RegistryCompare › Guardrails AI vs NeMo Guardrails

Guardrails AI vs NeMo Guardrails

An independent, evidence-based trust comparison of Guardrails AI and NeMo Guardrails, two Security & Guardrails projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.

Guardrails AI leads on trust — 80.6/100 (Grade A) vs 71.3/100 (Grade B), a 9.3-point gap. Full breakdown below.
Signal Guardrails AIguardrails-ai/guardrails NeMo GuardrailsNVIDIA/NeMo-Guardrails
HVTrust score 80.6 71.3
Evidence grade A B
Coverage grade A A
Overall rank #54 #95
Rank in Security & Guardrails #1 #2
GitHub stars 7.2k 6.7k
Last updated 3d ago today
Build provenance Yes No
OSSF Scorecard 6.0 / 10 5.9 / 10
License Apache-2.0 NOASSERTION
Downloads 41k/wk 79k/wk
Trust dimensions (points earned)
Safety / integrity / 25 20.0 12.4
Identity & provenance / 18 18.0 10.8
Transparency / 17 13.6 13.5
Maintenance / 20 15.4 19.8
Adoption / 20 15.4 15.7
Runtime capability surface (full matrix)
MCP server
External providers 2 — Anthropic, OpenAI 1 — OpenAI
Requires API keys Yes No
Plugin surface plugins
Provenance drift Unknown Unknown
Open in the live compare tool → Guardrails AI profile NeMo Guardrails profile More Security & Guardrails →

How to read this: HVTrust (0–100) weighs supply-chain signals (provenance, OSSF Scorecard, signed commits, open license) alongside real-world adoption, scaled by an evidence-confidence factor. Grade bands: A ≥ 80, B ≥ 65, C ≥ 50, D < 50. Signals refresh daily. Full methodology v4.2 →