> For the complete documentation index, see [llms.txt](https://docs.geopard.tech/geopard-tutorials/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geopard.tech/geopard-tutorials/nl/api-documentatie/overzicht-van-geopard-api-verzoeken/1.-abonnement-gebeurtenissen-ophalen.md).

# 1. Abonnement: gebeurtenissen ophalen

Volg abonnementen wanneer `INVOEGEN`/`WIJZIGEN`/`VERWIJDEREN` acties plaatsvinden met "Boerderij", "Percelen", "PercelenSatellietAfbeelding", "RasterAnalysemapping", "VectorAnalysemapping", andere entiteiten.

Het abonnementsmechanisme is gebouwd bovenop MQTT en WebSocket. Onze aanbeveling is om te beginnen met integratie door het lezen van de [AWS AppSync Abonnement artikel](https://docs.aws.amazon.com/appsync/latest/devguide/real-time-websocket-client.html). 

{% hint style="info" %}
Abonnementsgebeurtenissen worden verzonden zodra de gebeurtenis heeft plaatsgevonden in de GeoPard-backend.
{% endhint %}

{% hint style="info" %}
Elke abonnementsgebeurtenis heeft een unieke identificatie genaamd `uuid`, wat nuttig is om verwerkte en gemiste gebeurtenissen te filteren die zijn opgevraagd vanaf [82. Vraag: Herstel abonnementsgebeurtenissen](/geopard-tutorials/nl/api-documentatie/overzicht-van-geopard-api-verzoeken/82.-query-abonnementsgebeurtenissen-herstellen.md).
{% endhint %}

{% code lineNumbers="true" %}

```graphql
abonnement VolgPlatformGebeurtenis {
  volgPlatformGebeurtenis(userUuid: "<placeholder_of_user_uuid>") {
    uuid
    userUuid
    actie
    nodePath {
      entiteit
      uuid
    }
  }
}
```

{% endcode %}


---

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