Krajowy Rejestr Sądowy (National Court Register), Poland

The Krajowy Rejestr Sądowy (KRS, National Court Register) is Poland's court-kept register of businesses, associations and other legal entities, operated by the Ministry of Justice (Ministerstwo Sprawiedliwości). Through the Portal Rejestrów Sądowych it publishes the Open KRS API (Otwarte API KRS), a keyless RESTful JSON API that returns current and full register extracts for an entity by its KRS number and daily and hourly bulletins of changes entered into the register.

Krajowy Rejestr Sądowy (National Court Register), Poland is listed with 1 API on the APIs.io network. Tagged areas include Company, Government, Business Registry, Open Data, and Poland.

Krajowy Rejestr Sądowy (National Court Register), Poland’s developer surface includes authentication, documentation, developer portal, and 5 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

11.3/100 emerging Agent 8/100 agent aware Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

1 API

Company Government Business Registry Open Data Poland Legal Entities Europe

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 11.3/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 5.3 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 5.3 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 8/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 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 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

MCP Tool Quality 6 / 6

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/api-krs-ms-gov-pl/"><img src="https://apis.io/badge/api-krs-ms-gov-pl/card.svg" alt="Krajowy Rejestr Sądowy (National Court Register), Poland on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

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

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link Ask about this →

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 0.0 — up to +25.0 composite points Ask about this →
Access Clarity scores 0.0 — up to +20.0 composite points Ask about this →
Developer Ergonomics scores 31.0 — up to +13.8 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/api-krs-ms-gov-pl/apis.yml: open an issue on github.com/api-evangelist/api-krs-ms-gov-pl 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.

Open KRS API (Otwarte API KRS)

Keyless RESTful JSON API from the Polish Ministry of Justice returning current (OdpisAktualny) and full (OdpisPelny) National Court Register extracts by KRS number, plus daily a...

Krajowy Rejestr Sądowy (National Court Register), Poland API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

Krajowy Rejestr Sądowy (National Court Register), Poland Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Krajowy Rejestr Sądowy (National Court Register), Poland Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Krajowy Rejestr Sądowy (National Court Register), Poland Authentication

1 scheme

SECURITY

Krajowy Rejestr Sądowy (National Court Register), Poland Domain Security

TLSv1.2 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conventions

Conventions

ErrorCatalog

ErrorCatalog

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

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: api-krs-ms-gov-pl
name: Krajowy Rejestr Sądowy (National Court Register), Poland
description: The Krajowy Rejestr Sądowy (KRS, National Court Register) is Poland's court-kept register of businesses, associations
  and other legal entities, operated by the Ministry of Justice (Ministerstwo Sprawiedliwości). Through the Portal Rejestrów
  Sądowych it publishes the Open KRS API (Otwarte API KRS), a keyless RESTful JSON API that returns current and full register
  extracts for an entity by its KRS number and daily and hourly bulletins of changes entered into the register.
url: https://artifacts.apis.io/api-krs-ms-gov-pl/apis.yml
x-type: company
x-source: harvest:eu-gov-keynote-2026-11-10
x-tier: profiled
x-tier-reason: enrichment pass 2026-11-11 (local-v6; was harvest)
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  probe_state: unreadable
  source:
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
specificationVersion: '0.20'
created: '2026-11-11'
modified: '2026-11-11'
tags:
- Company
- Government
- Business Registry
- Open Data
- Poland
- Legal Entities
- Europe
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Authentication
  url: authentication/api-krs-ms-gov-pl-authentication.yml
- type: Conventions
  url: conventions/api-krs-ms-gov-pl-conventions.yml
- type: ErrorCatalog
  url: errors/api-krs-ms-gov-pl-error-codes.yml
- type: Hosts
  url: hosts/api-krs-ms-gov-pl-hosts.yml
- type: DomainSecurity
  url: security/api-krs-ms-gov-pl-domain-security.yml
- type: Website
  url: https://prs.ms.gov.pl/
- type: Documentation
  url: https://prs.ms.gov.pl/krs/openApi
- type: Portal
  url: https://www.gov.pl/web/sprawiedliwosc/krajowy-rejestr-sadowy
apis:
- aid: api-krs-ms-gov-pl:open-krs-api
  name: Open KRS API (Otwarte API KRS)
  description: Keyless RESTful JSON API from the Polish Ministry of Justice returning current (OdpisAktualny) and full (OdpisPelny)
    National Court Register extracts by KRS number, plus daily and hourly change bulletins.
  humanURL: https://prs.ms.gov.pl/krs/openApi
  baseURL: https://api-krs.ms.gov.pl/api
  tags:
  - Business Registry
  - Open Data
  - Government
  properties:
  - type: Documentation
    url: https://prs.ms.gov.pl/krs/openApi
x-enrichment:
  date: '2026-11-11'
  status: minimal
  artifacts_added: 5
  pass: local-v6
x-coverage:
  state: unreadable
  reason: no-machine-readable-spec
  detail: The Ministry of Justice documents four keyless GET services (OdpisAktualny, OdpisPelny, Biuletyn, BiuletynGodzinowy)
    only as prose on the Portal Rejestrów Sądowych page; api-krs.ms.gov.pl serves no OpenAPI/Swagger and the docs-to-contract
    generator could not parse the prose layout.
  evidence:
  - url: https://prs.ms.gov.pl/krs/openApi
    status: 200
  - url: https://api-krs.ms.gov.pl/swagger/v1/swagger.json
    status: 404
  - url: https://api-krs.ms.gov.pl/openapi.json
    status: 404
  - url: https://api-krs.ms.gov.pl/api/krs/OdpisAktualny/0000019193?rodzaj=aktualny&format=json
    status: 200
  checked: '2026-11-11'

Krajowy Rejestr Sądowy (National Court Register), Poland API — frequently asked questions

Does Krajowy Rejestr Sądowy (National Court Register), Poland have an API?

Yes. APIs.io lists 1 API from Krajowy Rejestr Sądowy (National Court Register), Poland, including Open KRS API (Otwarte API KRS).

How do I authenticate with the Krajowy Rejestr Sądowy (National Court Register), Poland API?

Krajowy Rejestr Sądowy (National Court Register), Poland uses bearer-token authentication (1 scheme). The details are profiled on APIs.io as Krajowy Rejestr Sądowy (National Court Register), Poland Authentication.

Is the Krajowy Rejestr Sądowy (National Court Register), Poland API ready for AI agents?

Krajowy Rejestr Sądowy (National Court Register), Poland has a Kin Score of 11.3 out of 100 (emerging) and an Agent Readiness score of 7.9 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
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.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/api-krs-ms-gov-pl"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/api-krs-ms-gov-pl/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/api-krs-ms-gov-pl/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.