2026
4 posts
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No shelfSSH never sends your key. It sends a signature only your key could make.
How SSH key login really works: key pairs, signatures, authorized_keys, host keys, the handshake, and the rules that decide who gets in.
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No shelfClaude Mods
What mods can do inside Claude Code: where they draw, what we proved in a live session, and the ideas worth building.
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No shelfPrompt Cache Explained
How Claude's prompt cache works, step by step: what gets cached, when it expires, and what rewind, branch and fork do to it.
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aiClaude doesn't remember your chat. It remembers how your prompt starts.
The Anthropic API keeps no session: every request sends the whole prompt again. The prompt cache recognizes how a prompt starts and skips processing it again. How it works, one step at a time.