- Creds on disk: `ls -l ~/.openclaw/credentials/whatsapp/<accountId>/creds.json` (mtime should be recent).
- Session store: `ls -l ~/.openclaw/agents/<agentId>/sessions/sessions.json` (path can be overridden in config). Count and recent recipients are surfaced via `status`.
- Relink flow: `openclaw channels logout && openclaw channels login --verbose` when status codes 409–515 or `loggedOut` appear in logs. (Note: the QR login flow auto-restarts once for status 515 after pairing.)
-`gateway.channelHealthCheckMinutes`: how often the gateway checks channel health. Default: `5`. Set `0` to disable health-monitor restarts globally.
-`gateway.channelStaleEventThresholdMinutes`: how long a connected channel can stay idle before the health monitor treats it as stale and restarts it. Default: `30`. Keep this greater than or equal to `gateway.channelHealthCheckMinutes`.
-`gateway.channelMaxRestartsPerHour`: rolling one-hour cap for health-monitor restarts per channel/account. Default: `10`.
-`channels.<provider>.healthMonitor.enabled`: disable health-monitor restarts for a specific channel while leaving global monitoring enabled.
-`channels.<provider>.accounts.<accountId>.healthMonitor.enabled`: multi-account override that wins over the channel-level setting.
- These per-channel overrides apply to the built-in channel monitors that expose them today: Discord, Google Chat, iMessage, Microsoft Teams, Signal, Slack, Telegram, and WhatsApp.
- No inbound messages → confirm linked phone is online and the sender is allowed (`channels.whatsapp.allowFrom`); for group chats, ensure allowlist + mention rules match (`channels.whatsapp.groups`, `agents.list[].groupChat.mentionPatterns`).
`openclaw health --json` asks the running Gateway for its health snapshot (no direct channel sockets from the CLI). It reports linked creds/auth age when available, per-channel probe summaries, session-store summary, and a probe duration. It exits non-zero if the Gateway is unreachable or the probe fails/timeouts. Use `--timeout <ms>` to override the 10s default.