{
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    "title": "YouTube RAG Corpus — Videos, Playlists & Channels",
    "description": "YouTube transcript API for RAG and MCP agents (Claude, Cursor, ChatGPT). Videos, playlists, and channels → timestamped caption chunks with deep links for vector DBs and LLM citations.",
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  "components": {
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        "type": "object",
        "required": [
          "startUrls"
        ],
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            "title": "YouTube sources",
            "minItems": 1,
            "type": "array",
            "description": "YouTube sources for the RAG corpus: watch URLs, video IDs, playlist URLs, channel URLs, or @handles (e.g. @mkbhd). Mix allowed. AI agents: pass every YouTube link the user wants transcribed here.",
            "items": {
              "type": "string"
            }
          },
          "maxVideos": {
            "title": "Max videos",
            "minimum": 1,
            "maximum": 2000,
            "type": "integer",
            "description": "Safety cap after expanding playlists/channels (1–2000). Agents should start low (10–50) unless the user asks for a full channel.",
            "default": 50
          },
          "onlyNewVideos": {
            "title": "Only new videos (scheduled runs)",
            "type": "boolean",
            "description": "Skip videos already delivered for the same channel/playlist. State is stored in your account key-value store \"rag-youtube-transcript-state\". Ideal with an Apify Schedule.",
            "default": false
          },
          "languages": {
            "title": "Language preference",
            "type": "array",
            "description": "Preferred caption languages in order (e.g. en, es). Matches en ↔ en-US. Falls back to English, then any available track.",
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              "en"
            ],
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              "type": "string"
            }
          },
          "preferOfficialCaptions": {
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            "type": "boolean",
            "description": "When true, human-authored tracks are preferred over ASR (auto) tracks for the same language.",
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          },
          "maxCharsPerChunk": {
            "title": "Max characters per RAG chunk",
            "minimum": 200,
            "maximum": 8000,
            "type": "integer",
            "description": "Chunk size for embeddings / RAG. Chunks always split on caption segment boundaries and include deepLink + chunkId.",
            "default": 1200
          },
          "includeSegments": {
            "title": "Include raw caption segments",
            "type": "boolean",
            "description": "Include the full {text, startSec, endSec} segment array per video (larger payloads).",
            "default": false
          },
          "includeSrt": {
            "title": "Include SRT",
            "type": "boolean",
            "description": "Include a SubRip (.srt) subtitle string per video.",
            "default": false
          },
          "includeVtt": {
            "title": "Include VTT",
            "type": "boolean",
            "description": "Include a WebVTT (.vtt) subtitle string per video.",
            "default": false
          },
          "maxConcurrency": {
            "title": "Max concurrent videos",
            "minimum": 1,
            "maximum": 20,
            "type": "integer",
            "description": "How many videos to process in parallel. Billing is serialized.",
            "default": 5
          },
          "proxyConfiguration": {
            "title": "Proxy configuration",
            "type": "object",
            "description": "Defaults to Apify Proxy RESIDENTIAL. Datacenter proxies often fail YouTube bot checks (empty results). Keep residential for reliable captions.",
            "default": {
              "useApifyProxy": true,
              "apifyProxyGroups": [
                "RESIDENTIAL"
              ]
            }
          }
        }
      },
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            "type": "object",
            "properties": {
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                "type": "string"
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                "type": "string"
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                }
              },
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                  "timeoutSecs": {
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                  },
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