# NASA CMR GraphQL API

The NASA Common Metadata Repository (CMR) GraphQL API provides a unified interface for querying and managing Earth science metadata across NASA data centers. It exposes collections, granules, variables, services, tools, citations, visualizations, grids, groups, subscriptions, ACLs, and order options through a single GraphQL endpoint. The API supports both public queries (no authentication required) and authenticated operations for accessing restricted resources or performing mutations.

**Endpoint:** https://graphql.earthdata.nasa.gov/api

**Documentation:** https://graphql.earthdata.nasa.gov/docs/introduction/introduction/

**References:**
- Documentation: https://graphql.earthdata.nasa.gov/docs/introduction/introduction/
- GettingStarted: https://graphql.earthdata.nasa.gov/docs/getting-started/
- GitHubRepository: https://github.com/nasa/cmr-graphql