Social media content calendar AI agent
Plans a week of posts in Arabic and English from your brand guide, checks what's trending, and saves them to your content calendar.
How it works
Trigger: Chat — you message the agent
- You ask for "next week's posts for Instagram and LinkedIn".
- The agent reads your brand guide and the posts you already planned.
- It checks upcoming occasions and trends with a web search.
- It drafts the posts and, after you approve, saves them to your Content Calendar sheet.
What it can do
Unlike a fixed flow, an agent decides which of its tools to use, in what order — and remembers the conversation.
- Writes in your brand voice, in Arabic, English or both
- Avoids repeating topics you already posted
- Plans around occasions like Ramadan, Eid, White Friday and national days
- Saves each post with date, platform, caption and image idea
System prompt
The instructions that shape the agent. It's already inside the n8n template — copy it into Make or Zapier, and adjust the YOUR_… parts.
You are the social media planner for YOUR_BRAND. Today is {{ $now.toFormat('cccc d LLLL yyyy') }}.
Tools:
- "Brand guide": our products, audience, tone of voice, words to avoid, and the platforms we post on. Read it first, every time.
- "Planned posts": posts already in our content calendar. Check it so you don't repeat topics or dates.
- "Search the web": use it to check upcoming occasions and trends for our audience in YOUR_COUNTRY (Ramadan, Eid, White Friday, national days, school season).
- "Save post": saves one post to the calendar. Use it only after the user approves the drafts.
When the user asks for posts:
1. Ask which platforms and which week, if they haven't said.
2. Draft the posts: date, platform, caption (in Arabic, English or both, as the brand guide says), and an image idea.
3. Show the drafts and ask for changes. Save only the posts the user approves, one "Save post" call each.
Rules:
- Never invent prices, offers, product features or results. Use only what's in the brand guide, or put [brackets] for the user to fill in.
- Keep religious and national occasions respectful; no jokes about them.
- Vary the formats: product, behind the scenes, tips, customer stories, questions.Safety rules
Built into the prompt and the tools:
- Never saves posts until you approve them
- Never invents prices, offers or product claims; uses only your brand guide
- Keeps religious and national occasions respectful
Uses your own AI key (Claude, OpenAI or another model). Cost depends on the model and conversation length — a small, fast model keeps most conversations to a fraction of a cent.
Diagram
Trigger AI Agent tool
Build it
Pick your tool — same automation, step by step.
Copy and paste straight into an n8n canvas (Ctrl+V), or download and use Import from File. Then connect your own credentials and replace every YOUR_… placeholder. AI steps use a Claude model node — swap it for OpenAI, Gemini or Ollama if you prefer.
Show code (276 lines)
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"content": "## Social media content calendar AI agent\nPlans a week of posts in Arabic and English from your brand guide, checks what's trending, and saves them to your content calendar.\n\n**Setup**\n1. Open each node and connect your own credentials.\n2. Replace every YOUR_… placeholder.\n3. Test once, then activate.\n\nFree template from Flowngn",
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"topic": "={{ $fromAI('topic', \"Short topic\", 'string') }}",
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}In Make, create a new scenario and add these modules in order:
- Webhooks › Custom webhook — called by your website's chat widget
- Make AI Agents › Run an agent — give it these tools: “Brand guide” (Google Sheets), “Planned posts” (Google Sheets), “Search the web” (SerpApi), “Save post” (Google Sheets); paste the system prompt as the agent's instructions
- Every module run uses Make operations — the free plan includes a monthly quota.
- Module and step names can differ slightly as Make and Zapier update their apps.
In Zapier, create a new Zap and add these steps in order:
- Zapier Chatbots, or Webhooks by Zapier — Catch Hook from your chat widget
- Zapier Agents — create an agent (or AI by Zapier for a single step) — give it these tools: “Brand guide” (Google Sheets), “Planned posts” (Google Sheets), “Search the web” (SerpApi), “Save post” (Google Sheets); paste the system prompt as the agent's instructions
- Zaps with more than two steps need a paid Zapier plan.
- Module and step names can differ slightly as Make and Zapier update their apps.
Tips
- Fill the Brand sheet well: products, audience, tone and words to avoid. It makes the biggest difference.
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