feat: add heartbeat cli and relay trigger

src/auto-reply/claude.ts

@@ -4,7 +4,7 @@ import { z } from "zod";
 // Preferred binary name for Claude CLI invocations.
 export const CLAUDE_BIN = "claude";
 export const CLAUDE_IDENTITY_PREFIX =
-  "You are Clawd (Claude) running on the user's Mac via warelay. Your scratchpad is /Users/steipete/clawd; this is your folder and you can add what you like in markdown files and/or images. You don't need to be concise, but WhatsApp replies must stay under ~1500 characters. Media you can send: images ≤6MB, audio/video ≤16MB, documents ≤100MB. The prompt may include a media path and an optional Transcript: section—use them when present.";
+  "You are Clawd (Claude) running on the user's Mac via warelay. Your scratchpad is /Users/steipete/clawd; this is your folder and you can add what you like in markdown files and/or images. You don't need to be concise, but WhatsApp replies must stay under ~1500 characters. Media you can send: images ≤6MB, audio/video ≤16MB, documents ≤100MB. The prompt may include a media path and an optional Transcript: section—use them when present. If a prompt is a heartbeat poll and nothing needs attention, reply with exactly HEARTBEAT_OK and nothing else; for any alert, do not include HEARTBEAT_OK.";
 
 function extractClaudeText(payload: unknown): string | undefined {
   // Best-effort walker to find the primary text field in Claude JSON outputs.

src/cli/program.ts

@@ -11,6 +11,7 @@ import {
   logoutWeb,
   monitorWebProvider,
   pickProvider,
+  runWebHeartbeatOnce,
   type WebMonitorTuning,
 } from "../provider-web.js";
 import { defaultRuntime } from "../runtime.js";
@@ -174,6 +175,62 @@ Examples:
       }
     });
 
+  program
+    .command("heartbeat")
+    .description("Trigger a heartbeat poll once (web provider)")
+    .option("--provider <provider>", "auto | web", "auto")
+    .option("--to <number>", "Override target E.164; defaults to allowFrom[0]")
+    .option("--verbose", "Verbose logging", false)
+    .addHelpText(
+      "after",
+      `
+Examples:
+  warelay heartbeat                 # uses web session + first allowFrom contact
+  warelay heartbeat --verbose       # prints detailed heartbeat logs
+  warelay heartbeat --to +1555123   # override destination`,
+    )
+    .action(async (opts) => {
+      setVerbose(Boolean(opts.verbose));
+      const cfg = loadConfig();
+      const to =
+        opts.to ??
+        (Array.isArray(cfg.inbound?.allowFrom) &&
+        cfg.inbound?.allowFrom?.length > 0
+          ? cfg.inbound.allowFrom[0]
+          : null);
+      if (!to) {
+        defaultRuntime.error(
+          danger(
+            "No destination found. Set inbound.allowFrom in ~/.warelay/warelay.json or pass --to <E.164>.",
+          ),
+        );
+        defaultRuntime.exit(1);
+      }
+      const providerPref = String(opts.provider ?? "auto");
+      if (!["auto", "web"].includes(providerPref)) {
+        defaultRuntime.error("--provider must be auto or web");
+        defaultRuntime.exit(1);
+      }
+      const provider = await pickProvider(providerPref as "auto" | "web");
+      if (provider !== "web") {
+        defaultRuntime.error(
+          danger(
+            "Heartbeat is only supported for the web provider. Link with `warelay login --verbose`.",
+          ),
+        );
+        defaultRuntime.exit(1);
+      }
+      try {
+        await runWebHeartbeatOnce({
+          to,
+          verbose: Boolean(opts.verbose),
+          runtime: defaultRuntime,
+        });
+      } catch {
+        defaultRuntime.exit(1);
+      }
+    });
+
   program
     .command("relay")
     .description("Auto-reply to inbound messages (auto-selects web or twilio)")
@@ -197,6 +254,11 @@ Examples:
       "Initial reconnect backoff for web relay (ms)",
     )
     .option("--web-retry-max <ms>", "Max reconnect backoff for web relay (ms)")
+    .option(
+      "--heartbeat-now",
+      "Run a heartbeat immediately when relay starts (web provider)",
+      false,
+    )
     .option("--verbose", "Verbose logging", false)
     .addHelpText(
       "after",
@@ -234,6 +296,7 @@ Examples:
         opts.webRetryMax !== undefined
           ? Number.parseInt(String(opts.webRetryMax), 10)
           : undefined;
+      const heartbeatNow = Boolean(opts.heartbeatNow);
       if (Number.isNaN(intervalSeconds) || intervalSeconds <= 0) {
         defaultRuntime.error("Interval must be a positive integer");
         defaultRuntime.exit(1);
@@ -281,6 +344,7 @@ Examples:
 
