Nmbrs

Nmbrs (Visma Nmbrs) is cloud HR and payroll software for the Netherlands and Sweden, widely used by employers, accountants, and payroll service providers. Nmbrs exposes its HRIS and payroll data through a public API in two generations. The current, forward-looking interface is a REST API served from https://api.nmbrsapp.com, authenticated with OAuth 2.0 (Authorization Code flow via identityservice.nmbrs.com) plus a per-product subscription key, with granular scopes over companies, employees, employments, salaries, wage components, payruns, and absences. The older SOAP API (api.nmbrs.nl/soap/v3 - EmployeeService, CompanyService, DebtorService) remains available for existing integrations but is deprecated and scheduled to be retired on 1 March 2027, after which REST is the only supported API.

Nmbrs publishes 10 API contracts indexed on the APIs.io network, including Absences API, Companies API, Employees API, and 7 more. Tagged areas include Human Resources, HRIS, Payroll, Employee Management, and Absence Management.

The Nmbrs catalog on APIs.io includes 1 Spectral governance ruleset.

Nmbrs’ developer surface includes authentication, documentation, API reference, signup flow, engineering blog, and 8 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

30.4/100 thin ▬ flat Agent 24/100 agent aware Front door AI 1/6 silent Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessPaid

1 published contract

Human Resources HRIS Payroll Employee Management Absence Management Netherlands Sweden SOAP REST

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Human Capital Management

BC-300

AbsencesEmployeesEmploymentsPay RunsSalaries

GET /api/companies/{companyId}/payruns GET /api/employees/{employeeId}/salaries GET /api/employees/{employeeId}/absences GET /api/employees/{employeeId}/employments

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 30.4/100 · thin

Contract Quality 9.4 / 19

Developer Ergonomics 4.8 / 15

Access Clarity 3.2 / 15

Operational Transparency 0.5 / 10

Contract Governance 1.2 / 9

Discoverability 5.0 / 8

Regulatory Posture 1.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Employment & Payroll regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 21.1 — up to +15.8 composite points
Developer Ergonomics scores 32.1 — up to +13.6 composite points
Contract Quality scores 50.2 — up to +12.5 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/nmbrs/apis.yml: open an issue on github.com/api-evangelist/nmbrs to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 4

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

REST

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

SOAP

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 10

Individual APIs this provider publishes, each with its own machine-readable definition.

Nmbrs SOAP EmployeeService (Legacy)

Legacy SOAP v3 EmployeeService (300+ operations, e.g. Employee_GetCurrent, Contract_GetAll, Salary_GetCurrent, Absence2_Insert, WageComponentFixed_Insert) authenticated with a u...

Nmbrs SOAP CompanyService (Legacy)

Legacy SOAP v3 CompanyService (120+ operations, e.g. Company_GetCurrentPeriod, Run_GetList, RunRequest_Insert, SalaryDocuments_GetAllPayslipsPDFByRunCompany, Journals_GetByRunCo...

Nmbrs SOAP DebtorService (Legacy)

Legacy SOAP v3 DebtorService for the accountant/debtor tier that owns companies (e.g. AccountantContact_GetList, Debtor_GetList). Deprecated - retiring 1 March 2027 in favor of ...

Nmbrs Absences API

Employee absence, leave, and sickness registrations.

Nmbrs Companies API

Company (employer) records within a Nmbrs environment.

Nmbrs Employees API

Employee records and their personal / HR information.

Nmbrs Employments API

Employment contracts and employment history for an employee.

Nmbrs Salaries API

Salary and wage information for an employee.

Nmbrs Wage Components API

Fixed and variable wage components used in payroll.

Nmbrs Pay Runs API

Payroll runs (payruns) and their results for a company.

