I have noticed that your OpenAPI spec is incorrect in places.
The following is a log of where errors occurred in GitHub - ogen-go/ogen: OpenAPI v3 code generator for go.
$ ogen -package zoomphone -target zoomphone -clean ZoomPhoneMasterAPISpec.json
- ZoomPhoneMasterAPISpec.json:55495:25 -> "tokenUrl" MUST be in the form of a URL: parse "": empty url
55492 | "flows": {
55493 | "authorizationCode": {
55494 | "authorizationUrl": "/",
→ 55495 | "tokenUrl": "",
55496 | "refreshUrl": "",
55497 | "scopes": {
55498 | "phone:master": "phone:master",
55499 | "phone:read:list_account_settings:master": "phone:read:list_account_settings:master",
generation failed:
main.run
/Users/tadayuki/.go/pkg/mod/github.com/ogen-go/ogen@v1.2.2/cmd/ogen/main.go:377
.....
$ ogen -package zoomphone -target zoomphone -clean ZoomPhoneMasterAPISpec.json
- ZoomPhoneMasterAPISpec.json:29943:25 -> path parameters must be required
29940 | "name": "exceptionRuleId",
29941 | "in": "path",
29942 | "description": "The exception rule ID.",
→ 29943 | "required": false,
29944 | "schema": {
29945 | "type": "string",
29946 | "example": "2ypsHHwTTFK-fzZJkudYwA"
29947 | }
generation failed:
main.run
/Users/tadayuki/.go/pkg/mod/github.com/ogen-go/ogen@v1.2.2/cmd/ogen/main.go:377