The BEAGLE library has been published in Systematic Biology and is under development on Google code. BEAGLE is a very exciting project: it has been designed to make the most of various chip architectures (GPUs, OpenMP and SSE) in computing likelihoods. Several popular programs (MrBayes, BEAST and Garli) interface with BEAGLE, and the author list is a who's who in computational biology. In the BEAGLE source tree there is an example that demonstrates how python can interface with BEAGLE. Here, by way of a test script, I demonstrate a perl library that does the same, but with the data handling of Bio::Phylo.