fix: Discord acp inline actions + bound-thread filter (#33136) (thanks @thewilloftheshadow) (#33136)

CHANGELOG.md

@@ -123,6 +123,7 @@ Docs: https://docs.openclaw.ai
 - Plugin SDK/runtime hardening: add package export verification in CI/release checks to catch missing runtime exports before publish-time regressions. (#28575) Thanks @bmendonca3.
 - Media/MIME normalization: normalize parameterized/case-variant MIME strings in `kindFromMime` (for example `Audio/Ogg; codecs=opus`) so WhatsApp voice notes are classified as audio and routed through transcription correctly. (#32280) Thanks @Lucenx9.
 - Discord/audio preflight mentions: detect audio attachments via Discord `content_type` and gate preflight transcription on typed text (not media placeholders), so guild voice-note mentions are transcribed and matched correctly. (#32136) Thanks @jnMetaCode.
+- Discord/acp inline actions: prefer autocomplete for `/acp` action inline values and ignore bound-thread bot system messages to prevent ACP loops. (#33136) Thanks @thewilloftheshadow.
 - Feishu/topic session routing: use `thread_id` as topic session scope fallback when `root_id` is absent, keep first-turn topic keys stable across thread creation, and force thread replies when inbound events already carry topic/thread context. (#29788) Thanks @songyaolun.
 - Gateway/Webchat NO_REPLY streaming: suppress assistant lead-fragment deltas that are prefixes of `NO_REPLY` and keep final-message buffering in sync, preventing partial `NO` leaks on silent-response runs while preserving legitimate short replies. (#32073) Thanks @liuxiaopai-ai.
 - Telegram/models picker callbacks: keep long model buttons selectable by falling back to compact callback payloads and resolving provider ids on selection (with provider re-prompt on ambiguity), avoiding Telegram 64-byte callback truncation failures. (#31857) Thanks @bmendonca3.

src/auto-reply/commands-registry.data.ts

@@ -322,6 +322,7 @@ function buildChatCommands(): ChatCommandDefinition[] {
           name: "action",
           description: "Action to run",
           type: "string",
+          preferAutocomplete: true,
           choices: [
             "spawn",
             "cancel",

src/auto-reply/commands-registry.types.ts

@@ -31,6 +31,7 @@ export type CommandArgDefinition = {
   type: CommandArgType;
   required?: boolean;
   choices?: CommandArgChoice[] | CommandArgChoicesProvider;
+  preferAutocomplete?: boolean;
   captureRemaining?: boolean;
 };
 

src/discord/monitor/message-handler.preflight.test.ts

@@ -83,6 +83,187 @@ describe("preflightDiscordMessage", () => {
     transcribeFirstAudioMock.mockReset();
   });
 
