Carousel Posts via API: Instagram, LinkedIn
How to publish carousel posts via API across Instagram, LinkedIn, and Threads — each platform's container model and how to normalize them in one workflow.
Postproxy Blog
Engineering notes, product updates, and automation playbooks from Postproxy.
Reels vs TikTok vs Shorts: Publishing APIs
Instagram Reels vs TikTok vs YouTube Shorts API comparison — aspect ratios, duration limits, thumbnail handling, and publishing requirements for each platform.
OAuth Flows for Social Platforms Compared
Side-by-side breakdown of OAuth implementations across all ten platforms — token lifetimes, refresh mechanics, required scopes, and common pitfalls.
Cross-Posting to Social Networks via API
How to publish the same content to X, Instagram, Facebook, LinkedIn, Threads, TikTok, and YouTube through their APIs — and what makes it harder than it looks.
Image & Video Uploads Across Social APIs
How each social media platform handles media uploads differently — chunked, container, resumable, pull-from-URL — and what it takes to support all of them.
X (Twitter) API Posting: 2026 Integration Guide
Understanding OAuth authentication, the chunked media upload flow, and API endpoints for posting to X.
Facebook API Posting: Integration Guide
Understanding permissions, app review, video uploads, and API endpoints for Facebook Page publishing.
Publish-first workflows
Why automation should finish with publishing instead of stopping right before it, and how publish-first workflows close the gap between drafting and going live.
Remote MCP: Publishing for Traveling Agents
Why we built a remote MCP server for Postproxy, and how it changes what AI agents can do without infrastructure overhead.
Better control before you publish
How reworked post creation, drafts, and review flows give you better control before you publish, making automated social media publishing easier to check and trust.
What you get when publishing stops being manual
What changes when social media publishing stops being manual — how automating the last step improves reliability and focus, and frees your time for work that matters.
Retries are a policy, not a feature
Why retrying a failed publishing request is a product decision, not a technical toggle — and how deciding when, what, and how often to retry shapes reliable automation.