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

# JSON REST API

- [Overview](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/json-api.md): Use the Elements CMS JSON REST API for headless frontends, apps, and scripts.
- [Installation](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/installation.md): Install requirements and verify the JSON REST API endpoint.
- [Authentication and API Keys](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/authentication.md): Create API keys and authenticate JSON REST API requests.
- [Quickstart](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/quickstart.md): Walk through the core JSON REST API workflow in a few curl commands.
- [Reference](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/reference.md): Route index and conventions for the JSON REST API.
- [Collections](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/reference/collections.md): List content collections configured for the site.
- [Items](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/reference/items.md): List, read, create, update, and delete CMS content items.
- [Resources](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/reference/resources.md): Upload, list, move, rename, and delete CMS resources.
- [Versions](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/reference/versions.md): Read item version history and restore previous versions.
- [Settings](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/reference/settings.md): Read and update selected Online Editor settings.
- [Search and Feeds](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/reference/search-and-feeds.md): Search index, tags, RSS, sitemap, related items, and legacy public routes.
- [Errors](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/errors.md): JSON REST API response envelopes, status codes, and troubleshooting.
- [Changelog](https://docs.realmacsoftware.com/elements-docs/cms/json-rest-api/changelog.md): JSON REST API versioning policy and notable changes.


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