diff --git a/docs/architecture/overview.md b/docs/architecture/overview.md
index b9ef0fa..f566018 100644
--- a/docs/architecture/overview.md
+++ b/docs/architecture/overview.md
@@ -53,6 +53,9 @@ surfaces; Eve/CultUI is the presentation contract.
   provider at `cultmesh://voidbot.local/eve/providers/voidbot.swarm`, backed by
   `.voidbot/status/cultmesh/voidbot-swarm-state.cc`; any generated browser page
   is only a debug lowering of that provider surface.
+- The local orchestrator pulse publishes `voidbot.cultnet-rudp-stack-health`
+  over `cultnet.transport.rudp.v0` to Idunn after each pulse. The operations
+  watchdog remains a compatibility report, not the daemon liveness owner.
 
 ## Upgrade path
 
diff --git a/docs/architecture/voidbot-verse-service-contract.md b/docs/architecture/voidbot-verse-service-contract.md
index c074fc1..c47d08e 100644
--- a/docs/architecture/voidbot-verse-service-contract.md
+++ b/docs/architecture/voidbot-verse-service-contract.md
@@ -49,6 +49,12 @@ VoidBot surfaces as they become first-class Verse nodes.
 - Swarm presentation witness:
   `.voidbot/status/cultmesh/voidbot-swarm-state.cc`, written by
   `scripts/render-voidbot-swarm-dashboard.mjs`.
+- Idunn health witness:
+  `scripts/run-gamecult-orchestrator.ps1` publishes
+  `voidbot.cultnet-rudp-stack-health` over `cultnet.transport.rudp.v0` after
+  each orchestrator pulse. The health record reports the pulse summary for the
+  local stack; `scripts/check-voidbot-operations.ps1` remains a compatibility
+  probe and watchdog report, not the daemon liveness owner.
 - JSON status packets under `.voidbot/status/` are debug/export surfaces unless
   a specific runner owns them as command input. They are not durable canonical
   state.
@@ -127,7 +133,9 @@ Eve binding and the underlying typed state owners.
 
 1. Keep the current `voidbot.swarm` CultMesh publication healthy and discoverable
    through Odin.
-2. Add `.cc` witness/export documents for any remaining JSON-only command or
+2. Keep `voidbot.cultnet-rudp-stack-health` publishing from the orchestrator
+   pulse so Idunn consumes daemon-owned health before compatibility probes.
+3. Add `.cc` witness/export documents for any remaining JSON-only command or
    status surfaces before treating them as Verse state.
 3. Move Persona and repo Face `.cc` inspection to Huginn-owned tooling while
    leaving VoidBot as the Discord compatibility carrier.
diff --git a/scripts/publish-idunn-rudp-health.cjs b/scripts/publish-idunn-rudp-health.cjs
new file mode 100644
index 0000000..9d45cb1
--- /dev/null
+++ b/scripts/publish-idunn-rudp-health.cjs
@@ -0,0 +1,280 @@
+"use strict";
+
+const dgram = require("dgram");
+const path = require("path");
+
+const cultLibPackages = path.resolve(__dirname, "..", "..", "CultLib", "packages");
+process.env.NODE_PATH = [cultLibPackages, process.env.NODE_PATH || ""].filter(Boolean).join(path.delimiter);
+require("module").Module._initPaths();
+
+const {
+  CultNetRudpSession,
+  decodeRudpPacket,
+  encodeCultNetMessageForWire,
+  encodeRudpPacket,
+} = require("cultnet-ts");
+
+const { encode } = require(path.resolve(__dirname, "..", "..", "CultLib", "node_modules", "@msgpack", "msgpack"));
+
+const CULTNET_RUDP_PROTOCOL_ID = "cultnet.transport.rudp.v0";
+const IDUNN_HEALTH_RUDP_CONNECTION_ID = 0x1d0d0001;
+
+async function main() {
+  const options = parseArgs(process.argv.slice(2));
+  const endpoint = parseEndpoint(options.endpoint || process.env.VOIDBOT_IDUNN_RUDP_HEALTH || "127.0.0.1:17870");
