# API

As described in the [Structure & Versioning of the Standards](https://app.gitbook.com/s/F9fu0tIY1rJUsF03WdAv/standards-for-interoperability-interfaces/structure-and-versioning-of-the-standards "mention"), some standards can be reused by various interfaces (and are, hence, labelled as common and provided as hyperlinks on the left side in this space), some are valid for only for one interface without the intention to reuse them for others.

An overview below:

## List of API Specifications for this Interface

| Link                                                                                                                                                                                                                                           |
| ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [API.COM.01.ASY Search (Async approach)](https://app.gitbook.com/s/F9fu0tIY1rJUsF03WdAv/standards-for-interoperability-interfaces/common-standards-for-interoperability-interfaces/api/methods/api.com.01.asy-search-async-approach "mention") |
| [API.COM.01.SYN Search (Sync approach)](https://app.gitbook.com/s/F9fu0tIY1rJUsF03WdAv/standards-for-interoperability-interfaces/common-standards-for-interoperability-interfaces/api/methods/api.com.01.syn-search-sync-approach "mention")   |
| [API.COM.02 Event Subscription](https://app.gitbook.com/s/F9fu0tIY1rJUsF03WdAv/standards-for-interoperability-interfaces/common-standards-for-interoperability-interfaces/api/methods/api.com.02-event-subscription "mention")                 |
| [API.COM.03 Event Notification](https://app.gitbook.com/s/F9fu0tIY1rJUsF03WdAv/standards-for-interoperability-interfaces/common-standards-for-interoperability-interfaces/api/methods/api.com.03-event-notification "mention")                 |
| [API.COM.04.ASY Status (Async approach)](https://app.gitbook.com/s/F9fu0tIY1rJUsF03WdAv/standards-for-interoperability-interfaces/common-standards-for-interoperability-interfaces/api/methods/api.com.04.asy-status-async-approach "mention") |
| [API.COM.04.SYN Status (Sync approach)](https://app.gitbook.com/s/F9fu0tIY1rJUsF03WdAv/standards-for-interoperability-interfaces/common-standards-for-interoperability-interfaces/api/methods/api.com.04.syn-status-sync-approach "mention")   |