Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Strong 4 Solid coverage with minor gaps

Oracle Fusion Cloud HCM REST APIREST APIs for viewing and managing human capital management data including workers, talent management, payr...66.0 Mindbody Payroll APIPayroll operations.63.4 Oracle E-Business Suite Payroll APIPayroll processing and run results59.3 QuickBooks Payroll and Time APIThe QuickBooks Payroll and Time API provides programmatic access to payroll and time-tracking data within Q...59.2

Developing 26 Usable, with meaningful gaps to close

ServiceTitan Payroll APIManage payroll adjustments, gross-pay items, job splits, timesheet codes, activity codes, non-job timesheet...53.6 ServiceTitan Timesheets APIRead and write timesheet entries, activity codes, and shift segments tying technician time to jobs, non-job...53.6 Factorial Developer APIVersioned REST API for managing employees, contracts, leaves, attendance shifts, time off, documents, and o...52.8 Factorial Payroll APIPayroll supplements, payroll identifiers, family situations, and bookkeeper resources. Backs Factorial's in...52.8 PeopleSoft Global Payroll APIREST API endpoints for the Global Payroll skill, providing access to payroll data, product profile informat...50.9 PeopleSoft Payroll APIPayroll operations50.9 PeopleSoft Payroll for North America APIDelivered REST API endpoints for retrieving paycheck header details, earnings, deductions, taxes, direct de...50.9 Deskera People APIAPI for Deskera People, the HR, payroll and employee-self-service product — employees, teams, shifts, atten...50.1 KolayIK Payroll APIThe Payroll API from KolayIK — 2 operation(s) for payroll.48.3 Dynamics 365 Human Resources APIAPI for managing human resources operations including employee data, payroll integration, applicant trackin...48.2 Workday Studio Payroll APIWeb service operations for payroll processing, tax management, compensation calculations, and pay component...48.1 Workday Integration Payroll APIThe Payroll API from Workday Integration — 1 operation(s) for payroll.46.7 Justworks Deductions APIManage employee deductions — list deduction types, create one-time and recurring deductions, update existin...46.6 Aerones Payroll APIThe payroll API from Aerones — 3 operation(s) for payroll.46.5 Aramark Payroll APIThe Payroll API from Aramark — 2 operation(s) for payroll.46.5 bexio Payroll APIThe Payroll API from bexio — 2 operation(s) for payroll.46.1 Puzzle Payroll APIThe Payroll API from Puzzle — 6 operation(s) for payroll.46.0 Leapsome Payroll APIThe payroll API from Leapsome — 2 operation(s) for payroll.45.9 PlanSource Payroll APIPayroll coverages data.45.4 Optibus Payroll APIThe Payroll API from Optibus — 1 operation(s) for payroll.45.0 Oracle Fusion Cloud Applications Payroll APIPayroll processing and results45.0 ADP Embedded Payroll (RUN)ADP Embedded Payroll lets a software platform embed complete RUN Powered by ADP payroll screens — "Journeys...44.8 ADP Embedded Payroll APIThe ADP Embedded Payroll API enables ISVs and platforms to embed ADP payroll capabilities directly into the...44.8 Request Finance AP and AR APIThe Accounts Payable and Receivable REST API for issuing invoices, accepting crypto and fiat payments, runn...43.6 Codat Sync for Payroll APIThe Codat Sync for Payroll API enables HR, payroll, and vertical SaaS platforms to integrate their customer...42.6 HMRC PAYE (Pay As You Earn) APIThe HMRC PAYE APIs enable payroll software to submit employer payroll data, retrieve tax codes and employee...40.9

