Publish a single image post (public image_url + caption) via the 2-step flow. (docs)
POST /{ig-user-id}/media then POST /{ig-user-id}/media_publish
🔴 high
✅ yes
Connecting it
You provide: Long-lived Meta access token + IG business account id
Where to get it: developers.facebook.com → create app → add Instagram Graph API → link an IG Business/Creator account to a Facebook Page → complete App Review + Business Verification → generate a long-lived token (instagram_basic, instagram_content_publish, pages_read_engagement).