fix: signal reactions

CHANGELOG.md

@@ -24,6 +24,7 @@ Docs: https://docs.clawd.bot
 - Heartbeat: normalize target identifiers for consistent routing.
 - TUI: reload history after gateway reconnect to restore session state. (#1663)
 - Telegram: use wrapped fetch for long-polling on Node to normalize AbortSignal handling. (#1639)
+- Signal: repair reaction sends (group/UUID targets + CLI author flags). (#1651) Thanks @vilkasdev.
 - Exec: keep approvals for elevated ask unless full mode. (#1616) Thanks @ivancasco.
 - Agents: auto-compact on context overflow prompt errors before failing. (#1627) Thanks @rodrigouroz.
 - Agents: use the active auth profile for auto-compaction recovery.

docs/channels/signal.md

@@ -105,8 +105,29 @@ Groups:
 - **Read receipts**: when `channels.signal.sendReadReceipts` is true, Clawdbot forwards read receipts for allowed DMs.
 - Signal-cli does not expose read receipts for groups.
 
+## Reactions (message tool)
+- Use `message action=react` with `channel=signal`.
+- Targets: sender E.164 or UUID (use `uuid:<id>` from pairing output; bare UUID works too).
+- `messageId` is the Signal timestamp for the message you’re reacting to.
+- Group reactions require `targetAuthor` or `targetAuthorUuid`.
+
+Examples:
+```
+message action=react channel=signal target=uuid:123e4567-e89b-12d3-a456-426614174000 messageId=1737630212345 emoji=🔥
+message action=react channel=signal target=+15551234567 messageId=1737630212345 emoji=🔥 remove=true
+message action=react channel=signal target=signal:group:<groupId> targetAuthor=uuid:<sender-uuid> messageId=1737630212345 emoji=✅
+```
+
+Config:
+- `channels.signal.actions.reactions`: enable/disable reaction actions (default true).
+- `channels.signal.reactionLevel`: `off | ack | minimal | extensive`.
+  - `off`/`ack` disables agent reactions (message tool `react` will error).
+  - `minimal`/`extensive` enables agent reactions and sets the guidance level.
+- Per-account overrides: `channels.signal.accounts.<id>.actions.reactions`, `channels.signal.accounts.<id>.reactionLevel`.
+
 ## Delivery targets (CLI/cron)
 - DMs: `signal:+15551234567` (or plain E.164).
+- UUID DMs: `uuid:<id>` (or bare UUID).
 - Groups: `signal:group:<groupId>`.
 - Usernames: `username:<name>` (if supported by your Signal account).
 

docs/cli/message.md

@@ -66,11 +66,12 @@ Name lookup:
   - Discord only: `--poll-duration-hours`, `--message`
 
 - `react`
-  - Channels: Discord/Google Chat/Slack/Telegram/WhatsApp
+  - Channels: Discord/Google Chat/Slack/Telegram/WhatsApp/Signal
   - Required: `--message-id`, `--target`
-  - Optional: `--emoji`, `--remove`, `--participant`, `--from-me`
+  - Optional: `--emoji`, `--remove`, `--participant`, `--from-me`, `--target-author`, `--target-author-uuid`
   - Note: `--remove` requires `--emoji` (omit `--emoji` to clear own reactions where supported; see /tools/reactions)
   - WhatsApp only: `--participant`, `--from-me`
+  - Signal group reactions: `--target-author` or `--target-author-uuid` required
 
 - `reactions`
   - Channels: Discord/Google Chat/Slack
@@ -213,6 +214,13 @@ clawdbot message react --channel slack \
   --target C123 --message-id 456 --emoji "✅"
 ```
 
+React in a Signal group:
+```
+clawdbot message react --channel signal \
+  --target signal:group:abc123 --message-id 1737630212345 \
+  --emoji "✅" --target-author-uuid 123e4567-e89b-12d3-a456-426614174000
+```
+
 Send Telegram inline buttons:
 ```
 clawdbot message send --channel telegram --target @mychat --message "Choose:" \

extensions/signal/src/channel.ts

@@ -18,12 +18,20 @@ import {
   setAccountEnabledInConfigSection,
   signalOnboardingAdapter,
   SignalConfigSchema,
+  type ChannelMessageActionAdapter,
   type ChannelPlugin,
   type ResolvedSignalAccount,
 } from "clawdbot/plugin-sdk";
 
 import { getSignalRuntime } from "./runtime.js";
 
+const signalMessageActions: ChannelMessageActionAdapter = {
+  listActions: (ctx) => getSignalRuntime().channel.signal.messageActions.listActions(ctx),
+  supportsAction: (ctx) => getSignalRuntime().channel.signal.messageActions.supportsAction?.(ctx),
+  handleAction: async (ctx) =>
+    await getSignalRuntime().channel.signal.messageActions.handleAction(ctx),
+};
+
 const meta = getChatChannelMeta("signal");
 
