fix(slack): avoid generic inline button prompt hint

CHANGELOG.md

@@ -24,6 +24,7 @@ Docs: https://docs.openclaw.ai
 ### Fixes
 
 - Models/UI: hide unauthenticated providers from the default Web chat, `/models`, and model setup pickers while keeping explicit full-catalog browse paths through `view: "all"`, `/models <provider> all`, and `models list --all`. Fixes #74423. Thanks @guarismo and @SymbolStar.
+- Slack/prompts: rely on Slack `interactiveReplies` guidance instead of generic `inlineButtons` config hints so enabled Slack button directives are not contradicted. Fixes #46647. Thanks @jeremykoerber.
 - Slack/reactions: treat duplicate `already_reacted` responses as idempotent success so repeated agent reaction adds no longer surface as tool failures. Fixes #69005. Thanks @shipitsteven and @martingarramon.
 - Slack/tools: expose `fileId` in the shared message tool schema so `download-file` can receive Slack attachment IDs from inbound placeholders. Fixes #45574. Thanks @chadvegas.
 - Exec: reject invalid per-call `host` values instead of silently falling back to the default target, so hostname-like values fail before commands run. Fixes #74426. Thanks @scr00ge-00 and @vyctorbrzezowski.

src/agents/system-prompt.test.ts

@@ -759,6 +759,26 @@ describe("buildAgentSystemPrompt", () => {
     expect(prompt).toContain("`style` can be `primary`, `success`, or `danger`");
   });
 
+  it("uses Slack interactive reply hints instead of generic inline button config guidance", () => {
+    const prompt = buildAgentSystemPrompt({
+      workspaceDir: "/tmp/openclaw",
+      toolNames: ["message"],
+      runtimeInfo: {
+        channel: "slack",
+      },
+      messageToolHints: [
+        "- Prefer Slack buttons/selects for 2-5 discrete choices or parameter picks instead of asking the user to type one.",
+        "- Slack interactive replies: use `[[slack_buttons: Label:value, Other:other]]` to add action buttons that route clicks back as Slack interaction system events.",
+      ],
+    });
+
+    expect(prompt).toContain("Slack interactive replies");
+    expect(prompt).toContain("[[slack_buttons: Label:value, Other:other]]");
+    expect(prompt).not.toContain("Inline buttons not enabled for slack");
+    expect(prompt).not.toContain("slack.capabilities.inlineButtons");
+    expect(prompt).not.toContain("buttons=[[{text,callback_data,style?}]]");
+  });
+
   it("describes message-tool-only source delivery without requiring target", () => {
     const prompt = buildAgentSystemPrompt({
       workspaceDir: "/tmp/openclaw",

src/agents/system-prompt.ts

@@ -346,6 +346,7 @@ function buildMessagingSection(params: {
     return [];
   }
   const messageToolOnly = params.sourceReplyDeliveryMode === "message_tool_only";
+  const showGenericInlineButtonHint = params.runtimeChannel !== "slack";
   const hasSessionsSpawn = params.availableTools.has("sessions_spawn");
   const hasSubagents = params.availableTools.has("subagents");
   const subagentOrchestrationGuidance = hasSessionsSpawn
@@ -376,11 +377,13 @@ function buildMessagingSection(params: {
           messageToolOnly
             ? "- If you use `message` (`action=send`) to deliver visible output, do not repeat that visible content in your final answer; final answers are private in this mode."
             : `- If you use \`message\` (\`action=send\`) to deliver your user-visible reply, respond with ONLY: ${SILENT_REPLY_TOKEN} (avoid duplicate replies).`,
-          params.inlineButtonsEnabled
-            ? "- Inline buttons supported. Use `action=send` with `buttons=[[{text,callback_data,style?}]]`; `style` can be `primary`, `success`, or `danger`."
-            : params.runtimeChannel
-              ? `- Inline buttons not enabled for ${params.runtimeChannel}. If you need them, ask to set ${params.runtimeChannel}.capabilities.inlineButtons ("dm"|"group"|"all"|"allowlist").`
-              : "",
+          showGenericInlineButtonHint
+            ? params.inlineButtonsEnabled
+              ? "- Inline buttons supported. Use `action=send` with `buttons=[[{text,callback_data,style?}]]`; `style` can be `primary`, `success`, or `danger`."
+              : params.runtimeChannel
+                ? `- Inline buttons not enabled for ${params.runtimeChannel}. If you need them, ask to set ${params.runtimeChannel}.capabilities.inlineButtons ("dm"|"group"|"all"|"allowlist").`
+                : ""
+            : "",
           ...(params.messageToolHints ?? []),
         ]
           .filter(Boolean)