# Package and hand off your app

**Portal version:** 0.1.0  
**Updated:** 2026-08-28  
**Source menu item:** Upload your app  
**Availability:** Documented and testable

> The source contract and local workflow exist. Access still depends on the target hospital deployment and its policy gates.

Package source with the allowlisted kit command and hand off the immutable application artifact separately.

## What you can use now

- Verify the sibling SHA-256 and exact archive file list.
- Transfer the artifact, signed release, public key, and PHI-free review documents through an approved channel.

## Current limits

- Uploading bytes alone never makes an app installable.

## Next step

Start with the [medOS Developer overview](/developers/platform/overview) and confirm the target hospital’s enabled contracts before production work.

## Canonical references

- [FHIR R4 integration](/integrations/fhir)
- [Public API](/backend/public-api)
- [Security and compliance](/architecture/security-and-compliance)
- [Developer portal status and coverage](/developers/platform/changelog)