> For the complete documentation index, see [llms.txt](https://dev.guardian.hedera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.guardian.hedera.com/guardian/project-comparison/project-comparison-apis.md).

# Project Comparison APIs

Endpoints for comparing Guardian project documents, VP documents, and searching projects by property filters.

**Authentication:** Bearer token required (`Authorization: Bearer <token>`)

***

| Method | Endpoint                              | Description                                                | Auth Required |
| ------ | ------------------------------------- | ---------------------------------------------------------- | ------------- |
| `POST` | `/api/v1/analytics/compare/documents` | Compares two documents and returns the differences         | Yes           |
| `POST` | `/api/v1/projects/compare/documents`  | Compares VP documents across projects                      | Yes           |
| `GET`  | `/api/v1/projects/properties`         | Returns all project property definitions                   | Yes           |
| `POST` | `/api/v1/projects/search`             | Searches for projects matching specified filter parameters | Yes           |

## Endpoints

* [Comparing Documents](/guardian/project-comparison/project-comparison-apis/comparing-documents.md)
* [Comparing VP Documents](/guardian/project-comparison/project-comparison-apis/comparing-vp-documents-v1.md)
* [Retrieves All Properties](/guardian/project-comparison/project-comparison-apis/retrieves-all-properties.md)
* [Search Projects by Filters](/guardian/project-comparison/project-comparison-apis/search-projects-by-filters.md)