 export const signalPlugin: ChannelPlugin<ResolvedSignalAccount> = {
@@ -42,7 +50,9 @@ export const signalPlugin: ChannelPlugin<ResolvedSignalAccount> = {
   capabilities: {
     chatTypes: ["direct", "group"],
     media: true,
+    reactions: true,
   },
+  actions: signalMessageActions,
   streaming: {
     blockStreamingCoalesceDefaults: { minChars: 1500, idleMs: 1000 },
   },
@@ -115,7 +125,7 @@ export const signalPlugin: ChannelPlugin<ResolvedSignalAccount> = {
     normalizeTarget: normalizeSignalMessagingTarget,
     targetResolver: {
       looksLikeId: looksLikeSignalTargetId,
-      hint: "<E.164|group:ID|signal:group:ID|signal:+E.164>",
+      hint: "<E.164|uuid:ID|group:ID|signal:group:ID|signal:+E.164>",
     },
   },
   setup: {

src/agents/pi-embedded-runner/compact.ts

@@ -15,6 +15,8 @@ import { resolveChannelCapabilities } from "../../config/channel-capabilities.js
 import type { ClawdbotConfig } from "../../config/config.js";
 import { getMachineDisplayName } from "../../infra/machine-name.js";
 import { resolveTelegramInlineButtonsScope } from "../../telegram/inline-buttons.js";
+import { resolveTelegramReactionLevel } from "../../telegram/reaction-level.js";
+import { resolveSignalReactionLevel } from "../../signal/reaction-level.js";
 import { type enqueueCommand, enqueueCommandInLane } from "../../process/command-queue.js";
 import { normalizeMessageChannel } from "../../utils/message-channel.js";
 import { isSubagentSessionKey } from "../../routing/session-key.js";
@@ -255,6 +257,28 @@ export async function compactEmbeddedPiSessionDirect(
         }
       }
     }
+    const reactionGuidance =
+      runtimeChannel && params.config
+        ? (() => {
+            if (runtimeChannel === "telegram") {
+              const resolved = resolveTelegramReactionLevel({
+                cfg: params.config,
+                accountId: params.agentAccountId ?? undefined,
+              });
+              const level = resolved.agentReactionGuidance;
+              return level ? { level, channel: "Telegram" } : undefined;
+            }
+            if (runtimeChannel === "signal") {
+              const resolved = resolveSignalReactionLevel({
+                cfg: params.config,
+                accountId: params.agentAccountId ?? undefined,
+              });
+              const level = resolved.agentReactionGuidance;
+              return level ? { level, channel: "Signal" } : undefined;
+            }
+            return undefined;
+          })()
+        : undefined;
     // Resolve channel-specific message actions for system prompt
     const channelActions = runtimeChannel
       ? listChannelSupportedActions({
@@ -313,6 +337,7 @@ export async function compactEmbeddedPiSessionDirect(
       ttsHint,
       promptMode,
       runtimeInfo,
+      reactionGuidance,
       messageToolHints,
       sandboxInfo,
       tools,

src/agents/pi-embedded-runner/run/attempt.ts

@@ -15,6 +15,7 @@ import { resolveChannelCapabilities } from "../../../config/channel-capabilities
 import { getMachineDisplayName } from "../../../infra/machine-name.js";
 import { resolveTelegramInlineButtonsScope } from "../../../telegram/inline-buttons.js";
 import { resolveTelegramReactionLevel } from "../../../telegram/reaction-level.js";
+import { resolveSignalReactionLevel } from "../../../signal/reaction-level.js";
 import { normalizeMessageChannel } from "../../../utils/message-channel.js";
 import { isReasoningTagProvider } from "../../../utils/provider-utils.js";
 import { isSubagentSessionKey } from "../../../routing/session-key.js";
@@ -255,14 +256,25 @@ export async function runEmbeddedAttempt(
       }
     }
     const reactionGuidance =
-      runtimeChannel === "telegram" && params.config
+      runtimeChannel && params.config
         ? (() => {
-            const resolved = resolveTelegramReactionLevel({
-              cfg: params.config,
-              accountId: params.agentAccountId ?? undefined,
-            });
-            const level = resolved.agentReactionGuidance;
-            return level ? { level, channel: "Telegram" } : undefined;
+            if (runtimeChannel === "telegram") {
+              const resolved = resolveTelegramReactionLevel({
+                cfg: params.config,
+                accountId: params.agentAccountId ?? undefined,
+              });
+              const level = resolved.agentReactionGuidance;
+              return level ? { level, channel: "Telegram" } : undefined;
+            }
+            if (runtimeChannel === "signal") {
+              const resolved = resolveSignalReactionLevel({
+                cfg: params.config,
+                accountId: params.agentAccountId ?? undefined,
+              });
+              const level = resolved.agentReactionGuidance;
+              return level ? { level, channel: "Signal" } : undefined;
+            }
+            return undefined;
           })()
         : undefined;
     const { defaultAgentId, sessionAgentId } = resolveSessionAgentIds({

src/agents/tools/message-tool.ts

@@ -94,6 +94,9 @@ function buildReactionSchema() {
     messageId: Type.Optional(Type.String()),
     emoji: Type.Optional(Type.String()),
     remove: Type.Optional(Type.Boolean()),
+    targetAuthor: Type.Optional(Type.String()),
+    targetAuthorUuid: Type.Optional(Type.String()),
+    groupId: Type.Optional(Type.String()),
   };
 }
 

