Help Center/ API Gateway/ API Reference/ Dedicated Gateway APIs (V2)/ API Management/ Verifying the API Definition
Updated on 2025-12-26 GMT+08:00
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Verifying the API Definition

Function

This API is used to verify the API definition, that is, whether the API path or name already exists.

Calling Method

For details, see Calling APIs.

Authorization Information

Each account has all the permissions required to call all APIs, but IAM users must be assigned the required permissions.

  • If you are using role/policy-based authorization, see Permissions Policies and Supported Actions for details on the required permissions.
  • If you are using identity policy-based authorization, the following identity policy-based permissions are required.

    Action

    Access Level

    Resource Type (*: required)

    Condition Key

    Alias

    Dependencies

    apig:api:checkApiPathOrApiNameExistOrNot

    Read

    instance *

    g:ResourceTag/<tag-key>
    • apig:apis:get
    • apig:instance:get
    • apig:apiGroup:get

URI

POST /v2/{project_id}/apigw/instances/{instance_id}/apis/check

Table 1 Path Parameters

Parameter

Mandatory

Type

Description

project_id

Yes

String

Project ID. For details about how to obtain it, see Obtaining a Project ID.

instance_id

Yes

String

Gateway ID, which can be obtained from the gateway information on the APIG console.

Request Parameters

Table 2 Request header parameters

Parameter

Mandatory

Type

Description

X-Auth-Token

Yes

String

User token. It 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 a token.
Table 3 Request body parameters

Parameter

Mandatory

Type

Description

name

No

String

API name.

This parameter is mandatory when type is set to name.

req_method

No

String

Request method.

This parameter is mandatory when type is set to path.

req_uri

No

String

Access address of the API.

This parameter is mandatory when type is set to path.

match_mode

No

String

API matching mode:

  • SWA: Prefix match

  • NORMAL: Exact match

This parameter is mandatory when type is set to path.

group_id

No

String

Group ID.

This parameter is mandatory for checking for duplicate API definitions in the group.

roma_app_id

No

String

Integration application ID.

This is not supported currently.

api_id

No

String

ID of the API to be compared.

type

Yes

String

Verification type:

  • path: path type

  • name: name type

Response Parameters

Status code: 204

No Content

Status code: 400

Table 4 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error description.

Status code: 401

Table 5 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error description.

Status code: 403

Table 6 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error description.

Status code: 404

Table 7 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error description.

Status code: 500

Table 8 Response body parameters

Parameter

Type

Description

error_code

String

Error code.

error_msg

String

Error description.

Example Requests

{
  "type" : "name",
  "name" : "api_demo"
}

Example Responses

Status code: 400

Bad Request

{
  "error_code" : "APIG.3202",
  "error_msg" : "The API name already exists, api_name:api_demo"
}

Status code: 401

Unauthorized

{
  "error_code" : "APIG.1002",
  "error_msg" : "Incorrect token or token resolution failed"
}

Status code: 403

Forbidden

{
  "error_code" : "APIG.1005",
  "error_msg" : "No permissions to request this method"
}

Status code: 404

Not Found

{
  "error_code" : "APIG.3030",
  "error_msg" : "The instance does not exist;id:f0fa1789-3b76-433b-a787-9892951c620ec"
}

Status code: 500

Internal Server Error

{
  "error_code" : "APIG.9999",
  "error_msg" : "System error"
}

Status Codes

Status Code

Description

204

No Content

400

Bad Request

401

Unauthorized

403

Forbidden

404

Not Found

500

Internal Server Error

Error Codes

See Error Codes.

Parent topic: API Management