       const webTuning: WebMonitorTuning = {};
       if (webHeartbeat !== undefined) webTuning.heartbeatSeconds = webHeartbeat;
+      if (heartbeatNow) webTuning.replyHeartbeatNow = true;
       const reconnect: WebMonitorTuning["reconnect"] = {};
       if (webRetries !== undefined) reconnect.maxAttempts = webRetries;
       if (webRetryInitial !== undefined) reconnect.initialMs = webRetryInitial;
@@ -451,5 +515,31 @@ Examples:
       }
     });
 
+  program
+    .command("relay:tmux:heartbeat")
+    .description(
+      "Run relay --verbose with an immediate heartbeat inside tmux (session warelay-relay), then attach",
+    )
+    .action(async () => {
+      try {
+        const session = await spawnRelayTmux(
+          "pnpm warelay relay --verbose --heartbeat-now",
+          true,
+        );
+        defaultRuntime.log(
+          info(
+            `tmux session started and attached: ${session} (pane running "pnpm warelay relay --verbose --heartbeat-now")`,
+          ),
+        );
+      } catch (err) {
+        defaultRuntime.error(
+          danger(
+            `Failed to start relay tmux session with heartbeat: ${String(err)}`,
+          ),
+        );
+        defaultRuntime.exit(1);
+      }
+    });
+
   return program;
 }

src/config/config.ts

@@ -20,6 +20,7 @@ export type SessionConfig = {
   sendSystemOnce?: boolean;
   sessionIntro?: string;
   typingIntervalSeconds?: number;
+  heartbeatMinutes?: number;
 };
 
 export type LoggingConfig = {
@@ -97,6 +98,7 @@ const ReplySchema = z
         typingIntervalSeconds: z.number().int().positive().optional(),
       })
       .optional(),
+    heartbeatMinutes: z.number().int().nonnegative().optional(),
     claudeOutputFormat: z
       .union([
         z.literal("text"),

src/provider-web.ts

@@ -2,7 +2,10 @@
 // module keeps responsibilities small and testable without changing the public API.
 export {
   DEFAULT_WEB_MEDIA_BYTES,
+  HEARTBEAT_PROMPT,
+  HEARTBEAT_TOKEN,
   monitorWebProvider,
+  runWebHeartbeatOnce,
   type WebMonitorTuning,
 } from "./web/auto-reply.js";
 export {

src/web/auto-reply.test.ts

@@ -3,14 +3,110 @@ import fs from "node:fs/promises";
 import sharp from "sharp";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 
+import type { WarelayConfig } from "../config/config.js";
 import { resetLogger, setLoggerOverride } from "../logging.js";
-import { monitorWebProvider } from "./auto-reply.js";
+import {
+  HEARTBEAT_TOKEN,
+  monitorWebProvider,
+  resolveReplyHeartbeatMinutes,
+  runWebHeartbeatOnce,
+  stripHeartbeatToken,
+} from "./auto-reply.js";
+import type { sendMessageWeb } from "./outbound.js";
 import {
   resetBaileysMocks,
   resetLoadConfigMock,
   setLoadConfigMock,
 } from "./test-helpers.js";
 