src/channels/plugins/actions/signal.test.ts

@@ -0,0 +1,151 @@
+import { describe, expect, it, vi } from "vitest";
+
+import type { ClawdbotConfig } from "../../../config/config.js";
+import { signalMessageActions } from "./signal.js";
+
+const sendReactionSignal = vi.fn(async () => ({ ok: true }));
+const removeReactionSignal = vi.fn(async () => ({ ok: true }));
+
+vi.mock("../../../signal/send-reactions.js", () => ({
+  sendReactionSignal: (...args: unknown[]) => sendReactionSignal(...args),
+  removeReactionSignal: (...args: unknown[]) => removeReactionSignal(...args),
+}));
+
+describe("signalMessageActions", () => {
+  it("returns no actions when no configured accounts exist", () => {
+    const cfg = {} as ClawdbotConfig;
+    expect(signalMessageActions.listActions({ cfg })).toEqual([]);
+  });
+
+  it("hides react when reactions are disabled", () => {
+    const cfg = {
+      channels: { signal: { account: "+15550001111", actions: { reactions: false } } },
+    } as ClawdbotConfig;
+    expect(signalMessageActions.listActions({ cfg })).toEqual(["send"]);
+  });
+
+  it("enables react when at least one account allows reactions", () => {
+    const cfg = {
+      channels: {
+        signal: {
+          actions: { reactions: false },
+          accounts: {
+            work: { account: "+15550001111", actions: { reactions: true } },
+          },
+        },
+      },
+    } as ClawdbotConfig;
+    expect(signalMessageActions.listActions({ cfg })).toEqual(["send", "react"]);
+  });
+
+  it("skips send for plugin dispatch", () => {
+    expect(signalMessageActions.supportsAction?.({ action: "send" })).toBe(false);
+    expect(signalMessageActions.supportsAction?.({ action: "react" })).toBe(true);
+  });
+
+  it("blocks reactions when action gate is disabled", async () => {
+    const cfg = {
+      channels: { signal: { account: "+15550001111", actions: { reactions: false } } },
+    } as ClawdbotConfig;
+
+    await expect(
+      signalMessageActions.handleAction({
+        action: "react",
+        params: { to: "+15550001111", messageId: "123", emoji: "✅" },
+        cfg,
+        accountId: undefined,
+      }),
+    ).rejects.toThrow(/actions\.reactions/);
+  });
+
+  it("uses account-level actions when enabled", async () => {
+    sendReactionSignal.mockClear();
+    const cfg = {
+      channels: {
+        signal: {
+          actions: { reactions: false },
+          accounts: {
+            work: { account: "+15550001111", actions: { reactions: true } },
+          },
+        },
+      },
+    } as ClawdbotConfig;
+
+    await signalMessageActions.handleAction({
+      action: "react",
+      params: { to: "+15550001111", messageId: "123", emoji: "👍" },
+      cfg,
+      accountId: "work",
+    });
+
+    expect(sendReactionSignal).toHaveBeenCalledWith("+15550001111", 123, "👍", {
+      accountId: "work",
+    });
+  });
+
+  it("normalizes uuid recipients", async () => {
+    sendReactionSignal.mockClear();
+    const cfg = {
+      channels: { signal: { account: "+15550001111" } },
+    } as ClawdbotConfig;
+
+    await signalMessageActions.handleAction({
+      action: "react",
+      params: {
+        recipient: "uuid:123e4567-e89b-12d3-a456-426614174000",
+        messageId: "123",
+        emoji: "🔥",
+      },
+      cfg,
+      accountId: undefined,
+    });
+
+    expect(sendReactionSignal).toHaveBeenCalledWith(
+      "123e4567-e89b-12d3-a456-426614174000",
+      123,
+      "🔥",
+      { accountId: undefined },
+    );
+  });
+
+  it("requires targetAuthor for group reactions", async () => {
+    const cfg = {
+      channels: { signal: { account: "+15550001111" } },
+    } as ClawdbotConfig;
+
+    await expect(
+      signalMessageActions.handleAction({
+        action: "react",
+        params: { to: "signal:group:group-id", messageId: "123", emoji: "✅" },
+        cfg,
+        accountId: undefined,
+      }),
+    ).rejects.toThrow(/targetAuthor/);
+  });
+
+  it("passes groupId and targetAuthor for group reactions", async () => {
+    sendReactionSignal.mockClear();
+    const cfg = {
+      channels: { signal: { account: "+15550001111" } },
+    } as ClawdbotConfig;
+
+    await signalMessageActions.handleAction({
+      action: "react",
+      params: {
+        to: "signal:group:group-id",
+        targetAuthor: "uuid:123e4567-e89b-12d3-a456-426614174000",
+        messageId: "123",
+        emoji: "✅",
+      },
+      cfg,
+      accountId: undefined,
+    });
+
+    expect(sendReactionSignal).toHaveBeenCalledWith("", 123, "✅", {
+      accountId: undefined,
+      groupId: "group-id",
+      targetAuthor: "uuid:123e4567-e89b-12d3-a456-426614174000",
+      targetAuthorUuid: undefined,
+    });
+  });
+});

