In July 2025, Andbe developed protobuf-based circuit tag serialization for the quantumlib/Cirq repository, enabling metadata tagging to support calibration workflows and discounting semantics. Andbe designed and implemented changes to the Circuit proto schema, introducing fields such as token_constant_index and tag_indices to facilitate robust tagging of circuit metadata. The work included updating the CircuitSerializer in Python to ensure accurate serialization and deserialization of custom tags like CalibrationTag and DiscountTag. Leveraging skills in API design, Protocol Buffers, and quantum computing libraries, Andbe’s contributions established a foundation for improved automation, interoperability, and data fidelity in Cirq’s calibration and pricing pipelines.