+  it("drops bound-thread bot system messages to prevent ACP self-loop", async () => {
+    const threadBinding = createThreadBinding({
+      targetKind: "acp",
+      targetSessionKey: "agent:main:acp:discord-thread-1",
+    });
+    const threadId = "thread-system-1";
+    const parentId = "channel-parent-1";
+    const client = {
+      fetchChannel: async (channelId: string) => {
+        if (channelId === threadId) {
+          return {
+            id: threadId,
+            type: ChannelType.PublicThread,
+            name: "focus",
+            parentId,
+            ownerId: "owner-1",
+          };
+        }
+        if (channelId === parentId) {
+          return {
+            id: parentId,
+            type: ChannelType.GuildText,
+            name: "general",
+          };
+        }
+        return null;
+      },
+    } as unknown as import("@buape/carbon").Client;
+    const message = {
+      id: "m-system-1",
+      content:
+        "⚙️ codex-acp session active (auto-unfocus in 24h). Messages here go directly to this session.",
+      timestamp: new Date().toISOString(),
+      channelId: threadId,
+      attachments: [],
+      mentionedUsers: [],
+      mentionedRoles: [],
+      mentionedEveryone: false,
+      author: {
+        id: "relay-bot-1",
+        bot: true,
+        username: "OpenClaw",
+      },
+    } as unknown as import("@buape/carbon").Message;
+
+    const result = await preflightDiscordMessage({
+      cfg: {
+        session: {
+          mainKey: "main",
+          scope: "per-sender",
+        },
+      } as import("../../config/config.js").OpenClawConfig,
+      discordConfig: {
+        allowBots: true,
+      } as NonNullable<import("../../config/config.js").OpenClawConfig["channels"]>["discord"],
+      accountId: "default",
+      token: "token",
+      runtime: {} as import("../../runtime.js").RuntimeEnv,
+      botUserId: "openclaw-bot",
+      guildHistories: new Map(),
+      historyLimit: 0,
+      mediaMaxBytes: 1_000_000,
+      textLimit: 2_000,
+      replyToMode: "all",
+      dmEnabled: true,
+      groupDmEnabled: true,
+      ackReactionScope: "direct",
+      groupPolicy: "open",
+      threadBindings: {
+        getByThreadId: (id: string) => (id === threadId ? threadBinding : undefined),
+      } as import("./thread-bindings.js").ThreadBindingManager,
+      data: {
+        channel_id: threadId,
+        guild_id: "guild-1",
+        guild: {
+          id: "guild-1",
+          name: "Guild One",
+        },
+        author: message.author,
+        message,
+      } as unknown as import("./listeners.js").DiscordMessageEvent,
+      client,
+    });
+
+    expect(result).toBeNull();
+  });
+
+  it("keeps bound-thread regular bot messages flowing when allowBots=true", async () => {
+    const threadBinding = createThreadBinding({
+      targetKind: "acp",
+      targetSessionKey: "agent:main:acp:discord-thread-1",
+    });
+    const threadId = "thread-bot-regular-1";
+    const parentId = "channel-parent-regular-1";
+    const client = {
+      fetchChannel: async (channelId: string) => {
+        if (channelId === threadId) {
+          return {
+            id: threadId,
+            type: ChannelType.PublicThread,
+            name: "focus",
+            parentId,
+            ownerId: "owner-1",
+          };
+        }
+        if (channelId === parentId) {
+          return {
+            id: parentId,
+            type: ChannelType.GuildText,
+            name: "general",
+          };
+        }
+        return null;
+      },
+    } as unknown as import("@buape/carbon").Client;
+    const message = {
+      id: "m-bot-regular-1",
+      content: "here is tool output chunk",
+      timestamp: new Date().toISOString(),
+      channelId: threadId,
+      attachments: [],
+      mentionedUsers: [],
+      mentionedRoles: [],
+      mentionedEveryone: false,
+      author: {
+        id: "relay-bot-1",
+        bot: true,
+        username: "Relay",
+      },
+    } as unknown as import("@buape/carbon").Message;
+
+    registerSessionBindingAdapter({
+      channel: "discord",
+      accountId: "default",
+      listBySession: () => [],
+      resolveByConversation: (ref) => (ref.conversationId === threadId ? threadBinding : null),
+    });
+
+    const result = await preflightDiscordMessage({
+      cfg: {
+        session: {
+          mainKey: "main",
+          scope: "per-sender",
+        },
+      } as import("../../config/config.js").OpenClawConfig,
+      discordConfig: {
+        allowBots: true,
+      } as NonNullable<import("../../config/config.js").OpenClawConfig["channels"]>["discord"],
+      accountId: "default",
+      token: "token",
+      runtime: {} as import("../../runtime.js").RuntimeEnv,
+      botUserId: "openclaw-bot",
+      guildHistories: new Map(),
+      historyLimit: 0,
+      mediaMaxBytes: 1_000_000,
+      textLimit: 2_000,
+      replyToMode: "all",
+      dmEnabled: true,
+      groupDmEnabled: true,
+      ackReactionScope: "direct",
+      groupPolicy: "open",
+      threadBindings: {
+        getByThreadId: (id: string) => (id === threadId ? threadBinding : undefined),
+      } as import("./thread-bindings.js").ThreadBindingManager,
+      data: {
+        channel_id: threadId,
+        guild_id: "guild-1",
+        guild: {
+          id: "guild-1",
+          name: "Guild One",
+        },
+        author: message.author,
+        message,
+      } as unknown as import("./listeners.js").DiscordMessageEvent,
+      client,
+    });
+
+    expect(result).not.toBeNull();
+    expect(result?.boundSessionKey).toBe(threadBinding.targetSessionKey);
+  });
+
   it("bypasses mention gating in bound threads for allowed bot senders", async () => {
     const threadBinding = createThreadBinding();
     const threadId = "thread-bot-focus";

src/discord/monitor/message-handler.preflight.ts

@@ -66,6 +66,23 @@ export type {
   DiscordMessagePreflightParams,
 } from "./message-handler.preflight.types.js";
 