src/channels/plugins/actions/signal.ts

@@ -0,0 +1,130 @@
+import { createActionGate, jsonResult, readStringParam } from "../../../agents/tools/common.js";
+import { listEnabledSignalAccounts, resolveSignalAccount } from "../../../signal/accounts.js";
+import { resolveSignalReactionLevel } from "../../../signal/reaction-level.js";
+import { sendReactionSignal, removeReactionSignal } from "../../../signal/send-reactions.js";
+import type { ChannelMessageActionAdapter, ChannelMessageActionName } from "../types.js";
+
+const providerId = "signal";
+const GROUP_PREFIX = "group:";
+
+function normalizeSignalReactionRecipient(raw: string): string {
+  const trimmed = raw.trim();
+  if (!trimmed) return trimmed;
+  const withoutSignal = trimmed.replace(/^signal:/i, "").trim();
+  if (!withoutSignal) return withoutSignal;
+  if (withoutSignal.toLowerCase().startsWith("uuid:")) {
+    return withoutSignal.slice("uuid:".length).trim();
+  }
+  return withoutSignal;
+}
+
+function resolveSignalReactionTarget(raw: string): { recipient?: string; groupId?: string } {
+  const trimmed = raw.trim();
+  if (!trimmed) return {};
+  const withoutSignal = trimmed.replace(/^signal:/i, "").trim();
+  if (!withoutSignal) return {};
+  if (withoutSignal.toLowerCase().startsWith(GROUP_PREFIX)) {
+    const groupId = withoutSignal.slice(GROUP_PREFIX.length).trim();
+    return groupId ? { groupId } : {};
+  }
+  return { recipient: normalizeSignalReactionRecipient(withoutSignal) };
+}
+
+export const signalMessageActions: ChannelMessageActionAdapter = {
+  listActions: ({ cfg }) => {
+    const accounts = listEnabledSignalAccounts(cfg);
+    if (accounts.length === 0) return [];
+    const configuredAccounts = accounts.filter((account) => account.configured);
+    if (configuredAccounts.length === 0) return [];
+
+    const actions = new Set<ChannelMessageActionName>(["send"]);
+
+    const reactionsEnabled = configuredAccounts.some((account) =>
+      createActionGate(account.config.actions)("reactions"),
+    );
+    if (reactionsEnabled) {
+      actions.add("react");
+    }
+
+    return Array.from(actions);
+  },
+  supportsAction: ({ action }) => action !== "send",
+
+  handleAction: async ({ action, params, cfg, accountId }) => {
+    if (action === "send") {
+      throw new Error("Send should be handled by outbound, not actions handler.");
+    }
+
+    if (action === "react") {
+      // Check reaction level first
+      const reactionLevelInfo = resolveSignalReactionLevel({
+        cfg,
+        accountId: accountId ?? undefined,
+      });
+      if (!reactionLevelInfo.agentReactionsEnabled) {
+        throw new Error(
+          `Signal agent reactions disabled (reactionLevel="${reactionLevelInfo.level}"). ` +
+            `Set channels.signal.reactionLevel to "minimal" or "extensive" to enable.`,
+        );
+      }
+
+      // Also check the action gate for backward compatibility
+      const actionConfig = resolveSignalAccount({ cfg, accountId }).config.actions;
+      const isActionEnabled = createActionGate(actionConfig);
+      if (!isActionEnabled("reactions")) {
+        throw new Error("Signal reactions are disabled via actions.reactions.");
+      }
+
+      const recipientRaw =
+        readStringParam(params, "recipient") ??
+        readStringParam(params, "to", {
+          required: true,
+          label: "recipient (UUID, phone number, or group)",
+        });
+      const target = resolveSignalReactionTarget(recipientRaw);
+      if (!target.recipient && !target.groupId) {
+        throw new Error("recipient or group required");
+      }
+
+      const messageId = readStringParam(params, "messageId", {
+        required: true,
+        label: "messageId (timestamp)",
+      });
+      const targetAuthor = readStringParam(params, "targetAuthor");
+      const targetAuthorUuid = readStringParam(params, "targetAuthorUuid");
+      if (target.groupId && !targetAuthor && !targetAuthorUuid) {
+        throw new Error("targetAuthor or targetAuthorUuid required for group reactions.");
+      }
+
+      const emoji = readStringParam(params, "emoji", { allowEmpty: true });
+      const remove = typeof params.remove === "boolean" ? params.remove : undefined;
+
+      const timestamp = parseInt(messageId, 10);
+      if (!Number.isFinite(timestamp)) {
+        throw new Error(`Invalid messageId: ${messageId}. Expected numeric timestamp.`);
+      }
+
+      if (remove) {
+        if (!emoji) throw new Error("Emoji required to remove reaction.");
+        await removeReactionSignal(target.recipient ?? "", timestamp, emoji, {
+          accountId: accountId ?? undefined,
+          groupId: target.groupId,
+          targetAuthor,
+          targetAuthorUuid,
+        });
+        return jsonResult({ ok: true, removed: emoji });
+      }
+
+      if (!emoji) throw new Error("Emoji required to add reaction.");
+      await sendReactionSignal(target.recipient ?? "", timestamp, emoji, {
+        accountId: accountId ?? undefined,
+        groupId: target.groupId,
+        targetAuthor,
+        targetAuthorUuid,
+      });
+      return jsonResult({ ok: true, added: emoji });
+    }
+
+    throw new Error(`Action ${action} not supported for ${providerId}.`);
+  },
+};