+  const daemonId = options.daemon || process.env.VOIDBOT_IDUNN_DAEMON || "voidbot";
+  const healthContract = options.contract || process.env.VOIDBOT_IDUNN_HEALTH_CONTRACT || "voidbot.cultnet-rudp-stack-health";
+  const state = options.state || "healthy";
+  const observedAt = options.observedAt || new Date().toISOString();
+  const detail = options.detail || "VoidBot orchestrator pulse completed.";
+
+  await publishIdunnRudpHealth({ endpoint, daemonId, healthContract }, { state, detail, observedAt });
+}
+
+async function publishIdunnRudpHealth(publisher, health) {
+  const socket = dgram.createSocket(endpointFamily(publisher.endpoint.host));
+  await bindSocket(socket, publisher.endpoint);
+  const receiver = createPacketReceiver(socket);
+  const session = new CultNetRudpSession({
+    connectionId: IDUNN_HEALTH_RUDP_CONNECTION_ID,
+    initialSequence: 1,
+    resendDelayMs: 100,
+  });
+
+  try {
+    const connect = session.createConnect(Date.now(), new Uint8Array());
+    await receiveAccept(receiver, session, publisher.endpoint, connect, 5000);
+
+    const record = {
+      daemonId: publisher.daemonId,
+      state: health.state,
+      detail: health.detail,
+      observedAt: health.observedAt,
+      healthContract: publisher.healthContract,
+      publicationSource: "daemon-published",
+      transport: CULTNET_RUDP_PROTOCOL_ID,
+    };
+    const payload = encode([
+      record.daemonId,
+      record.state,
+      record.detail,
+      record.observedAt,
+      record.healthContract,
+      record.publicationSource,
+      record.transport,
+    ]);
+    const message = {
+      schemaVersion: "cultnet.document_put_raw.v0",
+      messageId: `voidbot-health:${publisher.daemonId}:${record.observedAt.replace(/[:.]/g, "-")}`,
+      document: {
+        schemaId: "idunn.daemon_health",
+        recordKey: publisher.daemonId,
+        storedAt: record.observedAt,
+        payloadEncoding: "messagepack",
+        payload,
+        sourceRuntimeId: "voidbot-orchestrator",
+        sourceRole: "daemon-health-publisher",
+        tags: [CULTNET_RUDP_PROTOCOL_ID],
+      },
+    };
+    const wirePayload = encode(encodeCultNetMessageForWire(message, "cultnet.schema.v0"));
+    const dataPackets = session.sendMany("schema", wirePayload, {
+      reliable: true,
+      ordered: true,
+      nowMs: Date.now(),
+    });
+    const ack = receiveUntil(receiver, session, publisher.endpoint, (packet) => packet.packetType === "ack", 500, "ack")
+      .catch(() => undefined);
+    for (const packet of dataPackets) {
+      await sendPacket(socket, publisher.endpoint, packet);
+    }
+    await ack;
+  } finally {
+    receiver.close();
+    socket.close();
+  }
+}
+
+async function receiveAccept(receiver, session, endpoint, connectPacket, timeoutMs) {
+  const deadline = Date.now() + timeoutMs;
+  let nextConnectMs = 0;
+  while (Date.now() < deadline) {
+    const now = Date.now();
+    if (now >= nextConnectMs) {
+      await sendPacket(receiver.socket, endpoint, connectPacket);
+      nextConnectMs = now + 100;
+    }
+    try {
+      const packet = await receiver.next(Math.min(100, deadline - now), "accept");
+      const result = session.receive(packet, Date.now());
+      if (result.reply) {
+        throw new Error("VoidBot RUDP health publisher received an unexpected reply-required packet.");
+      }
+      if (packet.packetType === "accept") return;
+    } catch (error) {
