An independent, evidence-weighted trust comparison of two protocols & tool integration — ranked on verifiable signals, not popularity.
| Signal | A2A / Agent2Agent Protocol | Composio |
|---|---|---|
| HVTrust score | 89.1 | 71.1 |
| Evidence grade | A | B |
| Registry state | Listed | Listed |
| Safety / Integrity (25) | 21.2 | 10.3 |
| Identity / Provenance (18) | 18.0 | 10.8 |
| Transparency (17) | 14.4 | 13.6 |
| Maintenance (20) | 16.4 | 19.1 |
| Adoption (20) | 19.1 | 17.3 |
| GitHub stars | 24.2k | 28.6k |
| Weekly downloads | 2,676,378 | 92,715 |
| Last push | 2026-06-05 | 2026-06-05 |
| Language | Shell | TypeScript |
| OSSF Scorecard | 7.0 | 6.0 |
| Review flags | — | — |
| Recent change | 2026-05-29: HVTrust up 10.2pts (75.2 → 85.4) | 2026-06-11: Activity score up 5pts (87 → 92) |