Rest calls for Tooling API object with composite do not work

Question

I'm trying to create multiple ApexClassMember records via REST Tooling API calls.

In official documentation they claim, that You can Create Multiple Records with Fewer Round-Trips

However, in workbench such request returns error "Service not found at: /services/data/v54.0/tooling/composite/sobjects"

My request body

{
  "records": [
{
  "attributes": {
    "type": "ApexClassMember"
  },
  "metadataContainerId": "1dc78000000Gt2nAAC",
  "contentEntityId": "01p78000000CxJ6AAK",
  "body": ""
},
{
  "attributes": {
    "type": "ApexClassMember"
  },
  "metadataContainerId": "1dc78000000Gt2nAAC",
  "contentEntityId": "01p78000000Cw6zAAC",
  "body": ""
}]}

Moreover, record retrieval also does not work. It looks like the whole /tooling/composite does not work.

Answer 1

Definitely a doc bug - as it seems no tooling object supports it. It's sort-of mentioned in this answer - though it says "most objects" don't support it. Yet, I haven't seen an object work on that given endpoint: composite/sobjects.

For your situation, ApexClassMember is also not available in the REST API composite sobjects endpoint either - so it seems you have no option to bulkify your POST call.

For GET, you can use the composite resource (services/data/v54.0/tooling/composite) to do bulk queries on ApexClassMember - you can utilize the query endpoint or the Id of ApexClassMember

{
   "allOrNone" : true,
   "compositeRequest" : [
       {
          "method": "GET",
          "referenceId": "queryWithApexClassMember",
          "url": "/services/data/v54.0/tooling/sobjects/ApexClassMember/400XXXXXXXXXXXX"
       },
       {
          "method": "GET",
          "referenceId": "query2",
          "url": "/services/data/v54.0/tooling/query?q=SELECT+ID+FROM+ApexClassMember"
       }
 
    ]
}

However, when you try to utilize POST on ApexMemberClass in the composite endpoint, you get the following message

"body" : [ {
      "errorCode" : "METHOD_NOT_ALLOWED",
      "message" : "HTTP Method 'POST' not allowed. Allowed are HEAD,GET,PATCH,DELETE"
    } ]

Testing various tooling objects (haven't tested all), they all seem to throw the same error as above.