|
| 1 | +import { openai } from "@ai-sdk/openai"; |
| 2 | +import { |
| 3 | + Agent, |
| 4 | + MCPConfiguration, |
| 5 | + Memory, |
| 6 | + VoltAgent, |
| 7 | + VoltAgentObservability, |
| 8 | +} from "@voltagent/core"; |
| 9 | +import { LibSQLMemoryAdapter, LibSQLObservabilityAdapter } from "@voltagent/libsql"; |
| 10 | +import { createPinoLogger } from "@voltagent/logger"; |
| 11 | +import { honoServer } from "@voltagent/server-hono"; |
| 12 | + |
| 13 | +// Create logger |
| 14 | +const logger = createPinoLogger({ |
| 15 | + name: "youtube-to-blog", |
| 16 | + level: "info", |
| 17 | +}); |
| 18 | + |
| 19 | +// Create Memory instance with vector support for semantic search and working memory |
| 20 | +const memory = new Memory({ |
| 21 | + storage: new LibSQLMemoryAdapter({ |
| 22 | + storageLimit: 100, // Keep last 100 messages per conversation |
| 23 | + }), |
| 24 | +}); |
| 25 | + |
| 26 | +// Configure YouTube MCP with SSE transport |
| 27 | +(async () => { |
| 28 | + const youtubeMcpConfig = new MCPConfiguration({ |
| 29 | + servers: { |
| 30 | + youtube: { |
| 31 | + type: "http", |
| 32 | + url: process.env.YOUTUBE_MCP_URL || "", |
| 33 | + }, |
| 34 | + }, |
| 35 | + }); |
| 36 | + |
| 37 | + // Get YouTube MCP tools |
| 38 | + const youtubeTools = await youtubeMcpConfig.getTools(); |
| 39 | + |
| 40 | + // Create TranscriptFetcher subagent |
| 41 | + const transcriptFetcherAgent = new Agent({ |
| 42 | + name: "TranscriptFetcher", |
| 43 | + instructions: `You are a transcript fetcher. Your ONLY job is to fetch transcripts from YouTube videos. |
| 44 | +
|
| 45 | +IMPORTANT: |
| 46 | +- When given a YouTube URL, use your tools to extract the English transcript |
| 47 | +- Return ONLY the raw transcript text |
| 48 | +- DO NOT write blog posts |
| 49 | +- DO NOT format the transcript into articles |
| 50 | +- DO NOT add any additional content or commentary |
| 51 | +- Just extract and return the transcript as-is`, |
| 52 | + model: openai("gpt-4o-mini"), |
| 53 | + tools: youtubeTools, |
| 54 | + memory, |
| 55 | + }); |
| 56 | + |
| 57 | + // Create BlogWriter subagent |
| 58 | + const blogWriterAgent = new Agent({ |
| 59 | + name: "BlogWriter", |
| 60 | + instructions: `You are an expert blog writer. When given a YouTube transcript, convert it into a well-structured, engaging blog post with: |
| 61 | +- A catchy, SEO-friendly title |
| 62 | +- An engaging introduction |
| 63 | +- Clear sections with subheadings |
| 64 | +- Key points and takeaways |
| 65 | +- A compelling conclusion |
| 66 | +Format the output in Markdown.`, |
| 67 | + model: openai("gpt-4o-mini"), |
| 68 | + memory, |
| 69 | + }); |
| 70 | + |
| 71 | + // Create Coordinator supervisor agent |
| 72 | + const coordinatorAgent = new Agent({ |
| 73 | + name: "YouTubeToBlogCoordinator", |
| 74 | + instructions: `You are a coordinator that orchestrates the process of converting YouTube videos to blog posts. You DO NOT write the blog post yourself - that is the BlogWriter's job. |
| 75 | +
|
| 76 | +IMPORTANT: You MUST follow these steps in EXACT ORDER: |
| 77 | +
|
| 78 | +STEP 1: Get the Transcript |
| 79 | +- Delegate to the TranscriptFetcher agent with the YouTube URL |
| 80 | +- WAIT for the TranscriptFetcher to complete and return the full transcript |
| 81 | +- DO NOT proceed to Step 2 until you have the complete transcript |
| 82 | +
|
| 83 | +STEP 2: Generate the Blog Post |
| 84 | +- After you have the COMPLETE transcript, delegate to the BlogWriter agent |
| 85 | +- Pass the ENTIRE transcript to the BlogWriter |
| 86 | +- DO NOT write the blog post yourself - let the BlogWriter do it |
| 87 | +- WAIT for the BlogWriter to return the complete blog post |
| 88 | +
|
| 89 | +STEP 3: Return ONLY the Blog Post |
| 90 | +- Return ONLY the blog post content that the BlogWriter created |
| 91 | +- DO NOT add any additional commentary, explanations, or meta-information |
| 92 | +- Just return the blog post as-is |
| 93 | +
|
| 94 | +CRITICAL RULES: |
| 95 | +- Complete Step 1 entirely before starting Step 2 |
| 96 | +- You are ONLY a coordinator - BlogWriter creates the blog post, NOT you |
| 97 | +- Your final response should be ONLY the blog post content from BlogWriter`, |
| 98 | + model: openai("gpt-4o-mini"), |
| 99 | + memory, |
| 100 | + subAgents: [transcriptFetcherAgent, blogWriterAgent], |
| 101 | + supervisorConfig: { |
| 102 | + fullStreamEventForwarding: { |
| 103 | + types: ["tool-call", "tool-result"], |
| 104 | + }, |
| 105 | + }, |
| 106 | + }); |
| 107 | + |
| 108 | + new VoltAgent({ |
| 109 | + agents: { |
| 110 | + coordinatorAgent, |
| 111 | + transcriptFetcherAgent, |
| 112 | + blogWriterAgent, |
| 113 | + }, |
| 114 | + server: honoServer(), |
| 115 | + logger, |
| 116 | + observability: new VoltAgentObservability({ |
| 117 | + storage: new LibSQLObservabilityAdapter(), |
| 118 | + }), |
| 119 | + }); |
| 120 | +})(); // IGNORE |
0 commit comments