curl --request GET \
  --url https://cloud.onyx.app/api/tool/{tool_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": 123,
  "name": "<string>",
  "description": "<string>",
  "definition": {},
  "display_name": "<string>",
  "in_code_tool_id": "<string>",
  "custom_headers": [
    "<unknown>"
  ],
  "passthrough_auth": true,
  "mcp_server_id": 123,
  "user_id": "<string>",
  "oauth_config_id": 123,
  "oauth_config_name": "<string>",
  "enabled": true,
  "chat_selectable": true,
  "agent_creation_selectable": true,
  "default_enabled": false
}