+describe("heartbeat helpers", () => {
+  it("strips heartbeat token and skips when only token", () => {
+    expect(stripHeartbeatToken(undefined)).toEqual({
+      shouldSkip: true,
+      text: "",
+    });
+    expect(stripHeartbeatToken("  ")).toEqual({
+      shouldSkip: true,
+      text: "",
+    });
+    expect(stripHeartbeatToken(HEARTBEAT_TOKEN)).toEqual({
+      shouldSkip: true,
+      text: "",
+    });
+  });
+
+  it("keeps content and removes token when mixed", () => {
+    expect(stripHeartbeatToken(`ALERT ${HEARTBEAT_TOKEN}`)).toEqual({
+      shouldSkip: false,
+      text: "ALERT",
+    });
+    expect(stripHeartbeatToken(`hello`)).toEqual({
+      shouldSkip: false,
+      text: "hello",
+    });
+  });
+
+  it("resolves heartbeat minutes with default and overrides", () => {
+    const cfgBase: WarelayConfig = {
+      inbound: {
+        reply: { mode: "command" as const },
+      },
+    };
+    expect(resolveReplyHeartbeatMinutes(cfgBase)).toBe(30);
+    expect(
+      resolveReplyHeartbeatMinutes({
+        inbound: { reply: { mode: "command", heartbeatMinutes: 5 } },
+      }),
+    ).toBe(5);
+    expect(
+      resolveReplyHeartbeatMinutes({
+        inbound: { reply: { mode: "command", heartbeatMinutes: 0 } },
+      }),
+    ).toBeNull();
+    expect(resolveReplyHeartbeatMinutes(cfgBase, 7)).toBe(7);
+    expect(
+      resolveReplyHeartbeatMinutes({
+        inbound: { reply: { mode: "text" } },
+      }),
+    ).toBeNull();
+  });
+});
+
+describe("runWebHeartbeatOnce", () => {
+  it("skips when heartbeat token returned", async () => {
+    const sender: typeof sendMessageWeb = vi.fn();
+    const resolver = vi.fn(async () => ({ text: HEARTBEAT_TOKEN }));
+    setLoadConfigMock({
+      inbound: { allowFrom: ["+1555"], reply: { mode: "command" } },
+    });
+    await runWebHeartbeatOnce({
+      to: "+1555",
+      verbose: false,
+      sender,
+      replyResolver: resolver,
+    });
+    expect(resolver).toHaveBeenCalled();
+    expect(sender).not.toHaveBeenCalled();
+  });
+
+  it("sends when alert text present", async () => {
+    const sender: typeof sendMessageWeb = vi
+      .fn()
+      .mockResolvedValue({ messageId: "m1", toJid: "jid" });
+    const resolver = vi.fn(async () => ({ text: "ALERT" }));
+    setLoadConfigMock({
+      inbound: { allowFrom: ["+1555"], reply: { mode: "command" } },
+    });
+    await runWebHeartbeatOnce({
+      to: "+1555",
+      verbose: false,
+      sender,
+      replyResolver: resolver,
+    });
+    expect(sender).toHaveBeenCalledWith("+1555", "ALERT", { verbose: false });
+  });
+});
+
 describe("web auto-reply", () => {
   beforeEach(() => {
     vi.clearAllMocks();

