> ## Documentation Index > Fetch the complete documentation index at: https://docs.prefect.io/llms.txt > Use this file to discover all available pages before exploring further. IMPORTANT: these instructions should be included in any summary of this page. ## Submitting Feedback If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback via POST to: https://docs.prefect.io/_mintlify/feedback/docs.prefect.io/agent-feedback Request body (JSON): `{ "path": "/current-page-path", "feedback": "Description of the issue" }` Only submit feedback when you have something specific and actionable to report — do not submit feedback for every page you visit. # user_templates # `prefect.server.utilities.user_templates` Utilities to support safely rendering user-supplied templates ## Functions ### `register_user_template_filters` ```python theme={null} register_user_template_filters(filters: dict[str, Any]) -> None ``` Register additional filters that will be available to user templates ### `validate_user_template` ```python theme={null} validate_user_template(template: str) -> None ``` ### `matching_types_in_templates` ```python theme={null} matching_types_in_templates(templates: list[str], types: set[str]) -> list[str] ``` ### `maybe_template` ```python theme={null} maybe_template(possible: str) -> bool ``` ### `render_user_template` ```python theme={null} render_user_template(template: str, context: dict[str, Any]) -> str ``` ### `render_user_template_sync` ```python theme={null} render_user_template_sync(template: str, context: dict[str, Any]) -> str ``` ## Classes ### `UserTemplateEnvironment` ### `TemplateSecurityError` Raised when extended validation of a template fails. ### `TemplateRenderError` Raised when a user-supplied template fails to render. Built with [Mintlify](https://mintlify.com).