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 6 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...65.9 Employment Hero REST APIVersioned REST API (v1) for accessing Employment Hero HR, payroll, and employee data including organisation...60.9 Oracle E-Business Suite Payroll APIPayroll processing and run results58.4 QuickBooks Payroll and Time APIThe QuickBooks Payroll and Time API provides programmatic access to payroll and time-tracking data within Q...57.7 XRPay Payroll APIThe Payroll API from XRPay — 9 operation(s) for payroll.56.6 Mindbody Payroll APIPayroll operations.56.1

Developing 27 Usable, with meaningful gaps to close

ServiceTitan Payroll APIManage payroll adjustments, gross-pay items, job splits, timesheet codes, activity codes, non-job timesheet...54.0 ServiceTitan Timesheets APIRead and write timesheet entries, activity codes, and shift segments tying technician time to jobs, non-job...54.0 Oyster HR Payroll APIThe Payroll API from Oyster HR — 3 operation(s) for payroll.51.0 Deskera People APIAPI for Deskera People, the HR, payroll and employee-self-service product — employees, teams, shifts, atten...50.1 PeopleSoft Global Payroll APIREST API endpoints for the Global Payroll skill, providing access to payroll data, product profile informat...49.8 PeopleSoft Payroll APIPayroll operations49.8 PeopleSoft Payroll for North America APIDelivered REST API endpoints for retrieving paycheck header details, earnings, deductions, taxes, direct de...49.8 Factorial Developer APIVersioned REST API for managing employees, contracts, leaves, attendance shifts, time off, documents, and o...48.4 Factorial Payroll APIPayroll supplements, payroll identifiers, family situations, and bookkeeper resources. Backs Factorial's in...48.4 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...47.8 Check Payroll APIThe Check Payroll API is a comprehensive REST API for embedding end-to-end U.S. payroll inside another plat...47.7 Aerones Payroll APIThe payroll API from Aerones — 3 operation(s) for payroll.47.0 Workday Studio Payroll APIWeb service operations for payroll processing, tax management, compensation calculations, and pay component...46.5 Workday Integration Payroll APIThe Payroll API from Workday Integration — 1 operation(s) for payroll.45.6 Aramark Payroll APIThe Payroll API from Aramark — 2 operation(s) for payroll.45.5 PlanSource Payroll APIPayroll coverages data.45.5 Optibus Payroll APIThe Payroll API from Optibus — 1 operation(s) for payroll.45.1 Oracle Fusion Cloud Applications Payroll APIPayroll processing and results43.9 ADP Embedded Payroll (RUN)ADP Embedded Payroll lets a software platform embed complete RUN Powered by ADP payroll screens — "Journeys...43.8 ADP Embedded Payroll APIThe ADP Embedded Payroll API enables ISVs and platforms to embed ADP payroll capabilities directly into the...43.8 Humanity Payroll APIThe Payroll API from Humanity — 3 operation(s) for payroll.43.7 Request Finance AP and AR APIThe Accounts Payable and Receivable REST API for issuing invoices, accepting crypto and fiat payments, runn...43.6 Justworks Deductions APIManage employee deductions — list deduction types, create one-time and recurring deductions, update existin...42.3 Codat Sync for Payroll APIThe Codat Sync for Payroll API enables HR, payroll, and vertical SaaS platforms to integrate their customer...42.1 HMRC PAYE (Pay As You Earn) APIThe HMRC PAYE APIs enable payroll software to submit employer payroll data, retrieve tax codes and employee...41.2 Leapsome Payroll APIThe payroll API from Leapsome — 2 operation(s) for payroll.39.8

Thin 18 Limited public surface area

Finch Payroll APIThe Payroll API from Finch — 8 operation(s) for payroll.39.0 bexio Payroll APIThe Payroll API from bexio — 2 operation(s) for payroll.38.7 Puzzle Payroll APIThe Payroll API from Puzzle — 6 operation(s) for payroll.37.6 Gusto Embedded Payroll APIThe Gusto Embedded Payroll API enables platforms to build and embed modern payroll, benefits, and HR toolin...37.2 Planday APIPlanday's REST API secured by OAuth2 bearer tokens, separated into domains (HR, Absence, Pay, Payroll, Port...36.6 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...32.5 Rippling Payroll APIPush earnings, deductions, and reimbursements into Rippling Payroll for off-cycle and on-cycle pay runs, an...31.0 FDX Payroll APIRESTful endpoints introduced in FDX API v6.0 for retrieving permissioned payroll data including employment ...30.9 Paylocity Integrations REST APIREST API for managing employees, demographics, status, pay rates, direct deposit, deductions, earnings, tax...30.5 Paylocity Payroll APIThe Payroll API from Paylocity — 3 operation(s) for payroll.30.5 UKG Payroll APIPayroll data and check history30.5 NOWPayments Mass Payouts APIBulk cryptocurrency payout API enabling merchants to initiate thousands of transactions to different addres...30.4 Keka HR Payroll APIThe Payroll API from Keka HR — 11 operation(s) for payroll.29.0 Nmbrs SOAP CompanyService (Legacy)Legacy SOAP v3 CompanyService (120+ operations, e.g. Company_GetCurrentPeriod, Run_GetList, RunRequest_Inse...28.7 PayFit Customer APIPrivate REST API for PayFit customers to access their own company data via long-lived private API keys, sui...27.4 PayFit Partner APIOAuth 2.0 REST API for solution developers building integrations with PayFit. Once enabled by a customer, p...27.4 freee Payroll APIEmployee payroll statements (給与明細) and bonuses.26.7

