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.
Postproxy Blog
Engineering notes, product updates, and automation playbooks from Postproxy.
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: 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.
Partial Success in Social Media Publishing
Why multi-platform publishing rarely succeeds everywhere at once — and why systems must be built for that.
When Postproxy Beats Social Media Tools
Why infrastructure-based publishing wins over tools like Hootsuite and Buffer in automated workflows.
Human-in-the-loop is a state, not a fallback
Why human involvement should be modeled as an explicit state in automated publishing systems, not bolted on as a fallback when something goes wrong at the last moment.