tiktok_get_subtitle

Instructions

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "tiktok_url": "<tiktok_url>"
    },
    "name": "tiktok_get_subtitle"
  }
}

Implementation Reference

• index.ts:187-210 (handler)

  The performGetSubtitle function is the core handler that calls the TikNeuron API to fetch the subtitle content for a TikTok video. It takes tiktok_url and optional language_code, sends a fetch request to https://tikneuron.com/api/mcp/get-subtitles, and returns the subtitle_content.

  async function performGetSubtitle(tiktok_url: string, language_code: string) {
      const url = new URL('https://tikneuron.com/api/mcp/get-subtitles');
      url.searchParams.set('tiktok_url', tiktok_url);
  
      if (language_code){
          url.searchParams.set('language_code', language_code);
      }
  
      const response = await fetch(url, {
          headers: {
              'Accept': 'application/json',
              'Accept-Encoding': 'gzip',
              'MCP-API-KEY': TIKNEURON_MCP_API_KEY,
          }
      });
  
      if (!response.ok) {
          throw new Error(`TikNeuron API error: ${response.status} ${response.statusText}\n${await response.text()}`);
      }
  
      const data = await response.json() as Subtitle;
  
      return data.subtitle_content || 'No subtitle available';
  }

• index.ts:32-54 (schema)

  The GET_SUBTITLE Tool definition providing name 'tiktok_get_subtitle', description, and inputSchema which requires tiktok_url (string) and optionally language_code (string).

  const GET_SUBTITLE: Tool = {
      name: "tiktok_get_subtitle",
      description:
          "Get the subtitle (content) for a TikTok video url." +
          "This is used for getting the subtitle, content or context for a TikTok video." +
          "Supports TikTok video url as input and optionally language code from tool 'AVAILABLE_SUBTITLES'" +
          "Returns the subtitle for the video in the requested language and format." +
          "If no language code is provided, the tool will return the subtitle of automatic speech recognition.",
      inputSchema: {
          type: "object",
          properties: {
              tiktok_url: {
                  type: "string",
                  description: "TikTok video URL, e.g., https://www.tiktok.com/@username/video/1234567890 or https://vm.tiktok.com/1234567890",
              },
              language_code: {
                  type: "string",
                  description: "Language code for the subtitle, e.g., en for English, es for Spanish, fr for French, etc.",
              },
          },
          required: ["tiktok_url"]
      }
  };

• index.ts:144-151 (schema)

  The isGetSubtitleArgs type guard function validates that the input arguments match the expected shape (object with tiktok_url string).

  function isGetSubtitleArgs(args: unknown): args is { tiktok_url: string, language_code: string } {
      return (
          typeof args === "object" &&
          args !== null &&
          "tiktok_url" in args &&
          typeof (args as { tiktok_url: string }).tiktok_url === "string"
      );
  }

• index.ts:109-116 (schema)

  The Subtitle interface defines the response shape from the API, including subtitle_content field which holds the actual subtitle text.

  interface Subtitle {
      success?: boolean;
      subtitles?: Array<{
          language?: string;
          source?: string;
      }>;
      subtitle_content?: string;
  }

• index.ts:249-251 (registration)

  Registration of the tool in the ListToolsRequestSchema handler, adding GET_SUBTITLE to the list of available tools.

  server.setRequestHandler(ListToolsRequestSchema, async () => ({
      tools: [AVAILABLE_SUBTITLES, GET_SUBTITLE, GET_POST_DETAILS],
  }));

• index.ts:276-287 (registration)

  The case handler in the CallToolRequestSchema switch statement that dispatches to performGetSubtitle when the tool name is 'tiktok_get_subtitle'.

  case "tiktok_get_subtitle": {
      if (!isGetSubtitleArgs(args)) {
          throw new Error("Invalid arguments for tiktok_get_subtitle");
      }
      const { tiktok_url, language_code } = args;
  
      const results = await performGetSubtitle(tiktok_url, language_code);
      return {
          content: [{ type: "text", text: results }],
          isError: false,
      };
  }