Issue one grant per recipient under a single scope. Atomic across the batch.

curl --request POST \
  --url https://backend.branch.flowengineering.com/shared-grants/share-view \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --header 'customer: <customer>' \
  --data '
{
  "branch_id": "<string>",
  "project_id": "<string>",
  "recipients": [
    {
      "email": "<string>",
      "user_group_id": "<string>",
      "user_id": "<string>"
    }
  ],
  "starting_entity_id": "<string>",
  "view_id": "<string>",
  "access_level": "viewer",
  "branch_scope": "branch",
  "expires_at": "<string>",
  "suppress_notification": false
}
'

import requests

url = "https://backend.branch.flowengineering.com/shared-grants/share-view"

payload = {
    "branch_id": "<string>",
    "project_id": "<string>",
    "recipients": [
        {
            "email": "<string>",
            "user_group_id": "<string>",
            "user_id": "<string>"
        }
    ],
    "starting_entity_id": "<string>",
    "view_id": "<string>",
    "access_level": "viewer",
    "branch_scope": "branch",
    "expires_at": "<string>",
    "suppress_notification": False
}
headers = {
    "customer": "<customer>",
    "X-API-Key": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {
    customer: '<customer>',
    'X-API-Key': '<api-key>',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    branch_id: '<string>',
    project_id: '<string>',
    recipients: [{email: '<string>', user_group_id: '<string>', user_id: '<string>'}],
    starting_entity_id: '<string>',
    view_id: '<string>',
    access_level: 'viewer',
    branch_scope: 'branch',
    expires_at: '<string>',
    suppress_notification: false
  })
};

fetch('https://backend.branch.flowengineering.com/shared-grants/share-view', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

{
  "grants": [
    {
      "access_level": "viewer",
      "branch_id": "<string>",
      "branch_scope": "branch",
      "created_at": "<string>",
      "created_by_id": "<string>",
      "expires_at": "<string>",
      "first_viewed_at": "<string>",
      "id": "<string>",
      "preparing": true,
      "project_id": "<string>",
      "recipient_type": "user",
      "starting_entity_id": "<string>",
      "user_email": "<string>",
      "user_group_id": "<string>",
      "user_group_name": "<string>",
      "user_id": "<string>",
      "view_id": "<string>"
    }
  ],
  "invited_user_ids": [
    "<string>"
  ]
}