Claude Code CLI Wrapper to allow auto start new session with next prompt when printing <<<LOOP_RESTART prompt-here>>>

claude-loop

#!/usr/bin/env bash
set -u
set -o pipefail
# Force C locale so ASCII byte ranges in regexes ([@-~] etc.) behave.
export LC_ALL=C

raw_file="${TMPDIR:-/tmp}/claude-loop.$$.raw"
payload_file="${TMPDIR:-/tmp}/claude-loop.$$.payload"
trap 'rm -f "$raw_file" "$payload_file"' EXIT
max_iters=50
iter=0
keep_raw=0
claude_flags=()
next_cmd=""

pty_helper="$(dirname "$(readlink -f "$0")")/claude-loop-pty"
if [[ ! -x "$pty_helper" ]]; then
    printf '[claude-loop] missing helper: %s\n' "$pty_helper" >&2
    exit 3
fi

for arg in "$@"; do
    if [[ "$arg" == "--keep-raw" ]]; then
        keep_raw=1
    elif [[ "$arg" == -* ]]; then
        claude_flags+=("$arg")
    elif [[ -z "$next_cmd" ]]; then
        next_cmd="$arg"
    else
        printf '[claude-loop] unexpected extra positional arg: %s\n' "$arg" >&2
        exit 2
    fi
done

export CLAUDE_LOOP_RAW="$raw_file"
export CLAUDE_LOOP_PAYLOAD_OUT="$payload_file"

while (( iter < max_iters )); do
    (( iter++ ))
    rm -f "$raw_file" "$payload_file"
    cmd=(claude "${claude_flags[@]}")
    if [[ -n "$next_cmd" ]]; then
        cmd+=(-- "$next_cmd")
    fi
    printf '[claude-loop] (%d/%d) launching: %s\n' \
        "$iter" "$max_iters" "${cmd[*]}"
    "$pty_helper" "${cmd[@]}"
    rc=$?

    if (( keep_raw )); then
        debug_path="${TMPDIR:-/tmp}/claude-loop.debug.$$.iter${iter}.raw"
        cp "$raw_file" "$debug_path" 2>/dev/null && \
            printf '[claude-loop] kept raw transcript: %s\n' "$debug_path" >&2
    fi

    # Recover terminal state (TUI + nested PTYs sometimes leave it weird).
    stty sane 2>/dev/null || true
    printf '\033[?1049l\033[?25h\033[?2004l\033[?1000l\033[?1002l\033[?1003l\033[?1006l'

    if (( rc == 42 )) && [[ -s "$payload_file" ]]; then
        next_cmd=$(cat "$payload_file")
        printf '\n[claude-loop] trigger detected, restarting with: %s\n\n' "$next_cmd"
    else
        printf '\n[claude-loop] claude exited without a trigger (rc=%d), stopping.\n' "$rc"
        exit 0
    fi
done
printf '\n[claude-loop] hit max_iters=%d, stopping to avoid runaway loop.\n' "$max_iters" >&2
exit 1