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SRT Subtitle Generator (x402 Pay-Per-Call)
x402
SRT Subtitle Generator (x402 Pay-Per-Call) is a paid API for AI agents from 107-189-20-242.sslip.io, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).
Converts plain transcript text into a timed SRT subtitle file, with configurable cue duration, billed at $0.05 USDC per call via x402 on Base mainnet.
Price / call$0.05
Success—
StatusUnknown
How this service works
x402-paid micro endpoints: SRT subtitle generation, Persian<->English AI translation, USDC-on-Base invoice creation. Pay per call with USDC on Base via x402 v2.
Output
Returns a JSON object containing 'srt' (a fully formatted SRT subtitle file as a string, with sequential cue numbers, timestamps, and text blocks) and 'cueCount' (an integer indicating how many subtitle cues were generated).
Example use cases
YouTube video subtitle generation
“I have the auto-transcript from my YouTube video about cooking — can you turn it into a proper SRT subtitle file with 4-second segments? The title should be 'Easy Pasta Recipes'.”
Podcast accessibility captions
“Convert this podcast transcript into an SRT file so I can add captions to the video version. Use 6-second segments and title it 'Tech Talk Episode 42'.”
Online course closed captioning
“I need an SRT subtitle file from this lecture transcript for my online course. Keep the default 5-second cues and use 'Introduction to Machine Learning' as the title.”
Technical details
Endpoint
POSThttps://107-189-20-242.sslip.io/x402/srtWhen to prefer
Choose this endpoint when you need a quick, pay-per-use SRT subtitle file generated from plain transcript text without setting up a subscription or managing API keys — ideal for one-off subtitle jobs, low-volume workflows, or agent pipelines that already use USDC on Base for micropayments via x402.
Side effects
- Missing required 'text' field returns a 400-level error
- Empty or whitespace-only text may produce zero cues or an error
- Very long transcripts may time out or be truncated
- Invalid segSecs value (e.g. zero or negative) may cause errors or fall back to default
- Payment failure via x402 (insufficient USDC balance or wrong network) blocks the call entirely
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| textrequired | string | Transcript text to convert into subtitles |
| title | string | Optional title for the SRT |
| segSecs | number | Seconds per cue (default 5) |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| srt | string | |
| cueCount | integer |
Tags
x402
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