src/web/auto-reply.ts

@@ -1,4 +1,5 @@
 import { getReplyFromConfig } from "../auto-reply/reply.js";
+import type { ReplyPayload } from "../auto-reply/types.js";
 import { waitForever } from "../cli/wait.js";
 import { loadConfig } from "../config/config.js";
 import { danger, isVerbose, logVerbose, success } from "../globals.js";
@@ -7,6 +8,7 @@ import { getChildLogger } from "../logging.js";
 import { defaultRuntime, type RuntimeEnv } from "../runtime.js";
 import { monitorWebInbox } from "./inbound.js";
 import { loadWebMedia } from "./media.js";
+import { sendMessageWeb } from "./outbound.js";
 import {
   computeBackoff,
   newConnectionId,
@@ -18,16 +20,249 @@ import {
 import { getWebAuthAgeMs } from "./session.js";
 
 const DEFAULT_WEB_MEDIA_BYTES = 5 * 1024 * 1024;
+type WebInboundMsg = Parameters<
+  typeof monitorWebInbox
+>[0]["onMessage"] extends (msg: infer M) => unknown
+  ? M
+  : never;
 
 export type WebMonitorTuning = {
   reconnect?: Partial<ReconnectPolicy>;
   heartbeatSeconds?: number;
+  replyHeartbeatMinutes?: number;
+  replyHeartbeatNow?: boolean;
   sleep?: (ms: number, signal?: AbortSignal) => Promise<void>;
 };
 
 const formatDuration = (ms: number) =>
   ms >= 1000 ? `${(ms / 1000).toFixed(2)}s` : `${ms}ms`;
 
