chess402.vercel.app
4 listed endpoints · free reliability snapshot (reduced density)
| endpoint | grade | uptime 30d | conf. |
| /api/puzzle/daily | C 64.9 | 63.3% | 0.75 |
| /api/user | C 55.0 | 83.3% | 0.75 |
| /api/cloud-eval | C 55.0 | 65.0% | 0.75 |
| /api/masters | B 67.9 | 71.7% | 0.75 |
Scores use reduced-density sampling; live probe, full 30-min density and 90-day history via the paid API.