YouTube Transcript Extractor MCP

Instructions

Implementation Reference

• index.ts:20-35 (handler)

  Handler function that extracts the transcript from a YouTube video by parsing the video ID from the input URL, fetching the transcript using YoutubeTranscript, joining the text parts, and returning it as text content.

  async ({ input }) => {
    const videoData = getVideoId(input);
    const output = await YoutubeTranscript.fetchTranscript(videoData.id as string).then((transcript: any) => {
      const text = transcript.map((t: any) => t.text).join(' ');
      return text;
    });
  
    return {
      content: [
        {
          type: "text",
          text: output,
        },
      ],
    };
  }

• index.ts:17-19 (schema)

  Zod schema defining the input as a string representing a YouTube video URL.

  {
    input: z.string().describe("a youtube video url"),
  },

• index.ts:14-36 (registration)

  Registers the 'youtube-transcript-extractor' tool with the MCP server, including name, description, input schema, and handler function.

  server.tool(
    "youtube-transcript-extractor",
    "Extracts the transcript of a YouTube video.",
    {
      input: z.string().describe("a youtube video url"),
    },
    async ({ input }) => {
      const videoData = getVideoId(input);
      const output = await YoutubeTranscript.fetchTranscript(videoData.id as string).then((transcript: any) => {
        const text = transcript.map((t: any) => t.text).join(' ');
        return text;
      });
  
      return {
        content: [
          {
            type: "text",
            text: output,
          },
        ],
      };
    }
  );