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The RESTful Service Description Language (RSDL) is a machine- and human-readable XML description of HTTP-based web applications (typically REST web services). [1]The language (defined by Michael Pasternak during his work on oVirt RESTful API) allows documenting the model of the resource(s) provided by a service, the relationships between them, and operations and the parameters that must be ...
API description languages are sometimes called interface description languages (IDLs). The structured description might be used to generate documentation for human programmers; such documentation may be easier to read than free-form documentation, since all documentation generated by the same tool follows the same formatting conventions ...
The Web Application Description Language (WADL) is a machine-readable XML description of HTTP-based web services. [1] WADL models the resources provided by a service and the relationships between them. [1]
An application programming interface (API) is a connection between computers or between computer programs. It is a type of software interface, offering a service to other pieces of software. [1] A document or standard that describes how to build such a connection or interface is called an API specification.
The development of RAML will be overseen by a steering committee of API and UX practitioners, and there is an emerging ecosystem of third-party tools being developed around RAML [8] MuleSoft originally started using Swagger (now OpenAPI Specification ), but decided it was best suited to documenting an existing API, not for designing an API from ...
Introduces resources and allows requests for individual URIs (still all typically POST) for separate actions instead of exposing one universal endpoint (API). The API resources are still generalized but it is possible to identify the scope of each one. Level One design is not RESTful, yet it is organizing the API in the direction of becoming one.
The client can then use SOAP to actually call one of the operations listed in the WSDL file, using for example XML over HTTP. The current version of the specification is 2.0; version 1.1 has not been endorsed by the W3C but version 2.0 is a W3C recommendation. [1] WSDL 1.2 was renamed WSDL 2.0 because of its substantial differences from WSDL 1.1.
An example of a popular web API is the Astronomy Picture of the Day API operated by the American space agency NASA. It is a server-side API used to retrieve photographs of space or other images of interest to astronomers, and metadata about the images. According to the API documentation, [15] the API has one endpoint: