Roundhouse AI

YouTube Metadata & Transcript

YouTube video data. Title, channel, description, view count, duration, keywords, thumbnails, and a best-effort caption transcript for any video — keyless.

MediaLiveeip155:8453Exactvia cdp
https://api.kadec0.xyz/v1/youtube
YoutubeVideoTranscriptMetadataCaptions
Calls · 30d
3→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 4 snapshots so far.
$149.51
Verified settled volume
A floor: summed over 5,000 of 6,654 verified settlements.
$0.030
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-27 07:34Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA

The 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.

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA",
      "amount": "30000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://api.kadec0.xyz/v1/youtube",
      "description": "YouTube video data. Title, channel, description, view count, duration, keywords, thumbnails, and a best-effort caption transcript for any video — keyless.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "url": {
              "type": "string",
              "description": "any youtube watch / youtu.be / shorts url"
            },
            "video_id": {
              "type": "string",
              "description": "11-char video id"
            },
            "transcript": {
              "type": "string",
              "default": "true",
              "description": "fetch caption transcript (best-effort)"
            }
          },
          "discoverable": true
        }
      },
      "maxAmountRequired": "30000",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://api.kadec0.xyz/v1/youtube",
    "tags": [
      "youtube",
      "video",
      "transcript",
      "metadata",
      "captions"
    ],
    "mimeType": "application/json",
    "description": "YouTube video data. Title, channel, description, view count, duration, keywords, thumbnails, and a best-effort caption transcript for any video — keyless.",
    "serviceName": "YouTube Metadata & Transcript"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "url": "https://www.youtube.com/watch?v=dQw4w9WgXcg"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "count": 1,
            "items": [
              {
                "type": "youtube_video",
                "title": "...",
                "channel": "...",
                "videoId": "dQw4w9WgXcg",
                "keywords": [
                  "..."
                ],
                "viewCount": 1600000000,
                "transcript": "...",
                "description": "...",
                "lengthSeconds": 213,
                "transcriptAvailable": true
              }
            ]
          }
        }
      },
      "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",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [],
                "properties": {
                  "url": {
                    "type": "string",
                    "description": "any youtube watch / youtu.be / shorts url"
                  },
                  "video_id": {
                    "type": "string",
                    "description": "11-char video id"
                  },
                  "transcript": {
                    "type": "string",
                    "default": "true",
                    "description": "fetch caption transcript (best-effort)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object"
              }
            }
          }
        }
      }
    }
  },
  "x402Version": 2,
  "paymentRequirements": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA",
      "amount": "30000",
      "scheme": "exact",
      "network": "eip155:8453",
      "mimeType": "application/json",
      "resource": "https://api.kadec0.xyz/v1/youtube",
      "description": "YouTube video data. Title, channel, description, view count, duration, keywords, thumbnails, and a best-effort caption transcript for any video — keyless.",
      "outputSchema": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "url": {
              "type": "string",
              "description": "any youtube watch / youtu.be / shorts url"
            },
            "video_id": {
              "type": "string",
              "description": "11-char video id"
            },
            "transcript": {
              "type": "string",
              "default": "true",
              "description": "fetch caption transcript (best-effort)"
            }
          },
          "discoverable": true
        }
      },
      "maxAmountRequired": "30000",
      "maxTimeoutSeconds": 300
    }
  ]
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

0.03USDC≈ $0.03 USD
on Base · exact scheme

Pay 0.03 USDC on Base to 0x4df6…AcDeA. The signed payment is good for 5 minutes.

Paid to
0x4df6…AcDeA
USD Coin contract
0x8335…02913
Payment window
5 minutes
As published
30000 smallest units
The catalog’s raw entry
[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x4df66B6c140778fe0717880A7c6dDE5Ea53AcDeA",
    "amount": "30000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 300
  }
]

Extensions

{
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "url": "https://www.youtube.com/watch?v=dQw4w9WgXcg"
        }
      },
      "output": {
        "type": "json",
        "example": {
          "count": 1,
          "items": [
            {
              "type": "youtube_video",
              "title": "...",
              "channel": "...",
              "videoId": "dQw4w9WgXcg",
              "keywords": [
                "..."
              ],
              "viewCount": 1600000000,
              "transcript": "...",
              "description": "...",
              "lengthSeconds": 213,
              "transcriptAvailable": true
            }
          ]
        }
      }
    },
    "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",
                "HEAD",
                "DELETE"
              ],
              "type": "string"
            },
            "queryParams": {
              "type": "object",
              "anyOf": [
                {
                  "required": [
                    "video_id"
                  ]
                },
                {
                  "required": [
                    "url"
                  ]
                }
              ],
              "required": [],
              "properties": {
                "url": {
                  "type": "string",
                  "description": "any youtube watch / youtu.be / shorts url"
                },
                "video_id": {
                  "type": "string",
                  "description": "11-char video id"
                },
                "transcript": {
                  "type": "string",
                  "default": "true",
                  "description": "fetch caption transcript (best-effort)"
                }
              }
            }
          },
          "additionalProperties": false
        },
        "output": {
          "type": "object",
          "required": [
            "type"
          ],
          "properties": {
            "type": {
              "type": "string"
            },
            "example": {
              "type": "object"
            }
          }
        }
      }
    }
  }
}

Provenance

Seen in the source catalog
2026-08-27 07:34Z
Last indexed by Roundhouse
2026-08-28 19:10Z
Last enriched (probe, favicon, geo)
2026-09-24 22:45Z
x402 version
2
Max timeout
300s
Liveness probe
HTTP 404
Report

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. 4 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.

Open skill.md
Show the prompt
Using Roundhouse, look up the x402 service YouTube Metadata & Transcript 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%20Metadata%20%26%20Transcript'
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://api.kadec0.xyz/v1/youtube, 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://roundhouseai.io/dashboard/team.

If you do not have Roundhouse tools or skills installed, read
https://roundhouseai.io/skill.md first — it is the whole procedure.