---
updatedAt: 2026-05-13T05:54:40.000Z
agentTools:
  projectIndex: https://docs.cavatica.org/llms.txt
---

# Connect to a FHIR server

## 1.1 External Connections

FHIR servers are configured as tiles in Platform → External Connections. Each tile represents an external FHIR server; authentication is handled via an external flow initiated when you connect.

<Image align="center" caption="Server tile on External Connections page" src="https://files.readme.io/5d35d0ae0ffbadc4b4463b887b2abf3eec0e3522a97baafc6ecebb5e9a00bff4-image.png" />

**Kids First FHIR server**
Kids First is a research-oriented pediatric/genomics FHIR server. It often uses study tagging, provides phenotype-heavy metadata, and represents files through DocumentReference resources (commonly linking to DRS URLs).
•	Common resources: Patient, ResearchStudy, ResearchSubject, Specimen, Condition, Observation, DocumentReference.
•	Common workflow: study → participants → specimens/phenotypes → file references.

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## 1.2 Connect (SMART / OAuth2)

1. Open Platform → External Connections.
2. Click Connect on the desired server tile.
3. Complete sign-in/consent in the authentication pop-up.
4. After successful login, open the FHIR Viewer link.

<Image align="center" caption="Authorization pop-up for Kids First server" src="https://files.readme.io/48f2be7d2b3228febb1f767ea0e46e240c3e61a3214724de6aa10e62a23ebaef-image.png" />

<Image align="center" caption="Connected state" src="https://files.readme.io/9e81539dda7aede4536532545e15f5e783a0fa2e000c9b84158582f60d47469c-image_22.png" />

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