Write Markdown Once, Publish It Everywhere: dev.to, Medium, AWS Builder Center and LinkedIn

Publishing technical content across multiple platforms is often fraught with inconsistencies, as each site handles Markdown, code blocks, and images differently. To solve this, the 'publishing-kit' project introduces an agent-based workflow that automates the transformation of a single source Markdown file into platform-specific formats. By utilizing a combination of REST APIs for dev.to and browser automation for Medium, AWS Builder Center, and LinkedIn, the tool ensures that content renders correctly on every destination. The kit includes pre-flight checks to validate links, front matter, and image sizes before publication, preventing common errors like broken tables or misaligned covers. This approach allows developers to maintain a single source of truth while ensuring their articles appear professional across diverse ecosystems, effectively bridging the gap between platforms that lack robust publishing APIs and those that support automated workflows.