@pipeworx/vizier

VizieR MCP — CDS Strasbourg astronomical catalogue server. Tens of thousands of catalogues covering stars, galaxies, exoplanets, surveys. Keyless.

Part of Pipeworx — an MCP gateway connecting AI agents to 1394+ live data sources.

Tools

• catalogs(query, max?) — search VizieR catalogue metadata
• query_catalog(catalog, constraint?, columns?, max?) — query rows of one catalogue
• cone_search(catalog, ra, dec, radius_deg, max?) — cone search around (RA, Dec)
• object(name, catalog?) — query by object name

Data source

https://vizier.cds.unistra.fr/viz-bin/ and https://vizier.cds.unistra.fr/vizier/

Quick Start

Add to your MCP client (Claude Desktop, Cursor, Windsurf, etc.):

{
  "mcpServers": {
    "vizier": {
      "url": "https://gateway.pipeworx.io/vizier/mcp"
    }
  }
}

Or connect to the full Pipeworx gateway for access to all 1394+ data sources:

{
  "mcpServers": {
    "pipeworx": {
      "url": "https://gateway.pipeworx.io/mcp"
    }
  }
}

Using with ask_pipeworx

Instead of calling tools directly, you can ask questions in plain English:

ask_pipeworx({ question: "your question about Vizier data" })

The gateway picks the right tool and fills the arguments automatically.

More

• Docs and guides
• pipeworx.io

License

MIT