Connect every source at once

One address for everything this installation can read. Every tool carries the source it addresses as a prefix, so you choose the source by choosing the tool. This endpoint stores nothing and decides nothing for you.

What is on this endpoint

ori_…, Open Raadsinformatie
openbesluitvorming_…, OpenBesluitvorming
tweedekamer_…, Tweede Kamer
opentk_…, OpenTK
officielebekendmakingen_…, Officiële Bekendmakingen
rechtspraak_…, Rechtspraak
openarchivaris_…, Open Archivaris

A tool is called tweedekamer_get_vote or openbesluitvorming_find_motions, for instance. Seven tool names exist on more than one source and three of those mean different things per source; the prefix makes that unambiguous.

What this connector can and cannot do

Everything the separate connectors can do, with the same tools and the same answers. Nothing is lost and nothing is added, except list_capabilities: it says per source what it is authoritative for and which trap makes an answer wrong rather than incomplete.
There are many of them: over forty tools. That is deliberate, because the alternative was choosing on your behalf which source answers your question. Start at list_capabilities when in doubt.
This endpoint has no data and no source of its own. It shows the tools of the connectors that are switched on; switch one off and its tools are absent here too.
Two pairs look interchangeable and are not: ori is the retired predecessor of openbesluitvorming, and tweedekamer is the register whose text opentk indexes. Always say in an answer which source a finding came from.

Claude Connecting with Claude

Connect with Claude Desktop recommended

Recommended for most users. Open Settings → Connectors and add a custom connector.

Add a custom connector in Claude Desktop

1 Open Settings and go to Connectors, then choose Add custom connector.

2 Enter a name and the MCP server URL, then choose Add.

3 The connector appears as connected and its tools are ready to use.

Schematic illustration of the Claude Desktop flow; the exact screens may vary per version. Click an illustration to enlarge it.

Add a custom connector with this URL:

https://besluitbron.nl/mcp/unified/v1

No authentication is required.

This address is the one of this installation. An organisation running the service itself uses its own address. Run it yourself.

Connect with Claude Code

Run a single command in the terminal:

claude mcp add --transport http unified https://besluitbron.nl/mcp/unified/v1

Connect with claude.ai

Add a custom connector under Settings → Connectors with the same URL.

https://besluitbron.nl/mcp/unified/v1

ChatGPT Connecting with ChatGPT

ChatGPT can use BesluitBron too. The route differs from Claude's: with Claude you add an ordinary custom connector, with ChatGPT it sits behind a developer setting.

Needed: ChatGPT in a web browser and a paid plan on which developer mode is available. In a Business or Enterprise workspace an administrator has to allow it first, under Workspace Settings → Permissions & Roles → Connected Data. OpenAI states this mode is meant for developers.

In ChatGPT, open your profile picture at the top right and go to Settings.
Go to Connectors (called Apps in some versions) and open Advanced settings at the bottom.
Switch on Developer mode.
Under Connectors, add a remote MCP server and paste the URL below. For authentication, choose none.

Add a custom connector with this URL:

https://besluitbron.nl/mcp/unified/v1

No authentication is required.

OpenAI changes these screens regularly and the names differ per version and plan; if your screen looks different, see the OpenAI Help Center.