July 2025 monthly summary focusing on business value and technical milestones across pymc-devs/pymc and pymc-devs/pytensor. Key features delivered include var_names support for the Nutpie sampler with a corresponding dependency update and tests to verify var_names are respected during sampling. Major bugs fixed include a PyTensor Join(COp) axis canonicalization issue where negative constant axes are converted to positive, with an accompanying regression test. The work enhances sampling configurability, correctness, and test coverage across core components, contributing to more reliable experiments and smoother releases. Technologies and skills demonstrated include Python, dependency management, unit testing, cross-repo collaboration, and robust regression testing.