Thin 20 Limited public surface area

FDX Payroll APIRESTful endpoints introduced in FDX API v6.0 for retrieving permissioned payroll data including employment ...38.9 Planday APIPlanday's REST API secured by OAuth2 bearer tokens, separated into domains (HR, Absence, Pay, Payroll, Port...36.6 Keka HR Payroll APIThe Payroll API from Keka HR — 11 operation(s) for payroll.36.5 Nmbrs SOAP CompanyService (Legacy)Legacy SOAP v3 CompanyService (120+ operations, e.g. Company_GetCurrentPeriod, Run_GetList, RunRequest_Inse...36.2 Gusto Embedded Payroll APIThe Gusto Embedded Payroll API enables platforms to build and embed modern payroll, benefits, and HR toolin...36.0 NOWPayments Mass Payouts APIBulk cryptocurrency payout API enabling merchants to initiate thousands of transactions to different addres...34.7 QuickBooks Payroll APIREST API for managing payroll, employees, paychecks, and payroll tax information within QuickBooks Online P...34.2 TIAA Payroll360 APITIAA Payroll360 enables direct API connections between HR and payroll systems and TIAA's plan administratio...33.8 freee Payroll APIEmployee payroll statements (給与明細) and bonuses.33.7 Employment Hero Payroll API (KeyPay)Employment Hero Payroll (formerly KeyPay) REST API for managing businesses, employees, pay runs, leave, tim...33.5 Employment Hero REST APIVersioned REST API (v1) for accessing Employment Hero HR, payroll, and employee data including organisation...33.5 Rippling Payroll APIPush earnings, deductions, and reimbursements into Rippling Payroll for off-cycle and on-cycle pay runs, an...32.5 Homebase APIThe Homebase REST API provides programmatic access to employee scheduling, time tracking, payroll synchroni...31.8 MYOB Business APIREST-based cloud API for MYOB AccountRight, MYOB Essentials, and MYOB Business. Provides endpoints for mana...31.6 UKG Payroll APIPayroll data and check history31.6 Paylocity Integrations REST APIREST API for managing employees, demographics, status, pay rates, direct deposit, deductions, earnings, tax...29.1 Paylocity Payroll APIThe Payroll API from Paylocity — 3 operation(s) for payroll.29.1 Oyster HR APIREST API for global employment operations including hiring, payroll, benefits, time off, expenses, invoicin...29.0 Perpay Payroll Direct-Deposit APIREST integration layer built on Pinwheel's payroll connectivity API. Supports direct-deposit switching, inc...26.7 Unit4 ERPx REST APIComprehensive REST API for Unit4 ERPx cloud ERP platform covering time and expenses, personnel, payroll, pr...26.3

Emerging 33 Early or largely undocumented

G-P EOR APIProvides capabilities for accessing and managing employee and employment data within the G-P Employer of Re...26.0 Multiplier Contracts APIEmployment and contractor agreement data - contract generation, terms, and lifecycle status - made availabl...26.0 Multiplier Invoices APIConsolidated invoice and billing data for employment, payroll, and contractor services. Available to integr...26.0 Multiplier Members APIToken-authenticated synchronization of Multiplier members - employees and contractors - and their profile, ...26.0 Multiplier Payments APIPayment and disbursement data for members and contractors. Available to integrations under account-provisio...26.0 Multiplier Payroll APIMulti-country payroll data sync - salary, compensation changes, and payroll runs across 120+ currencies. Su...26.0 Multiplier Time Off APILeave requests, balances, and regional holiday data with per-country leave policy rules, plus timesheets. M...26.0 PayFit Customer APIPrivate REST API for PayFit customers to access their own company data via long-lived private API keys, sui...25.6 PayFit Partner APIOAuth 2.0 REST API for solution developers building integrations with PayFit. Once enabled by a customer, p...25.6 Velocity Global APIREST API for managing global employment operations including international hiring, employee records, payrol...25.6 UKG Ready REST APIRESTful API for UKG Ready providing programmatic access to employees, HR records, payroll, time and attenda...25.2 Employee Navigator Partner APIThe Employee Navigator partner REST API program — the Company Integration API and the Company Benefit Detai...25.1 Payactiv Access-as-a-Service APIAccess-as-a-Service is Payactiv's API-driven infrastructure for embedding Earned Wage Access, debit and pay...24.9 UKG Pro HCM APIREST API for the UKG Pro HCM suite covering people, benefits, payroll, talent, recruiting, onboarding, and ...22.2 TriNet Zenefits REST APIREST API providing programmatic access to people, companies, locations, employments, compensation, time-off...20.9 Check Payroll APIThe Check Payroll API is a comprehensive REST API for embedding end-to-end U.S. payroll inside another plat...20.8 TranZak Bulk Payments APIREST API for sending bulk payments to up to 2,000 recipients in a single request. Supports file-based uploa...19.3 Miter REST APIMiter exposes a REST API used to build custom integrations between the Miter HCM platform and construction ...18.7 Darwinbox APIREST API for Darwinbox HRMS covering employee management, attendance, recruitment, organizational managemen...18.5 TriNet Payroll APIThe TriNet Payroll API provides access to employee payroll and compensation data including pay rates, pay f...18.5 Rates and Limits JSON APIKeyless, unauthenticated REST-style JSON API serving US tax, payroll, benefits, and wage figures with bundl...18.3 Playroll Global Payroll APIRun and consolidate global payroll across entities and countries, with statutory calculations and local pay...16.4 Heartland Payroll APIHeartland's Payroll APIs support employee payroll processing, tax filings, and HR integrations for small to...15.6 ADPADP is the largest payroll and HCM provider with the ADP Marketplace and ADP Workforce Now / Run / Vantage ...15.5 FinchFinch is a unified API for employment systems (HRIS and payroll) covering employee, company, payment, pay-s...15.5 GustoGusto is a payroll, benefits, and HR platform for small business with a partner REST API for embedded payro...15.5 JustworksJustworks is a PEO platform providing payroll, benefits, and compliance with an HRIS API for partners and i...15.5 PaylocityPaylocity is a cloud payroll and HCM provider with a REST Web Services API for employees, payroll, benefits...15.5 RipplingRippling is a workforce platform unifying HR, IT, and Finance with a public REST API covering employees, pa...15.5 UKG (Ultimate Kronos Group)UKG provides UKG Pro and UKG Ready HCM, workforce management, and payroll with a REST API and integration m...15.5 WorkdayWorkday is a cloud HCM, payroll, and finance suite with a Web Services / REST API catalog spanning Human Ca...15.5 Insperity Payroll & Tax APIUpdate an employee's compensation and retrieve general ledger information post payroll. Three published ope...14.3 Paycor Public API v1REST API for accessing Paycor employees, payroll, benefits, time, and organizational data. Uses OAuth 2.0 a...11.3

