This talk offers a comprehensive guide to the MLIR crash reproducer ecosystem, aimed at developers building and maintaining MLIR-based compilers. We will begin with the fundamentals, demonstrating how to generate and use reproducers with mlir-opt for rapid debugging. We will then cover practical integration strategies, showing how to enable this functionality in a programmatic and user-friendly way via the PassManager, using Triton as an example downstream project. The session will explore best practices for effectively using reproducers, including strategies for minimizing them and the critical distinction between standard and local reproducers for pinpointing the exact point of failure.