This case-sensitive code system http://hl7.org/fhir/capability-statement-kind defines the following codes:
Code
Display
Definition
instance
Instance
The CapabilityStatement instance represents the present capabilities of a specific system instance. This is the kind returned by /metadata for a FHIR server end-point.
capability
Capability
The CapabilityStatement instance represents the capabilities of a system or piece of software, independent of a particular installation.
requirements
Requirements
The CapabilityStatement instance represents a set of requirements for other systems to meet; e.g. as part of an implementation guide or 'request for proposal'.