> For the complete documentation index, see [llms.txt](https://docs.echo3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.echo3d.com/api.md).

# API

- [Objects](https://docs.echo3d.com/api/objects.md): Learn the structure of content entries in the API.
- [Queries](https://docs.echo3d.com/api/queries.md): Learn how to query for information on the entries of the project.
- [Data](https://docs.echo3d.com/api/data.md): Learn how to post data to the project.
- [What Metadata is Stored](https://docs.echo3d.com/api/data/what-metadata-is-stored.md): Learn what metadata is held by default in content entries and is available for you to query.
- [Upload](https://docs.echo3d.com/api/upload.md): Learn how to upload assets with a query.
- [Download](https://docs.echo3d.com/api/download.md): Learn how to download assets with a query.
- [Delete](https://docs.echo3d.com/api/delete.md): Learn how to delete assets with a query.
- [Entry Hierarchy](https://docs.echo3d.com/api/entry-hierarchy.md): Learn how to add an entry as a child or parent of another entry
- [Convert & Compress](https://docs.echo3d.com/api/convert.md): Learn how to convert assets with a query.
- [Compress](https://docs.echo3d.com/api/compress.md): Learn how to compress assets with a query.
- [Organize](https://docs.echo3d.com/api/organize.md): The Organize API can help you move assets into folders easily within your project.
- [Version](https://docs.echo3d.com/api/version.md): Learn how to save the location of a user accessing a content entry.
- [Asset Status](https://docs.echo3d.com/api/assetstatus.md): All assets can be assigned a status to communicate and track progress across teams.
- [Locate](https://docs.echo3d.com/api/locate.md): Learn how to save the location of a user accessing a content entry.
- [Search](https://docs.echo3d.com/api/search.md): Learn how to search for 3D models from 3rd party 3D search engines.
- [Search by Image or Model](https://docs.echo3d.com/api/search-by-image-or-model.md): Learn how to search for assets across your collections via image or model.
- [Share Content](https://docs.echo3d.com/api/share-content.md): Learn how to share content across collections.