# Response serializers As of the current version, API Builder does not support custom response serializers. The API responses return the entire model, including all fields defined within the model. While custom response serializers are not currently available, we acknowledge the potential benefits of providing more flexible response structures. The development team is considering this feature for future updates to enhance API Builder's capabilities and meet our users' evolving needs. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://www.apibuilder.com/home/endpoints/response-serializers.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.