+      if (error.code !== "ETIMEDOUT") throw error;
+    }
+  }
+  throw new Error(`timed out waiting for Idunn RUDP accept response after ${timeoutMs}ms`);
+}
+
+async function bindSocket(socket, endpoint) {
+  await new Promise((resolve, reject) => {
+    socket.once("error", reject);
+    socket.bind(0, endpoint.host.includes(":") ? "::" : "0.0.0.0", () => {
+      socket.off("error", reject);
+      resolve();
+    });
+  });
+}
+
+function parseArgs(args) {
+  const parsed = {};
+  for (let index = 0; index < args.length; index += 1) {
+    const arg = args[index];
+    switch (arg) {
+      case "--endpoint":
+        parsed.endpoint = args[++index];
+        break;
+      case "--daemon":
+        parsed.daemon = args[++index];
+        break;
+      case "--contract":
+        parsed.contract = args[++index];
+        break;
+      case "--state":
+        parsed.state = args[++index];
+        break;
+      case "--detail":
+        parsed.detail = args[++index];
+        break;
+      case "--observed-at":
+        parsed.observedAt = args[++index];
+        break;
+      default:
+        throw new Error(`Unknown argument: ${arg}`);
+    }
+  }
+  return parsed;
+}
+
+function parseEndpoint(value) {
+  const text = String(value || "").trim();
+  const ipv6 = text.match(/^\[([^\]]+)\]:(\d+)$/);
+  if (ipv6) return { host: ipv6[1], port: parsePort(ipv6[2]) };
+  const index = text.lastIndexOf(":");
+  if (index <= 0) {
+    throw new Error(`Idunn RUDP endpoint must be host:port, got "${value}".`);
+  }
+  return { host: text.slice(0, index), port: parsePort(text.slice(index + 1)) };
+}
+
+function parsePort(value) {
+  const port = Number(value);
+  if (!Number.isInteger(port) || port <= 0 || port > 65535) {
+    throw new Error(`Idunn RUDP endpoint port is invalid: ${value}`);
+  }
+  return port;
+}
+
+function endpointFamily(host) {
+  return host.includes(":") ? "udp6" : "udp4";
+}
+
+async function receiveUntil(receiver, session, endpoint, predicate, timeoutMs, label) {
+  const deadline = Date.now() + timeoutMs;
+  while (Date.now() < deadline) {
+    try {
+      const packet = await receiver.next(Math.min(100, deadline - Date.now()), label);
+      const result = session.receive(packet, Date.now());
+      if (result.reply) {
+        throw new Error("VoidBot RUDP health publisher received an unexpected reply-required packet.");
+      }
+      if (predicate(packet)) return;
+    } catch (error) {
+      if (error.code !== "ETIMEDOUT") throw error;
+    }
+    for (const packet of session.dueResends(Date.now())) {
+      await sendPacket(receiver.socket, endpoint, packet);
+    }
+  }
+  throw new Error(`timed out waiting for Idunn RUDP ${label} response after ${timeoutMs}ms`);
+}
+
+function createPacketReceiver(socket) {
+  const packets = [];
+  const waiters = [];
+  const errors = [];
+
+  const resolveNext = () => {
+    while (waiters.length > 0 && (packets.length > 0 || errors.length > 0)) {
+      const waiter = waiters.shift();
+      clearTimeout(waiter.timer);
+      if (errors.length > 0) waiter.reject(errors.shift());
+      else waiter.resolve(packets.shift());
+    }
+  };
+  const onMessage = (wire) => {
+    try {
+      packets.push(decodeRudpPacket(wire));
+    } catch (error) {
+      errors.push(error);
+    }
+    resolveNext();
+  };
+  const onError = (error) => {
+    errors.push(error);
+    resolveNext();
+  };
+
+  socket.on("message", onMessage);
