diff --git a/CHANGELOG.md b/CHANGELOG.md
index bfae6b3df..cb5a9212e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,7 @@
 - Onboarding: shared wizard engine powering CLI + macOS via gateway wizard RPC.
 - Config: expose schema + UI hints for generic config forms (Web UI + future clients).
 - Skills: add blogwatcher skill for RSS/Atom monitoring — thanks @Hyaxia.
+- Discord: emit system events for reaction add/remove with per-guild reaction notifications (off|own|all|allowlist) — thanks @thewilloftheshadow.
 
 ### Fixes
 - Auto-reply: drop final payloads when block streaming to avoid duplicate Discord sends.
diff --git a/apps/macos/Sources/Clawdis/ConnectionsSettings.swift b/apps/macos/Sources/Clawdis/ConnectionsSettings.swift
index d94c471eb..5d6b5f95f 100644
--- a/apps/macos/Sources/Clawdis/ConnectionsSettings.swift
+++ b/apps/macos/Sources/Clawdis/ConnectionsSettings.swift
@@ -515,6 +515,17 @@ struct ConnectionsSettings: View {
                                         .labelsHidden()
                                         .toggleStyle(.checkbox)
                                 }
+                                GridRow {
+                                    self.gridLabel("Reaction notifications")
+                                    Picker("", selection: $guild.reactionNotifications) {
+                                        Text("Off").tag("off")
+                                        Text("Own").tag("own")
+                                        Text("All").tag("all")
+                                        Text("Allowlist").tag("allowlist")
+                                    }
+                                    .labelsHidden()
+                                    .pickerStyle(.segmented)
+                                }
                                 GridRow {
                                     self.gridLabel("Users allowlist")
                                     TextField("123456789, username#1234", text: $guild.users)
diff --git a/apps/macos/Sources/Clawdis/ConnectionsStore.swift b/apps/macos/Sources/Clawdis/ConnectionsStore.swift
index 27d66b82f..feb4239c5 100644
--- a/apps/macos/Sources/Clawdis/ConnectionsStore.swift
+++ b/apps/macos/Sources/Clawdis/ConnectionsStore.swift
@@ -162,6 +162,7 @@ struct DiscordGuildForm: Identifiable {
     var key: String
     var slug: String
     var requireMention: Bool
+    var reactionNotifications: String
     var users: String
     var channels: [DiscordGuildChannelForm]
 