src/channels/plugins/normalize/signal.test.ts

@@ -0,0 +1,32 @@
+import { describe, expect, it } from "vitest";
+
+import { looksLikeSignalTargetId, normalizeSignalMessagingTarget } from "./signal.js";
+
+describe("signal target normalization", () => {
+  it("normalizes uuid targets by stripping uuid:", () => {
+    expect(normalizeSignalMessagingTarget("uuid:123E4567-E89B-12D3-A456-426614174000")).toBe(
+      "123e4567-e89b-12d3-a456-426614174000",
+    );
+  });
+
+  it("normalizes signal:uuid targets", () => {
+    expect(normalizeSignalMessagingTarget("signal:uuid:123E4567-E89B-12D3-A456-426614174000")).toBe(
+      "123e4567-e89b-12d3-a456-426614174000",
+    );
+  });
+
+  it("accepts uuid prefixes for target detection", () => {
+    expect(looksLikeSignalTargetId("uuid:123e4567-e89b-12d3-a456-426614174000")).toBe(true);
+    expect(looksLikeSignalTargetId("signal:uuid:123e4567-e89b-12d3-a456-426614174000")).toBe(true);
+  });
+
+  it("accepts compact UUIDs for target detection", () => {
+    expect(looksLikeSignalTargetId("123e4567e89b12d3a456426614174000")).toBe(true);
+    expect(looksLikeSignalTargetId("uuid:123e4567e89b12d3a456426614174000")).toBe(true);
+  });
+
+  it("rejects invalid uuid prefixes", () => {
+    expect(looksLikeSignalTargetId("uuid:")).toBe(false);
+    expect(looksLikeSignalTargetId("uuid:not-a-uuid")).toBe(false);
+  });
+});

src/channels/plugins/normalize/signal.ts

@@ -19,12 +19,30 @@ export function normalizeSignalMessagingTarget(raw: string): string | undefined
     const id = normalized.slice("u:".length).trim();
     return id ? `username:${id}`.toLowerCase() : undefined;
   }
+  if (lower.startsWith("uuid:")) {
+    const id = normalized.slice("uuid:".length).trim();
+    return id ? id.toLowerCase() : undefined;
+  }
   return normalized.toLowerCase();
 }
 
+// UUID pattern for signal-cli recipient IDs
+const UUID_PATTERN = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+const UUID_COMPACT_PATTERN = /^[0-9a-f]{32}$/i;
+
 export function looksLikeSignalTargetId(raw: string): boolean {
   const trimmed = raw.trim();
   if (!trimmed) return false;
   if (/^(signal:)?(group:|username:|u:)/i.test(trimmed)) return true;
+  if (/^(signal:)?uuid:/i.test(trimmed)) {
+    const stripped = trimmed
+      .replace(/^signal:/i, "")
+      .replace(/^uuid:/i, "")
+      .trim();
+    if (!stripped) return false;
+    return UUID_PATTERN.test(stripped) || UUID_COMPACT_PATTERN.test(stripped);
+  }
+  // Accept UUIDs (used by signal-cli for reactions)
+  if (UUID_PATTERN.test(trimmed) || UUID_COMPACT_PATTERN.test(trimmed)) return true;
   return /^\+?\d{3,}$/.test(trimmed);
 }

src/cli/program.smoke.test.ts

@@ -67,6 +67,28 @@ describe("cli program (smoke)", () => {
     expect(messageCommand).toHaveBeenCalled();
   });
 
+  it("runs message react with signal author fields", async () => {
+    const program = buildProgram();
+    await program.parseAsync(
+      [
+        "message",
+        "react",
+        "--channel",
+        "signal",
+        "--target",
+        "signal:group:abc123",
+        "--message-id",
+        "1737630212345",
+        "--emoji",
+        "✅",
+        "--target-author-uuid",
+        "123e4567-e89b-12d3-a456-426614174000",
+      ],
+      { from: "user" },
+    );
+    expect(messageCommand).toHaveBeenCalled();
+  });
+
   it("runs status command", async () => {
     const program = buildProgram();
     await program.parseAsync(["status"], { from: "user" });

src/cli/program/message/register.reactions.ts

@@ -13,6 +13,8 @@ export function registerMessageReactionsCommands(message: Command, helpers: Mess
     .option("--remove", "Remove reaction", false)
     .option("--participant <id>", "WhatsApp reaction participant")
     .option("--from-me", "WhatsApp reaction fromMe", false)
+    .option("--target-author <id>", "Signal reaction target author (uuid or phone)")
+    .option("--target-author-uuid <uuid>", "Signal reaction target author uuid")
     .action(async (opts) => {
       await helpers.runMessageAction("react", opts);
     });

src/config/types.signal.ts

@@ -8,6 +8,7 @@ import type { ChannelHeartbeatVisibilityConfig } from "./types.channels.js";
 import type { DmConfig } from "./types.messages.js";
 
 export type SignalReactionNotificationMode = "off" | "own" | "all" | "allowlist";
+export type SignalReactionLevel = "off" | "ack" | "minimal" | "extensive";
 
 export type SignalAccountConfig = {
   /** Optional display name for this account (used in CLI/UI lists). */
@@ -64,6 +65,19 @@ export type SignalAccountConfig = {
   reactionNotifications?: SignalReactionNotificationMode;
   /** Allowlist for reaction notifications when mode is allowlist. */
   reactionAllowlist?: Array<string | number>;
+  /** Action toggles for message tool capabilities. */
+  actions?: {
+    /** Enable/disable sending reactions via message tool (default: true). */
+    reactions?: boolean;
+  };
+  /**
+   * Controls agent reaction behavior:
+   * - "off": No reactions
+   * - "ack": Only automatic ack reactions (👀 when processing)
+   * - "minimal": Agent can react sparingly (default)
+   * - "extensive": Agent can react liberally
+   */
+  reactionLevel?: SignalReactionLevel;
   /** Heartbeat visibility settings for this channel. */
   heartbeat?: ChannelHeartbeatVisibilityConfig;
 };

