list_categories

List the Catalog’s categories and sub-categories, each with a count. Discovery only — free, no credential, nothing charged. See the overview for transport and conventions. Auth: free · Charges: nothing

Arguments

None.

Returns

An array of categories, each with its sub-categories:

[
  {
    "category": "AI & Media",
    "count": 18,
    "subCategories": [
      { "subCategory": "Media generation", "count": 5 },
      { "subCategory": "LLM inference", "count": 1 }
    ]
  },
  {
    "category": "Crypto & Blockchain",
    "count": 29,
    "subCategories": [
      { "subCategory": "Crypto market data", "count": 8 },
      { "subCategory": "Blockchain data", "count": 5 }
    ]
  }
]

The category names returned here are not stored as tags. Passing one as the category filter of search_services or route_by_intent matches nothing — put a category name in query / intent instead. The category filter matches a listing’s tags.

Try it

Ask your assistant:

Using the Nevermined connector, list the catalog categories.

Call it directly (discovery is free — no credential needed):

curl -X POST https://mcp.live.nevermined.app/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"list_categories","arguments":{}}}'

Catalog MCP

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Arguments

Returns

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​Arguments

​Returns

​Try it

Arguments

Returns

Try it