentic-access.yml
- type: TrustCenter
url: security/factorial-hr-trust-center.yml
- type: VulnerabilityDisclosure
url: security/factorial-hr-vulnerability-disclosure.yml
- type: DomainSecurity
url: security/factorial-hr-domain-security.yml
- type: Authentication
url: authentication/factorial-hr-authentication.yml
- type: OAuthScopes
url: scopes/factorial-hr-scopes.yml
- type: Portal
url: https://factorialhr.com
- type: Documentation
url: https://apidoc.factorialhr.com/
- type: Documentation
name: API Reference
url: https://apidoc.factorialhr.com/reference
- type: GettingStarted
url: https://apidoc.factorialhr.com/docs/getting-started
- type: Documentation
name: First Steps
url: https://apidoc.factorialhr.com/docs/first-steps
- type: Documentation
name: Authentication
url: https://apidoc.factorialhr.com/docs/authentication
- type: Documentation
name: OAuth 2
url: https://apidoc.factorialhr.com/docs/oauth-2
- type: Documentation
name: OAuth Scopes
url: https://apidoc.factorialhr.com/docs/oauth-scopes
- type: Documentation
name: API Keys
url: https://apidoc.factorialhr.com/docs/api-keys
- type: Documentation
name: API Versioning
url: https://apidoc.factorialhr.com/docs/api-versioning
- type: Documentation
name: Production and Demo Environments
url: https://apidoc.factorialhr.com/docs/production-and-demo
- type: Documentation
name: Pagination
url: https://apidoc.factorialhr.com/docs/pagination
- type: Documentation
name: FAQs
url: https://apidoc.factorialhr.com/docs/faqs
- type: ChangeLog
url: https://apidoc.factorialhr.com/changelog
- type: Webhooks
url: https://apidoc.factorialhr.com/docs/manage-webhooks
- type: Documentation
name: Webhooks Policies
url: https://apidoc.factorialhr.com/docs/webhooks-policies
- type: Documentation
name: Integrations Framework
url: https://apidoc.factorialhr.com/docs/integrations-framework
- type: Documentation
name: Payroll Integrations
url: https://apidoc.factorialhr.com/docs/payroll-integrations
- type: Documentation
name: Finance Integrations
url: https://apidoc.factorialhr.com/docs/finance-integrations
- type: Pricing
url: https://factorialhr.com/pricing
- type: Signup
url: https://factorialhr.com/signup
- type: Login
url: https://app.factorialhr.com/users/sign_in
- type: StatusPage
url: https://factorial.statuspage.io/
- type: Blog
url: https://factorialhr.com/blog
- type: Customers
url: https://factorialhr.com/customers
- type: Support
url: https://apidoc.factorialhr.com/docs/contact-page
- type: GitHubOrganization
url: https://github.com/factorialco
- type: SDKs
name: OpenAPI Schema Repository
url: https://github.com/factorialco/oas
- type: SDKs
name: Ruby SDK (generated)
url: https://github.com/factorialco/oas/tree/main/sdk-ruby
- type: SDKs
name: Python SDK (generated)
url: https://github.com/factorialco/oas/tree/main/sdk-python
- type: SDKs
name: Java SDK (generated)
url: https://github.com/factorialco/oas/tree/main/sdk-java
- type: SDKs
name: PHP SDK (generated)
url: https://github.com/factorialco/oas/tree/main/sdk-php
- type: SDKs
name: TypeScript Axios SDK (generated)
url: https://github.com/factorialco/oas/tree/main/sdk-typescript-axios
- type: SDKs
name: Node.js Server SDK (generated)
url: https://github.com/factorialco/oas/tree/main/sdk-nodejs-server
- type: Tools
name: f0 Design System
url: https://github.com/factorialco/f0
- type: PrivacyPolicy
url: https://factorialhr.com/privacy-policy
- type: TermsOfService
url: https://factorialhr.com/terms-and-conditions
- type: LinkedIn
url: https://www.linkedin.com/company/factorial-hr/
- type: Plans
url: plans/factorial-plans-pricing.yml
- type: RateLimits
url: rate-limits/factorial-rate-limits.yml
- type: FinOps
url: finops/factorial-finops.yml
- type: SpectralRules
url: rules/factorial-rules.yml
- type: Vocabulary
url: vocabulary/factorial-hr-vocabulary.yml
- type: Features
data:
- All-in-one HR, payroll, time, finance, talent, and IT modules
- Public REST API with dated, major-versioned releases (current 2026-04-01 "Legendre")
- Two auth schemes - OAuth2 authorization code on behalf of a user and x-api-key on behalf of the company
- 30+ OAuth scopes for fine-grained partner access
- Production and Demo environments (api.factorialhr.com vs api.demo.factorialhr.com)
- 681+ documented endpoints across 30+ resource domains
- Webhook subscriptions with documented event catalogue and retry policy
- Approvals API for programmatic approve/reject of pending workflows
- Job Catalog Tree replacing free-text job titles on contracts
- Bulk endpoints (e.g. cost-center memberships) to reduce roundtrips
- Integrations Framework, Payroll and Finance Integrations partner programs
- Marketplace surface for distributing partner integrations inside the Factorial app
- Officially generated SDKs for Ruby, Python, Java, PHP, TypeScript (axios), and Node.js server
- llms.txt endpoint for AI agents at https://apidoc.factorialhr.com/llms.txt
- 16,000+ companies on platform; HQ in Barcelona, Spain
sources:
- https://factorialhr.com
- https://apidoc.factorialhr.com/
- https://apidoc.factorialhr.com/changelog
- https://github.com/factorialco/oas
updated: '2026-05-25'
created: '2026-05-25'
modified: '2026-05-25'
position: Consuming
description: 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.
maintainers:
- FN: Kin Lane
email: info@apievangelist.com
X: apievangelist
url: https://apievangelist.com
specificationVersion: '0.16'