KeiSeiKit-1.0/scripts/kei-message.sh
KeiSei84 48b2f5cc1c feat(msg): /msg skill — read/write cross-session mailbox by @id (#42)
Thin skill over the kei-message jsonl mailbox: /msg reads inbox, /msg @name text sends (identity = cwd basename), /msg all broadcasts, /msg list|who. send now accepts leading @name. Mirror of keigit 7b453aac.
2026-05-24 14:38:26 +07:00

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#!/bin/sh
# kei-message — minimal persistent mailbox so ANY Claude Code session can message
# ANY other (not just Agent-Teams teammates). Append-only jsonl bus; the
# mailbox-inject.sh UserPromptSubmit hook pulls unread into each session's
# context per turn. Identity = basename of the session's cwd (or --from/--to a
# name), plus the broadcast channel "all".
#
# kei message send [--to <name|all>] [--from <name>] <text...>
# kei message inbox # messages addressed to me (cwd) or all
# kei message list # whole bus (recent)
# kei message channels # known recipient names
#
# Store: ~/.claude/mailbox/messages.jsonl (one JSON object per line)
set -eu
command -v jq >/dev/null 2>&1 || { echo "kei message: jq required" >&2; exit 1; }
MBOX="$HOME/.claude/mailbox"
LOG="$MBOX/messages.jsonl"
mkdir -p "$MBOX"
[ -f "$LOG" ] || : > "$LOG"
me="$(basename "$PWD")"
cmd="${1:-inbox}"
[ $# -gt 0 ] && shift || true
case "$cmd" in
send)
to="all"; body=""
while [ $# -gt 0 ]; do
case "$1" in
--to) to="$2"; shift; shift ;;
--from) me="$2"; shift; shift ;;
--) shift; body="$body $*"; break ;;
# Leading @name = recipient (e.g. `send @frontend hi`). First token only;
# a later @x stays literal text.
@?*) if [ "$to" = "all" ] && [ -z "$body" ]; then to="${1#@}"; else body="$body $1"; fi; shift ;;
*) body="$body $1"; shift ;;
esac
done
body="${body# }"
[ -n "$body" ] || { echo "usage: kei message send [--to <name|all>] <text>" >&2; exit 1; }
# Sub-second component: GNU `date +%N` where available; on stock macOS (BSD
# date) %N is unsupported and prints literal "N" → fall back to /dev/urandom.
# Result id = epoch(10) + 6 digits = 16-digit integer, safely < 2^53.
ns="$(date +%N 2>/dev/null)"
case "$ns" in *[!0-9]*|'') ns="$(od -An -N4 -tu4 /dev/urandom 2>/dev/null | tr -dc 0-9)" ;; esac
sub="$(printf '%s000000' "$ns" | cut -c1-6)"
id="$(date +%s)${sub}"
jq -cn --argjson id "$id" --arg ts "$(date -u +%FT%TZ)" \
--arg from "$me" --arg to "$to" --arg body "$body" \
'{id:$id, ts:$ts, from:$from, to:$to, body:$body}' >> "$LOG"
echo "-> sent to '$to' (from '$me')"
;;
inbox|read)
while [ $# -gt 0 ]; do case "$1" in --me) me="$2"; shift; shift ;; *) shift ;; esac; done
jq -r --arg me "$me" '
select(.to==$me or .to=="all")
| "[\(.ts|sub("T";" ")|sub("Z";""))] \(.from) -> \(.to): \(.body)"' "$LOG" | tail -20
;;
list|all)
jq -r '"[\(.ts|sub("T";" ")|sub("Z";""))] \(.from) -> \(.to): \(.body)"' "$LOG" | tail -40
;;
channels|names|who)
jq -r '.to, .from' "$LOG" 2>/dev/null | sort -u | grep -v '^$' || true
;;
*)
echo "kei message: send [--to <name|all>] <text> | inbox | list | channels" >&2
exit 1
;;
esac