What is the Nexus Execution Protocol (NEP)?
The Nexus Execution Protocol (NEP) is an open-source execution protocol that sits between probabilistic AI models and operational systems. It evaluates agent intents through Domain Energy Plugins and enforces P(H executes | e > 0) = 0 - no non-compliant action ever commits.
Last updated 2026-06-30
What does NEP stand for and who built it?
NEP stands for Nexus Execution Protocol. It is developed by Hardalion, an infrastructure company founded in 2025.
Hardalion designed NEP through conversations with operators in finance, healthcare, and critical infrastructure who run high-consequence systems. The protocol specification and core engine are open source; enterprise deployments are available through a private program.
What are Domain Energy Plugins?
Domain Energy Plugins (@nexus/finance, @nexus/healthcare, @nexus/defense) encode industry-specific policy graphs as executable logic. Each plugin computes violation energy e for an intent; the core NEP engine enforces the commit boundary.
Finance plugins block unverified transactions above thresholds without dual approval. Healthcare plugins align with EU AI Act requirements and block EMR updates on identity mismatch. Defense plugins enforce cryptographic dual-key signatures before operational commits.
Is NEP open source?
Yes. The NEP protocol specification and core engine are open source. Enterprise deployments, sandbox access, and industry plugins are available through Hardalion's private deployment program at hardalion.com/waitlist.
Open core means teams can inspect, fork, and self-host the commit boundary. Regulated institutions typically engage Hardalion for deployment support, plugin customization, and architecture audits.
Frequently asked questions
What is NEP?
NEP (Nexus Execution Protocol) is Hardalion's open-source deterministic commit boundary for high-risk AI. It evaluates agent intents via Domain Energy Plugins and blocks non-compliant actions before they reach operational systems.
What is the NEP boundary law?
P(H executes | e > 0) = 0. If policy violation energy e is greater than zero, execution probability is zero. No model output overrides this boundary.
Where can I learn more about NEP?
Visit hardalion.com/nexus for the product overview, hardalion.com/architecture for technical details, and docs.hardalion.com for platform documentation.
Related guides
What is Deterministic AI Execution?
Deterministic AI execution is the practice of routing every AI-proposed operational action through a policy engine that …
How Do You Comply When AI Acts in High-Risk Domains?
High-risk AI compliance requires encoding regulatory rules as executable policy evaluated before every agent commit - …