--- a/rts/Game/WebbarBrowser.h
+++ b/rts/Game/WebbarBrowser.h
@@ -43,6 +43,7 @@
 
 #include "WebbarWeapons.h"
 #include "WebbarShields.h"
+#include "WebbarCloak.h"
 
 static bool WebbarSupports(const UnitDef* def)
 {
@@ -78,7 +79,7 @@
 	if (!catalogSent) {
 		catalogSent = true;
 		if (std::getenv("WEBBAR_NETWORK") != nullptr) { static WebbarNetworkResult result; }
-		MAIN_THREAD_EM_ASM({ if (Module['webbarProtocol']) Module['webbarProtocol'](8, 3 /* area restore | shield state */); });
+		MAIN_THREAD_EM_ASM({ if (Module['webbarProtocol']) Module['webbarProtocol'](8, 7 /* area restore | shield state | owner cloak */); });
 		MAIN_THREAD_EM_ASM({
 			if (Module['webbarIdentity']) Module['webbarIdentity']($0, $1, $2, $3);
 		}, gu->myPlayerNum, gu->myTeam, gu->myAllyTeam, int(gu->spectating));
@@ -152,6 +153,7 @@
 		if (Module['webbarUnitState']) Module['webbarUnitState'](HEAPU8.slice($0, $0 + $1).buffer);
 	}, packet.data(), packet.size());
 	PublishWebbarShields();
+	PublishWebbarCloak();
 	PublishWebbarWorld();
 }
 
--- /dev/null
+++ b/rts/Game/WebbarCloak.h
@@ -0,0 +1,43 @@
+/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
+#pragma once
+
+#include "Lua/LuaRulesParams.h"
+
+// Owner-only, read-only presentation. BAR owns cloak requests, resource use,
+// proximity checks and recloak delays. Never infer a reason by scanning enemies.
+static void PublishWebbarCloak()
+{
+	struct Record {
+		uint32_t unit, flags;
+		float idleCost, movingCost, speed, decloakDistance;
+	};
+	static_assert(sizeof(Record) == 24);
+	std::vector<Record> records;
+	uint32_t dropped = 0;
+	for (const CUnit* unit: unitHandler.GetActiveUnits()) {
+		if (unit->isDead || unit->team != gu->myTeam) continue;
+		const auto* def = unit->unitDef;
+		if (!def->canCloak && !unit->isCloaked && !unit->stealth && !unit->sonarStealth && !def->canResurrect && unit->stockpileWeapon == nullptr) continue;
+		if (records.size() >= 4096) { ++dropped; continue; }
+		const auto rule = [&](const char* name) {
+			const auto it = unit->modParams.find(name);
+			if (it == unit->modParams.end() || !(it->second.los & LuaRulesParams::RULESPARAMLOS_PRIVATE_MASK)) return -1.0f;
+			const float* value = std::get_if<float>(&it->second.value);
+			return value != nullptr && std::isfinite(*value) ? *value : -1.0f;
+		};
+		const float requested = rule("wantcloak");
+		const uint32_t flags = uint32_t(def->canCloak) | (uint32_t(requested >= 0) << 1) | (uint32_t(requested == 1) << 2) |
+			(uint32_t(unit->isCloaked) << 3) | (uint32_t(unit->wantCloak) << 4) | (uint32_t(rule("cannotcloak") == 1) << 5) |
+			(uint32_t(rule("areacloaked") == 1) << 6) | (uint32_t(unit->IsStunned()) << 7) | (uint32_t(unit->beingBuilt) << 8) |
+			(uint32_t(unit->stealth) << 9) | (uint32_t(unit->sonarStealth) << 10);
+		records.push_back({uint32_t(unit->id), flags, std::max(0.0f, def->cloakCost), std::max(0.0f, def->cloakCostMoving),
+			unit->speed.w, std::max(0.0f, unit->decloakDistance)});
+	}
+	const uint32_t header[] = {0x31434257, uint32_t(gs->frameNum), uint32_t(records.size()), dropped};
+	std::vector<uint8_t> packet(sizeof(header) + records.size() * sizeof(Record));
+	std::memcpy(packet.data(), header, sizeof(header));
+	if (!records.empty()) std::memcpy(packet.data() + sizeof(header), records.data(), records.size() * sizeof(Record));
+	MAIN_THREAD_EM_ASM({
+		if (Module['webbarCloak']) Module['webbarCloak'](HEAPU8.slice($0, $0 + $1).buffer);
+	}, packet.data(), packet.size());
+}