YouTube Transcript & Captions
Full transcript of any YouTube video by video id or URL: captions/subtitles as clean plain text plus timestamped segments, the video's chapter markers, and every caption track it offers so an agent can pick a language and re-fetch. YouTube transcript, video to text, captions extraction, subtitle download, closed captions, speech to text, multilingual, asr and authored tracks. No API key.
MediaLiveeip155:8453Exactvia cdp
YoutubeTranscriptCaptionsSubtitlesVideo-to-text
Calls · 30d
10
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far.
$10.33
Verified settled volume
491 settlements proven x402 by their on-chain EIP-3009 marker.
$0.020
Listed price
As published in the catalog. Always read the live 402 before paying.
11
Calls · 30d
Upstream's own call count for this endpoint, not ours.
8
Unique payers · 30d
Last called 2026-09-03 14:23Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"hint": "This endpoint requires x402 payment. The price and payment options are in the PAYMENT-REQUIRED response header (x402 v2). Pay with an x402 client, then retry to receive the data.",
"llms": "https://youtube.use.x402atlas.com/llms.txt",
"error": "payment_required",
"price": "$0.02 per call",
"method": "GET",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "20000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "20000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
],
"contact": {
"email": "support@x402atlas.com"
},
"openapi": "https://youtube.use.x402atlas.com/openapi.json",
"resource": {
"url": "https://youtube.use.x402atlas.com/transcript",
"tags": [
"youtube",
"transcript",
"captions",
"subtitles",
"video-to-text",
"video-transcript",
"closed-captions",
"chapters",
"speech-to-text",
"rag"
],
"mimeType": "application/json",
"description": "Full transcript of any YouTube video by video id or URL: captions/subtitles as clean plain text plus timestamped segments, the video's chapter markers, and every caption track it offers so an agent can pick a language and re-fetch. YouTube transcript, video to text, captions extraction, subtitle download, closed captions, speech to text, multilingual, asr and authored tracks. No API key.",
"serviceName": "YouTube Transcript & Captions"
},
"x402Version": 2,
"documentation": "https://youtube.use.x402atlas.com/docs"
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.02USDC≈ $0.02 USD
on Base · exact scheme
Pay 0.02 USDC on Base to 0x8C12…Df1b2. The signed payment is good for 5 minutes.
- Paid to
- 0x8C12…Df1b2
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 20000 smallest units
20000units
on Polygon · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x8C12…Df1b2
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
20000units
on Arbitrum · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x8C12…Df1b2
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "20000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "20000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"tier": "standard",
"version": "2",
"merchant": "x402Atlas"
},
"payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
"amount": "20000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"v": "iG9CE55wbtY"
}
},
"output": {
"type": "json",
"example": {
"text": "Good morning. How are you? (Audience) Good. It's been great, hasn't it?",
"chapters": [
{
"title": "Introduction",
"end_ms": 42000,
"start_ms": 0,
"start_time_text": "0:00"
},
{
"title": "Three themes",
"end_ms": 115000,
"start_ms": 42000,
"start_time_text": "0:42"
}
],
"segments": [
{
"text": "Good morning. How are you?",
"end_ms": 29678,
"start_ms": 27103,
"start_time_text": "0:27"
},
{
"text": "(Audience) Good.",
"end_ms": 31105,
"start_ms": 29702,
"start_time_text": "0:29"
}
],
"video_id": "iG9CE55wbtY",
"queried_at": "2026-07-24T12:00:00Z",
"language_code": "en",
"available_transcripts": [
{
"selected": true,
"language_code": "en"
},
{
"type": "asr",
"language_code": "en"
},
{
"language_code": "fr"
}
]
}
}
},
"tags": [
"youtube",
"transcript",
"captions",
"subtitles",
"video-to-text",
"video-transcript",
"closed-captions",
"chapters",
"speech-to-text",
"rag"
],
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"v"
],
"properties": {
"v": {
"type": "string",
"maxLength": 500,
"description": "YouTube video id (11 characters) or a full YouTube video URL"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"video_id",
"queried_at",
"text",
"segments",
"chapters",
"available_transcripts"
],
"properties": {
"note": {
"type": "string",
"description": "Present only on the sample response (a call with no v): a hint that this is a canned example. The paid request ran; no upstream call was made."
},
"text": {
"type": "string",
"description": "Whole transcript as one plain-text block"
},
"chapters": {
"type": "array",
"items": {
"type": "object",
"properties": {
"title": {
"type": "string"
},
"end_ms": {
"type": "integer"
},
"start_ms": {
"type": "integer"
},
"start_time_text": {
"type": "string"
}
}
},
"description": "Chapter markers; empty for videos without chapters"
},
"segments": {
"type": "array",
"items": {
"type": "object",
"required": [
"start_ms",
"text"
],
"properties": {
"text": {
"type": "string"
},
"end_ms": {
"type": "integer",
"description": "Line end offset in milliseconds; absent on tracks that carry only starts"
},
"start_ms": {
"type": "integer",
"description": "Line start offset in milliseconds"
},
"start_time_text": {
"type": "string",
"description": "Line start as displayed, e.g. 0:43"
}
}
}
},
"video_id": {
"type": "string",
"description": "Normalized 11-character video id"
},
"queried_at": {
"type": "string",
"format": "date-time"
},
"language_code": {
"type": "string",
"description": "Language of the track actually served; omitted when the upstream identifies none — never an echo of the request"
},
"available_transcripts": {
"type": "array",
"items": {
"type": "object",
"properties": {
"type": {
"type": "string",
"description": "asr on auto-generated tracks; absent on authored ones"
},
"title": {
"type": "string",
"description": "Track title, on videos with named tracks"
},
"selected": {
"type": "boolean",
"description": "True on the track this response served"
},
"language_code": {
"type": "string"
}
}
},
"description": "Every track this video offers; feed language_code/type/title back to fetch one. A language may appear twice — the authored track and the asr one."
}
}
}
}
}
}
},
"category": "media-processing"
}
}Provenance
- Seen in the source catalog
- 2026-09-03 14:23Z
- Last indexed by Roundhouse
- 2026-09-04 21:40Z
- Last enriched (probe, favicon, geo)
- 2026-09-03 12:45Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 10 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service YouTube Transcript & Captions and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=YouTube%20Transcript%20%26%20Captions' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://youtube.use.x402atlas.com/transcript, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://app.roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://app.roundhouseai.io/skill.md first — it is the whole procedure.