KNMI Royal Netherlands Meteorological Institute

The Royal Netherlands Meteorological Institute (KNMI) is the Dutch national weather service, providing weather forecasts, climate data, and seismology information. It operates as a public research institute, delivering data and expertise to government, businesses, and the public. The KNMI offers APIs for weather observations, forecasts, climate statistics, and earthquake data, supporting applications in agriculture, aviation, emergency management, and scientific research.

KNMI Royal Netherlands Meteorological Institute is listed with 1 API on the APIs.io network: KNMI Data Catalogue API. Tagged areas include Company, Weather, Climate, Seismology, and Data.

🌐 Visit website 📡 Profile data on GitHub

14.8/100 emerging Agent 19/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

Company Weather ClimateSeismologyData

Kin Score

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

Composite quality — 14.8/100 · emerging

Contract Quality 5.2 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 1.8 / 17

Operational Transparency 0.6 / 11

Contract Governance 0.0 / 10

Discoverability 4.6 / 9

Regulatory Posture 1.5 / 15

Agent readiness — 19/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 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 4 / 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 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):

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
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)

10 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 24.3 — up to +18.9 composite points
Developer Ergonomics scores 7.1 — up to +18.6 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/knmi-royal-netherlands-meteorological-institute/apis.yml: open an issue on github.com/api-evangelist/knmi-royal-netherlands-meteorological-institute 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 →

APIs 1

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

KNMI Data Catalogue API

Security Posture 1

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

Knmi Royal Netherlands Meteorological Institute Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Resources

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: knmi-royal-netherlands-meteorological-institute
name: KNMI Royal Netherlands Meteorological Institute
description: The Royal Netherlands Meteorological Institute (KNMI) is the Dutch national weather service, providing weather
  forecasts, climate data, and seismology information. It operates as a public research institute, delivering data and expertise
  to government, businesses, and the public. The KNMI offers APIs for weather observations, forecasts, climate statistics,
  and earthquake data, supporting applications in agriculture, aviation, emergency management, and scientific research.
url: https://raw.githubusercontent.com/api-evangelist/knmi-royal-netherlands-meteorological-institute/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-26 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-26'
modified: '2026-10-26'
tags:
- Company
- Weather
- Climate
- Seismology
- Data
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Hosts
  url: hosts/knmi-royal-netherlands-meteorological-institute-hosts.yml
- type: Vendors
  url: vendors/knmi-royal-netherlands-meteorological-institute-vendors.yml
- type: SDKs
  url: packages/knmi-royal-netherlands-meteorological-institute-packages.yml
- type: Packages
  url: packages/knmi-royal-netherlands-meteorological-institute-packages.yml
- type: PrivacyPolicy
  url: https://www.knmi.nl/privacy
- type: GitHubOrganization
  url: https://github.com/KNMI
- type: DomainSecurity
  url: security/knmi-royal-netherlands-meteorological-institute-domain-security.yml
- type: Website
  url: http://www.knmi.nl/
apis:
- name: KNMI Data Catalogue API
  description: KNMI Data Catalogue API
  humanURL: https://raw.githubusercontent.com/KNMI/API-specifications/master/Data-and-Services-Provider-API/api.yaml
  baseURL: null
  properties:
  - type: OpenAPI
    url: openapi/knmi-openapi.yaml
  aid: knmi-royal-netherlands-meteorological-institute:knmi-data-catalogue-api
x-enrichment:
  date: '2026-10-26'
  status: enriched
  artifacts_added: 9
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

KNMI Royal Netherlands Meteorological Institute API — frequently asked questions

Does KNMI Royal Netherlands Meteorological Institute have an API?

Yes. APIs.io lists 1 API from KNMI Royal Netherlands Meteorological Institute, including KNMI Data Catalogue API.

Is there an OpenAPI specification for the KNMI Royal Netherlands Meteorological Institute API?

Yes. APIs.io indexes 1 OpenAPI specification for KNMI Royal Netherlands Meteorological Institute, each linked for download from this page.

Is the KNMI Royal Netherlands Meteorological Institute API ready for AI agents?

KNMI Royal Netherlands Meteorological Institute has a Kin Score of 14.8 out of 100 (emerging) and an Agent Readiness score of 18.9 (agent-aware), scored by API Evangelist on 2026-10-31.

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