Helixar's press piece on Gemma 4 running offline on edge hardware with native function calling, which closes the gap between an agent that can act and an agent that can actuate. It presents HDP-P as an open protocol that puts a cryptographic authorisation layer between the model's function calls and the physical actuator interface.
A Hugging Face Space where a visitor runs a simulated robot arm through a safe routine, then fires an adversarial prompt-injection command with HDP-P off and on. It illustrates a signed Ed25519 delegation token, the six-gate pre-execution guard and the irreversibility classifier rejecting a Class 3 actuation before any motion.
Interactive demo on Hugging Face
Helixar research and open-specification work
These records are included for context and provenance. HDP is credited as Helixar research and open-specification work; this independent publication does not claim sole authorship or imply adoption as an IETF standard.