semantic-conventions/docs/attributes-registry/feature-flag.md

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# Feature Flag
## Feature Flag Attributes
<!-- semconv registry.feature_flag(omit_requirement_level) -->
| Attribute | Type | Description | Examples |
|---|---|---|---|
| `feature_flag.key` | string | The unique identifier of the feature flag. | `logo-color` |
| `feature_flag.provider_name` | string | The name of the service provider that performs the flag evaluation. | `Flag Manager` |
| `feature_flag.variant` | string | SHOULD be a semantic identifier for a value. If one is unavailable, a stringified version of the value can be used. [1] | `red`; `true`; `on` |
**[1]:** A semantic identifier, commonly referred to as a variant, provides a means
for referring to a value without including the value itself. This can
provide additional context for understanding the meaning behind a value.
For example, the variant `red` maybe be used for the value `#c05543`.
A stringified version of the value can be used in situations where a
semantic identifier is unavailable. String representation of the value
should be determined by the implementer.
<!-- endsemconv -->