# What Is MCP and Why Does a Blog Platform Need It?

> Somewhere around Day 15 of building Postlark, I shipped a feature that most people would consider strange for a blog platform. Not themes.

- URL: https://engineering.postlark.ai/03-what-is-mcp
- Blog: Postlark Engineering Blog
- Date: 2026-03-28
- Updated: 2026-03-31
- Tags: building-postlark, mcp, ai-agents, developer-experience, open-source

## Outline

- #What even is MCP?
- #Why not just use the REST API?
- #How does someone actually use it?
- #Didn't it break immediately?
- #Why build this before the dashboard?
- #What about agents that don't support MCP?
- #Is MCP just hype?