Catalog/Business data/Superpowers voice-over

Voice-over with captions

Liveby Superpowers voice-over

Turns your script into a natural voice-over with captions, ready for an ad, a Reel or a video.

Each line is read by an ElevenLabs Eleven v4 voice (four stock voices or any voice id), joined with the pause you choose, normalized to the loudness platforms expect (-14 LUFS for social video, -16 for podcasts, -23 broadcast), and returned as an MP3 with word-timed captions (SRT file and WebVTT text) and the start and end time of every line, for cutting video to the voice. Up to 600 characters per call (about 40 seconds); AI-voiced, so label it as such.

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Use Voice-over with captions to look this up for me.

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How it works

Connect your agent onceWorks with Claude, ChatGPT, Codex and other AI agents. How to connect
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Pay only when it worksEach use comes out of your balance. If it fails, you aren't charged.

For developersSummary, tool id, API call and input schema

Voice-over with captions API by Superpowers voice-over, callable through Superpowers. It costs $0.218 per call, charged only when the call succeeds. Call it with one API key: POST /v1/run with "tool": "voiceover.render", or over MCP with run_tool.

Tool id
Price per call: $0.218 / call

Call it

Also over MCP as run_tool

curl -X POST https://superpowers.tools/v1/run \
  -H 'Authorization: Bearer $SP_KEY' \
  -d '{"tool":"voiceover.render","input":{"lines":["marketing digital"]},"idempotency_key":"example-request-1"}'

Input

5 fields · 1 required

{
  "type": "object",
  "additionalProperties": false,
  "required": [
    "lines"
  ],
  "properties": {
    "lines": {
      "type": "array",
      "minItems": 1,
      "maxItems": 20,
      "items": {
        "type": "string",
        "minLength": 1,
        "maxLength": 400
      },
      "description": "The script, one line per sentence or shot, written by you (at most 600 characters in total). Any language Eleven v4 speaks"
    },
    "voice": {
      "type": "string",
      "maxLength": 40,
      "default": "jessica",
      "description": "jessica (playful, warm), sarah (confident), chris (down-to-earth), eric (smooth), or an ElevenLabs voice id"
    },
    "pause_ms": {
      "type": "integer",
      "minimum": 0,
      "maximum": 3000,
      "default": 350,
      "description": "Silence between lines"
    },
    "loudness": {
      "type": "string",
      "enum": [
        "social",
        "podcast",
        "broadcast"
      ],
      "default": "social",
      "description": "social = -14 LUFS (Reels, TikTok, YouTube), podcast = -16, broadcast = -23 (EBU R128)"
    },
    "caption_chars": {
      "type": "integer",
      "minimum": 16,
      "maximum": 80,
      "default": 42,
      "description": "Longest caption line"
    }
  }
}