OPERATIONS
Data retention and privacy
How Four Echelon handles API metadata, uploaded CAD files, and model outputs. Use this page when answering security questionnaires or designing customer data flows.
Retention summary
API request metadataBilling period + audit windowRequest ids, route, token counts, and status codes for metering and support.
Uploaded CAD filesProcessing onlyConverter input is processed in memory for extraction; do not rely on long-term storage unless your integration persists outputs.
Model outputsCustomer responsibilityStore reasoning_scene and extraction JSON in your systems if you need history.
Training dataNot customer uploads by defaultProduction inference does not use customer CAD uploads for model training unless a separate agreement says otherwise.