webhook-example

JSON 

{
  "openapi": "3.1.0",
  "info": {
    "title": "Webhook Example",
    "version": "1.0.0"
  },
  "webhooks": {
    "newPet": {
      "post": {
        "requestBody": {
          "description": "Information about a new pet in the system",
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/Pet"
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Return a 200 status to indicate that the data was received successfully"
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "Pet": {
        "required": ["id", "name"],
        "properties": {
          "id": {
            "type": "integer",
            "format": "int64"
          },
          "name": {
            "type": "string"
          },
          "tag": {
            "type": "string"
          }
        }
      }
    }
  }
}

YAML 

openapi: 3.1.0
info:
  title: Webhook Example
  version: 1.0.0
# Since OAS 3.1.0 the paths element isn't necessary. Now a valid OpenAPI Document can describe only paths, webhooks, or even only reusable components
webhooks:
  # Each webhook needs a name
  newPet:
    # This is a Path Item Object, the only difference is that the request is initiated by the API provider
    post:
      requestBody:
        description: Information about a new pet in the system
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/Pet'
      responses:
        '200':
          description: Return a 200 status to indicate that the data was received successfully
components:
  schemas:
    Pet:
      required:
        - id
        - name
      properties:
        id:
          type: integer
          format: int64
        name:
          type: string
        tag:
          type: string