Emerging 33 Early or largely undocumented

Homebase APIThe Homebase REST API provides programmatic access to employee scheduling, time tracking, payroll synchroni...25.7 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 Unit4 ERPx REST APIComprehensive REST API for Unit4 ERPx cloud ERP platform covering time and expenses, personnel, payroll, pr...23.4 MYOB Business APIREST-based cloud API for MYOB AccountRight, MYOB Essentials, and MYOB Business. Provides endpoints for mana...23.3 UKG Pro HCM APIREST API for the UKG Pro HCM suite covering people, benefits, payroll, talent, recruiting, onboarding, and ...22.2 Velocity Global APIREST API for managing global employment operations including international hiring, employee records, payrol...21.3 TriNet Zenefits REST APIREST API providing programmatic access to people, companies, locations, employments, compensation, time-off...20.9 Perpay Payroll Direct-Deposit APIREST integration layer built on Pinwheel's payroll connectivity API. Supports direct-deposit switching, inc...20.6 Multiplier Contracts APIEmployment and contractor agreement data - contract generation, terms, and lifecycle status - made availabl...20.4 Multiplier Invoices APIConsolidated invoice and billing data for employment, payroll, and contractor services. Available to integr...20.4 Multiplier Members APIToken-authenticated synchronization of Multiplier members - employees and contractors - and their profile, ...20.4 Multiplier Payments APIPayment and disbursement data for members and contractors. Available to integrations under account-provisio...20.4 Multiplier Payroll APIMulti-country payroll data sync - salary, compensation changes, and payroll runs across 120+ currencies. Su...20.4 Multiplier Time Off APILeave requests, balances, and regional holiday data with per-country leave policy rules, plus timesheets. M...20.4 G-P EOR APIProvides capabilities for accessing and managing employee and employment data within the G-P Employer of Re...20.3 Miter REST APIMiter exposes a REST API used to build custom integrations between the Miter HCM platform and construction ...18.7 Rates and Limits JSON APIKeyless, unauthenticated REST-style JSON API serving US tax, payroll, benefits, and wage figures with bundl...18.3 TriNet Payroll APIThe TriNet Payroll API provides access to employee payroll and compensation data including pay rates, pay f...16.9 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 Heartland Payroll APIHeartland's Payroll APIs support employee payroll processing, tax filings, and HR integrations for small to...14.6 Insperity Payroll & Tax APIUpdate an employee's compensation and retrieve general ledger information post payroll. Three published ope...14.3 Darwinbox APIREST API for Darwinbox HRMS covering employee management, attendance, recruitment, organizational managemen...14.1 TranZak Bulk Payments APIREST API for sending bulk payments to up to 2,000 recipients in a single request. Supports file-based uploa...13.6 Paycor Public API v1REST API for accessing Paycor employees, payroll, benefits, time, and organizational data. Uses OAuth 2.0 a...11.3

Minimal 2 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 Playroll Global Payroll APIRun and consolidate global payroll across entities and countries, with statutory calculations and local pay...9.0

Companies reaching this through an API (20)

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.

Score breakdown

Frequency

66.5

log-scaled weighted occurrences

Breadth

4.2

spread across providers

Quality lift

29.4

mean composite of providers using it

Cohesion

10.9

strength of nearest seed neighbor

Where this tag sits

186 providers carry this tag directly, and 190 counting the 2 narrower tags below — 4 more to reach.

Global Payroll 7 providers Payroll Tax 0 providers

Where this tag comes from

Provider tag188

Api tag81

Openapi tag26

Openapi op tag69

Markets provisional

Kin Score markets whose measured providers carry this tag. Share is the fraction of the market's measured providers that carry it — it describes the market, not this tag.

Market	Share of the market's providers
HR and Payroll	64%
Accounting and Finance Ops	20%

Cohort brief

Auto-generated

The 183 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

183

of 186 in the catalog

Mean Kin Score

28.5

+6.3 vs catalog 22.2

Mean Agent Readiness

16.8

+4.8 vs catalog 12

Spread

2.5–84.5

median 25.7 · σ 16.5

How the 183 split by band

Exemplar 2Strong 9Developing 41Thin 39Emerging 64Minimal 28

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Quality	25	17.2	+7.8	183
Access Clarity	31.3	23.9	+7.4	183
Developer Ergonomics	28.9	23.2	+5.7	183
Discoverability	63.4	57.9	+5.5	183
Operational Transparency	17.9	13	+4.9	183
Contract Governance	8.6	6.5	+2.1	183

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)	14%	13%	+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	18%	16%	+2

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 Xero 84.5
2 Bindbee 69.3
3 Remote 66.3
4 Visma 64.7
5 Kota 61.4
6 Employment Hero 60.9
7 Smart Pension 60.3
8 FlowAccount 59.3
9 Intuit 57.7
10 Wingspan 56.5

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Tools for tags

7 MCP tools reach this

find_tagsBrowse and filter every tag in the catalog.
get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
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 (186)

APIs with this tag (86)