export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    https://app.posthog.com/api/projects/:project_id/groups/

{
  "next": "string",
  "previous": "string",
  "results": [
    {
      "group_type_index": -2147483648,
      "group_key": "string",
      "group_properties": {
        "property1": null,
        "property2": null
      },
      "created_at": "2019-08-24T14:15:22Z"
    }
  ]
}

export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    https://app.posthog.com/api/projects/:project_id/groups/find/

{
  "group_type_index": -2147483648,
  "group_key": "string",
  "group_properties": {
    "property1": null,
    "property2": null
  },
  "created_at": "2019-08-24T14:15:22Z"
}

export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    https://app.posthog.com/api/projects/:project_id/groups/property_definitions/

{
  "group_type_index": -2147483648,
  "group_key": "string",
  "group_properties": {
    "property1": null,
    "property2": null
  },
  "created_at": "2019-08-24T14:15:22Z"
}

export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    https://app.posthog.com/api/projects/:project_id/groups/property_values/

{
  "group_type_index": -2147483648,
  "group_key": "string",
  "group_properties": {
    "property1": null,
    "property2": null
  },
  "created_at": "2019-08-24T14:15:22Z"
}

export POSTHOG_PERSONAL_API_KEY=[your personal api key]
curl \
    -H "Authorization: Bearer $POSTHOG_PERSONAL_API_KEY" \
    https://app.posthog.com/api/projects/:project_id/groups/related/

{
  "group_type_index": -2147483648,
  "group_key": "string",
  "group_properties": {
    "property1": null,
    "property2": null
  },
  "created_at": "2019-08-24T14:15:22Z"
}