I found this...

Even I gave a PR number

{
  "Error": null,
  "Failure": "",
  "ProjectResults": [
    {
      "Command": 1,
      "SubCommand": "",
      "RepoRelDir": "a/b/c",
      "Workspace": "default",
      "Error": {
        "RepoRelDir": "a/b/c"
      },
      "Failure": "",
      "PlanSuccess": null,
      "PolicyCheckResults": null,
      "ApplySuccess": "",
      "VersionSuccess": "",
      "ImportSuccess": null,
      "StateRmSuccess": null,
      "ProjectName": ""
    }
  ],
  "PlansDeleted": false
}

API return nothing 🥲

There is a PR in flight that tries to fix this, but it has more broader implications to the code that will need more time to review

I have used this

it does work

you can look at the code to have an idea of how it works