+const DISCORD_BOUND_THREAD_SYSTEM_PREFIXES = ["⚙️", "🤖", "🧰"];
+
+function isBoundThreadBotSystemMessage(params: {
+  isBoundThreadSession: boolean;
+  isBotAuthor: boolean;
+  text?: string;
+}): boolean {
+  if (!params.isBoundThreadSession || !params.isBotAuthor) {
+    return false;
+  }
+  const text = params.text?.trim();
+  if (!text) {
+    return false;
+  }
+  return DISCORD_BOUND_THREAD_SYSTEM_PREFIXES.some((prefix) => text.startsWith(prefix));
+}
+
 export function resolvePreflightMentionRequirement(params: {
   shouldRequireMention: boolean;
   isBoundThreadSession: boolean;
@@ -324,6 +341,17 @@ export async function preflightDiscordMessage(
         agentId: boundAgentId ?? route.agentId,
       }
     : route;
+  const isBoundThreadSession = Boolean(boundSessionKey && earlyThreadChannel);
+  if (
+    isBoundThreadBotSystemMessage({
+      isBoundThreadSession,
+      isBotAuthor: Boolean(author.bot),
+      text: messageText,
+    })
+  ) {
+    logVerbose(`discord: drop bound-thread bot system message ${message.id}`);
+    return null;
+  }
   const mentionRegexes = buildMentionRegexes(params.cfg, effectiveRoute.agentId);
   const explicitlyMentioned = Boolean(
     botId && message.mentionedUsers?.some((user: User) => user.id === botId),
@@ -492,7 +520,6 @@ export async function preflightDiscordMessage(
     channelConfig,
     guildInfo,
   });
-  const isBoundThreadSession = Boolean(boundSessionKey && threadChannel);
   const shouldRequireMention = resolvePreflightMentionRequirement({
     shouldRequireMention: shouldRequireMentionByConfig,
     isBoundThreadSession,

src/discord/monitor/native-command.options.test.ts

@@ -0,0 +1,69 @@
+import { describe, expect, it } from "vitest";
+import { listNativeCommandSpecs } from "../../auto-reply/commands-registry.js";
+import type { OpenClawConfig, loadConfig } from "../../config/config.js";
+import { createDiscordNativeCommand } from "./native-command.js";
+import { createNoopThreadBindingManager } from "./thread-bindings.js";
+
+function createNativeCommand(name: string): ReturnType<typeof createDiscordNativeCommand> {
+  const command = listNativeCommandSpecs({ provider: "discord" }).find(
+    (entry) => entry.name === name,
+  );
+  if (!command) {
+    throw new Error(`missing native command: ${name}`);
+  }
+  const cfg = {} as ReturnType<typeof loadConfig>;
+  const discordConfig = {} as NonNullable<OpenClawConfig["channels"]>["discord"];
+  return createDiscordNativeCommand({
+    command,
+    cfg,
+    discordConfig,
+    accountId: "default",
+    sessionPrefix: "discord:slash",
+    ephemeralDefault: true,
+    threadBindings: createNoopThreadBindingManager("default"),
+  });
+}
+
+type CommandOption = NonNullable<ReturnType<typeof createDiscordNativeCommand>["options"]>[number];
+
+function findOption(
+  command: ReturnType<typeof createDiscordNativeCommand>,
+  name: string,
+): CommandOption | undefined {
+  return command.options?.find((entry) => entry.name === name);
+}
+
+function readAutocomplete(option: CommandOption | undefined): unknown {
+  if (!option || typeof option !== "object") {
+    return undefined;
+  }
+  return (option as { autocomplete?: unknown }).autocomplete;
+}
+
+function readChoices(option: CommandOption | undefined): unknown[] | undefined {
+  if (!option || typeof option !== "object") {
+    return undefined;
+  }
+  const value = (option as { choices?: unknown }).choices;
+  return Array.isArray(value) ? value : undefined;
+}
+
+describe("createDiscordNativeCommand option wiring", () => {
+  it("uses autocomplete for /acp action so inline action values are accepted", () => {
+    const command = createNativeCommand("acp");
+    const action = findOption(command, "action");
+
+    expect(action).toBeDefined();
+    expect(typeof readAutocomplete(action)).toBe("function");
+    expect(readChoices(action)).toBeUndefined();
+  });
+
+  it("keeps static choices for non-acp string action arguments", () => {
+    const command = createNativeCommand("voice");
+    const action = findOption(command, "action");
+
+    expect(action).toBeDefined();
+    expect(readAutocomplete(action)).toBeUndefined();
+    expect(readChoices(action)?.length).toBeGreaterThan(0);
+  });
+});

src/discord/monitor/native-command.ts

@@ -116,8 +116,9 @@ function buildDiscordCommandOptions(params: {
     }
     const resolvedChoices = resolveCommandArgChoices({ command, arg, cfg });
     const shouldAutocomplete =
-      resolvedChoices.length > 0 &&
+      arg.preferAutocomplete === true ||
-      (typeof arg.choices === "function" || resolvedChoices.length > 25);
+      (resolvedChoices.length > 0 &&
+        (typeof arg.choices === "function" || resolvedChoices.length > 25));
     const autocomplete = shouldAutocomplete
       ? async (interaction: AutocompleteInteraction) => {
           const focused = interaction.options.getFocused();