I recently built a content syndication plugin for EmDash that automatically distributes blog posts to Dev.to, LinkedIn, Medium, Hacker News, and email newsletters from a single publish action. Here's how the architecture works and what I learned about multi-platform API orchestration.

The Problem: Format Fragmentation and Timing Drift

Manual cross-posting breaks down in practice because each platform expects different formats and has different constraints:

Format fragmentation — HTML on your site, Markdown on Dev.to, rich text on LinkedIn, plain text for HN, HTML for email

Timing drift — manual workflows slip by days or weeks, defeating the purpose of coordinated launches