format_transcript
Convert YouTube transcript data into text, JSON, or SRT formats for accessibility and integration needs.
Instructions
Format existing transcript data into different formats
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| transcript | Yes | Transcript data to format | |
| format | Yes | Output format | json |
Implementation Reference
- src/server/mcp-server.ts:304-319 (handler)MCP tool handler that validates input parameters and delegates formatting to the YouTubeTranscriptService.
private async handleFormatTranscript(args: any) { const { transcript, format } = args; if (!transcript || !format) { throw new McpError(ErrorCode.InvalidParams, 'transcript and format are required'); } const result = this.transcriptService.formatTranscript(transcript, format); return { content: [{ type: 'text', text: result }] }; } - Core implementation of the transcript formatting logic, supporting 'text', 'json', and 'srt' output formats.
public formatTranscript( transcript: TranscriptItem[], format: 'text' | 'json' | 'srt' ): string { switch (format) { case 'text': return transcript.map(item => item.text).join(' '); case 'json': return JSON.stringify(transcript, null, 2); case 'srt': return transcript.map((item, index) => { const start = this.secondsToSrtTime(item.start); const end = this.secondsToSrtTime(item.start + item.duration); return `${index + 1}\n${start} --> ${end}\n${item.text}\n`; }).join('\n'); default: return JSON.stringify(transcript, null, 2); } } - src/server/mcp-server.ts:178-205 (registration)Registration of the 'format_transcript' tool in the MCP server, including description and input schema.
{ name: 'format_transcript', description: 'Format existing transcript data into different formats', inputSchema: { type: 'object', properties: { transcript: { type: 'array', items: { type: 'object', properties: { text: { type: 'string' }, start: { type: 'number' }, duration: { type: 'number' } } }, description: 'Transcript data to format' }, format: { type: 'string', enum: ['text', 'json', 'srt'], description: 'Output format', default: 'json' } }, required: ['transcript', 'format'] } }, - src/server/mcp-server.ts:182-204 (schema)Input schema defining the parameters for the format_transcript tool: transcript array and format enum.
type: 'object', properties: { transcript: { type: 'array', items: { type: 'object', properties: { text: { type: 'string' }, start: { type: 'number' }, duration: { type: 'number' } } }, description: 'Transcript data to format' }, format: { type: 'string', enum: ['text', 'json', 'srt'], description: 'Output format', default: 'json' } }, required: ['transcript', 'format'] }