An MCP (Model Context Protocol) server providing tools to query Gravitational Wave (GW) data from GraceDB and GWOSC.
Connect GW MCP to Claude, Cursor or any other MCP client and it stops being a tab you switch to. An MCP (Model Context Protocol) server providing tools to query Gravitational Wave (GW) data from GraceDB and GWOSC. The gw mcp mcp server is what makes that connection.
MCP (Model Context Protocol) allows AI assistants like Claude to use external tools. This server gives Claude the ability to query gravitational wave databases in real-time, so you can ask questions about GW events in natural language.
The toolset is worth reading before you wire it up, because it tells you what the integration is really for:
search_gw_events — GraceDBget_event_details — GraceDBget_superevent — GraceDBget_event_files — GraceDBget_event_labels — GraceDBget_event_gps — GWOSCget_catalog_events — GWOSCfetch_strain_data — GWOSCfetch_event_strain — GWOSCExample — The Example tool exposed by this serverConfiguration is passed through the environment: SCITOKEN_FILE, X509_USER_CERT, X509_USER_KEY, X509_USER_PROXY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.
The server ships on PyPI as langchain-mcp-adapters, so your MCP client can launch it on demand — there is no separate build step. Add the server block to your client's configuration, restart it, and the tools register themselves.
Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. GW MCP's toolset — search_gw_events, get_event_details, get_superevent and 7 more — is a fair guide to whether it matches your workflow.
We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.
| Tool | What it does |
|---|---|
| search_gw_events | GraceDB |
| get_event_details | GraceDB |
| get_superevent | GraceDB |
| get_event_files | GraceDB |
| get_event_labels | GraceDB |
| get_event_gps | GWOSC |
| get_catalog_events | GWOSC |
| fetch_strain_data | GWOSC |
| fetch_event_strain | GWOSC |
| Example | The Example tool exposed by this server. |
{
"mcpServers": {
"gw-mcp-git": {
"command": "uvx",
"args": ["langchain-mcp-adapters"],
"env": {
"SCITOKEN_FILE": "your-value",
"X509_USER_CERT": "your-value",
"X509_USER_KEY": "your-value",
"X509_USER_PROXY": "your-value"
}
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
| Variable | Description | Required |
|---|---|---|
| SCITOKEN_FILE | Credential the server authenticates with. | Yes |
| X509_USER_CERT | Configuration value read at startup. | Optional |
| X509_USER_KEY | Credential the server authenticates with. | Yes |
| X509_USER_PROXY | Configuration value read at startup. | Optional |
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