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GraceDB Overview

The Gravitational-Wave Candidate Event Database (GraceDB) is a service operated by the LIGO Scientific Collaboration. It provides a centralized location for aggregating and retrieving information about candidate gravitational-wave events. GraceDB provides an API for programmatic access, and a client package is available for interacting with the API.


Useful information
  • Information about GW alerts and real-time data products is available in the LIGO/Virgo Public Alert Guide.
  • Real-time status of the LIGO Data Grid.
  • Need help? Send an email to computing-help@igwn.org, or LIGO/Virgo users can report issues on the GraceDB Gitlab page.


    • Server code version: 2.11.0