feat(kei message): persistent inter-session mailbox + pull-inbox hook (#40)

Any Claude Code session can message any other (not just Agent-Teams teammates),
no tmux. Append-only jsonl bus + UserPromptSubmit hook pulling unread per turn.
kei-message.sh (send/inbox/list, address by cwd-basename or "all"),
mailbox-inject.sh (cursor dedup, first-turn baseline, no self-echo), bin/kei
`message` dispatch, lib-scaffold copies all scripts/*.sh, snippet wires the hook.
Bypass KEI_MAILBOX_BYPASS=1. Verified by 2-session simulation.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
KeiSei84 2026-05-23 14:06:27 +07:00 committed by GitHub
parent b24f1ba9cd
commit 4dbe6fd159
5 changed files with 144 additions and 11 deletions

10
bin/kei
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@ -8,6 +8,7 @@
# kei # splash → claude (interactive REPL)
# kei --no-splash # skip splash → exec claude
# kei --status # status only, don't launch claude
# kei message ... # inter-session mailbox (send/inbox/list) — see kei-message.sh
# kei [args...] # splash → claude args... (forwarded verbatim)
#
# The splash shows: substrate version, agent count, last sleep run,
@ -17,6 +18,15 @@
set -e
# --- subcommand dispatch (before splash) ---------------------------------
# `kei message ...` → the mailbox CLI; everything else falls through to launch.
case "${1:-}" in
message|msg|m)
shift
exec "$HOME/.claude/scripts/kei-message.sh" "$@"
;;
esac
# --- args ----------------------------------------------------------------
SPLASH=1
STATUS_ONLY=0

57
hooks/mailbox-inject.sh Executable file
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@ -0,0 +1,57 @@
#!/bin/sh
# mailbox-inject — pull-inbox for kei-message. On every UserPromptSubmit, inject
# any messages addressed to THIS session (by cwd-basename or the broadcast
# channel "all") that arrived since last turn, into the session context, so
# Claude sees what other sessions sent. Per-session read cursor dedups; first
# turn starts fresh (no history dump). Never blocks (always exit 0).
# Event: UserPromptSubmit. Bypass: KEI_MAILBOX_BYPASS=1.
[ "${KEI_MAILBOX_BYPASS:-}" = "1" ] && exit 0
command -v jq >/dev/null 2>&1 || exit 0
INPUT=$(cat)
SID=$(printf '%s' "$INPUT" | jq -r '.session_id // empty' 2>/dev/null)
CWD=$(printf '%s' "$INPUT" | jq -r '.cwd // empty' 2>/dev/null)
[ -n "$CWD" ] || CWD="$PWD"
me="$(basename "$CWD")"
MBOX="$HOME/.claude/mailbox"
LOG="$MBOX/messages.jsonl"
mkdir -p "$MBOX"
CUR="$MBOX/.cursor-${SID:-$me}"
# Highest id currently in the bus (0 if the log doesn't exist yet / is empty).
if [ -f "$LOG" ]; then
maxid=$(jq -s 'map(.id) | max // 0' "$LOG" 2>/dev/null || echo 0)
else
maxid=0
fi
[ -n "$maxid" ] || maxid=0
# First fire for this session: record baseline cursor, show nothing. Done even
# when the bus is still empty — so messages that arrive AFTER this point (but
# before the session's next turn) are not missed.
if [ ! -f "$CUR" ]; then
echo "$maxid" > "$CUR"
exit 0
fi
# Nothing to read yet.
[ -f "$LOG" ] || { echo "$maxid" > "$CUR"; exit 0; }
last=$(cat "$CUR" 2>/dev/null || echo 0)
case "$last" in ''|*[!0-9]*) last=0 ;; esac
new=$(jq -r --argjson last "$last" --arg me "$me" '
select(.id > $last)
| select(.to == $me or .to == "all")
| select(.from != $me)
| " • \(.from) -> \(.to): \(.body)"' "$LOG" 2>/dev/null)
# Advance cursor past everything seen this turn.
echo "$maxid" > "$CUR"
if [ -n "$new" ]; then
printf '[kei mailbox] new message(s) for this session (%s):\n%s\n (reply: kei message send --to <name> "...")\n' "$me" "$new"
fi
exit 0

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@ -66,20 +66,19 @@ copy_sleep_scripts() {
fi
}
# KeiSei tamagotchi statusline — copy the renderer + state updater into
# ~/.claude/scripts/. Zero binary deps (pure bash, state under ~/.claude/pet/),
# always available regardless of profile. The statusLine + pet-update hooks
# are wired into settings.json by the settings-snippet merge (lib-hooks.sh).
# Pure-bash scripts → ~/.claude/scripts/ (tamagotchi renderer + state updater,
# kei-message mailbox CLI, any future scripts). Zero binary deps, always
# available regardless of profile. statusLine + pet-update + mailbox-inject
# hooks are wired into settings.json by the settings-snippet merge (lib-hooks.sh).
copy_pet_scripts() {
local pet_sh src dst="$HOME_DIR/.claude/scripts"
local src dst="$HOME_DIR/.claude/scripts" name
[ -d "$KIT_DIR/scripts" ] || return 0
mkdir -p "$dst"
for pet_sh in keisei-pet.sh keisei-pet-update.sh; do
src="$KIT_DIR/scripts/$pet_sh"
if [ -f "$src" ]; then
cp -f "$src" "$dst/$pet_sh"
chmod +x "$dst/$pet_sh"
fi
for src in "$KIT_DIR/scripts/"*.sh; do
[ -f "$src" ] || continue
name="$(basename "$src")"
cp -f "$src" "$dst/$name"
chmod +x "$dst/$name"
done
}

62
scripts/kei-message.sh Executable file
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@ -0,0 +1,62 @@
#!/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 $*"; break ;;
*) body="$body $1"; shift ;;
esac
done
body="${body# }"
[ -n "$body" ] || { echo "usage: kei message send [--to <name|all>] <text>" >&2; exit 1; }
id="$(date +%s)$(date +%N 2>/dev/null | cut -c1-6 || printf '000000')"
jq -cn --argjson id "$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

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@ -241,6 +241,11 @@
{
"type": "command",
"command": "~/.claude/scripts/keisei-pet-update.sh prompt"
},
{
"type": "command",
"command": "~/.claude/hooks/mailbox-inject.sh",
"statusMessage": "kei mailbox pull-inbox..."
}
]
}