Automatic Instagram content creation with OpenAI, Nano Banana and Telegram check

|Overview |Sample| |-|-| |This template is the first of its kind: it automatically generates both the caption and the image for your Instagram posts by analysing your existing feed, with zero spreadsheets or manual steps. Once configured, the workflow runs on a schedule, fetches your past posts, and uses a custom AI agent to craft a new caption and image prompt. Then creates the image via OpenRouter (Nano Banana) and stores everything in Airtable. A Telegram message gives you one‑tap control to confirm, regenerate or cancel; if confirmed, the post is published directly to Instagram. Perfect for creators and marketers who want fresh, on‑brand content without daily manual effort. | !Preview| --- Good to Know - Fully hands‑off: No need to prepare datasets or manually upload assets. The workflow reads your Instagram history via the Graph API and generate new content. - AI‑powered creativity: Uses OpenAI for caption generation and Nano Banana via OpenRouter for image synthesis. - Privacy‑friendly: Your content stays within your Airtable and n8n instance; only the AI models receive anonymised prompts. - Nano Banana: Currently the gemini-2.5-flash-image-preview model is used but you can use any available in Open Route. --- How It Works 1. Scheduling: A schedule trigger initiates the workflow at your chosen time. 2. Feed Analysis: The workflow uses your Instagram business account ID and access token to fetch past posts. 3. AI Content Generation: A custom AI agent analyses your captions, applies category tag, and writes a new caption and a detailed image prompt. If there is no content it will be based on the category to create something new. 4. Image Creation: The prompt is sent to the Nano Banana model on OpenRouter to generate a new image. The binary is converted to JPEG and stored in Airtable wih the caption and prompt. 5. Approval via Telegram: A Telegram bot sends you the generated image, caption and three inline buttons: Confirm, Regenerate and Cancel. - ✅ Confirm: Uploads the image to Instagram via a Graph API call. - ♻️ Regenerate: Re‑runs just the AI ​​creation steps, generating a different title and image. - ❌ Cancel: Updates the Telegram message to note the cancellation and removes the buttons. 6. Publishing: When confirmed, the workflow uses the image’s public URL (generated in Airtable and served via an n8n webhook) to create and publish the post on Instagram. --- How to Use 1. Prepare your accounts: - Instagram Business Account connected to a Facebook Page (get your IG Business ID and a long‑lived Graph API access token). - Airtable base and table with fields: id, imgprompt, caption, databinary, action, mimetype, createdat. - Personal access token for Airtable, Telegram bot token and chat ID, OpenAI and OpenRouter API keys. 2. Create workflows: Four workflows are included: schedule trigger, webhook to serve the image, main content‑generation workflow and Telegram response workflow. 3. Replace placeholders: Fill in your account IDs, token values, n8n instance URL and webhook paths. 4. Define Category: Adjust the Define Category node to steer the content theme (e.g. natural landscapes, urban fashion). 5. Activate and test: - Activate the workflows "ebhook to serve the image and Telegram response workflow. - Configure Schedule Trigger workflow to call the Main Content-Generation Workflow. - Run the Main Content-Generation Workflow once to create a sample post and test the Telegram buttons. - Activate the schedule for the generation of automatic posts. --- Requirements - Instagram Business account & Facebook Graph API (tokens with instagrambasic and instagramcontentpublish permissions) - Airtable base & personal access token - Telegram bot (token & chat ID) - OpenAI API key - OpenRouter API key --- Customization - Caption tone: Modify the AI Agent prompt to change tone (flirtatious, motivational, mysterious). - Schedule: Set your preferred posting time via the schedule trigger. - Additional fields: Expand the Airtable schema