Validation evidence
Frozen results, stated with scope.
Results from Kelra’s frozen validation suites; performance varies by input. Each figure below names the cohort and its source artifact.
Visual metrology · V7
The V7 real-world screenshot cohort and release regression report provide the following validated results:
- Integer translation component error: 0/0/0 px median/p90/max for 16 returned estimates.
- Subpixel Euclidean error: 0.018 px median and 0.039 px p90 for five returned fractional estimates.
- Zero false-confident vectors on 22 no-change controls. Separately, all six controlled ambiguous-texture cases abstained.
- Top-3 changed-area localization: 22/22; zero false-positive regions in top three.
- Comparison p95: 0.618 s for the V7 benchmark cohort.
Source: Artifacts/V7/REPORT.md, frozen V7 cohort. The subpixel sample is five estimates; one real translation abstained. These cohort figures do not predict every image.
Codex client compatibility · Interface Hardening V1
The frozen suite used 32 unchanged, blinded tasks in fresh Codex sessions against the updated live MCP executable:
- Tool selection: 32/32 (100%).
- Valid MCP arguments: 32/32 (100%).
- Abstentions respected: 7/7 (100%); no fabricated measurements after unavailable results.
- Unit/status interpretation: 32/32 (100%).
- Accurate final explanations: 31/32 (96.9%).
Source: Artifacts/InterfaceHardeningV1/REPORT.md and its frozen compatibility results. This validates a specific Codex CLI study, not all clients or future versions.
Current source artifacts
The website copy maps to the frozen repository artifacts: Artifacts/V7/REPORT.md, Artifacts/GeneralVisualMetrologyHardeningV1/REPORT.md, and Artifacts/InterfaceHardeningV1/REPORT.md. No example demo measurements are presented as benchmark data.