# Response

Discover the responses and metadata provided by the SDK.

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Use the summary below to quickly jump to a specific topic:

- [FetchResponse](/reference/sdk/php/api/response/fetch-response): Learn how to read the result of a content fetch.
- [SlotMetadata](/reference/sdk/php/api/response/slot-metadata): Learn how to read the metadata of fetched content.
- [ContentSource](/reference/sdk/php/api/response/content-source): Learn where the fetched content came from.
- [ExperienceMetadata](/reference/sdk/php/api/response/experience-metadata): Learn how to read the experience that served the content.
- [ExperimentMetadata](/reference/sdk/php/api/response/experiment-metadata): Learn how to read the experiment that served the content.