src/config/zod-schema.providers-core.ts

@@ -499,6 +499,13 @@ export const SignalAccountSchemaBase = z
     mediaMaxMb: z.number().int().positive().optional(),
     reactionNotifications: z.enum(["off", "own", "all", "allowlist"]).optional(),
     reactionAllowlist: z.array(z.union([z.string(), z.number()])).optional(),
+    actions: z
+      .object({
+        reactions: z.boolean().optional(),
+      })
+      .strict()
+      .optional(),
+    reactionLevel: z.enum(["off", "ack", "minimal", "extensive"]).optional(),
     heartbeat: ChannelHeartbeatVisibilitySchema,
   })
   .strict();

src/plugins/runtime/index.ts

@@ -40,6 +40,7 @@ import { removeAckReactionAfterReply, shouldAckReaction } from "../../channels/a
 import { resolveCommandAuthorizedFromAuthorizers } from "../../channels/command-gating.js";
 import { recordInboundSession } from "../../channels/session.js";
 import { discordMessageActions } from "../../channels/plugins/actions/discord.js";
+import { signalMessageActions } from "../../channels/plugins/actions/signal.js";
 import { telegramMessageActions } from "../../channels/plugins/actions/telegram.js";
 import { createWhatsAppLoginTool } from "../../channels/plugins/agent-tools/whatsapp-login.js";
 import { monitorWebChannel } from "../../channels/web/index.js";
@@ -269,6 +270,7 @@ export function createPluginRuntime(): PluginRuntime {
         probeSignal,
         sendMessageSignal,
         monitorSignalProvider,
+        messageActions: signalMessageActions,
       },
       imessage: {
         monitorIMessageProvider,

src/plugins/runtime/types.ts

@@ -123,6 +123,8 @@ type TelegramMessageActions =
 type ProbeSignal = typeof import("../../signal/probe.js").probeSignal;
 type SendMessageSignal = typeof import("../../signal/send.js").sendMessageSignal;
 type MonitorSignalProvider = typeof import("../../signal/index.js").monitorSignalProvider;
+type SignalMessageActions =
+  typeof import("../../channels/plugins/actions/signal.js").signalMessageActions;
 type MonitorIMessageProvider = typeof import("../../imessage/monitor.js").monitorIMessageProvider;
 type ProbeIMessage = typeof import("../../imessage/probe.js").probeIMessage;
 type SendMessageIMessage = typeof import("../../imessage/send.js").sendMessageIMessage;
@@ -278,6 +280,7 @@ export type PluginRuntime = {
       probeSignal: ProbeSignal;
       sendMessageSignal: SendMessageSignal;
       monitorSignalProvider: MonitorSignalProvider;
+      messageActions: SignalMessageActions;
     };
     imessage: {
       monitorIMessageProvider: MonitorIMessageProvider;

src/signal/index.ts

@@ -1,3 +1,5 @@
 export { monitorSignalProvider } from "./monitor.js";
 export { probeSignal } from "./probe.js";
 export { sendMessageSignal } from "./send.js";
+export { sendReactionSignal, removeReactionSignal } from "./send-reactions.js";
+export { resolveSignalReactionLevel } from "./reaction-level.js";

src/signal/reaction-level.ts

@@ -0,0 +1,71 @@
+import type { ClawdbotConfig } from "../config/config.js";
+import { resolveSignalAccount } from "./accounts.js";
+
+export type SignalReactionLevel = "off" | "ack" | "minimal" | "extensive";
+
+export type ResolvedSignalReactionLevel = {
+  level: SignalReactionLevel;
+  /** Whether ACK reactions (e.g., 👀 when processing) are enabled. */
+  ackEnabled: boolean;
+  /** Whether agent-controlled reactions are enabled. */
+  agentReactionsEnabled: boolean;
+  /** Guidance level for agent reactions (minimal = sparse, extensive = liberal). */
+  agentReactionGuidance?: "minimal" | "extensive";
+};
+
+/**
+ * Resolve the effective reaction level and its implications for Signal.
+ *
+ * Levels:
+ * - "off": No reactions at all
+ * - "ack": Only automatic ack reactions (👀 when processing), no agent reactions
+ * - "minimal": Agent can react, but sparingly (default)
+ * - "extensive": Agent can react liberally
+ */
+export function resolveSignalReactionLevel(params: {
+  cfg: ClawdbotConfig;
+  accountId?: string;
+}): ResolvedSignalReactionLevel {
+  const account = resolveSignalAccount({
+    cfg: params.cfg,
+    accountId: params.accountId,
+  });
+  const level = (account.config.reactionLevel ?? "minimal") as SignalReactionLevel;
+
+  switch (level) {
+    case "off":
+      return {
+        level,
+        ackEnabled: false,
+        agentReactionsEnabled: false,
+      };
+    case "ack":
+      return {
+        level,
+        ackEnabled: true,
+        agentReactionsEnabled: false,
+      };
+    case "minimal":
+      return {
+        level,
+        ackEnabled: false,
+        agentReactionsEnabled: true,
+        agentReactionGuidance: "minimal",
+      };
+    case "extensive":
+      return {
+        level,
+        ackEnabled: false,
+        agentReactionsEnabled: true,
+        agentReactionGuidance: "extensive",
+      };
+    default:
+      // Fallback to minimal behavior
+      return {
+        level: "minimal",
+        ackEnabled: false,
+        agentReactionsEnabled: true,
+        agentReactionGuidance: "minimal",
+      };
+  }
+}

