woz-api-nl

WOZ API provides developers access to official WOZ property valuation data for Dutch addresses. It offers endpoints for WOZ values, BAG building information, cadastral parcels, energy labels, and subsidy eligibility. Users can obtain up to 10 free credits and pay per address thereafter. The service supports multiple programming languages with client libraries and detailed documentation.

woz-api-nl publishes 4 API contracts indexed on the APIs.io network, including Account API, Adressen API, Lijst API, and 1 more. Tagged areas include Real Estate, Netherlands, Property Valuation, and WOZ.

The woz-api-nl catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

woz-api-nl’s developer surface includes authentication, documentation, API reference, pricing, and 21 more developer resources.

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39.2/100 thin ▼ -7.6 Agent 46/100 agent ready Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 1 MCP Servers

Real Estate Netherlands Property ValuationWOZ

Kin Score

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

Composite quality — 39.2/100 · thin

Contract Quality 13.9 / 21

Developer Ergonomics 5.7 / 17

Access Clarity 3.8 / 17

Operational Transparency 1.2 / 11

Contract Governance 2.0 / 10

Discoverability 4.8 / 9

Regulatory Posture 4.6 / 15

Agent readiness — 46/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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 5 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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):

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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
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
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks

4 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 22.4 — up to +15.5 composite points
Developer Ergonomics scores 33.8 — up to +13.2 composite points
Operational Transparency scores 10.5 — up to +11.6 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/woz-api-nl/apis.yml: open an issue on github.com/api-evangelist/woz-api-nl 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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

OAuth 2.0 Protected Resource Metadata

measured — observed by APIs.io (verified)

OpenAPI

measured — observed by APIs.io (published)

OAuth 2.0

measured — observed by APIs.io (declared)

APIs 4

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

woz-api-nl Account API

Je creditsaldo uitlezen zonder een credit te verbruiken.

woz-api-nl Adressen API

Zelfde antwoord, drie manieren om het op te vragen: op adrestekst, of op een van de twee vaste BAG-sleutels.

woz-api-nl Lijst API

Een hele lijst adressen of een Excel in een keer: een gratis proef van 5 adressen, de prijs en een betaallink, en na betaling de rijen en het bestand.

woz-api-nl Proef API

Starten zonder account: een gratis proefsleutel, het e-mailadres van de gebruiker, en een betaallink voor credits. Voor AI-assistenten en scripts.

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

woz-api-nl MCP Server

Remote MCP server at woz-api.nl.

MCP SERVER

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Woz Api Nl Context

43 classes · 156 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

woz-api-nl API Rules

14 rules · 13 errors 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

BetaalLinkAntwoord

6 properties

JSON SCHEMA

LijstAanvraag

5 properties

JSON SCHEMA

LijstAntwoord

15 properties

JSON SCHEMA

LijstKolomKeuze

9 properties

JSON SCHEMA

ProefSleutelAntwoord

5 properties

JSON SCHEMA

WozApiResponse

11 properties

JSON SCHEMA

Security Posture 2

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

Woz Api Nl Authentication

apiKey/oauth2 · 2 schemes

SECURITY

Woz Api Nl Domain Security

TLSv1.2 · HSTS · DNSSEC · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Woz Api Nl Scopes

