> ## Documentation Index
> Fetch the complete documentation index at: https://plain-docs-orca-916-agent-docs-restructure.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Events

> Log important events to have the full picture of what happened in Plain.

When helping a customer it can be useful to have context about their recent activity in your product. For example, if someone is getting in touch about a 401 error, it could be important to know that they recently deleted an API key in their settings.

<Snippet file="graphql/sdk-note.mdx" />

Events are created via the Plain API and you have full control of what they look like using Plain's UI components.

There are two types of events

* **[Customer events](/graphql/events/create-customer-event)**: these are created in every existing thread for a customer. When a new thread is created (e.g. by an inbound communication, or by calling the [createThread](/graphql/threads/create) endpoint) the **25** most recent events are shown.
* **[Thread events](/graphql/events/create-thread-event)**: these events belong to a single thread, and only appear in a single thread's timeline.

## UI components

To define what each event should look like, you use the Plain UI components. All the components are documented in the [Plain UI Components](/ui-components/) section.

### Playground

The UI Components Playground lets you build and preview the component JSON used to create an event. Use this to prototype an event before starting to build your integration.

[**UI Components Playground →**](https://app.plain.com/developer/ui-components-playground/)