src/signal/send-reactions.test.ts

@@ -0,0 +1,69 @@
+import { beforeEach, describe, expect, it, vi } from "vitest";
+
+const rpcMock = vi.fn();
+const loadSendReactions = async () => await import("./send-reactions.js");
+
+vi.mock("../config/config.js", async (importOriginal) => {
+  const actual = await importOriginal<typeof import("../config/config.js")>();
+  return {
+    ...actual,
+    loadConfig: () => ({}),
+  };
+});
+
+vi.mock("./accounts.js", () => ({
+  resolveSignalAccount: () => ({
+    accountId: "default",
+    enabled: true,
+    baseUrl: "http://signal.local",
+    configured: true,
+    config: { account: "+15550001111" },
+  }),
+}));
+
+vi.mock("./client.js", () => ({
+  signalRpcRequest: (...args: unknown[]) => rpcMock(...args),
+}));
+
+describe("sendReactionSignal", () => {
+  beforeEach(() => {
+    rpcMock.mockReset().mockResolvedValue({ timestamp: 123 });
+    vi.resetModules();
+  });
+
+  it("uses recipients array and targetAuthor for uuid dms", async () => {
+    const { sendReactionSignal } = await loadSendReactions();
+    await sendReactionSignal("uuid:123e4567-e89b-12d3-a456-426614174000", 123, "🔥");
+
+    const params = rpcMock.mock.calls[0]?.[1] as Record<string, unknown>;
+    expect(rpcMock).toHaveBeenCalledWith("sendReaction", expect.any(Object), expect.any(Object));
+    expect(params.recipients).toEqual(["123e4567-e89b-12d3-a456-426614174000"]);
+    expect(params.groupIds).toBeUndefined();
+    expect(params.targetAuthor).toBe("123e4567-e89b-12d3-a456-426614174000");
+    expect(params).not.toHaveProperty("recipient");
+    expect(params).not.toHaveProperty("groupId");
+  });
+
+  it("uses groupIds array and maps targetAuthorUuid", async () => {
+    const { sendReactionSignal } = await loadSendReactions();
+    await sendReactionSignal("", 123, "✅", {
+      groupId: "group-id",
+      targetAuthorUuid: "uuid:123e4567-e89b-12d3-a456-426614174000",
+    });
+
+    const params = rpcMock.mock.calls[0]?.[1] as Record<string, unknown>;
+    expect(params.recipients).toBeUndefined();
+    expect(params.groupIds).toEqual(["group-id"]);
+    expect(params.targetAuthor).toBe("123e4567-e89b-12d3-a456-426614174000");
+  });
+
+  it("defaults targetAuthor to recipient for removals", async () => {
+    const { removeReactionSignal } = await loadSendReactions();
+    await removeReactionSignal("+15551230000", 456, "❌");
+
+    const params = rpcMock.mock.calls[0]?.[1] as Record<string, unknown>;
+    expect(params.recipients).toEqual(["+15551230000"]);
+    expect(params.targetAuthor).toBe("+15551230000");
+    expect(params.remove).toBe(true);
+  });
+});

