An independent, evidence-based trust comparison of Agent Browser and Browser Harness, two Browser & Computer Use projects in the HVTracker registry. Scores come from public, checkable signals — supply-chain provenance, OSSF Scorecard, maintenance, and adoption — not popularity.
| Signal | Agent Browservercel-labs/agent-browser | Browser Harnessbrowser-use/browser-harness |
|---|---|---|
| HVTrust score | 85.4 | 87.5 |
| Evidence grade | A | A |
| Coverage grade | B | B |
| Overall rank | #36 | #19 |
| Rank in Browser & Computer Use | #3 | #2 |
| GitHub stars | 38.5k | 16.0k |
| Last updated | today | today |
| Build provenance | Yes | Yes |
| OSSF Scorecard | 3.8 / 10 | 5.3 / 10 |
| License | Apache-2.0 | MIT |
| Downloads | 923k/wk | 1.7M/wk |
| Trust dimensions (points earned) | ||
| Safety / integrity / 25 | 17.2 | 16.7 |
| Identity & provenance / 18 | 18.0 | 18.0 |
| Transparency / 17 | 11.7 | 13.0 |
| Maintenance / 20 | 17.4 | 18.7 |
| Adoption / 20 | 19.0 | 18.4 |
| Runtime capability surface (full matrix) | ||
| MCP server | Implemented | — |
| External providers | 3 — Amazon Bedrock, Browserbase, Redis | — |
| Requires API keys | Yes | No |
| Plugin surface | extensions | plugins |
| Provenance drift | Match | Match |
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 →