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Guardana vs Libretto

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Guardana compared with Libretto
DetailGuardana logo GuardanaLibretto logo Libretto
What it doesOpen-source AI security verification Automatically fix failing Playwright scripts by investigating the live page and opening a GitHub pull request with a proposed code fix
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelOpen source Free
PricingNot given Not given
Key features
  • Scan model and code artifacts offline
  • Probe and monitor live endpoints
  • Grade recorded application runs
  • Diff and compare security runs
  • 58 security rules across build and runtime
  • Python API for integration
  • Custom rule creation with YAML or Python
  • Cost estimation before probing
  • Optional self-hosted collector
  • Automatically investigates failing Playwright scripts against the live page
  • Opens GitHub pull requests with proposed code fixes
  • Works with any browser provider
  • Supports custom LLM provider API keys
  • Integrates into existing Playwright projects without changing fixtures
What makes it different
  • Fully offline artifact scanning with no telemetry or account required
  • Unverified results never marked as clean; handles uncertainty explicitly
  • Works with multiple model APIs and MCP servers regardless of model
  • Re-grade recorded runs without rerunning the application
  • Keep existing Playwright scripts unchanged, only adding automatic repair after failures
  • Free to use, no charges from Libretto
  • Open source under MIT license
Community votes00
DR (Domain Rating by Ahrefs)2 no change since last check27 no change since last check
Trust Flow (Majestic)28
Citation Flow (Majestic)2131
Referring domains (Majestic)22347

4 details filled in for both companies.

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