# Evidence pack

> What is proven live today (health, extract, cad_scene inference, partner import) versus what is not claimed (superiority scores, latency SLAs, SolidWorks native).

Source: https://fourechelon.com/docs/evidence-pack · Machine-readable: https://fourechelon.com/openapi.json · Index: https://fourechelon.com/llms.txt

## Proven live

| Claim | Evidence | Detail |
| --- | --- | --- |
| Public health + status | Live | fourechelon.com/api/health, /api/status, status.fourechelon.com |
| CAD extract → extraction.v1 | Live (paid key) | POST /api/v1/cad/extract; golden-path:production |
| cad_scene → Rowe response | Live (paid key) | POST /api/v1/responses with four-cad.cad_scene.v1 |
| Partner feature-tree import | Live (paid key) | POST /api/v1/cad/import-feature-tree; 401 without key |
| SolidWorks native | Rejected (415) | Export STEP; intentional, not a bug |

## Not proven (and not claimed)

| Claim | Status | Detail |
| --- | --- | --- |
| Vendor superiority scores | Not claimed | The benchmarks page publishes every scoring condition with error bars; Rowe's own score there is a self-check |
| Latency SLAs / p50-p99 | Not claimed | Status latencyMs is a probe sample only |
| Native SolidWorks parse | Out of scope | Use STEP export |
| MT Code / live Checkout demo | Out of scope | Use an existing paid key for API demos |