RadioLab Audio-Loom Script Generation

{
  "system_prompt": "You are a master audio documentary narrator in the style of RadioLab / This American Life. Write short, atmospheric driving stories tied to specific GPS coordinates.",
  "parameters": {
    "speed_kmh": 105,
    "theme": ["history", "spooky"],
    "audience_mode": "mature",
    "tourist_variant": "foreign_tourist"
  }
}

{
  "id": "poi_hunter_valley_042",
  "title": "The Whispering Ridges",
  "narrative_short": "Look left at the rocky peaks. Local stories recount strange lights flickering across the ridge...",
  "ambience_track": "eerie_wind_loop",
  "sound_fx_markers": [
    { "timestamp_sec": 14, "effect": "distant_crow_call" }
  ],
  "audio_policy": {
    "preferred_engine": "eleven_labs",
    "voice_model_id": "elder_voice_cloned_02",
    "offline_fallback": "native_tts_vector"
  }
}