cairn-cli
A thin command-line interface over cairn-core. Standard-library only.
uvx cairn --workspace ~/Documents/notes ls
Commands
cairn [--workspace DIR] [--json] <command>
ls [path] list a directory
tree [path] show the file tree
read <path> print a file (flattened .uni text)
create <path> [content] create a file ('-' reads stdin)
mkdir <path> create a folder
mv <path> <target_dir> move a file/folder
rename <path> <new_name> rename in place
rm <path> delete
edit <path> <old> <new> replace a unique occurrence
import <path> [--all] convert docx/pdf/pptx/csv/xlsx/md into .uni
grep <pattern> [path] search file contents
find <query> [path] search file names
tag <path> [tags...] get (no args) or set tags
tags show the workspace tag tree
retrieve <query> [-k N] find relevant documents
serve [--host H --port N] run the local HTTP API (contract for the web UI)
mcp run the MCP server (stdio) for Claude Code / Codex
--json makes any command emit machine-readable JSON.
Examples
export CAIRN_WORKSPACE=~/Documents/notes
cairn tree
echo "meeting notes" | cairn create inbox/2026-07-16.uni -
cairn tag inbox/2026-07-16.uni meetings q3
cairn retrieve "budget planning" -k 5
cairn serve # http://127.0.0.1:4177/api/health
Three faces, one core
cairn (this CLI), cairn-mcp-server (the MCP server), and the planned web UI
are all thin adapters over cairn-core, so they can never drift. Use the
CLI for scripting, mcp inside Claude Code / Codex, and serve to back the
web UI.
1 maintainer
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