The examples in this section use REST API resources to retrieve organization-level information, such as a list of all objects available in your organization.
List Available REST API Versions
Use the Versions resource to list summary information about each REST API version currently available, including the version, label, and a link to each version’s root. You don’t need authentication to retrieve the list of versions.
Use the Limits resource to list your org limits.
Use the Resources by Version resource to list the resources available for the specified API version. This provides the name and URI of each additional resource.
Use the Describe Global resource to list the objects available in your org and available to the logged-in user. This resource also returns the org encoding, as well as maximum batch size permitted in queries.
Get a List of Objects If Metadata Has Changed
Use the Describe Global resource and the If-Modified-Since HTTP header to determine if an object’s metadata has changed.
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