src/signal/send-reactions.ts

@@ -0,0 +1,195 @@
+/**
+ * Signal reactions via signal-cli JSON-RPC API
+ */
+
+import { loadConfig } from "../config/config.js";
+import { resolveSignalAccount } from "./accounts.js";
+import { signalRpcRequest } from "./client.js";
+
+export type SignalReactionOpts = {
+  baseUrl?: string;
+  account?: string;
+  accountId?: string;
+  timeoutMs?: number;
+  targetAuthor?: string;
+  targetAuthorUuid?: string;
+  groupId?: string;
+};
+
+export type SignalReactionResult = {
+  ok: boolean;
+  timestamp?: number;
+};
+
+function normalizeSignalId(raw: string): string {
+  const trimmed = raw.trim();
+  if (!trimmed) return "";
+  return trimmed.replace(/^signal:/i, "").trim();
+}
+
+function normalizeSignalUuid(raw: string): string {
+  const trimmed = normalizeSignalId(raw);
+  if (!trimmed) return "";
+  if (trimmed.toLowerCase().startsWith("uuid:")) {
+    return trimmed.slice("uuid:".length).trim();
+  }
+  return trimmed;
+}
+
+function resolveTargetAuthorParams(params: {
+  targetAuthor?: string;
+  targetAuthorUuid?: string;
+  fallback?: string;
+}): { targetAuthor?: string } {
+  const candidates = [params.targetAuthor, params.targetAuthorUuid, params.fallback];
+  for (const candidate of candidates) {
+    const raw = candidate?.trim();
+    if (!raw) continue;
+    const normalized = normalizeSignalUuid(raw);
+    if (normalized) return { targetAuthor: normalized };
+  }
+  return {};
+}
+
+function resolveReactionRpcContext(
+  opts: SignalReactionOpts,
+  accountInfo?: ReturnType<typeof resolveSignalAccount>,
+) {
+  const hasBaseUrl = Boolean(opts.baseUrl?.trim());
+  const hasAccount = Boolean(opts.account?.trim());
+  const resolvedAccount =
+    accountInfo ||
+    (!hasBaseUrl || !hasAccount
+      ? resolveSignalAccount({
+          cfg: loadConfig(),
+          accountId: opts.accountId,
+        })
+      : undefined);
+  const baseUrl = opts.baseUrl?.trim() || resolvedAccount?.baseUrl;
+  if (!baseUrl) {
+    throw new Error("Signal base URL is required");
+  }
+  const account = opts.account?.trim() || resolvedAccount?.config.account?.trim();
+  return { baseUrl, account };
+}
+
+/**
+ * Send a Signal reaction to a message
+ * @param recipient - UUID or E.164 phone number of the message author
+ * @param targetTimestamp - Message ID (timestamp) to react to
+ * @param emoji - Emoji to react with
+ * @param opts - Optional account/connection overrides
+ */
+export async function sendReactionSignal(
+  recipient: string,
+  targetTimestamp: number,
+  emoji: string,
+  opts: SignalReactionOpts = {},
+): Promise<SignalReactionResult> {
+  const accountInfo = resolveSignalAccount({
+    cfg: loadConfig(),
+    accountId: opts.accountId,
+  });
+  const { baseUrl, account } = resolveReactionRpcContext(opts, accountInfo);
+
+  const normalizedRecipient = normalizeSignalUuid(recipient);
+  const groupId = opts.groupId?.trim();
+  if (!normalizedRecipient && !groupId) {
+    throw new Error("Recipient or groupId is required for Signal reaction");
+  }
+  if (!Number.isFinite(targetTimestamp) || targetTimestamp <= 0) {
+    throw new Error("Valid targetTimestamp is required for Signal reaction");
+  }
+  if (!emoji?.trim()) {
+    throw new Error("Emoji is required for Signal reaction");
+  }
+
+  const targetAuthorParams = resolveTargetAuthorParams({
+    targetAuthor: opts.targetAuthor,
+    targetAuthorUuid: opts.targetAuthorUuid,
+    fallback: normalizedRecipient,
+  });
+  if (groupId && !targetAuthorParams.targetAuthor) {
+    throw new Error("targetAuthor is required for group reactions");
+  }
+
+  const params: Record<string, unknown> = {
+    emoji: emoji.trim(),
+    targetTimestamp,
+    ...targetAuthorParams,
+  };
+  if (normalizedRecipient) params.recipients = [normalizedRecipient];
+  if (groupId) params.groupIds = [groupId];
+  if (account) params.account = account;
+
+  const result = await signalRpcRequest<{ timestamp?: number }>("sendReaction", params, {
+    baseUrl,
+    timeoutMs: opts.timeoutMs,
+  });
+
+  return {
+    ok: true,
+    timestamp: result?.timestamp,
+  };
+}
+
+/**
+ * Remove a Signal reaction from a message
+ * @param recipient - UUID or E.164 phone number of the message author
+ * @param targetTimestamp - Message ID (timestamp) to remove reaction from
+ * @param emoji - Emoji to remove
+ * @param opts - Optional account/connection overrides
+ */
+export async function removeReactionSignal(
+  recipient: string,
+  targetTimestamp: number,
+  emoji: string,
+  opts: SignalReactionOpts = {},
+): Promise<SignalReactionResult> {
+  const accountInfo = resolveSignalAccount({
+    cfg: loadConfig(),
+    accountId: opts.accountId,
+  });
+  const { baseUrl, account } = resolveReactionRpcContext(opts, accountInfo);
+
+  const normalizedRecipient = normalizeSignalUuid(recipient);
+  const groupId = opts.groupId?.trim();
+  if (!normalizedRecipient && !groupId) {
+    throw new Error("Recipient or groupId is required for Signal reaction removal");
+  }
+  if (!Number.isFinite(targetTimestamp) || targetTimestamp <= 0) {
+    throw new Error("Valid targetTimestamp is required for Signal reaction removal");
+  }
+  if (!emoji?.trim()) {
+    throw new Error("Emoji is required for Signal reaction removal");
+  }
+
+  const targetAuthorParams = resolveTargetAuthorParams({
+    targetAuthor: opts.targetAuthor,
+    targetAuthorUuid: opts.targetAuthorUuid,
+    fallback: normalizedRecipient,
+  });
+  if (groupId && !targetAuthorParams.targetAuthor) {
+    throw new Error("targetAuthor is required for group reaction removal");
+  }
+
+  const params: Record<string, unknown> = {
+    emoji: emoji.trim(),
+    targetTimestamp,
+    remove: true,
+    ...targetAuthorParams,
+  };
+  if (normalizedRecipient) params.recipients = [normalizedRecipient];
+  if (groupId) params.groupIds = [groupId];
+  if (account) params.account = account;
+
+  const result = await signalRpcRequest<{ timestamp?: number }>("sendReaction", params, {
+    baseUrl,
+    timeoutMs: opts.timeoutMs,
+  });
+
+  return {
+    ok: true,
+    timestamp: result?.timestamp,
+  };
+}