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opendata-cat

https://opendata.cat/api/mcp

answers a handshake

Registry name: io.github.xaviviro/opendata-cat
Reports itself as: opendata-cat 0.4.0
Protocol version: 2024-11-05
Transport: streamable-http
HTTP status: 200
Latency: 1037 ms
Tools: 8
Checked: 2026-09-06T08:27:08Z

Tools it reports

search_datasets
get_dataset_info
list_dataset_fields
query_dataset
list_portals
list_categories
related_datasets
search_radioteca

Check it yourself

curl -s -X POST https://opendata.cat/api/mcp \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json, text/event-stream' \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"you","version":"0"}}}'