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Capability Statement

A capability statement is a set of capabilities of a FHIR Server that may be used as a statement of actual server functionality or a statement of required or desired server implementation.

0. References

1. Capabilities

API to support getting the NRLS server capability statement.

1.1 Capabilities Request Headers

The Capabilities Interaction supports the following HTTP request headers:

Header Value Conformance
Accept The Accept header indicates the format of the response the client is able to understand, this will be one of the following application/fhir+json or application/fhir+xml. See the RESTful API Content types section. MAY
Authorization The Authorization header will carry the base64url encoded JSON web token required for audit on the spine - see Access Tokens and Audit (JWT) for details. MUST
fromASID Client System ASID MUST
toASID The Spine ASID MUST

1.2 Capabilities Interaction (Get the NRLS CapabilityStatement)

The /metadata path on the root of the NRLS FHIR server will return the capability statement for the FHIR server.

For details of this interaction - see HL7 FHIR STU3 RESTful API.

1.3 Capabilities Response

Success:

  • SHALL return a 200 OK HTTP status code on successful retrieval of the capability statement.
  • SHALL return a capability statement which conforms to the standard FHIR CapabilityStatement

Error Handling:

The NRLS Server is expected to always be able to return a valid capability statement.

2. Example

2.1 Capabilities Request Query

Retrieve the capability statement from the NRLS Server, the format of the response body will be xml.

2.1.1. cURL

curl -H 'Accept: application/fhir+xml' -H 'Authorization: BEARER [token]' -X GET '[baseUrl]/metadata'

2.2 Query Response

2.2.1 Http Headers

2.2.2 Response Body

An example NRLS CapabilityStatement of kind Requirements is shown below:

2.3 C#

var client = new FhirClient("http://[fhir_base]/");
client.PreferredFormat = ResourceFormat.Json;
var resource = client.CapabilityStatement();
FhirSerializer.SerializeResourceToXml(resource).Dump();

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