# DevPortal Offline (DOCS-AIRGAP-DEVPORT-64-001) How to use the developer portal in fully offline/sealed environments. ## Serving the portal - Host static build from local object store or file server; no CDN. - Set `DEVPORTAL_OFFLINE=true` to disable external analytics/fonts. ## Auth - Use Authority in offline mode with pre-provisioned tenants; cache JWKS locally. ## Bundles - Provide mirror/bootstrap bundles via offline download page with hashes and DSSE (if available). - Offer time anchors download; display staleness and mirrorGeneration in UI header. ## Search/docs - Bundle docs and search index; disable remote doc fetch. ## Telemetry - Disable remote telemetry; keep console logs only or send to local OTLP endpoint. ## Verification - On load, run self-check to confirm no external requests; fail with clear banner if any detected.