Skills & on-demand context
The idea: A skill is expertise on a shelf: only its one-line description stays in context until it's relevant, then its full instructions load — progressive disclosure. MCP adds tools the same just-in-time way.
What you'll be able to do: You can explain skills and progressive disclosure: more capability without a permanent context cost.
The problem it solves: If every instruction lived in the prompt forever, the window would overflow. How does it handle rarely-needed know-how?
Builds on: What's in the context window
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