mcp-vizier

CDS VizieR — astronomical catalogue server (tens of thousands of catalogues)

Part of Pipeworx — an MCP gateway connecting AI agents to 250+ live data sources.

Tools

| Tool | Description | |------|-------------| | catalogs | Search VizieR catalogue metadata. | | query_catalog | Query rows of a single catalogue (e.g. "I/345/gaia2"). | | cone_search | Cone search around (RA, Dec). | | object | Query by object name (resolved via SIMBAD/NED). |

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 250+ 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

• All tools and guides
• pipeworx.io

License

MIT