Quoting Sean Lynch

Sean Lynch argues that the Model Context Protocol's key advantage over skills and CLI is isolating authentication outside the agent's context window, potentially reducing MCP to a pure auth gateway for APIs.

The real valuable capability MCP offers over skills/CLI is isolating the auth flow outside of the agent’s context window, and potentially out of the harness completely. ... Maybe the idealized form of MCP is just an auth gateway for the API and nothing else. That’d still be a win. — Sean Lynch https://news.ycombinator.com/item?id=48592163 48593190 , comment on Hacker News Tags: model-context-protocol https://simonwillison.net/tags/model-context-protocol , llms https://simonwillison.net/tags/llms , ai https://simonwillison.net/tags/ai , generative-ai https://simonwillison.net/tags/generative-ai , skills https://simonwillison.net/tags/skills