RegistryCompare › Guardrails AI vs HOL Guard

Guardrails AI vs HOL Guard

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

HOL Guard leads on trust — 86.4/100 (Grade A) vs 79.7/100 (Grade B), a 6.7-point gap. Note: HOL Guard's evidence coverage is thinner (coverage B vs A) — its score rests on fewer independent signal types. Full breakdown below.
Signal Guardrails AIguardrails-ai/guardrails HOL Guardhashgraph-online/hol-guard
HVTrust score 79.7 86.4
Evidence grade B A
Coverage grade A B
Overall rank #138 #57
Rank in Security & Guardrails #3 #1
GitHub stars 7.4k 602
Last updated today today
Build provenance Yes Yes
OSSF Scorecard 6.0 / 10 6.0 / 10
License Apache-2.0 Apache-2.0
Downloads 19k/wk 40k/wk
Trust dimensions (points earned)
Safety / integrity / 25 20.0 18.4
Identity & provenance / 18 18.0 18.0
Transparency / 17 13.6 13.6
Maintenance / 20 15.1 20.0
Adoption / 20 15.0 12.8
Runtime capability surface (full matrix)
MCP server Implemented
External providers 3 — Anthropic, Multi-provider (LiteLLM), OpenAI 3 — Anthropic, Google Gemini, Multi-provider (LiteLLM)
Requires API keys Yes No
Plugin surface extensions
Provenance drift Unknown Match
Open in the live compare tool → Guardrails AI profile HOL Guard 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 v4.3 →