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Lightpanda vs Agent Role Contracts

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

Lightpanda compared with Agent Role Contracts
DetailLightpanda logo LightpandaAgent Role Contracts logo Agent Role Contracts
What it doesThe AI-native web browser built from scratch for machines Offline checker for AI agent role declarations without executing agents
StageNot given Not given
FoundedNot given Not given
Based inNot given JP
Pricing modelFreemium Open source
PricingExplorer: Free with 10 browser hours per month and 5 concurrent sessions. Builder: $19/month with 300 browser hours per month and 30 concurrent sessions, then $0.08/hour. Enterprise: Custom volume pricing with dedicated support and SLA guarantees. Not given
Key features
  • True headless without CSS, images, layout or GPU compositing
  • Full JavaScript execution via V8
  • CDP-compatible with Playwright and Puppeteer
  • Multi-client concurrent CDP connections in a single process
  • Request interception to block, modify or mock HTTP requests
  • Robots.txt compliance via obey_robots flag
  • 9x faster execution than Chrome headless
  • 16x less memory usage than Chrome headless
  • Built in Zig for performance and efficiency
  • Purpose-built for headless operation without rendering overhead
  • Checks role and authority consistency
  • Validates reviewer-implementer separation
  • Verifies role references exist
  • Checks filesystem write scope boundaries
  • Runs completely offline without network access
  • Three command modes: validate, explain, and handoff
  • Clear exit codes for pass/fail/error states
  • MIT open source license
  • Bundled starter fixtures and examples
What makes it different
  • Not a fork or patch of existing browsers but built completely from scratch
  • Designed specifically for cloud environments rather than adapted from desktop browsers
  • 10x faster execution and 10x less RAM than Chrome headless
  • Isolated environments without persistent state for secure automation
  • Open source under AGPL-3.0 license with production-ready 1.0 release
  • Designed through public feedback dialogue with incorporated role and path mapping improvements
  • Bundles working examples that run without API keys or accounts
Community votes00
DR (Domain Rating by Ahrefs)45 −1 (down) since last check13 no change since last check
Trust Flow (Majestic)289
Citation Flow (Majestic)3629
Referring domains (Majestic)78451

4 details filled in for both companies.

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