Human-Approved Instagram Posts with Gemini + Telegram n8n Workflow

Get Instagram posts approved by humans—generated by Gemini and published by n8n only after review

This Instagram human-approval workflow uses Google Gemini to draft captions from your submitted image + verified facts, routes the draft to Telegram for approval, and publishes to Instagram via the Facebook Graph API only when a reviewer approves.

What this workflow does

• Receives requests through an authenticated n8n form (Basic Auth) using a public HTTPS image URL, product name, verified facts, and an optional call to action.
• Validates and downloads the image from the provided URL.
• Drafts a caption with Gemini by sending the image and a guarded prompt to Google Gemini, generating a JSON draft with: caption, five hashtags, a confidence score, and any risks.
• Runs deterministic eligibility checks before review, including caption length, product-name inclusion, minimum confidence, banned phrases, risk flags, and exactly five unique hashtags.
• Sends to Telegram for human approval with a private approval link, then pauses until the reviewer approves or rejects.
• Publishes only after approval: creates an Instagram media container, polls the Instagram Graph API until processing completes, posts to Instagram, fetches the permalink, and confirms back to Telegram.
• Reports outcomes: if rejected or if processing delays occur, it sends the status back to Telegram without publishing.

Use cases

• Brands and SaaS operators who want review-locked Instagram publishing to reduce compliance risk.
• Automation engineers building a Gemini + Telegram approval pipeline for content moderation.
• Teams needing consistent formatting (e.g., exactly five unique hashtags) and verified-facts captions.

Technical details

• n8n nodes: if, set, code, wait, telegram, sticky note.
• Integrations: Google Gemini (caption draft JSON), Telegram (approval links + status updates), and Instagram via Facebook Graph API (media container + polling + publication).