@@ -169,12 +170,14 @@ struct DiscordGuildForm: Identifiable {
         key: String = "",
         slug: String = "",
         requireMention: Bool = false,
+        reactionNotifications: String = "allowlist",
         users: String = "",
         channels: [DiscordGuildChannelForm] = []
     ) {
         self.key = key
         self.slug = slug
         self.requireMention = requireMention
+        self.reactionNotifications = reactionNotifications
         self.users = users
         self.channels = channels
     }
@@ -491,6 +494,10 @@ final class ConnectionsStore {
                         let entry = value.dictionaryValue ?? [:]
                         let slug = entry["slug"]?.stringValue ?? ""
                         let requireMention = entry["requireMention"]?.boolValue ?? false
+                        let reactionModeRaw = entry["reactionNotifications"]?.stringValue ?? ""
+                        let reactionNotifications = ["off", "own", "all", "allowlist"].contains(reactionModeRaw)
+                            ? reactionModeRaw
+                            : "allowlist"
                         let users = entry["users"]?.arrayValue?
                             .compactMap { item -> String? in
                                 if let str = item.stringValue { return str }
@@ -518,6 +525,7 @@ final class ConnectionsStore {
                             key: key,
                             slug: slug,
                             requireMention: requireMention,
+                            reactionNotifications: reactionNotifications,
                             users: users,
                             channels: channels)
                     }
@@ -794,6 +802,9 @@ final class ConnectionsStore {
             let slug = entry.slug.trimmingCharacters(in: .whitespacesAndNewlines)
             if !slug.isEmpty { payload["slug"] = slug }
             if entry.requireMention { payload["requireMention"] = true }
+            if ["off", "own", "all", "allowlist"].contains(entry.reactionNotifications) {
+                payload["reactionNotifications"] = entry.reactionNotifications
+            }
             let users = entry.users
                 .split(separator: ",")
                 .map { $0.trimmingCharacters(in: .whitespacesAndNewlines) }
diff --git a/docs/configuration.md b/docs/configuration.md
index 644b4b5b3..a8a0a48d7 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -266,6 +266,7 @@ Configure the Discord bot by setting the bot token and optional gating:
       "123456789012345678": {               // guild id (preferred) or slug
         slug: "friends-of-clawd",
         requireMention: false,              // per-guild default
+        reactionNotifications: "allowlist", // off | own | all | allowlist
         users: ["987654321098765432"],      // optional per-guild user allowlist
         channels: {
           general: { allow: true },
diff --git a/docs/discord.md b/docs/discord.md
index 7080dedcf..b78276609 100644
--- a/docs/discord.md
+++ b/docs/discord.md
@@ -86,6 +86,7 @@ Note: Guild context `[from:]` lines include `author.tag` + `id` to make ping-rea
       "123456789012345678": {
         slug: "friends-of-clawd",
         requireMention: false,
+        reactionNotifications: "allowlist",
         users: ["987654321098765432", "steipete"],
         channels: {
           general: { allow: true },
@@ -107,6 +108,7 @@ Note: Guild context `[from:]` lines include `author.tag` + `id` to make ping-rea
 - `guilds.<id>.users`: optional per-guild user allowlist (ids or names).
 - `guilds.<id>.channels`: channel rules (keys are channel slugs or ids).
 - `guilds.<id>.requireMention`: per-guild mention requirement (overridable per channel).
+- `guilds.<id>.reactionNotifications`: reaction system event mode (`off`, `own`, `all`, `allowlist`).
 - `slashCommand`: optional config for user-installed slash commands (ephemeral responses).
 - `mediaMaxMb`: clamp inbound media saved to disk.
 - `historyLimit`: number of recent guild messages to include as context when replying to a mention (default 20, `0` disables).
@@ -117,6 +119,8 @@ Note: Guild context `[from:]` lines include `author.tag` + `id` to make ping-rea
   - `roles` (role add/remove, default `false`)
   - `moderation` (timeout/kick/ban, default `false`)
 
+Reaction notifications use `guilds.<id>.reactionNotifications`; `allowlist` checks `guilds.<id>.users`, while `all` ignores that allowlist.
+
 ### Tool action defaults
 
 | Action group | Default | Notes |
diff --git a/src/config/config.ts b/src/config/config.ts
index 99020540d..d798598de 100644
--- a/src/config/config.ts
+++ b/src/config/config.ts
@@ -203,9 +203,17 @@ export type DiscordGuildChannelConfig = {
   requireMention?: boolean;
 };
 
+export type DiscordReactionNotificationMode =
+  | "off"
+  | "own"
+  | "all"
+  | "allowlist";
+
 export type DiscordGuildEntry = {
   slug?: string;
   requireMention?: boolean;
+  /** Reaction notification mode (off|own|all|allowlist). Default: own. */
+  reactionNotifications?: DiscordReactionNotificationMode;
   users?: Array<string | number>;
   channels?: Record<string, DiscordGuildChannelConfig>;
 };
@@ -1153,6 +1161,9 @@ export const ClawdisSchema = z.object({
             .object({
               slug: z.string().optional(),
               requireMention: z.boolean().optional(),
+              reactionNotifications: z
+                .enum(["off", "own", "all", "allowlist"])
+                .optional(),
               users: z.array(z.union([z.string(), z.number()])).optional(),
               channels: z
                 .record(
diff --git a/src/discord/monitor.ts b/src/discord/monitor.ts
index 5f3f0f64a..8ae637219 100644
--- a/src/discord/monitor.ts
+++ b/src/discord/monitor.ts
@@ -1,12 +1,20 @@
 import {
   ApplicationCommandOptionType,
+  type Attachment,
   ChannelType,
+  type ChatInputCommandInteraction,
   Client,
   type CommandInteractionOption,
   Events,
   GatewayIntentBits,
+  type Guild,
   type Message,
+  type MessageReaction,
+  type PartialMessage,
+  type PartialMessageReaction,
   Partials,
+  type PartialUser,
+  type User,
 } from "discord.js";
 
