An AsyncAPI document is a file that defines and annotates the different components of a specific Event-Driven API.
The file format must be JSON or YAML; however, only the subset of YAML that matches the JSON capabilities is allowed.
1asyncapi: 3.0.0
2info:
3title: Example application
4version: '0.1.0'
5channels:
6userSignup:
7 address: 'user/signedup'
8 messages:
9 userSignedupMessage:
10 description: A message describing that a user just signed up.
11 payload:
12 type: object
13 additionalProperties: false
14 properties:
15 fullName:
16 type: string
17 email:
18 type: string
19 format: email
20 age:
21 type: integer
22 minimum: 18
23operations:
24publishUserSignedup:
25 action: 'send'
26 channel:
27 $ref: '#/channels/userSignup'The AsyncAPI document is a machine-readable definition of your Event-Driven API. That document can be used afterward to generate documentation and code, validate the messages that Example application sends, and even apply API management policies to your messages before they arrive at the broker.
Your API documentation is now machine-readable (easily parseable by code) so the myriad of useful applications is endless.
