Outbound: allow text-only plugin adapters

CHANGELOG.md

@@ -75,6 +75,7 @@ Docs: https://docs.openclaw.ai
 - iOS/Concurrency stability: replace risky shared-state access in camera and gateway connection paths with lock-protected access patterns to reduce crash risk under load. (#33241) thanks @mbelinky.
 - iOS/Security guardrails: limit production API-key sourcing to app config and make deep-link confirmation prompts safer by coalescing queued requests instead of silently dropping them. (#33031) thanks @mbelinky.
 - iOS/TTS playback fallback: keep voice playback resilient by switching from PCM to MP3 when provider format support is unavailable, while avoiding sticky fallback on generic local playback errors. (#33032) thanks @mbelinky.
+- Plugin outbound/text-only adapter compatibility: allow direct-delivery channel plugins that only implement `sendText` (no `sendMedia`) to remain outbound-capable, and gracefully fall back to text delivery for media payloads when `sendMedia` is absent. (#32788) thanks @liuxiaopai-ai.
 - Telegram/multi-account default routing clarity: warn only for ambiguous (2+) account setups without an explicit default, add `openclaw doctor` warnings for missing/invalid multi-account defaults across channels, and document explicit-default guidance for channel routing and Telegram config. (#32544) thanks @Sid-Qin.
 - Telegram/plugin outbound hook parity: run `message_sending` + `message_sent` in Telegram reply delivery, include reply-path hook metadata (`mediaUrls`, `threadId`), and report `message_sent.success=false` when hooks blank text and no outbound message is delivered. (#32649) Thanks @KimGLee.
 - CLI/Coding-agent reliability: switch default `claude-cli` non-interactive args to `--permission-mode bypassPermissions`, auto-normalize legacy `--dangerously-skip-permissions` backend overrides to the modern permission-mode form, align coding-agent + live-test docs with the non-PTY Claude path, and emit session system-event heartbeat notices when CLI watchdog no-output timeouts terminate runs. (#28610, #31149, #34055). Thanks @niceysam, @cryptomaltese and @vincentkoc.

src/infra/outbound/deliver.test.ts

@@ -890,6 +890,37 @@ describe("deliverOutboundPayloads", () => {
     expect(results).toEqual([{ channel: "line", messageId: "ln-1" }]);
   });
 
+  it("falls back to sendText when plugin outbound omits sendMedia", async () => {
+    const sendText = vi.fn().mockResolvedValue({ channel: "matrix", messageId: "mx-1" });
+    setActivePluginRegistry(
+      createTestRegistry([
+        {
+          pluginId: "matrix",
+          source: "test",
+          plugin: createOutboundTestPlugin({
+            id: "matrix",
+            outbound: { deliveryMode: "direct", sendText },
+          }),
+        },
+      ]),
+    );
+
+    const results = await deliverOutboundPayloads({
+      cfg: {},
+      channel: "matrix",
+      to: "!room:1",
+      payloads: [{ text: "caption", mediaUrl: "https://example.com/file.png" }],
+    });
+
+    expect(sendText).toHaveBeenCalledTimes(1);
+    expect(sendText).toHaveBeenCalledWith(
+      expect.objectContaining({
+        text: "caption",
+      }),
+    );
+    expect(results).toEqual([{ channel: "matrix", messageId: "mx-1" }]);
+  });
+
   it("emits message_sent failure when delivery errors", async () => {
     hookMocks.runner.hasHooks.mockReturnValue(true);
     const sendWhatsApp = vi.fn().mockRejectedValue(new Error("downstream failed"));

src/infra/outbound/deliver.ts

@@ -149,7 +149,7 @@ function createPluginHandler(
   params: ChannelHandlerParams & { outbound?: ChannelOutboundAdapter },
 ): ChannelHandler | null {
   const outbound = params.outbound;
-  if (!outbound?.sendText || !outbound?.sendMedia) {
+  if (!outbound?.sendText) {
     return null;
   }
   const baseCtx = createChannelOutboundContextBase(params);
@@ -183,12 +183,19 @@ function createPluginHandler(
         ...resolveCtx(overrides),
         text,
       }),
-    sendMedia: async (caption, mediaUrl, overrides) =>
-      sendMedia({
+    sendMedia: async (caption, mediaUrl, overrides) => {
+      if (sendMedia) {
+        return sendMedia({
+          ...resolveCtx(overrides),
+          text: caption,
+          mediaUrl,
+        });
+      }
+      return sendText({
         ...resolveCtx(overrides),
         text: caption,
-        mediaUrl,
-      }),
+      });
+    },
   };
 }