 import { chunkText, resolveTextChunkLimit } from "../auto-reply/chunk.js";
@@ -21,6 +29,7 @@ import type {
 import { loadConfig } from "../config/config.js";
 import { resolveStorePath, updateLastRoute } from "../config/sessions.js";
 import { danger, logVerbose, shouldLogVerbose, warn } from "../globals.js";
+import { enqueueSystemEvent } from "../infra/system-events.js";
 import { getChildLogger } from "../logging.js";
 import { detectMime } from "../media/mime.js";
 import { saveMediaBuffer } from "../media/store.js";
@@ -61,6 +70,7 @@ export type DiscordGuildEntryResolved = {
   id?: string;
   slug?: string;
   requireMention?: boolean;
+  reactionNotifications?: "off" | "own" | "all" | "allowlist";
   users?: Array<string | number>;
   channels?: Record<string, { allow?: boolean; requireMention?: boolean }>;
 };
@@ -149,10 +159,17 @@ export async function monitorDiscordProvider(opts: MonitorDiscordOpts = {}) {
     intents: [
       GatewayIntentBits.Guilds,
       GatewayIntentBits.GuildMessages,
+      GatewayIntentBits.GuildMessageReactions,
       GatewayIntentBits.MessageContent,
       GatewayIntentBits.DirectMessages,
+      GatewayIntentBits.DirectMessageReactions,
+    ],
+    partials: [
+      Partials.Channel,
+      Partials.Message,
+      Partials.Reaction,
+      Partials.User,
     ],
-    partials: [Partials.Channel],
   });
 
   const logger = getChildLogger({ module: "discord-auto-reply" });
@@ -503,6 +520,99 @@ export async function monitorDiscordProvider(opts: MonitorDiscordOpts = {}) {
     }
   });
 
+  const handleReactionEvent = async (
+    reaction: MessageReaction | PartialMessageReaction,
+    user: User | PartialUser,
+    action: "added" | "removed",
+  ) => {
+    try {
+      if (!user || user.bot) return;
+      const resolvedReaction = reaction.partial
+        ? await reaction.fetch()
+        : reaction;
+      const message = (resolvedReaction.message as Message | PartialMessage)
+        .partial
+        ? await resolvedReaction.message.fetch()
+        : resolvedReaction.message;
+      const guild = message.guild;
+      if (!guild) return;
+      const guildInfo = resolveDiscordGuildEntry({
+        guild,
+        guildEntries,
+      });
+      if (guildEntries && Object.keys(guildEntries).length > 0 && !guildInfo) {
+        return;
+      }
+      const channelName =
+        "name" in message.channel
+          ? (message.channel.name ?? undefined)
+          : undefined;
+      const channelSlug = channelName ? normalizeDiscordSlug(channelName) : "";
+      const channelConfig = resolveDiscordChannelConfig({
+        guildInfo,
+        channelId: message.channelId,
+        channelName,
+        channelSlug,
+      });
+      if (channelConfig?.allowed === false) return;
+
+      const botId = client.user?.id;
+      if (botId && user.id === botId) return;
+
+      const reactionMode = guildInfo?.reactionNotifications ?? "allowlist";
+      if (reactionMode === "off") return;
+      if (reactionMode === "own") {
+        const authorId = message.author?.id;
+        if (!botId || authorId !== botId) return;
+      }
+      if (reactionMode === "allowlist") {
+        const userAllow = guildInfo?.users;
+        if (!Array.isArray(userAllow) || userAllow.length === 0) return;
+        const users = normalizeDiscordAllowList(userAllow, [
+          "discord:",
+          "user:",
+        ]);
+        const userOk =
+          !!users &&
+          allowListMatches(users, {
+            id: user.id,
+            name: user.username,
+            tag: user.tag,
+          });
+        if (!userOk) return;
+      }
+
+      const emojiLabel = formatDiscordReactionEmoji(resolvedReaction);
+      const actorLabel = user.tag ?? user.username ?? user.id;
+      const guildSlug =
+        guildInfo?.slug ||
+        (guild.name ? normalizeDiscordSlug(guild.name) : guild.id);
+      const channelLabel = channelSlug
+        ? `#${channelSlug}`
+        : channelName
+          ? `#${normalizeDiscordSlug(channelName)}`
+          : `#${message.channelId}`;
+      const authorLabel = message.author?.tag ?? message.author?.username;
+      const baseText = `Discord reaction ${action}: ${emojiLabel} by ${actorLabel} on ${guildSlug} ${channelLabel} msg ${message.id}`;
+      const text = authorLabel ? `${baseText} from ${authorLabel}` : baseText;
+      enqueueSystemEvent(text, {
+        contextKey: `discord:reaction:${action}:${message.id}:${user.id}:${emojiLabel}`,
+      });
+    } catch (err) {
+      runtime.error?.(
+        danger(`discord reaction handler failed: ${String(err)}`),
+      );
+    }
+  };
+
+  client.on(Events.MessageReactionAdd, async (reaction, user) => {
+    await handleReactionEvent(reaction, user, "added");
+  });
+
+  client.on(Events.MessageReactionRemove, async (reaction, user) => {
+    await handleReactionEvent(reaction, user, "removed");
+  });
+
   client.on(Events.InteractionCreate, async (interaction) => {
     try {
       if (!slashCommand.enabled) return;
@@ -698,7 +808,7 @@ export async function monitorDiscordProvider(opts: MonitorDiscordOpts = {}) {
 }
 