Minimal 1 Almost no public developer surface

ADP Workforce Now HCM APIHCM v2 REST API for accessing worker demographics, payroll, time and attendance, benefits, talent, and orga...9.5

Companies reaching this through an API (19)

These companies publish an API, specification or operation carrying “Payroll” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

Aerones Aramark bexio Codat HMRC UK Tax Authority Leapsome Microsoft Dynamics 365 Mindbody NOWPayments Optibus Oracle Oracle E-Business Suite Oracle Fusion Cloud Applications PeopleSoft Perpay ServiceTitan TIAA TranZak Workday Studio

Score breakdown

Frequency

67.0

log-scaled weighted occurrences

Breadth

4.8

spread across providers

Quality lift

35.0

mean composite of providers using it

Cohesion

12.5

strength of nearest seed neighbor

Where this tag sits

183 providers carry this tag directly, and 186 counting the 2 narrower tags below — 3 more to reach.

Global Payroll 7 providers Payroll Tax 0 providers

Where this tag comes from

Provider tag183

Api tag79

Openapi tag23

Openapi op tag46

Cohort brief

Auto-generated

The 180 providers in the APIs.io catalog tagged Payroll, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

180

all scored

Mean Kin Score

28.9

+6.0 vs catalog 22.9

Mean Agent Readiness

15.7

+3.8 vs catalog 11.9

Spread

2–73.7

median 28.5 · σ 16.3

How the 180 split by band

Exemplar 2Strong 8Developing 39Thin 46Emerging 58Minimal 27

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	35.8	26.5	+9.3	180
Contract Quality	23.9	17.6	+6.3	180
Developer Ergonomics	28.5	23.2	+5.3	180
Operational Transparency	18.7	13.7	+5	180
Discoverability	62.9	58.1	+4.8	180
Contract Governance	7.4	6.3	+1.1	180

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes

Artifact	This cohort	Catalog	Difference
MCP server (any)	15%	14%	+1
MCP server (first-party)	13%	12%	+1
Agent Skills	0%	0%	0
OAuth scopes	23%	11%	+12
Security	98%	98%	0
Arazzo workflows	3%	2%	+1
Governance rules	15%	14%	+1

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score

1 Remote 73.7
2 Bindbee 70.4
3 Visma 64.2
4 Deel 63.7
5 Kota 60.8
6 Smart Pension 59.7
7 FlowAccount 59.3
8 Intuit 59.2
9 Wingspan 56.5
10 Namely 56.4

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Tools for tags

7 MCP tools reach this

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cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
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apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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Payroll

Providers using this tag (183)

APIs with this tag (84)