2 scopes · authorizationCode

2 scopes

SCOPES

Agentic Access 1

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

Woz Api Nl Agentic Access

14 operations · 7 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgentSkill

LLMsTxt

MCPServer

WellKnown

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Build 2

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

Access & Security 4

Authentication, authorization, and security posture

SecurityTxt

OAuthScopes

Authentication

DomainSecurity

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: woz-api-nl
name: woz-api-nl
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://woz-api.nl/img/og-wozapi.png
description: WOZ API provides developers access to official WOZ property valuation data for Dutch addresses. It offers endpoints
  for WOZ values, BAG building information, cadastral parcels, energy labels, and subsidy eligibility. Users can obtain up
  to 10 free credits and pay per address thereafter. The service supports multiple programming languages with client libraries
  and detailed documentation.
url: https://artifacts.apis.io/woz-api-nl/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-31 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-31'
modified: '2026-10-31'
tags:
- Real Estate
- Netherlands
- Property Valuation
- WOZ
tags_raw:
- RealEstate
- API
- Netherlands
- PropertyValuation
- WOZ
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: AgenticAccess
  url: agentic-access/woz-api-nl-agentic-access.yml
- type: Spectral
  url: rules/woz-api-nl-rules.yml
- type: JSONLD
  url: json-ld/woz-api-nl-context.jsonld
- type: Vocabulary
  url: vocabulary/woz-api-nl-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/woz-api-nl-data-model.yml
- type: ErrorCatalog
  url: errors/woz-api-nl-problem-types.yml
- type: Conformance
  url: conformance/woz-api-nl-conformance.yml
- type: LLMsTxt
  url: llms/woz-api-nl-llms.txt
- type: MCPServer
  url: mcp/woz-api-nl-mcp.yml
- type: SecurityTxt
  url: well-known/woz-api-nl-opendata-security.txt
- type: WellKnown
  url: well-known/woz-api-nl-well-known.yml
- type: Hosts
  url: hosts/woz-api-nl-hosts.yml
- type: SDKs
  url: packages/woz-api-nl-packages.yml
- type: Packages
  url: packages/woz-api-nl-packages.yml
- type: Login
  url: https://woz-api.nl/Identity/Account/Login
- type: OAuthScopes
  url: scopes/woz-api-nl-scopes.yml
- type: Authentication
  url: authentication/woz-api-nl-authentication.yml
- type: DomainSecurity
  url: security/woz-api-nl-domain-security.yml
- type: Website
  url: https://woz-api.nl/
- type: Documentation
  url: https://woz-api.nl/docs
- type: APIReference
  url: https://woz-api.nl/swagger/v1/swagger.json
- type: Pricing
  url: https://woz-api.nl/woz-api-prijs
- type: TermsOfService
  url: https://woz-api.nl/terms
- type: PrivacyPolicy
  url: https://woz-api.nl/privacy
apis:
- aid: woz-api-nl:woz-api-nl-account-api
  name: woz-api-nl Account API
  description: Je creditsaldo uitlezen zonder een credit te verbruiken.
  humanURL: https://woz-api.nl/docs
  baseURL: https://woz-api.nl
  tags:
  - Account
  properties:
  - type: OpenAPI
    url: openapi/woz-api-nl-account-api-openapi.yml
  - type: JSONSchema
    url: json-schema/woz-api-nl-woz-api-response-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-kolom-keuze-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-aanvraag-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-betaal-link-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-proef-sleutel-antwoord-schema.json
- aid: woz-api-nl:woz-api-nl-adressen-api
  name: woz-api-nl Adressen API
  description: 'Zelfde antwoord, drie manieren om het op te vragen: op adrestekst, of op een van de twee vaste BAG-sleutels.'
  humanURL: https://woz-api.nl/docs
  baseURL: https://woz-api.nl
  tags:
  - Adressen
  properties:
  - type: OpenAPI
    url: openapi/woz-api-nl-adressen-api-openapi.yml
  - type: JSONSchema
    url: json-schema/woz-api-nl-woz-api-response-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-kolom-keuze-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-aanvraag-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-betaal-link-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-proef-sleutel-antwoord-schema.json
- aid: woz-api-nl:woz-api-nl-lijst-api
  name: woz-api-nl Lijst API
  description: 'Een hele lijst adressen of een Excel in een keer: een gratis proef van 5 adressen, de prijs en een betaallink,
    en na betaling de rijen en het bestand.'
  humanURL: https://woz-api.nl/docs
  baseURL: https://woz-api.nl
  tags:
  - Lijst
  properties:
  - type: OpenAPI
    url: openapi/woz-api-nl-lijst-api-openapi.yml
  - type: JSONSchema
    url: json-schema/woz-api-nl-woz-api-response-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-kolom-keuze-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-aanvraag-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-betaal-link-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-proef-sleutel-antwoord-schema.json
- aid: woz-api-nl:woz-api-nl-proef-api
  name: woz-api-nl Proef API
  description: 'Starten zonder account: een gratis proefsleutel, het e-mailadres van de gebruiker, en een betaallink voor
    credits. Voor AI-assistenten en scripts.'
  humanURL: https://woz-api.nl/docs
  baseURL: https://woz-api.nl
  tags:
  - Proef
  properties:
  - type: OpenAPI
    url: openapi/woz-api-nl-proef-api-openapi.yml
  - type: JSONSchema
    url: json-schema/woz-api-nl-woz-api-response-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-kolom-keuze-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-lijst-aanvraag-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-betaal-link-antwoord-schema.json
  - type: JSONSchema
    url: json-schema/woz-api-nl-proef-sleutel-antwoord-schema.json
x-enrichment:
  date: '2026-10-31'
  status: enriched
  artifacts_added: 26
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

woz-api-nl — frequently asked questions

Does woz-api-nl have an API?

Yes. APIs.io lists 4 APIs from woz-api-nl, including woz-api-nl Account API, woz-api-nl Adressen API and woz-api-nl Lijst API, and 1 more.

Is there an OpenAPI specification for the woz-api-nl?

Yes. APIs.io indexes 4 OpenAPI specifications for woz-api-nl, each linked for download from this page.

How do I authenticate with the woz-api-nl?

woz-api-nl documents its authentication (apiKey/oauth2 · 2 schemes). The details are profiled on APIs.io as Woz Api Nl Authentication.

Does woz-api-nl have an MCP server?

Yes. APIs.io lists 1 MCP server for woz-api-nl: Remote MCP server at woz-api.nl.

Is the woz-api-nl ready for AI agents?

woz-api-nl has a Kin Score of 39.2 out of 100 (thin) and an Agent Readiness score of 45.6 (agent-ready), scored by API Evangelist on 2026-11-06.

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