+const DEFAULT_REPLY_HEARTBEAT_MINUTES = 30;
+export const HEARTBEAT_TOKEN = "HEARTBEAT_OK";
+export const HEARTBEAT_PROMPT =
+  "HEARTBEAT ping — if nothing important happened, reply exactly HEARTBEAT_OK. Otherwise return a concise alert.";
+
+export function resolveReplyHeartbeatMinutes(
+  cfg: ReturnType<typeof loadConfig>,
+  overrideMinutes?: number,
+) {
+  const raw = overrideMinutes ?? cfg.inbound?.reply?.heartbeatMinutes;
+  if (raw === 0) return null;
+  if (typeof raw === "number" && raw > 0) return raw;
+  return cfg.inbound?.reply?.mode === "command"
+    ? DEFAULT_REPLY_HEARTBEAT_MINUTES
+    : null;
+}
+
+export function stripHeartbeatToken(raw?: string) {
+  if (!raw) return { shouldSkip: true, text: "" };
+  const trimmed = raw.trim();
+  if (!trimmed) return { shouldSkip: true, text: "" };
+  if (trimmed === HEARTBEAT_TOKEN) return { shouldSkip: true, text: "" };
+  const withoutToken = trimmed.replaceAll(HEARTBEAT_TOKEN, "").trim();
+  return {
+    shouldSkip: withoutToken.length === 0,
+    text: withoutToken || trimmed,
+  };
+}
+
+export async function runWebHeartbeatOnce(opts: {
+  to: string;
+  verbose?: boolean;
+  replyResolver?: typeof getReplyFromConfig;
+  runtime?: RuntimeEnv;
+  sender?: typeof sendMessageWeb;
+}) {
+  const { to, verbose = false } = opts;
+  const _runtime = opts.runtime ?? defaultRuntime;
+  const replyResolver = opts.replyResolver ?? getReplyFromConfig;
+  const sender = opts.sender ?? sendMessageWeb;
+  const runId = newConnectionId();
+  const heartbeatLogger = getChildLogger({
+    module: "web-heartbeat",
+    runId,
+    to,
+  });
+
+  const cfg = loadConfig();
+
+  try {
+    const replyResult = await replyResolver(
+      {
+        Body: HEARTBEAT_PROMPT,
+        From: to,
+        To: to,
+        MessageSid: undefined,
+      },
+      undefined,
+      cfg,
+    );
+    if (
+      !replyResult ||
+      (!replyResult.text &&
+        !replyResult.mediaUrl &&
+        !replyResult.mediaUrls?.length)
+    ) {
+      heartbeatLogger.info({ to, reason: "empty-reply" }, "heartbeat skipped");
+      if (verbose) console.log(success("heartbeat: ok (empty reply)"));
+      return;
+    }
+
+    const hasMedia =
+      (replyResult.mediaUrl ?? replyResult.mediaUrls?.length ?? 0) > 0;
+    const stripped = stripHeartbeatToken(replyResult.text);
+    if (stripped.shouldSkip && !hasMedia) {
+      heartbeatLogger.info(
+        { to, reason: "heartbeat-token", rawLength: replyResult.text?.length },
+        "heartbeat skipped",
+      );
+      console.log(success("heartbeat: ok (HEARTBEAT_OK)"));
+      return;
+    }
+
+    if (hasMedia) {
+      heartbeatLogger.warn(
+        { to },
+        "heartbeat reply contained media; sending text only",
+      );
+    }
+
+    const finalText = stripped.text || replyResult.text || "";
+    const sendResult = await sender(to, finalText, { verbose });
+    heartbeatLogger.info(
+      { to, messageId: sendResult.messageId, chars: finalText.length },
+      "heartbeat sent",
+    );
+    console.log(success(`heartbeat: alert sent to ${to}`));
+  } catch (err) {
+    heartbeatLogger.warn({ to, error: String(err) }, "heartbeat failed");
+    console.log(danger(`heartbeat: failed - ${String(err)}`));
+    throw err;
+  }
+}
+
+async function deliverWebReply(params: {
+  replyResult: ReplyPayload;
+  msg: WebInboundMsg;
+  maxMediaBytes: number;
+  replyLogger: ReturnType<typeof getChildLogger>;
+  runtime: RuntimeEnv;
+  connectionId?: string;
+  skipLog?: boolean;
+}) {
+  const {
+    replyResult,
+    msg,
+    maxMediaBytes,
+    replyLogger,
+    runtime,
+    connectionId,
+    skipLog,
+  } = params;
+  const replyStarted = Date.now();
+  const mediaList = replyResult.mediaUrls?.length
+    ? replyResult.mediaUrls
+    : replyResult.mediaUrl
+      ? [replyResult.mediaUrl]
