Full transcript of any YouTube video by video id or URL

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.

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://youtube.use.x402atlas.com/transcript

Our checks, last 30 days

Example input (from the provider)

{
  "method": "GET",
  "queryParams": {
    "v": "iG9CE55wbtY"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "v": {
              "description": "YouTube video id (11 characters) or a full YouTube video URL",
              "maxLength": 500,
              "type": "string"
            }
          },
          "required": [
            "v"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "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 \u2014 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 \u2014 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"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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