# Keycloak SPI to retrieve data from header

**URL:** <https://forum.keycloak.org/t/keycloak-spi-to-retrieve-data-from-header/26928>\
**Category:** Miscellanaeous\
**Tags:** authentication\
**Created:** [July 9, 2024, 10:25pm UTC](https://forum.keycloak.org/t/keycloak-spi-to-retrieve-data-from-header/26928 "2024-07-09T22:25:26Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![festusokin](https://avatars.discourse-cdn.com/v4/letter/f/aca169/32.png) [@festusokin](https://forum.keycloak.org/u/festusokin)\
**Post date:** [July 9, 2024, 10:25pm UTC](https://forum.keycloak.org/t/keycloak-spi-to-retrieve-data-from-header/26928/1 "2024-07-09T22:25:26Z")

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Hello.

I am exploring the possibility of creating an SPI to retrive some data from the http header. Can any of the default Keycloak SPI be used to achieve this?