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OpenBesluitvorming / Open Raadsinformatie / Open Stateninformatie API docs

OpenBesluitvorming aims to make governmental decision making more transparent by aggregating and standardizing meeting & decision data. Currently, the API includes data from more than 140 municipalities (gemeenten) and 5 provinces.


The ORI API has several endpoints for different goals:

  • the REST API for fetching individual resources
  • an Elastic endpoint for full-text search



The ORI REST API is hofsted at the subdomain. Use this to get individual meetings / motions / agenda items / persons / etc, such as It is by far the most performant API for ORI, as it stores the various representations (TTL, RDF/XML, N3, N-Triples, JSON-LD) as static files. Since this API serves RDF, it might be a good idea to get familiar with linked data.

There is a special endpoint for getting all organizations:

Read more about the REST API in its github repo and its documentation.

If you want to see some examples of how to query this endpoint, check out example_requests.http.

A new REST API is being tested that aims to replace the current one. It is available at (check out the 'random' endpoint here).



This is an ElasticSearch endpoint, which offers powerful query and full-text search capabilities.

The repo and issue tracker for this API can be found here. Read the Elastic v7.0 docs for more information. Only specific Elastic endpoints are publicly available. This is to prevent (malicious or accidental) write / remove commands.

If you want to know the mapping for Elastic, visit*/_mapping. Replace ori_amsers with the index that you're interested in.

If you want to see some examples of how to query this endpoint, check out example_requests.http.

API Versioning & deprecation

APIs change over time, and some of these changes could break implementations. At all times, we try to minimize these breaking changes. When these are necessary, however, we will upgrade the API version. If you want to receive notifications prior to breaking API changes, subscribe by mailing to []( API versioning) with the subject: "ORI API versioning".

  • The REST API should be considered stable.
  • The Elastic API has various undocument endpoints.

Changes from V0 to V1

  • ElasticSearch was upgraded from 5 to 7 (upgrade guide)
  • Events are now split between "Meetings" and "AgendaItems"
  • The new REST API for performant Linked Data resource fetching
  • Documents are no longer nested under Events
  • PDF documents are cached, so now it's possible to query from sources that had no support for this (such as iBabs)
  • An @context json object was added in ElasticSearch for RDF / JSON-LD compliance.
  • A discussed_at field is added to AgendaItems and Documents.
  • The available keys in the resources still adhere to Popolo where possible, so they have not changed.
  • Text of extracted documents is now paginated, it's an array of pages.


How is the data standardized?

Most of the ORI data follows the international Popolo specification. We've added a couple of concepts, such as AgendaItems, which are namespaced under the Meeting ontology. This Meeting ontology is a work in progress. You can find all the defintions of the various models incudling the properties here.

In the future, we hope to use the VNG Open Raadsinformatie spec for serialization.

Who uses ORI / these APIs?

  •, the new search interface
  •, which features a notification system (contact: Lucas Benschop)
  • WaarOverheid, a location based app to navigate, search and subscribe to ORI data (contact: Alex Olieman)
  •, an e-democracy platform for civic engagement (contact: Joep Meindertsma)
  • Raadstalk, a widget that shows trending topics that municipalities discuss. (contact: Joep Meindertsma, repo)
  • Semantic Analysis of municipality data (contact: Robert Goené)
  • Oberon Open Stateninformatie - Browser plugin (contact: Hans-Peter Harmsen)
  • HierOverheid (in progress) (contact: Alex Olieman)
  • Your app here? Let us know!

I have feedback / a different question

For technical questions, please create an issue in the aforementioned Github repos. If you have general questions about Open Raadsinformatie, get in touch with project leader Sander Bakker.

How can my municipality / government join?

If you're a Dutch municipality, fill in this form. If you're another type of government, get in touch with

Who's behind this project?

Open Raadsinformatie and Open Stateninformatie were initiated by the Open State Foundation. VNG Realisatie is the main funder. Ontola / Argu is responsible for the technology. For more details, check out poweredBy.tsx

Which projects does the API use?