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Overlay Specification

The Overlay Specification defines a document format for information that augments an existing OpenAPI description yet remains separate from the OpenAPI description's source document(s).

This specification is a community-driven, open specification within the OpenAPI Initiative, a Linux Foundation Collaborative Project.

Overlays support a range of scenarios, including:

  • Translating documentation into another language
  • Providing configuration information for different deployment environments
  • Allowing separation of concerns for metadata such as gateway configuration or SLA information
  • Supporting a traits-like capability for applying a set of configuration data, such as multiple parameters or multiple headers, for targeted objects
  • Providing default responses or parameters where they were not explicitly provided
  • Applying configuration data globally or based on filter conditions

Tools that Support Overlays

If you are looking for tools to use with Overlays, try these:

(Is something missing from the list? Send us a pull request to add it!)

Licensing

See: License (Apache-2.0)