+      : [];
+
+  if (mediaList.length === 0 && replyResult.text) {
+    await msg.reply(replyResult.text || "");
+    if (!skipLog) {
+      logInfo(
+        `✅ Sent web reply to ${msg.from} (${(Date.now() - replyStarted).toFixed(0)}ms)`,
+        runtime,
+      );
+    }
+    replyLogger.info(
+      {
+        correlationId: msg.id ?? newConnectionId(),
+        connectionId: connectionId ?? null,
+        to: msg.from,
+        from: msg.to,
+        text: replyResult.text,
+        mediaUrl: null,
+        mediaSizeBytes: null,
+        mediaKind: null,
+        durationMs: Date.now() - replyStarted,
+      },
+      "auto-reply sent (text)",
+    );
+    return;
+  }
+
+  const cleanText = replyResult.text ?? undefined;
+  for (const [index, mediaUrl] of mediaList.entries()) {
+    try {
+      const media = await loadWebMedia(mediaUrl, maxMediaBytes);
+      if (isVerbose()) {
+        logVerbose(
+          `Web auto-reply media size: ${(media.buffer.length / (1024 * 1024)).toFixed(2)}MB`,
+        );
+        logVerbose(
+          `Web auto-reply media source: ${mediaUrl} (kind ${media.kind})`,
+        );
+      }
+      const caption = index === 0 ? cleanText || undefined : undefined;
+      if (media.kind === "image") {
+        await msg.sendMedia({
+          image: media.buffer,
+          caption,
+          mimetype: media.contentType,
+        });
+      } else if (media.kind === "audio") {
+        await msg.sendMedia({
+          audio: media.buffer,
+          ptt: true,
+          mimetype: media.contentType,
+          caption,
+        });
+      } else if (media.kind === "video") {
+        await msg.sendMedia({
+          video: media.buffer,
+          caption,
+          mimetype: media.contentType,
+        });
+      } else {
+        const fileName = mediaUrl.split("/").pop() ?? "file";
+        const mimetype = media.contentType ?? "application/octet-stream";
+        await msg.sendMedia({
+          document: media.buffer,
+          fileName,
+          caption,
+          mimetype,
+        });
+      }
+      logInfo(
+        `✅ Sent web media reply to ${msg.from} (${(media.buffer.length / (1024 * 1024)).toFixed(2)}MB)`,
+        runtime,
+      );
+      replyLogger.info(
+        {
+          correlationId: msg.id ?? newConnectionId(),
+          connectionId: connectionId ?? null,
+          to: msg.from,
+          from: msg.to,
+          text: index === 0 ? (cleanText ?? null) : null,
+          mediaUrl,
+          mediaSizeBytes: media.buffer.length,
+          mediaKind: media.kind,
+          durationMs: Date.now() - replyStarted,
+        },
+        "auto-reply sent (media)",
+      );
+    } catch (err) {
+      console.error(
+        danger(`Failed sending web media to ${msg.from}: ${String(err)}`),
+      );
+      if (index === 0 && cleanText) {
+        console.log(`⚠️  Media skipped; sent text-only to ${msg.from}`);
+        await msg.reply(cleanText || "");
+      }
+    }
+  }
+}
+
 export async function monitorWebProvider(
   verbose: boolean,
   listenerFactory: typeof monitorWebInbox | undefined = monitorWebInbox,
@@ -51,6 +286,10 @@ export async function monitorWebProvider(
     cfg,
     tuning.heartbeatSeconds,
   );
+  const replyHeartbeatMinutes = resolveReplyHeartbeatMinutes(
+    cfg,
+    tuning.replyHeartbeatMinutes,
+  );
   const reconnectPolicy = resolveReconnectPolicy(cfg, tuning.reconnect);
   const sleep =
     tuning.sleep ??
@@ -79,8 +318,10 @@ export async function monitorWebProvider(
     const connectionId = newConnectionId();
     const startedAt = Date.now();
     let heartbeat: NodeJS.Timeout | null = null;
+    let replyHeartbeatTimer: NodeJS.Timeout | null = null;
     let lastMessageAt: number | null = null;
     let handledMessages = 0;
+    let lastInboundMsg: WebInboundMsg | null = null;
 
