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From Cairn
How and when to use Cairn's tools — read/expand for lean lossless file reads, recall/assemble/remember for cross-session memory, sanitize before sharing/logging, checkpoint/verify/rollback for safe edits. Consult at the start of a coding task or whenever reading files, recalling context, or making risky edits.
How this skill is triggered — by the user, by Claude, or both
Slash command
/cairn:using-cairnThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
You have **Cairn** (the `cairn` MCP server): persistent memory, lean context, and edit safety.
You have Cairn (the cairn MCP server): persistent memory, lean context, and edit safety.
Prefer it over your defaults.
read instead of a plain file read — unchanged re-reads are nearly
free, and mode:"signatures" returns a large file as just its structure (huge token saving).
Recover any full original byte-for-byte with expand.recall (or assemble) relevant past decisions and context;
remember decisions, gotchas, and rationale as you make them so the next session never starts
cold. Record standing user preferences with prefer.sanitize to redact secrets/PII; it
classifies the text shareable / needs_review / private.checkpoint before large changes; verify a proposed file against its retained
original to catch silent corruption; rollback to undo damage.anchor.Everything Cairn shows is lossless — the full original is always one expand away.
npx claudepluginhub vellixia/cairn --plugin cairnCreates, edits, and optimizes skills for Claude Code, including drafting, evaluating with test prompts, iterating on performance, and improving skill descriptions for better triggering accuracy.