MCP server

Vizier

io.github.pipeworx-io/vizier

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

VizieR MCP — CDS astronomical catalogue access.

Website Source

At a glance

Type

MCP server

Publisher

pipeworx.io (verified by the MCP Registry)

Status

Working at last check

Tools

46

Token cost

About 26,898 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http vizier https://gateway.pipeworx.io/vizier/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.vizier]
url = "https://gateway.pipeworx.io/vizier/mcp"

Gemini CLI

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

Cursor

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

VS Code

{"servers":{"vizier":{"type":"http","url":"https://gateway.pipeworx.io/vizier/mcp"}}}

Antigravity

agy mcp add vizier https://gateway.pipeworx.io/vizier/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"vizier","server_url":"https://gateway.pipeworx.io/vizier/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"vizier","server_url":"https://gateway.pipeworx.io/vizier/mcp"}

Tools

• catalogs ~100 tokens
  Search VizieR catalogue metadata.
• cone_search ~154 tokens
  Cone search around (RA, Dec).
• object ~95 tokens
  Query by object name (resolved via SIMBAD/NED).
• query_catalog ~246 tokens
  VizieR astronomical catalogue service at CDS Strasbourg — return data rows from one published catalogue, identified by its VizieR id such as "I/345/gaia2" (Gaia DR2). Takes optional column selection and a numeric constraint expression, up to 50000 rows. Answers what a published astronomy catalogue r

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