Connects Claude to CDS VizieR, the astronomical catalogue server hosting tens of thousands of datasets. You get four main operations: search catalogue metadata, query specific catalogues by ID, run cone searches around celestial coordinates, and look up objects by name with SIMBAD/NED resolution. Reach for this when you need programmatic access to astronomical survey data, whether you're cross-referencing Gaia positions, pulling photometry from 2MASS, or querying any of the other major catalogues astronomers use daily. Hosted via Pipeworx gateway with streamable HTTP transport, so no local setup required.
VizieR MCP — CDS astronomical catalogue access.
Part of Pipeworx — an MCP gateway connecting AI agents to 673+ live data sources.
| 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). |
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 673+ data sources:
{
"mcpServers": {
"pipeworx": {
"url": "https://gateway.pipeworx.io/mcp"
}
}
}
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.
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