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Help Center/ EventGrid/ API Reference/ APIs/ Event Schema Management/ Creating a Custom Event Schema

Creating a Custom Event Schema

Updated on 2025-05-06 GMT+08:00

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Function

This API is used to create a custom event schema.

URI

POST /v1/{project_id}/schemas

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Tenant resource space ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. The token can be obtained by calling the IAM API used to obtain a user token. The value of X-Subject-Token in the response header is the user token.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
name	Yes	String	Name of the event schema. The value must be unique under a tenant. Only letters, digits, periods (.), underscores (_), and hyphens (-) are allowed. It must start with a letter or digit.
description	No	String	Description of the event schema.
compatibility	Yes	String	Compatibility of the event schema.
format	No	String	Schema content format.
definition	Yes	String	Event schema content definition.

Response Parameters

Status code: 200

**Table 4** Response header parameters
Parameter	Type	Description
X-Request-Id	String	This field is the request ID number for task tracking. Format is request_uuid-timestamp-hostname.

**Table 5** Response body parameters
Parameter	Type	Description
id	String	ID of the event schema.
name	String	Name of the event schema. The value must be unique under a tenant.
description	String	Description of the event schema.
compatibility	String	Compatibility of the event schema.
provider_type	String	Type of the event source provider, which can be OFFICIAL (official event source) or CUSTOM (custom event source).
format	String	Format of the event schema.
number_of_versions	Integer	Number of event schema versions.
created_time	String	Time when the event schema is created.
updated_time	String	Time when the event schema is updated.
version	Integer	Current version number of the event schema.
definition	String	Event schema content definition.

Example Requests

Create a schema.

POST https://{endpoint}/v1/{project_id}/schemas

{
  "name" : "file.upload",
  "description" : "Schema definition for a file upload event.",
  "compatibility" : "NONE",
  "format" : "OPENAPI_3_0",
  "definition" : "{\"$schema\": \"http://json-schema.org/draft-06/schema#\",\"title\": \"fileUpload\",\"definitions\": {\"fileUpload\": {\"properties\": {\"fileName\": {\"type\": \"string\"},\"fileSize\": {\"type\": \"integer\"}},\"required\": [\"foo\",\"bar\"],\"type\": \"object\"}},\"properties\": {\"specversion\": {\"type\": \"string\"},\"id\": {\"type\": \"string\"},\"type\": {\"type\": \"string\"},\"source\": {\"type\": \"string\"},\"subject\": {\"type\": \"string\"},\"datacontenttype\": {\"type\": \"string\"},\"dataschema\": {\"type\": \"string\"},\"time\": {\"format\": \"date-time\",\"type\": \"string\"},\"data\": {\"$ref\": \"#/definitions/fileUpload\"}},\"required\": [\"id\",\"source\",\"time\",\"type\",\"specversion\"],\"type\": \"object\"}"
}

Example Responses

Status code: 200

Demo Information

{
  "id" : "2a0ee4f2-78a4-4122-80af-7455e37f64ee",
  "name" : "file.upload",
  "description" : "Schema definition for a file upload event.",
  "compatibility" : "NONE",
  "provider_type" : "CUSTOM",
  "format" : "OPENAPI_3_0",
  "number_of_versions" : 1,
  "created_time" : "2021-12-09 09:00:00",
  "updated_time" : "2021-12-09 09:00:00",
  "version" : 1,
  "definition" : "{\"$schema\": \"http://json-schema.org/draft-06/schema#\",\"title\": \"fileUpload\",\"definitions\": {\"fileUpload\": {\"properties\": {\"fileName\": {\"type\": \"string\"},\"fileSize\": {\"type\": \"integer\"}},\"required\": [\"foo\",\"bar\"],\"type\": \"object\"}},\"properties\": {\"specversion\": {\"type\": \"string\"},\"id\": {\"type\": \"string\"},\"type\": {\"type\": \"string\"},\"source\": {\"type\": \"string\"},\"subject\": {\"type\": \"string\"},\"datacontenttype\": {\"type\": \"string\"},\"dataschema\": {\"type\": \"string\"},\"time\": {\"format\": \"date-time\",\"type\": \"string\"},\"data\": {\"$ref\": \"#/definitions/fileUpload\"}},\"required\": [\"id\",\"source\",\"time\",\"type\",\"specversion\"],\"type\": \"object\"}"
}