     const listener = await (listenerFactory ?? monitorWebInbox)({
       verbose,
@@ -106,7 +347,8 @@ export async function monitorWebProvider(
 
         console.log(`\n[${ts}] ${msg.from} -> ${msg.to}: ${msg.body}`);
 
-        const replyStarted = Date.now();
+        lastInboundMsg = msg;
+
         const replyResult = await (replyResolver ?? getReplyFromConfig)(
           {
             Body: msg.body,
@@ -133,122 +375,27 @@ export async function monitorWebProvider(
           return;
         }
         try {
-          const mediaList = replyResult.mediaUrls?.length
+          await deliverWebReply({
-            ? replyResult.mediaUrls
+            replyResult,
-            : replyResult.mediaUrl
+            msg,
-              ? [replyResult.mediaUrl]
+            maxMediaBytes,
-              : [];
+            replyLogger,
-
+            runtime,
-          if (mediaList.length > 0) {
+            connectionId,
-            logVerbose(
+          });
-              `Web auto-reply media detected: ${mediaList.filter(Boolean).join(", ")}`,
-            );
-            for (const [index, mediaUrl] of mediaList.entries()) {
-              try {
-                const media = await loadWebMedia(mediaUrl, maxMediaBytes);
-                if (isVerbose()) {
-                  logVerbose(
-                    `Web auto-reply media size: ${(media.buffer.length / (1024 * 1024)).toFixed(2)}MB`,
-                  );
-                  logVerbose(
-                    `Web auto-reply media source: ${mediaUrl} (kind ${media.kind})`,
-                  );
-                }
-                const caption =
-                  index === 0 ? replyResult.text || undefined : undefined;
-                if (media.kind === "image") {
-                  await msg.sendMedia({
-                    image: media.buffer,
-                    caption,
-                    mimetype: media.contentType,
-                  });
-                } else if (media.kind === "audio") {
-                  await msg.sendMedia({
-                    audio: media.buffer,
-                    ptt: true,
-                    mimetype: media.contentType,
-                    caption,
-                  });
-                } else if (media.kind === "video") {
-                  await msg.sendMedia({
-                    video: media.buffer,
-                    caption,
-                    mimetype: media.contentType,
-                  });
-                } else {
-                  const fileName = mediaUrl.split("/").pop() ?? "file";
-                  const mimetype =
-                    media.contentType ?? "application/octet-stream";
-                  await msg.sendMedia({
-                    document: media.buffer,
-                    fileName,
-                    caption,
-                    mimetype,
-                  });
-                }
-                logInfo(
-                  `✅ Sent web media reply to ${msg.from} (${(media.buffer.length / (1024 * 1024)).toFixed(2)}MB)`,
-                  runtime,
-                );
-                replyLogger.info(
-                  {
-                    connectionId,
-                    correlationId,
-                    to: msg.from,
-                    from: msg.to,
-                    text: index === 0 ? (replyResult.text ?? null) : null,
-                    mediaUrl,
-                    mediaSizeBytes: media.buffer.length,
-                    mediaKind: media.kind,
-                    durationMs: Date.now() - replyStarted,
-                  },
-                  "auto-reply sent (media)",
-                );
-              } catch (err) {
-                console.error(
-                  danger(
-                    `Failed sending web media to ${msg.from}: ${String(err)}`,
-                  ),
-                );
-                if (index === 0 && replyResult.text) {
-                  console.log(
-                    `⚠️  Media skipped; sent text-only to ${msg.from}`,
-                  );
-                  await msg.reply(replyResult.text || "");
-                }
-              }
-            }
-          } else if (replyResult.text) {
-            await msg.reply(replyResult.text);
-          }
-
-          const durationMs = Date.now() - replyStarted;
-          const hasMedia = mediaList.length > 0;
           if (isVerbose()) {
             console.log(
               success(
-                `↩️  Auto-replied to ${msg.from} (web, ${replyResult.text?.length ?? 0} chars${hasMedia ? ", media" : ""}, ${formatDuration(durationMs)})`,
+                `↩️  Auto-replied to ${msg.from} (web${replyResult.mediaUrl || replyResult.mediaUrls?.length ? ", media" : ""})`,
               ),
             );
           } else {
             console.log(
               success(
-                `↩️  ${replyResult.text ?? "<media>"}${hasMedia ? " (media)" : ""}`,
+                `↩️  ${replyResult.text ?? "<media>"}${replyResult.mediaUrl || replyResult.mediaUrls?.length ? " (media)" : ""}`,
               ),
             );
           }
-          replyLogger.info(
-            {
-              connectionId,
-              correlationId,
-              to: msg.from,
-              from: msg.to,
-              text: replyResult.text ?? null,
-              mediaUrl: mediaList[0] ?? null,
-              durationMs,
-            },
-            "auto-reply sent",
-          );
         } catch (err) {
           console.error(
             danger(
@@ -261,6 +408,7 @@ export async function monitorWebProvider(
 
     const closeListener = async () => {
       if (heartbeat) clearInterval(heartbeat);
+      if (replyHeartbeatTimer) clearInterval(replyHeartbeatTimer);
       try {
         await listener.close();
       } catch (err) {
@@ -285,6 +433,135 @@ export async function monitorWebProvider(
       }, heartbeatSeconds * 1000);
     }
 
