Utilities · x402

Full transcript of any YouTube video by video id or URL: captions/subtitles as clean pl…

by youtube.use.x402atlas.com · discovered, not yet claimed by its owner · updated 2026-10-12

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

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.

Tags: youtube · transcript · captions · subtitles · video-to-text · bazaar

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/27175.json for the price and payment options.
Pay. Call GET https://youtube.use.x402atlas.com/transcript. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Polygon, Arbitrum One, Solana, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.02 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Polygon, Arbitrum One, Solana
Calls (30d): 11 · 6 unique payers (third-party data from the public x402 Bazaar)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.02	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Polygon eip155:137	USDC	$0.02	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Arbitrum One eip155:42161	USDC	$0.02	0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.02	ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x8C128f1Ee62Bb5e47867CfbAe2ad89be325Df1b2",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "20000",
    "amountUsd": 0.02,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "available_transcripts": {
          "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.",
          "items": {
            "properties": {
              "language_code": {
                "type": "string"
              },
              "selected": {
                "description": "True on the track this response served",
                "type": "boolean"
              },
              "title": {
                "description": "Track title, on videos with named tracks",
                "type": "string"
              },
              "type": {
                "description": "asr on auto-generated tracks; absent on authored ones",
                "type": "string"
              }
            },
            "type": "object"
          },
          "type": "array"
        },
        "chapters": {
          "description": "Chapter markers; empty for videos without chapters",
          "items": {
            "properties": {
              "end_ms": {
                "type": "integer"
              },
              "start_ms": {
                "type": "integer"
              },
              "start_time_text": {
                "type": "string"
              },
              "title": {
                "type": "string"
              }
            },
            "type": "object"
          },
          "type": "array"
        },
        "language_code": {
          "description": "Language of the track actually served; omitted when the upstream identifies none — never an echo of the request",
          "type": "string"
        },
        "note": {
          "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.",
          "type": "string"
        },
        "queried_at": {
          "format": "date-time",
          "type": "string"
        },
        "segments": {
          "items": {
            "properties": {
              "end_ms": {
                "description": "Line end offset in milliseconds; absent on tracks that carry only starts",
                "type": "integer"
              },
              "start_ms": {
                "description": "Line start offset in milliseconds",
                "type": "integer"
              },
              "start_time_text": {
                "description": "Line start as displayed, e.g. 0:43",
                "type": "string"
              },
              "text": {
                "type": "string"
              }
            },
            "required": [
              "start_ms",
              "text"
            ],
            "type": "object"
          },
          "type": "array"
        },
        "text": {
          "description": "Whole transcript as one plain-text block",
          "type": "string"
        },
        "video_id": {
          "description": "Normalized 11-character video id",
          "type": "string"
        }
      },
      "required": [
        "video_id",
        "queried_at",
        "text",
        "segments",
        "chapters",
        "available_transcripts"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "available_transcripts": [
      {
        "language_code": "string",
        "selected": true,
        "title": "string",
        "type": "string"
      }
    ],
    "chapters": [
      {
        "end_ms": 0,
        "start_ms": 0,
        "start_time_text": "string",
        "title": "string"
      }
    ],
    "language_code": "string",
    "note": "string",
    "queried_at": "2026-01-01T00:00:00Z",
    "segments": [
      {
        "end_ms": 0,
        "start_ms": 0,
        "start_time_text": "string",
        "text": "string"
      }
    ],
    "text": "string",
    "video_id": "string"
  },
  "type": "string"
}

Examples

curl

curl "https://youtube.use.x402atlas.com/transcript"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://youtube.use.x402atlas.com/transcript");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://youtube.use.x402atlas.com/transcript")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: youtube.use.x402atlas.com
Endpoint: https://youtube.use.x402atlas.com/transcript
Machine-readable: /resources/27175.json