Auto-Publish Social Content from Google Sheets
Daily at 19:00, it reads pending posts from a Google Sheet, publishes them to Instagram, Facebook, and LinkedIn.
What it does
You get your daily social posts automatically published to Instagram, Facebook, and LinkedIn at 7 PM based on your Google Sheets calendar. The agent handles image and reel formats, adds hashtags, and updates your sheet with the results so you never miss a scheduled update.
Step by step
- Parse the Google Sheets row to extract the scheduled date, media URL, and caption text fields.
- Check if the current system date matches the scheduled date in the sheet to determine eligibility for posting.
- Format the HTTP POST request body according to Meta Graph API specifications for photo or video uploads.
Where the LLM does the work
- Generate engaging hashtags and refine the caption tone based on the raw content description provided in the sheet.
- Adapt the post format specifically for LinkedIn's professional audience while maintaining brand consistency with Instagram.
- Summarize any error messages from the API responses into human-readable status updates for the Google Sheets log.
Watch out for
Meta API requires specific image aspect ratios so validate media dimensions before uploading to prevent rejection errors.
LinkedIn access tokens expire quickly so implement a refresh token flow to avoid authentication failures during long runs.
Google Sheets has row limits for bulk updates so batch write operations only after all social posts succeed or fail individually.
Tools that fit
HTTP Request API Interact with Meta Graph API for Instagram/Facebook
Code LLM Process logic and payload preparation
The agent brief
Everything your agent needs, including the gotchas. Copy it and go.
You are helping me build the following AI agent workflow. ## Goal Auto-Publish Social Content from Google Sheets: Daily at 19:00, it reads pending posts from a Google Sheet, publishes them to Instagram, Facebook, and LinkedIn. ## Specification - What it does: You get your daily social posts automatically published to Instagram, Facebook, and LinkedIn at 7 PM based on your Google Sheets calendar. The agent handles image and reel formats, adds hashtags, and updates your sheet with the results so you never miss a scheduled update. - Trigger: On a schedule (Scheduled · daily 19:00) - Autonomy: Fully hands-off - Expected setup effort: about an afternoon - Tools/services involved: - Google Sheets: Read content calendar and update status - HTTP Request: Interact with Meta Graph API for Instagram/Facebook - LinkedIn: Publish posts to LinkedIn - Code: Process logic and payload preparation ## Known pitfalls, handle each one explicitly in your implementation 1. Meta API requires specific image aspect ratios so validate media dimensions before uploading to prevent rejection errors. 2. LinkedIn access tokens expire quickly so implement a refresh token flow to avoid authentication failures during long runs. 3. Google Sheets has row limits for bulk updates so batch write operations only after all social posts succeed or fail individually. ## Reference implementation https://n8n.io/workflows/16348 (workflow template) Fetch and inspect this before building. If it matches my stack, adapt it; if not, rebuild the pattern with my tools. ## Process requirements 1. Before building: ask me which of the listed tools I actually use and what my platform is (n8n / Make / code / other). Do not assume. 2. Adapt the pattern to my answers; do not force the reference stack. 3. Address every pitfall above; tell me how you handled each. 4. Provide a test plan I can run before letting this touch real data. 5. Ask before any step that sends messages, modifies data, or spends money. Source: https://usecasesforagents.com/use-case/auto-publish-social-content-from-google-sheets/ via usecasesforagents.com
Frequently asked questions
Can I use a different Spreadsheet than Google Sheets?
Yes. Google Sheets is only the example spreadsheet in this recipe. The same flow works with Airtable, Baserow and Excel. Swap the spreadsheet connection and keep the rest of the setup as written.
Want this running in your business?
This is what I do. I design and build AI agents like this one, and keep them running. If you want it set up for your team instead of doing it yourself, get in touch.
Who it's for
Built for marketers who'd rather brief an agent than start from a blank doc.