diff --git a/openclaw-setup-max/README.md b/openclaw-setup-max/README.md
index a8720fe..80daed0 100644
--- a/openclaw-setup-max/README.md
+++ b/openclaw-setup-max/README.md
@@ -40,6 +40,8 @@ Profiles are defined in `config/model-profiles.config.json`.
 - `config/model-profiles.config.json`: model profile definitions (`paid`, `free`)
 - `config/model-schedule.config.json`: schedule settings (`dayProfile`, `nightProfile`, hours)
 - `config/model-budget-guard.config.json`: high-cost warning and auto-revert settings
+- `config/models.env`: single-source model + schedule variables
+- `scripts/sync_models_from_env.sh`: sync JSON configs from `config/models.env`
 - `scripts/model_profile_switch.sh`: manual live switch command
 - `scripts/model_hygiene_workflow.sh`: apply profile + prune legacy model/provider/auth config
 - `scripts/model_schedule_guard.sh`: scheduled switch worker
@@ -84,13 +86,16 @@ PULL_LOCAL_MODELS=false bash ./setup/setup_openclaw_ollama.sh
 
 ## 4) Quick Start (Most Common)
 
-Run the hygiene workflow (recommended after any model changes):
+Use env-driven sync + hygiene workflow (recommended after any model changes):
 
 ```bash
 cd /Volumes/Data/openclaw-setups/openclaw-setup-max
+bash ./scripts/sync_models_from_env.sh
 bash ./scripts/model_hygiene_workflow.sh paid
 ```
 
