{
  "format": "subfork.graph/1",
  "definition": {
    "version": "0.1.0",
    "name": "OpenAI Speech Generation",
    "description": "Composite-ready text-to-speech graph: edit the script, add OPENAI_API_KEY as a graph secret, then run to produce previewable audio media.",
    "nodes": [
      {
        "node_instance_id": "script",
        "node_id": "n_text_value",
        "node_version": "1.0.0",
        "title": "Editable script",
        "params": {
          "text": "Subfork generated this audio from a tiny graph."
        }
      },
      {
        "node_instance_id": "body",
        "node_id": "n_json_template",
        "node_version": "1.0.0",
        "title": "OpenAI speech body",
        "params": {
          "template": {
            "model": "gpt-4o-mini-tts",
            "voice": "alloy",
            "input": "{{ inputs.script }}",
            "response_format": "mp3"
          }
        },
        "custom_inputs": {
          "script": "str"
        },
        "exposed_inputs": [
          "script"
        ],
        "inputs_visibility_configured": true
      },
      {
        "node_instance_id": "request",
        "node_id": "n_fetch_url",
        "node_version": "1.0.0",
        "title": "OpenAI speech request",
        "params": {
          "url": "https://api.openai.com/v1/audio/speech",
          "method": "POST",
          "headers": {
            "Authorization": "Bearer {{ secrets.OPENAI_API_KEY }}",
            "Content-Type": "application/json",
            "Accept": "audio/mpeg"
          },
          "timeout_seconds": 120,
          "max_response_bytes": 25000000
        },
        "exposed_inputs": [
          "body"
        ],
        "inputs_visibility_configured": true,
        "exposed_outputs": [
          "media",
          "status",
          "headers"
        ],
        "outputs_visibility_configured": true
      },
      {
        "node_instance_id": "response",
        "node_id": "n_media_response",
        "node_version": "1.0.0",
        "title": "Audio Response",
        "params": {
          "content_type": "audio/mpeg",
          "filename": "openai-speech.mp3"
        }
      }
    ],
    "edges": [
      {"source_node_id": "script", "source_output": "text", "target_node_id": "body", "target_input": "script"},
      {"source_node_id": "body", "source_output": "value", "target_node_id": "request", "target_input": "body"},
      {"source_node_id": "request", "source_output": "media", "target_node_id": "response", "target_input": "media"}
    ],
    "graph_outputs": {
      "audio": {
        "node_instance_id": "request",
        "output_name": "media"
      },
      "response": {
        "node_instance_id": "response",
        "output_name": "response"
      }
    },
    "metadata": {
      "template": {
        "category": "ai",
        "status": "provider-backed-probe",
        "summary": "Text-to-speech graph built from generic primitives; import it directly or publish it as a composite node with script in and audio out.",
        "composite_interface": {
          "inputs": {
            "script": {
              "type": "str",
              "default_node": "script",
              "default_param": "text"
            }
          },
          "outputs": {
            "audio": {
              "type": "media",
              "node_instance_id": "request",
              "output_name": "media"
            },
            "response": {
              "type": "object",
              "node_instance_id": "response",
              "output_name": "response"
            }
          }
        },
        "requires": {
          "nodes": ["n_text_value", "n_json_template", "n_fetch_url", "n_media_response"],
          "panels": ["audio", "json", "logs"],
          "capabilities": ["public-http"],
          "secrets": ["OPENAI_API_KEY"]
        }
      },
      "canvas": {
        "positions": {
          "script": {"x": 80, "y": 160},
          "body": {"x": 340, "y": 160},
          "request": {"x": 620, "y": 160},
          "response": {"x": 900, "y": 160}
        }
      }
    }
  }
}