Scroll for all 10

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Nmbrs Public REST API (HR & Payroll) Absences API

OPEN COLLECTION

Nmbrs Public REST API (HR & Payroll) Absences Companies API

OPEN COLLECTION

Nmbrs Public REST API (HR & Payroll) Absences Employees API

OPEN COLLECTION

Nmbrs Public REST API (HR & Payroll) Absences Employments API

OPEN COLLECTION

Nmbrs Public REST API (HR & Payroll) Absences Payruns API

OPEN COLLECTION

Nmbrs Public REST API (HR & Payroll) Absences Salaries API

OPEN COLLECTION

Nmbrs Public REST API (HR & Payroll) Absences Wage Components API

OPEN COLLECTION

Nmbrs Public REST API (HR & Payroll)

OPEN COLLECTION

Scroll for all 8

Nmbrs API pricing

Not yet checked against Nmbrs's own pricing page. Compiled by API Evangelist on 2026-07-11 from www.nmbrs.com/business/pricing; confirm before you rely on a figure.

Plan	Price
Essential paid	—
Advanced paid	—
Advanced Pro paid	—
Accountant / Payroll Service Provider enterprise	—

Plan details, limits and sources →

Rate limits

REST API Requests: tier-based (not published) requests
SOAP API Requests: fair-use (not published) requests

Compiled by API Evangelist, not yet checked against Nmbrs's documentation. Rate-limit details →

Pricing Plans 1

Published pricing tiers and plan structures.

Nmbrs Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Nmbrs Rate Limits

2 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Nmbrs

SLA

FinOps 1

Cost, billing, and metering signals for API financial operations.

