Getting full voice transcript via Speech and Text Analytics API

Trying to grab the complete voice-to-text transcript for a specific interaction. I hit /api/v2/analytics/conversations/summary?interactionIds=12345 but the response only has a snippet, not the full text. Is there a specific flag or a different endpoint to pull the entire transcript? The transcript field in the JSON payload seems to be truncated. Here’s the relevant part of the response:

{
 "transcript": "Agent: Hello, how can I..."
}

What am I missing?