+  socket.on("error", onError);
+
+  return {
+    socket,
+    next(timeoutMs, label = "packet") {
+      if (packets.length > 0) return Promise.resolve(packets.shift());
+      if (errors.length > 0) return Promise.reject(errors.shift());
+      return new Promise((resolve, reject) => {
+        const waiter = {
+          resolve,
+          reject,
+          timer: setTimeout(() => {
+            const index = waiters.indexOf(waiter);
+            if (index >= 0) waiters.splice(index, 1);
+            const error = new Error(`timed out waiting for Idunn RUDP ${label}`);
+            error.code = "ETIMEDOUT";
+            reject(error);
+          }, Math.max(1, timeoutMs)),
+        };
+        waiters.push(waiter);
+      });
+    },
+    close() {
+      socket.off("message", onMessage);
+      socket.off("error", onError);
+      while (waiters.length > 0) {
+        const waiter = waiters.shift();
+        clearTimeout(waiter.timer);
+        const error = new Error("VoidBot RUDP health publisher closed.");
+        error.code = "ECLOSED";
+        waiter.reject(error);
+      }
+    },
+  };
+}
+
+async function sendPacket(socket, endpoint, packet) {
+  const wire = encodeRudpPacket(packet);
+  await new Promise((resolve, reject) => {
+    socket.send(wire, endpoint.port, endpoint.host, (error) => {
+      if (error) reject(error);
+      else resolve();
+    });
+  });
+}
+
+main().catch((error) => {
+  console.error(error?.stack || String(error));
+  process.exit(1);
+});
diff --git a/scripts/run-gamecult-orchestrator.ps1 b/scripts/run-gamecult-orchestrator.ps1
index 10651f3..f8349c7 100644
--- a/scripts/run-gamecult-orchestrator.ps1
+++ b/scripts/run-gamecult-orchestrator.ps1
@@ -104,6 +104,36 @@ function Join-WindowsArguments {
   return (($Arguments | ForEach-Object { ConvertTo-WindowsArgument -Value ([string]$_) }) -join " ")
 }
 
+function Publish-IdunnRudpHealth {
+  param(
+    [Parameter(Mandatory = $true)] $Summary
+  )
+
+  $publisher = Join-Path $PSScriptRoot "publish-idunn-rudp-health.cjs"
+  if (-not (Test-Path -LiteralPath $publisher)) {
+    return
+  }
+
+  $endpoint = if ($env:VOIDBOT_IDUNN_RUDP_HEALTH) { $env:VOIDBOT_IDUNN_RUDP_HEALTH } else { "127.0.0.1:17870" }
+  $state = if ($Summary.ok) { "healthy" } else { "failed" }
+  $detail = "VoidBot orchestrator pulse ran $($Summary.ranCount) organ(s) in $($Summary.durationSeconds)s; ok=$($Summary.ok)"
+  try {
+    $nodeExe = (Get-Command node.exe -ErrorAction Stop).Source
+    $output = & $nodeExe $publisher `
+      --endpoint $endpoint `
+      --daemon "voidbot" `
+      --contract "voidbot.cultnet-rudp-stack-health" `
+      --state $state `
+      --detail $detail `
+      --observed-at $Summary.finishedAt 2>&1
+    if ($LASTEXITCODE -ne 0) {
+      throw "publisher exited with code $LASTEXITCODE`: $($output -join [Environment]::NewLine)"
+    }
+  } catch {
+    $message = "[$([DateTime]::UtcNow.ToString("o"))] Idunn RUDP health publish failed: $($_.Exception.Message)"
+    Add-Content -LiteralPath (Join-Path $logDir "idunn-rudp-health.log") -Encoding UTF8 -Value $message
+  }
+}
 function Get-OrganState {
   param($State, [string] $Id)
   $property = $State.organs.PSObject.Properties[$Id]
@@ -403,6 +433,7 @@ try {
   }
   Write-JsonFile -Path (Join-Path $statusDir "gamecult-orchestrator-last-run.json") -Data $summary
   Write-JsonFile -Path $statePath -Data $state
+  Publish-IdunnRudpHealth -Summary $summary
 
   if (-not $summary.ok) {
     exit 1