# medOS Developer overview

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

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

Build integrations and hosted clinical apps without crossing medOS clinical, PHI, or deployment authority boundaries.

## What you can use now

- Choose configuration, scoped FHIR/HL7 integration, hosted partner app, or trusted first-party runtime modules based on the smallest required authority.
- Partner JavaScript remains cross-origin inside a sandboxed iframe; it never enters the medOS application bundle.

## Current limits

- Public app submission and general partner activation are not open.

## 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)