 async function resolveMedia(
-  message: import("discord.js").Message,
+  message: Message,
   maxBytes: number,
 ): Promise<DiscordMediaInfo | null> {
   const attachment = message.attachments.first();
@@ -723,7 +833,7 @@ async function resolveMedia(
   };
 }
 
-function inferPlaceholder(attachment: import("discord.js").Attachment): string {
+function inferPlaceholder(attachment: Attachment): string {
   const mime = attachment.contentType ?? "";
   if (mime.startsWith("image/")) return "<media:image>";
   if (mime.startsWith("video/")) return "<media:video>";
@@ -768,17 +878,30 @@ async function resolveReplyContext(message: Message): Promise<string | null> {
   }
 }
 
-function buildDirectLabel(message: import("discord.js").Message) {
+function buildDirectLabel(message: Message) {
   const username = message.author.tag;
   return `${username} id:${message.author.id}`;
 }
 
-function buildGuildLabel(message: import("discord.js").Message) {
+function buildGuildLabel(message: Message) {
   const channelName =
     "name" in message.channel ? message.channel.name : message.channelId;
   return `${message.guild?.name ?? "Guild"} #${channelName} id:${message.channelId}`;
 }
 
+function formatDiscordReactionEmoji(
+  reaction: MessageReaction | PartialMessageReaction,
+) {
+  if (typeof reaction.emoji.toString === "function") {
+    const rendered = reaction.emoji.toString();
+    if (rendered && rendered !== "[object Object]") return rendered;
+  }
+  if (reaction.emoji.id && reaction.emoji.name) {
+    return `${reaction.emoji.name}:${reaction.emoji.id}`;
+  }
+  return reaction.emoji.name ?? "emoji";
+}
+
 export function normalizeDiscordAllowList(
   raw: Array<string | number> | undefined,
   prefixes: string[],
@@ -863,7 +986,7 @@ export function allowListMatches(
 }
 
