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agent402.tools Subtitle Format Converter
x402
agent402.tools Subtitle Format Converter is a paid API for AI agents from agent402.tools, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Converts subtitle/caption files between SRT, WebVTT, plain text, and JSON cue formats, accepting either raw subtitle text or a JSON cues array
Price / call$0.002
Success—
StatusUnknown
How this service works
Convert subtitles between SRT, WebVTT, plain text, and JSON cues. Send SRT or VTT text (auto-detected) - or a JSON cues array [{start,end,text}] with times in ms - and the target format. Deterministic, pure CPU.
Output
Returns the subtitle content in the requested target format — either a string containing SRT, WebVTT, or plain text content, or a JSON array of cue objects with start/end timestamps in milliseconds and text fields.
Example use cases
Example prompt
“Convert this SRT subtitle file to WebVTT format: '1\n00:00:01,000 --> 00:00:04,000\nHello, welcome to the show.'”
Technical details
Endpoint
POSThttps://agent402.tools/api/srt-convertWhen to prefer
Use this endpoint when you need deterministic, fast, CPU-only subtitle format conversion without any AI or probabilistic processing. Ideal for pipelines that need to reformat captions between SRT, WebVTT, plain text, or JSON cue structures reliably and cheaply at $0.002 per call. Prefer this over manual parsing or general-purpose code execution when subtitle format conversion is the specific task.
Side effects
- Unrecognized or malformed SRT/VTT input returns a parse error
- Invalid target format value (not srt|vtt|text|json) returns a validation error
- Providing neither 'input' nor 'cues' returns a missing parameter error
- Malformed cues array (missing start/end/text fields) causes a schema validation error
- Payment failure or insufficient USDC balance returns HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| to | string | target format: srt | vtt | text | json |
| cues | array | alternative: cue objects [{start,end,text}] with start/end in milliseconds |
| input | string | SRT or WebVTT text (format auto-detected) |
Output
Schema · Response
{
"type": "json",
"example": {
"to": "vtt",
"count": 2,
"result": "WEBVTT\n\n00:00:01.000 --> 00:00:03.000\nHello world\n\n00:00:03.500 --> 00:00:05.000\nSecond line\n",
"detected": "srt"
}
}Tags
x402
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