Nmbrs Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Nmbrs API Rules

61 rules · 59 errors 1 warnings 1 info

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Nmbrs Authentication

oauth2/apiKey/soap-token · 3 schemes

SECURITY

Nmbrs Domain Security

HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Nmbrs Agentic Access

10 operations · 2 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: nmbrs
url: https://raw.githubusercontent.com/api-evangelist/nmbrs/refs/heads/main/apis.yml
name: Nmbrs
kind: company
description: Nmbrs (Visma Nmbrs) is cloud HR and payroll software for the Netherlands and Sweden, widely used by employers,
  accountants, and payroll service providers. Nmbrs exposes its HRIS and payroll data through a public API in two generations.
  The current, forward-looking interface is a REST API served from https://api.nmbrsapp.com, authenticated with OAuth 2.0
  (Authorization Code flow via identityservice.nmbrs.com) plus a per-product subscription key, with granular scopes over companies,
  employees, employments, salaries, wage components, payruns, and absences. The older SOAP API (api.nmbrs.nl/soap/v3 - EmployeeService,
  CompanyService, DebtorService) remains available for existing integrations but is deprecated and scheduled to be retired
  on 1 March 2027, after which REST is the only supported API.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nmbrs.png
x-docs-platform: stoplight
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-04
tags:
- Human Resources
- HRIS
- Payroll
- Employee Management
- Absence Management
- Netherlands
- Sweden
- SOAP
- REST
tags_raw:
- Human Resources
- HRIS
- Payroll
- Employee Management
- HR
- Absence Management
- Netherlands
- Sweden
- SOAP
- REST
created: '2026-07-11'
modified: '2026-07-11'
specificationVersion: '0.23'
apis:
- aid: nmbrs:nmbrs-soap-employee-service
  name: Nmbrs SOAP EmployeeService (Legacy)
  tags:
  - SOAP
  - HRIS
  - Legacy
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.nmbrs.nl/soap/v3/EmployeeService.asmx
  baseURL: https://api.nmbrs.nl/soap/v3
  properties:
  - url: https://support.nmbrs.nl/hc/nl/articles/205903718-Nmbrs-API-for-developers
    type: Documentation
  - url: https://api.nmbrs.nl/soap/v3/EmployeeService.asmx
    type: APIReference
  - url: https://api.nmbrs.nl/soap/v3/EmployeeService.asmx?WSDL
    type: WSDL
  description: Legacy SOAP v3 EmployeeService (300+ operations, e.g. Employee_GetCurrent, Contract_GetAll, Salary_GetCurrent,
    Absence2_Insert, WageComponentFixed_Insert) authenticated with a username + API token. Deprecated - Nmbrs SOAP API is
    scheduled to be retired on 1 March 2027; migrate to the REST API.
- aid: nmbrs:nmbrs-soap-company-service
  name: Nmbrs SOAP CompanyService (Legacy)
  tags:
  - SOAP
  - Payroll
  - Legacy
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.nmbrs.nl/soap/v3/CompanyService.asmx
  baseURL: https://api.nmbrs.nl/soap/v3
  properties:
  - url: https://support.nmbrs.nl/hc/nl/articles/205903718-Nmbrs-API-for-developers
    type: Documentation
  - url: https://api.nmbrs.nl/soap/v3/CompanyService.asmx
    type: APIReference
  - url: https://api.nmbrs.nl/soap/v3/CompanyService.asmx?WSDL
    type: WSDL
  description: Legacy SOAP v3 CompanyService (120+ operations, e.g. Company_GetCurrentPeriod, Run_GetList, RunRequest_Insert,
    SalaryDocuments_GetAllPayslipsPDFByRunCompany, Journals_GetByRunCompany, WageTax_GetList) for company-level payroll, journals,
    and payslip documents. Deprecated - retiring 1 March 2027.
- aid: nmbrs:nmbrs-soap-debtor-service
  name: Nmbrs SOAP DebtorService (Legacy)
  tags:
  - SOAP
  - Debtors
  - Legacy
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://api.nmbrs.nl/soap/v3/DebtorService.asmx
  baseURL: https://api.nmbrs.nl/soap/v3
  properties:
  - url: https://support.nmbrs.nl/hc/nl/articles/205903718-Nmbrs-API-for-developers
    type: Documentation
  - url: https://api.nmbrs.nl/soap/v3/DebtorService.asmx
    type: APIReference
  - url: https://api.nmbrs.nl/soap/v3/DebtorService.asmx?WSDL
    type: WSDL
  description: Legacy SOAP v3 DebtorService for the accountant/debtor tier that owns companies (e.g. AccountantContact_GetList,
    Debtor_GetList). Deprecated - retiring 1 March 2027 in favor of the REST API.
- aid: nmbrs:nmbrs-absences-api
  name: Nmbrs Absences API
  description: Employee absence, leave, and sickness registrations.
  humanURL: https://developer.nmbrs.com/docs
  baseURL: https://api.nmbrsapp.com
  tags:
  - Absences
  properties:
  - type: OpenAPI
    url: openapi/nmbrs-absences-api-openapi.yml
  - type: Documentation
    url: https://developer.nmbrs.com/docs
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
  - type: PostmanCollection
    url: collections/nmbrs.postman_collection.json
  - type: OpenCollection
    url: collections/nmbrs.opencollection.json
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi/a31578b069764-get-employee-list
- aid: nmbrs:nmbrs-companies-api
  name: Nmbrs Companies API
  description: Company (employer) records within a Nmbrs environment.
  humanURL: https://developer.nmbrs.com/docs
  baseURL: https://api.nmbrsapp.com
  tags:
  - Companies
  properties:
  - type: OpenAPI
    url: openapi/nmbrs-companies-api-openapi.yml
  - type: Documentation
    url: https://developer.nmbrs.com/docs
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
  - type: PostmanCollection
