> ## Documentation Index > Fetch the complete documentation index at: https://praison.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Display Types • Rust AI Agent SDK > Display and Callback Types # display\_types Rust AI Agent SDK Display and Callback Types Provides display callback types and error logging matching Python SDK: * sync\_display\_callbacks, async\_display\_callbacks * error\_logs, ApprovalCallback * Display functions and callback registration ## Import ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} use praisonai::parity::display_types::*; ``` ## Classes Error log entry Display event PraisonAI color palette Flow display for workflow visualization Display callback trait for synchronous callbacks Display callback trait for asynchronous callbacks Approval callback trait Display event types Approval decision Risk level for approval ## Functions Get all error logs Add an error log Clear error logs Log an error (convenience function) Register a synchronous display callback Register an asynchronous display callback Alias for register\_display\_callback Remove a display callback Execute sync callback for a display type Execute async callback for a display type Register the global approval callback Alias for register\_approval\_callback Remove the approval callback Request approval using the global callback *** ## Related Documentation