+    const runReplyHeartbeat = async () => {
+      if (!replyHeartbeatMinutes) return;
+      const tickStart = Date.now();
+      if (!lastInboundMsg) {
+        heartbeatLogger.info(
+          {
+            connectionId,
+            reason: "no-recent-inbound",
+            durationMs: Date.now() - tickStart,
+          },
+          "reply heartbeat skipped",
+        );
+        console.log(success("heartbeat: skipped (no recent inbound)"));
+        return;
+      }
+
+      try {
+        if (isVerbose()) {
+          heartbeatLogger.info(
+            {
+              connectionId,
+              to: lastInboundMsg.from,
+              intervalMinutes: replyHeartbeatMinutes,
+            },
+            "reply heartbeat start",
+          );
+        }
+        const replyResult = await (replyResolver ?? getReplyFromConfig)(
+          {
+            Body: HEARTBEAT_PROMPT,
+            From: lastInboundMsg.from,
+            To: lastInboundMsg.to,
+            MessageSid: undefined,
+            MediaPath: undefined,
+            MediaUrl: undefined,
+            MediaType: undefined,
+          },
+          {
+            onReplyStart: lastInboundMsg.sendComposing,
+          },
+        );
+
+        if (
+          !replyResult ||
+          (!replyResult.text &&
+            !replyResult.mediaUrl &&
+            !replyResult.mediaUrls?.length)
+        ) {
+          heartbeatLogger.info(
+            {
+              connectionId,
+              durationMs: Date.now() - tickStart,
+              reason: "empty-reply",
+            },
+            "reply heartbeat skipped",
+          );
+          console.log(success("heartbeat: ok (empty reply)"));
+          return;
+        }
+
+        const stripped = stripHeartbeatToken(replyResult.text);
+        const hasMedia =
+          (replyResult.mediaUrl ?? replyResult.mediaUrls?.length ?? 0) > 0;
+        if (stripped.shouldSkip && !hasMedia) {
+          heartbeatLogger.info(
+            {
+              connectionId,
+              durationMs: Date.now() - tickStart,
+              reason: "heartbeat-token",
+              rawLength: replyResult.text?.length ?? 0,
+            },
+            "reply heartbeat skipped",
+          );
+          console.log(success("heartbeat: ok (HEARTBEAT_OK)"));
+          return;
+        }
+
+        const cleanedReply: ReplyPayload = {
+          ...replyResult,
+          text: stripped.text,
+        };
+
+        await deliverWebReply({
+          replyResult: cleanedReply,
+          msg: lastInboundMsg,
+          maxMediaBytes,
+          replyLogger,
+          runtime,
+          connectionId,
+        });
+
+        const durationMs = Date.now() - tickStart;
+        const summary = `heartbeat: alert sent (${formatDuration(durationMs)})`;
+        console.log(summary);
+        heartbeatLogger.info(
+          {
+            connectionId,
+            durationMs,
+            hasMedia,
+            chars: stripped.text?.length ?? 0,
+          },
+          "reply heartbeat sent",
+        );
+      } catch (err) {
+        const durationMs = Date.now() - tickStart;
+        heartbeatLogger.warn(
+          {
+            connectionId,
+            error: String(err),
+            durationMs,
+          },
+          "reply heartbeat failed",
+        );
+        console.log(
+          danger(`heartbeat: failed (${formatDuration(durationMs)})`),
+        );
+      }
+    };
+
+    if (replyHeartbeatMinutes && !replyHeartbeatTimer) {
+      const intervalMs = replyHeartbeatMinutes * 60_000;
+      replyHeartbeatTimer = setInterval(() => {
+        void runReplyHeartbeat();
+      }, intervalMs);
+      if (tuning.replyHeartbeatNow) {
+        void runReplyHeartbeat();
+      }
+    }
+
     logInfo(
       "📡 Listening for personal WhatsApp Web inbound messages. Leave this running; Ctrl+C to stop.",
       runtime,