Comment by 9dev

Aside from that, MCPs also allow connecting an external platform without a runtime environment. Every time this topic comes up, engineers act like Claude Code was the only application for AI agents, while there's tons of use cases in other verticals aside from coding. The harness is not running on a local machine, but rather an isolated and restricted container in some cloud deployment, where running arbitrary code would be a big nope. But you still want customers to be able to connect their existing tools to your agent.

MCP is the perfect answer for this - it gives an agent a connector with built-in authentication to all kinds of additional tooling. Skills just don't qualify here at all.