 export function resolveDiscordGuildEntry(params: {
-  guild: import("discord.js").Guild | null;
+  guild: Guild | null;
   guildEntries: Record<string, DiscordGuildEntryResolved> | undefined;
 }): DiscordGuildEntryResolved | null {
   const { guild, guildEntries } = params;
@@ -878,6 +1001,7 @@ export function resolveDiscordGuildEntry(params: {
       id: guildId,
       slug: direct.slug ?? guildSlug,
       requireMention: direct.requireMention,
+      reactionNotifications: direct.reactionNotifications,
       users: direct.users,
       channels: direct.channels,
     };
@@ -888,6 +1012,7 @@ export function resolveDiscordGuildEntry(params: {
       id: guildId,
       slug: entry.slug ?? guildSlug,
       requireMention: entry.requireMention,
+      reactionNotifications: entry.reactionNotifications,
       users: entry.users,
       channels: entry.channels,
     };
@@ -902,6 +1027,7 @@ export function resolveDiscordGuildEntry(params: {
       id: guildId,
       slug: entry.slug ?? guildSlug,
       requireMention: entry.requireMention,
+      reactionNotifications: entry.reactionNotifications,
       users: entry.users,
       channels: entry.channels,
     };
@@ -912,6 +1038,7 @@ export function resolveDiscordGuildEntry(params: {
       id: guildId,
       slug: wildcard.slug ?? guildSlug,
       requireMention: wildcard.requireMention,
+      reactionNotifications: wildcard.reactionNotifications,
       users: wildcard.users,
       channels: wildcard.channels,
     };
@@ -1121,7 +1248,7 @@ async function deliverSlashReplies({
   textLimit,
 }: {
   replies: ReplyPayload[];
-  interaction: import("discord.js").ChatInputCommandInteraction;
+  interaction: ChatInputCommandInteraction;
   ephemeral: boolean;
   textLimit: number;
 }) {
diff --git a/ui/src/ui/controllers/config.ts b/ui/src/ui/controllers/config.ts
index a18f60feb..4cf9c2589 100644
--- a/ui/src/ui/controllers/config.ts
+++ b/ui/src/ui/controllers/config.ts
@@ -197,6 +197,13 @@ export function applyConfigSnapshot(state: ConfigState, snapshot: ConfigSnapshot
                   typeof entry.requireMention === "boolean"
                     ? entry.requireMention
                     : false,
+                reactionNotifications:
+                  entry.reactionNotifications === "off" ||
+                  entry.reactionNotifications === "all" ||
+                  entry.reactionNotifications === "own" ||
+                  entry.reactionNotifications === "allowlist"
+                    ? entry.reactionNotifications
+                    : "allowlist",
                 users: toList(entry.users),
                 channels,
               };
diff --git a/ui/src/ui/controllers/connections.ts b/ui/src/ui/controllers/connections.ts
index 8990c1b17..68bdc7409 100644
--- a/ui/src/ui/controllers/connections.ts
+++ b/ui/src/ui/controllers/connections.ts
@@ -292,6 +292,14 @@ export async function saveDiscordConfig(state: ConnectionsState) {
       const slug = String(guild.slug ?? "").trim();
       if (slug) entry.slug = slug;
       if (guild.requireMention) entry.requireMention = true;
+      if (
+        guild.reactionNotifications === "off" ||
+        guild.reactionNotifications === "all" ||
+        guild.reactionNotifications === "own" ||
+        guild.reactionNotifications === "allowlist"
+      ) {
+        entry.reactionNotifications = guild.reactionNotifications;
+      }
       const users = parseList(guild.users);
       if (users.length > 0) entry.users = users;
       const channels: Record<string, unknown> = {};
diff --git a/ui/src/ui/ui-types.ts b/ui/src/ui/ui-types.ts
index 8850793f6..9eea25bf3 100644
--- a/ui/src/ui/ui-types.ts
+++ b/ui/src/ui/ui-types.ts
@@ -31,6 +31,7 @@ export type DiscordGuildForm = {
   key: string;
   slug: string;
   requireMention: boolean;
+  reactionNotifications: "off" | "own" | "all" | "allowlist";
   users: string;
   channels: DiscordGuildChannelForm[];
 };
diff --git a/ui/src/ui/views/connections.ts b/ui/src/ui/views/connections.ts
index 1f918ace0..2f23d795d 100644
--- a/ui/src/ui/views/connections.ts
+++ b/ui/src/ui/views/connections.ts
@@ -645,6 +645,26 @@ function renderProvider(
                             <option value="no">No</option>
                           </select>
                         </label>
+                        <label class="field">
+                          <span>Reaction notifications</span>
+                          <select
+                            .value=${guild.reactionNotifications}
+                            @change=${(e: Event) => {
+                              const next = [...props.discordForm.guilds];
+                              next[guildIndex] = {
+                                ...next[guildIndex],
+                                reactionNotifications: (e.target as HTMLSelectElement)
+                                  .value as "off" | "own" | "all",
+                              };
+                              props.onDiscordChange({ guilds: next });
+                            }}
+                          >
+                            <option value="off">Off</option>
+                            <option value="own">Own</option>
+                            <option value="all">All</option>
+                            <option value="allowlist">Allowlist</option>
+                          </select>
+                        </label>
                         <label class="field">
                           <span>Users allowlist</span>
                           <input
@@ -812,6 +832,7 @@ function renderProvider(
                         key: "",
                         slug: "",
                         requireMention: false,
+                        reactionNotifications: "allowlist",
                         users: "",
                         channels: [],
                       },