Kadaster International

Kadaster International (Kadaster) is the Dutch national land registry and mapping agency. It provides authoritative information on property ownership, land use, cadastral data, and geographic information for the Netherlands. The organization offers public datasets, APIs, and services for developers, businesses, and citizens to access real‑estate, geospatial, and statistical data for planning, analysis, and compliance purposes.

Kadaster International is profiled on the APIs.io network. Tagged areas include Land Registry, Geospatial, Real Estate, Government, and Netherlands.

Kadaster International’s developer surface includes documentation and 11 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

13.8/100 emerging Agent 0/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

Land Registry Geospatial Real Estate Government Netherlands

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 13.8/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 1.6 / 17

Access Clarity 1.8 / 17

Operational Transparency 1.7 / 11

Contract Governance 1.9 / 10

Discoverability 3.8 / 9

Regulatory Posture 3.1 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 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 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Government & Public Sector 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):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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

13 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 9.5 — up to +18.1 composite points
Access Clarity scores 10.5 — up to +17.9 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/kadaster-international/apis.yml: open an issue on github.com/api-evangelist/kadaster-international 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 →

Security Posture 2

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

Kadaster International Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Kadaster International Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

Security

Security

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

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: kadaster-international
name: Kadaster International
description: Kadaster International (Kadaster) is the Dutch national land registry and mapping agency. It provides authoritative
  information on property ownership, land use, cadastral data, and geographic information for the Netherlands. The organization
  offers public datasets, APIs, and services for developers, businesses, and citizens to access real‑estate, geospatial, and
  statistical data for planning, analysis, and compliance purposes.
url: https://raw.githubusercontent.com/api-evangelist/kadaster-international/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-23 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-23'
modified: '2026-10-23'
tags:
- Land Registry
- Geospatial
- Real Estate
- Government
- Netherlands
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: SecurityTxt
  url: well-known/kadaster-international-www-security.txt
- type: Security
  url: https://www.ncsc.nl/dienstverlening/kwetsbaarheid-melden-cvd
- type: Conformance
  url: conformance/kadaster-international-conformance.yml
- type: SecurityTxt
  url: well-known/kadaster-international-formulieren-security.txt
- type: WellKnown
  url: well-known/kadaster-international-well-known.yml
- type: Hosts
  url: hosts/kadaster-international-hosts.yml
- type: PrivacyPolicy
  url: https://www.kadaster.nl/privacy
- type: Documentation
  url: https://developer.kadaster.nl/
- type: GitHubOrganization
  url: https://github.com/kadaster
- type: VulnerabilityDisclosure
  url: security/kadaster-international-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/kadaster-international-domain-security.yml
- type: Website
  url: https://www.kadaster.nl
apis: []
x-enrichment:
  date: '2026-10-23'
  status: enriched
  artifacts_added: 15
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

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