In this video I walk through and run the Voice AI Web App. Chat (n8n LLM with Grok tts) – Create (n8n flow with Qwen3/ Grok) – Auto-post to 6 socials; for cheap.
W57TH Social Posting Engine: an n8n workflow that takes a topic brief (via self-hosted Voice App) and create text / hashtags/ @mention/ video. Post to Instagram, Facebook, LinkedIn, YouTube, TikTok, and X — via n8n.
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WHAT’S COVERED
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▸ Dual triggers — Web hosted (Cloudflare) intake agent, Grok test-to-speach.
▸ Content Factory — Grok 4 Fast researches topic via Serper, outputs platform-native copy for all 6 socials as structured JSON
▸ fal.ai FLUX image generation + Hailuo 02 Fast for 20 second 540p shorts video; with music, voice over, overlay text, intro, watermark
▸ Native n8n nodes for Instagram, Facebook, LinkedIn, YouTube
▸ TikTok via Playwright browser automation (API is fully blocked — this is the workaround)
▸ X / Twitter via GetXapi (low rate limit — explained) $0.0002/ run.
▸ Full notification system to Whatsapp, email.
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LIVE RUN
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We submit a real brief and watch it post live across all 6 platforms — including the TikTok Playwright session and the LinkedIn video chain.
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TOOLS & SERVICES USED
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• n8n (self-hosted)
• Grok 4 Fast, Llama 4 Scout, Qwen 3 14b.
• FFmpeg auto video editing
• fal.ai — image and video gen.
• rebrowser-playwright — TikTok automation
• GetXapi — X / Twitter posting
• Gmail · WhatsApp — status reporting
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WHO THIS IS FOR
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Do it yourselfers for AI automation on a budget.