jisundr

Cairn Retro — Development skill for Claude Code

Development community

Reflects on this session, drafts harness-update candidates with evidence from what happened, same confirm-then-write cycle as /cairn-setup.

How to install Cairn Retro

Installs to ~/.claude/skills/jisundr-cairn-2.0-cairn-retro/SKILL.md

Terminal

mkdir -p ~/.claude/skills/jisundr-cairn-2.0-cairn-retro && curl -fsSL https://raw.githubusercontent.com/jisundr/cairn-2.0/HEAD/commands/cairn-retro.md -o ~/.claude/skills/jisundr-cairn-2.0-cairn-retro/SKILL.md

Restart Claude Code, or start a new session, for it to be picked up.

What Cairn Retro does

description: Reflects on this session, drafts harness-update candidates with evidence from what happened, same confirm-then-write cycle as /cairn-setup.

Reflects on this session's conversation only — never the codebase, that's `/cairn-setup`'s job.

No .harness/ (none of the four files present) → say cairn has nothing to refine without one, point at /cairn-setup, stop. Writes nothing.
Look back over this session for: a correction given more than once, a wrong assumption about

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