R.001 / TechnologySOCIAL
§ Tech.00
Mixpost — The social media pipeline
Open-source social media scheduling for 30+ platforms including Instagram, TikTok, LinkedIn, X, Facebook, YouTube, Reddit, Threads, and Bluesky. n8n can trigger Mixpost via API — enabling fully automated content pipelines without touching the keyboard.
30+
platforms supported
AGPL-3.0
v2.11.3 self-hostable
MCP support
agent-driven posting
§ Tech.01Replaces
What it replaces
| SaaS | Monthly cost | Limitation |
|---|---|---|
| Buffer | £5/channel/mo | Charges per channel — costs compound |
| Hootsuite | £49–£739/mo | Expensive for SMB use |
| Later | £18–£80/mo | Instagram-focused, limited platforms |
| Sprout Social | £249+/mo | Enterprise pricing for SMB needs |
With Mixpost, the only recurring cost is the server it runs on — shared across your whole stack.
§ Tech.02Pipeline
How STACKD uses it
- New case study published in Payload CMS → n8n trigger → LangGraph generates 3 social variants → Mixpost schedules across LinkedIn, Instagram, X at optimal times
- AI auto-complete for captions, Canva-like visual editor, team collaboration, per-platform analytics — all in one tool
- MCP (Model Context Protocol) support: AI agents can post directly via Mixpost without human intervention
§ Tech.03Business case
Business outcomes
Wellness & salons
New lookbook photos in Payload auto-scheduled to Instagram and Facebook
Posting consistency maintained without dedicated social staff
Hospitality
New availability window triggers promotional posts across 4 platforms automatically
Direct booking enquiries up 28% vs previous manual posting
Professional services
Review received → drafted response and shareable post generated automatically via n8n + LangGraph
Every review responded to within 2 hours