# API Reference

## API Reference

- [SpaceOne APIs](https://spaceone-dev.gitbook.io/api-reference/master.md): Essential guideline for SpaceOne APIs with certain specification.
- [Search Query](https://spaceone-dev.gitbook.io/api-reference/common-v1/search-query.md): API's basic search query specifications which implements search over regex, etc.
- [Filter Operators](https://spaceone-dev.gitbook.io/api-reference/common-v1/search-query/filter-options.md): Default filter and Custom filter operator and its descriptions
- [Statistics Query](https://spaceone-dev.gitbook.io/api-reference/common-v1/statistics-query.md): Basic query for statistics
- [Ex.1 case: Project](https://spaceone-dev.gitbook.io/api-reference/common-v1/statistics-query/ex.1-case-project.md): Sample statistics query case of Project
- [Stat API](https://spaceone-dev.gitbook.io/api-reference/statistics-v1/untitled.md): Query for statistics
- [Ex.1 case: Service Account](https://spaceone-dev.gitbook.io/api-reference/statistics-v1/untitled/ex.md)
- [Ex.2 case: Project](https://spaceone-dev.gitbook.io/api-reference/statistics-v1/untitled/ex.2-case-project.md)