+Edit `config/models.env` whenever you want to change paid/free models or schedule windows.
+
 Switch to free mode now:
 
 ```bash
diff --git a/openclaw-setup-max/config/model-profiles.config.json b/openclaw-setup-max/config/model-profiles.config.json
index 7fd0a3f..f17d57f 100644
--- a/openclaw-setup-max/config/model-profiles.config.json
+++ b/openclaw-setup-max/config/model-profiles.config.json
@@ -2,7 +2,7 @@
   "profiles": {
     "paid": {
       "description": "High-quality paid model for deep work",
-      "primary": "openrouter/qwen/qwen3-coder:free",
+      "primary": "openrouter/moonshotai/kimi-k2.5",
       "fallbacks": [
         "openrouter/qwen/qwen3-coder-next",
         "openrouter/qwen/qwen3-14b"
diff --git a/openclaw-setup-max/config/models.env b/openclaw-setup-max/config/models.env
new file mode 100644
index 0000000..a840dfd
--- /dev/null
+++ b/openclaw-setup-max/config/models.env
@@ -0,0 +1,10 @@
+# Model profile settings (single source of truth)
+PAID_PRIMARY=openrouter/moonshotai/kimi-k2.5
+PAID_FALLBACKS=openrouter/qwen/qwen3-coder-next,openrouter/qwen/qwen3-14b
+
+FREE_PRIMARY=openrouter/qwen/qwen3-coder:free
+FREE_FALLBACKS=openrouter/qwen/qwen3-14b
+
+# Format: dayProfile,nightProfile,dayStartHour,nightStartHour
+SCHEDULE=paid,free,7,22
+SCHEDULE_ENABLED=true
diff --git a/openclaw-setup-max/scripts/sync_models_from_env.sh b/openclaw-setup-max/scripts/sync_models_from_env.sh
new file mode 100755
index 0000000..af059e5
--- /dev/null
+++ b/openclaw-setup-max/scripts/sync_models_from_env.sh
@@ -0,0 +1,163 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+ROOT_DIR="$(cd "$SCRIPT_DIR/.." && pwd)"
+
+MODELS_ENV_FILE="${MODELS_ENV_FILE:-$ROOT_DIR/config/models.env}"
+PROFILES_CONFIG="${MODEL_PROFILES_CONFIG:-$ROOT_DIR/config/model-profiles.config.json}"
+SCHEDULE_CONFIG="${MODEL_SCHEDULE_CONFIG:-$ROOT_DIR/config/model-schedule.config.json}"
+BUDGET_CONFIG="${MODEL_GUARD_CONFIG:-$ROOT_DIR/config/model-budget-guard.config.json}"
+
+if ! command -v jq >/dev/null 2>&1; then
+  echo "[model-sync] jq is required" >&2
+  exit 1
+fi
+
+usage() {
+  cat <<'USAGE'
+Usage:
+  bash ./scripts/sync_models_from_env.sh
+
+Env source:
+  config/models.env (override with MODELS_ENV_FILE)
+
+Required variables:
+  PAID_PRIMARY
+  PAID_FALLBACKS
+  FREE_PRIMARY
+  FREE_FALLBACKS
+  SCHEDULE                  # dayProfile,nightProfile,dayStartHour,nightStartHour
+
+Optional variables:
+  SCHEDULE_ENABLED          # true/false (default: true)
+USAGE
+}
+
+trim() {
+  local s="$1"
+  s="${s#"${s%%[![:space:]]*}"}"
+  s="${s%"${s##*[![:space:]]}"}"
+  printf '%s' "$s"
+}
+
+csv_to_json_array() {
+  local csv="$1"
+  jq -cn --arg csv "$csv" '
+    $csv
+    | split(",")
+    | map(gsub("^\\s+|\\s+$"; ""))
+    | map(select(length > 0))
+  '
+}
+
+if [[ "${1:-}" == "-h" || "${1:-}" == "--help" ]]; then
+  usage
+  exit 0
+fi
+
+if [[ ! -f "$MODELS_ENV_FILE" ]]; then
+  echo "[model-sync] missing env file: $MODELS_ENV_FILE" >&2
+  exit 1
+fi
+if [[ ! -f "$PROFILES_CONFIG" || ! -f "$SCHEDULE_CONFIG" || ! -f "$BUDGET_CONFIG" ]]; then
+  echo "[model-sync] required config files are missing" >&2
+  exit 1
+fi
+
+set -a
+# shellcheck disable=SC1090
+source "$MODELS_ENV_FILE"
+set +a
+
+required=(PAID_PRIMARY PAID_FALLBACKS FREE_PRIMARY FREE_FALLBACKS SCHEDULE)
+for key in "${required[@]}"; do
+  if [[ -z "${!key:-}" ]]; then
+    echo "[model-sync] missing required variable: $key" >&2
+    exit 1
+  fi
+done
+
+paid_fallbacks_json="$(csv_to_json_array "$PAID_FALLBACKS")"
+free_fallbacks_json="$(csv_to_json_array "$FREE_FALLBACKS")"
+
+if [[ "$(jq -r 'length' <<<"$paid_fallbacks_json")" == "0" ]]; then
+  echo "[model-sync] PAID_FALLBACKS cannot be empty" >&2
+  exit 1
+fi
+if [[ "$(jq -r 'length' <<<"$free_fallbacks_json")" == "0" ]]; then
+  echo "[model-sync] FREE_FALLBACKS cannot be empty" >&2
+  exit 1
+fi
+
+IFS=',' read -r day_profile_raw night_profile_raw day_start_raw night_start_raw <<<"$SCHEDULE"
+day_profile="$(trim "${day_profile_raw:-}")"
+night_profile="$(trim "${night_profile_raw:-}")"
+day_start="$(trim "${day_start_raw:-}")"
+night_start="$(trim "${night_start_raw:-}")"
+
+if [[ -z "$day_profile" || -z "$night_profile" || -z "$day_start" || -z "$night_start" ]]; then
+  echo "[model-sync] SCHEDULE must be: dayProfile,nightProfile,dayStartHour,nightStartHour" >&2
+  exit 1
+fi
+if ! [[ "$day_start" =~ ^[0-9]+$ && "$night_start" =~ ^[0-9]+$ ]]; then
+  echo "[model-sync] schedule hours must be integers" >&2
+  exit 1
+fi
+if (( day_start < 0 || day_start > 23 || night_start < 0 || night_start > 23 )); then
+  echo "[model-sync] schedule hours must be in range 0..23" >&2
+  exit 1
+fi
+
+schedule_enabled="$(trim "${SCHEDULE_ENABLED:-true}")"
+if [[ "$schedule_enabled" != "true" && "$schedule_enabled" != "false" ]]; then
+  echo "[model-sync] SCHEDULE_ENABLED must be true or false" >&2
+  exit 1
+fi
+
+tmp_profiles="$(mktemp)"
+jq \
+  --arg paid_primary "$PAID_PRIMARY" \
+  --arg free_primary "$FREE_PRIMARY" \
+  --argjson paid_fallbacks "$paid_fallbacks_json" \
+  --argjson free_fallbacks "$free_fallbacks_json" \
+  '
+  .profiles.paid.primary = $paid_primary
+  | .profiles.paid.fallbacks = $paid_fallbacks
+  | .profiles.free.primary = $free_primary
+  | .profiles.free.fallbacks = $free_fallbacks
+  ' "$PROFILES_CONFIG" > "$tmp_profiles"
+mv "$tmp_profiles" "$PROFILES_CONFIG"
+
+tmp_schedule="$(mktemp)"
+jq \
+  --arg day_profile "$day_profile" \
+  --arg night_profile "$night_profile" \
+  --argjson day_start "$day_start" \
+  --argjson night_start "$night_start" \
+  --arg enabled "$schedule_enabled" \
+  '
+  .enabled = ($enabled == "true")
+  | .dayProfile = $day_profile
+  | .nightProfile = $night_profile
+  | .dayStartHour = $day_start
+  | .nightStartHour = $night_start
+  ' "$SCHEDULE_CONFIG" > "$tmp_schedule"
+mv "$tmp_schedule" "$SCHEDULE_CONFIG"
+
+tmp_budget="$(mktemp)"
+jq \
+  --arg low_model "$FREE_PRIMARY" \
+  '.lowModel = $low_model' \
+  "$BUDGET_CONFIG" > "$tmp_budget"
+mv "$tmp_budget" "$BUDGET_CONFIG"
+
+echo "[model-sync] updated:"
+echo "  - $PROFILES_CONFIG"
+echo "  - $SCHEDULE_CONFIG"
+echo "  - $BUDGET_CONFIG"
+echo ""
+echo "[model-sync] paid primary: $(jq -r '.profiles.paid.primary' "$PROFILES_CONFIG")"
+echo "[model-sync] free primary: $(jq -r '.profiles.free.primary' "$PROFILES_CONFIG")"
+echo "[model-sync] schedule: $(jq -r '.enabled, .dayProfile, .nightProfile, .dayStartHour, .nightStartHour' "$SCHEDULE_CONFIG" | paste -sd ',' -)"
+echo "[model-sync] budget lowModel: $(jq -r '.lowModel' "$BUDGET_CONFIG")"