Opendata.cat MCP Server

Servidor MCP (Model Context Protocol) que connecta els models de llenguatge (Claude, ChatGPT, Gemini...) amb les dades obertes publiques de Catalunya.

CommunityOnlineNo sign-inGlobalFreeRead-only

What it can do

  • Search Datasets: Cerca datasets de dades obertes catalanes per text lliure.
  • Get Dataset Info: Retorna metadades completes d'un dataset.
  • List Dataset Fields: Llista els camps d'un dataset amb nom, tipus i descripcio.

What data it sees

Do you need an account

No: the server works without sign-in

Servidor MCP (Model Context Protocol) que connecta els models de llenguatge (Claude, ChatGPT, Gemini...) amb les dades obertes publiques de Catalunya. Cerca datasets, explora metadades i consulta dades reals de la Generalitat, l'Ajuntament de Barcelona i la Diputacio de Barcelona directament des del teu assistent d'IA.

Un projecte de xaviviro i d'opendata.cat — associacio sense anim de lucre fundada el 2012 que promou la transparencia, la difusio i l'estandarditzacio de les dades obertes a Catalunya. Inspirat en el projecte datagouv-mcp del govern frances.

How to connect

How to connect Opendata.cat MCP Server to Claude

The server address to paste into Claude settings:

https://mcp-server--opendata-cat.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Opendata.cat MCP Server to ChatGPT

The server address to paste into ChatGPT settings:

https://mcp-server--opendata-cat.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Opendata.cat MCP Server to Cursor

The server address to paste into Cursor settings:

https://mcp-server--opendata-cat.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (6)

Raw names from tools/list. Only developers need these.

search_datasetsCerca datasets de dades obertes catalanes per text lliure.
get_dataset_infoRetorna metadades completes d'un dataset.
list_dataset_fieldsLlista els camps d'un dataset amb nom, tipus i descripcio.
query_datasetConsulta dades reals directament als portals origen.
list_portalsLlista els portals de dades obertes catalans amb estadistiques.
list_categoriesLlista categories i temes amb comptadors per portal.