    url: collections/nmbrs.postman_collection.json
  - type: OpenCollection
    url: collections/nmbrs.opencollection.json
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi/a31578b069764-get-employee-list
- aid: nmbrs:nmbrs-employees-api
  name: Nmbrs Employees API
  description: Employee records and their personal / HR information.
  humanURL: https://developer.nmbrs.com/docs
  baseURL: https://api.nmbrsapp.com
  tags:
  - Employees
  properties:
  - type: OpenAPI
    url: openapi/nmbrs-employees-api-openapi.yml
  - type: Documentation
    url: https://developer.nmbrs.com/docs
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
  - type: PostmanCollection
    url: collections/nmbrs.postman_collection.json
  - type: OpenCollection
    url: collections/nmbrs.opencollection.json
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi/a31578b069764-get-employee-list
- aid: nmbrs:nmbrs-employments-api
  name: Nmbrs Employments API
  description: Employment contracts and employment history for an employee.
  humanURL: https://developer.nmbrs.com/docs
  baseURL: https://api.nmbrsapp.com
  tags:
  - Employments
  properties:
  - type: OpenAPI
    url: openapi/nmbrs-employments-api-openapi.yml
  - type: Documentation
    url: https://developer.nmbrs.com/docs
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
  - type: PostmanCollection
    url: collections/nmbrs.postman_collection.json
  - type: OpenCollection
    url: collections/nmbrs.opencollection.json
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi/a31578b069764-get-employee-list
- aid: nmbrs:nmbrs-salaries-api
  name: Nmbrs Salaries API
  description: Salary and wage information for an employee.
  humanURL: https://developer.nmbrs.com/docs
  baseURL: https://api.nmbrsapp.com
  tags:
  - Salaries
  properties:
  - type: OpenAPI
    url: openapi/nmbrs-salaries-api-openapi.yml
  - type: Documentation
    url: https://developer.nmbrs.com/docs
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
  - type: PostmanCollection
    url: collections/nmbrs.postman_collection.json
  - type: OpenCollection
    url: collections/nmbrs.opencollection.json
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi/a31578b069764-get-employee-list
- aid: nmbrs:nmbrs-wage-components-api
  name: Nmbrs Wage Components API
  description: Fixed and variable wage components used in payroll.
  humanURL: https://developer.nmbrs.com/docs
  baseURL: https://api.nmbrsapp.com
  tags:
  - Wage Components
  properties:
  - type: OpenAPI
    url: openapi/nmbrs-wage-components-api-openapi.yml
  - type: Documentation
    url: https://developer.nmbrs.com/docs
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
  - type: PostmanCollection
    url: collections/nmbrs.postman_collection.json
  - type: OpenCollection
    url: collections/nmbrs.opencollection.json
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi/a31578b069764-get-employee-list
- aid: nmbrs:nmbrs-pay-runs-api
  name: Nmbrs Pay Runs API
  description: Payroll runs (payruns) and their results for a company.
  humanURL: https://api.nmbrs.nl/soap/v3/EmployeeService.asmx
  baseURL: https://api.nmbrs.nl/soap/v3
  tags:
  - Pay Runs
  properties:
  - type: OpenAPI
    url: openapi/nmbrs-pay-runs-api-openapi.yml
  - type: Documentation
    url: https://developer.nmbrs.com/docs
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
  - type: PostmanCollection
    url: collections/nmbrs.postman_collection.json
  - type: OpenCollection
    url: collections/nmbrs.opencollection.json
  - type: APIReference
    url: https://nmbrs.stoplight.io/docs/nmbrs-restapi/a31578b069764-get-employee-list
common:
- type: CapabilityMap
  url: capabilities/nmbrs-capability-edges.yml
  name: Nmbrs Business Capability Map
- type: AgenticAccess
  url: agentic-access/nmbrs-agentic-access.yml
- type: Authentication
  url: authentication/nmbrs-authentication.yml
- type: DomainSecurity
  url: security/nmbrs-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/nmbrs
- type: Website
  url: https://www.nmbrs.com
- type: Documentation
  url: https://developer.nmbrs.com/docs
- type: APIReference
  url: https://nmbrs.stoplight.io/docs/nmbrs-restapi
- type: SignUp
  url: https://developer.nmbrs.com
- type: Plans
  url: plans/nmbrs-plans-pricing.yml
- type: RateLimits
  url: rate-limits/nmbrs-rate-limits.yml
- type: FinOps
  url: finops/nmbrs-finops.yml
- url: https://www.nmbrs.com/blog
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Nmbrs API — frequently asked questions

Does Nmbrs have an API?

Yes. APIs.io lists 10 APIs from Nmbrs, including Nmbrs SOAP EmployeeService (Legacy), Nmbrs SOAP CompanyService (Legacy) and Nmbrs SOAP DebtorService (Legacy), and 7 more.

Is there an OpenAPI specification for the Nmbrs API?

Yes. APIs.io indexes 7 OpenAPI specifications for Nmbrs, each linked for download from this page.

How do I authenticate with the Nmbrs API?

Nmbrs documents its authentication (oauth2/apiKey/soap-token · 3 schemes). The details are profiled on APIs.io as Nmbrs Authentication.

How much does the Nmbrs API cost?

APIs.io lists 4 pricing plans for Nmbrs, with each plan's price, limits and inclusions under Pricing on this page.

Is the Nmbrs API ready for AI agents?

Nmbrs has a Kin Score of 30.4 out of 100 (thin) and an Agent Readiness score of 23.7 (agent-aware), scored by API Evangelist on 2026-11-06.

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