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# CloudEvents

## CloudEvents Attributes

This document defines attributes for CloudEvents.

| Attribute                        | Type   | Description                                                                                                                                                                     | Examples                                                                     | Stability                                                        |
| -------------------------------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------- | ---------------------------------------------------------------- |
| `cloudevents.event_id`           | string | The [event_id](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#id) uniquely identifies the event.                                                           | `123e4567-e89b-12d3-a456-426614174000`; `0001`                               | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `cloudevents.event_source`       | string | The [source](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#source-1) identifies the context in which an event happened.                                   | `https://github.com/cloudevents`; `/cloudevents/spec/pull/123`; `my-service` | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `cloudevents.event_spec_version` | string | The [version of the CloudEvents specification](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#specversion) which the event uses.                           | `1.0`                                                                        | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `cloudevents.event_subject`      | string | The [subject](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#subject) of the event in the context of the event producer (identified by source).            | `mynewfile.jpg`                                                              | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
| `cloudevents.event_type`         | string | The [event_type](https://github.com/cloudevents/spec/blob/v1.0.2/cloudevents/spec.md#type) contains a value describing the type of event related to the originating occurrence. | `com.github.pull_request.opened`; `com.example.object.deleted.v2`            | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
