GraceDB MCP Server
LIGO/Virgo/KAGRA gravitational-wave alerts (GraceDB), open data (GWOSC) and GCN follow-up.
GraceDB scores 55 (Fair), with no SPDX license recorded. It installs as a local process. It does not declare tools yet. Filed under Data and analytics. Install configs are generated for 10 clients. Being listed in the registry is not the same as being vendor-official.
Fair trust
55 of 100 from six public signals. Nobody can buy a point.
- Listed in the official MCP registry.
- No license recorded.
License, quality and maintenance
Where the 55 comes from
22 + 20 + 0 + 0 + 10 + 3 = 55. Each factor is capped, so no single signal can carry a listing.
Active in the official MCP registry, plus a known vendor namespace.
Registry: 22 of 30 points.How recently the repository saw a commit or release.
Maintenance: 20 of 20 points.GitHub stars and weekly downloads, on a log scale.
Popularity: 0 of 20 points.A clear, OSI-style open-source license.
License: 0 of 10 points.Not archived, a secure install path, a pinned version.
Security: 10 of 10 points.A real summary, a README with depth, listed tools.
Docs: 3 of 10 points.Install
Pick your client, copy the config, paste it in.
Needs Cursor or VS Code installed on this device. The button opens the app and asks you to confirm before it adds the server.
{ "mcpServers": { "izabelamaria24-gracedb-mcp": { "command": "uvx", "args": [ "gracedb-mcp" ], "env": { "GRACEDB_FORCE_NOAUTH": "true", "GRACEDB_SERVICE_URL": "https://gracedb.ligo.org/api/", "GRACEDB_MCP_DATA_DIR": "~/.cache/gracedb-mcp" } } }}
Environment variables
| Name | Required | Notes |
|---|---|---|
GRACEDB_FORCE_NOAUTH | Optional | Set to true for anonymous access to public superevents. |
GRACEDB_SERVICE_URL | Optional | GraceDB API base URL (production or playground). |
GRACEDB_MCP_DATA_DIR | Optional | Directory for downloaded files. |
GRACEDB_FORCE_NOAUTH | Optional | Set to true for anonymous access to public superevents. |
GRACEDB_SERVICE_URL | Optional | GraceDB API base URL (production or playground). |
Tools
All capabilitiesTools show up when the registry metadata or the repository README lists them. Public READMEs are read directly. A GitHub token is used only when one is already configured.
About
LIGO/Virgo/KAGRA gravitational-wave alerts (GraceDB), open data (GWOSC) and GCN follow-up.
Frequently asked questions
What is GraceDB MCP Server?
LIGO/Virgo/KAGRA gravitational-wave alerts (GraceDB), open data (GWOSC) and GCN follow-up.
How do I install GraceDB MCP Server in Claude Desktop, Cursor, or VS Code?
Pick your client in the Install section on this page and copy the generated config into the client's config file. Step-by-step guides: Claude Desktop, Cursor, and VS Code. GraceDB MCP Server runs locally from the PyPI package gracedb-mcp with the command uvx gracedb-mcp.
Does GraceDB MCP Server support remote (HTTP) connections?
No remote endpoint is listed for GraceDB MCP Server. It runs locally on your machine over stdio, started by your MCP client.
How is GraceDB MCP Server's trust score calculated?
GraceDB MCP Server scores 55 out of 100 (Fair). The score adds six capped public signals: registry status, maintenance, popularity, license, documentation, and security. Nobody can pay for points. Read the methodology for the full formula.
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