diff --git a/docs/gateway/protocol.md b/docs/gateway/protocol.md
index 00b2786b688..87cfc618528 100644
--- a/docs/gateway/protocol.md
+++ b/docs/gateway/protocol.md
@@ -624,6 +624,9 @@ terminal summary, and sanitized error text.
 - `agent` requests can include `deliver=true` to request outbound delivery.
 - `bestEffortDeliver=false` keeps strict behavior: unresolved or internal-only delivery targets return `INVALID_REQUEST`.
 - `bestEffortDeliver=true` allows fallback to session-only execution when no external deliverable route can be resolved (for example internal/webchat sessions or ambiguous multi-channel configs).
+- Final `agent` results may include `result.deliveryStatus` when delivery was
+  requested, using the same `sent`, `suppressed`, `partial_failed`, and `failed`
+  statuses documented for [`openclaw agent --json --deliver`](/cli/agent#json-delivery-status).
 
 ## Versioning
 
diff --git a/docs/tools/agent-send.md b/docs/tools/agent-send.md
index daf53324897..5fbf2c906ce 100644
--- a/docs/tools/agent-send.md
+++ b/docs/tools/agent-send.md
@@ -77,6 +77,9 @@ programmatic delivery.
   preserve isolation; direct chats collapse to `main`).
 - Thinking and verbose flags persist into the session store.
 - Output: plain text by default, or `--json` for structured payload + metadata.
+- With `--json --deliver`, the JSON includes delivery status for sent,
+  suppressed, partial, and failed sends. See
+  [JSON delivery status](/cli/agent#json-delivery-status).
 
 ## Examples
 
diff --git a/src/agents/pi-embedded-runner/delivery-evidence.ts b/src/agents/pi-embedded-runner/delivery-evidence.ts
index b4a502dc946..27b78576b1a 100644
--- a/src/agents/pi-embedded-runner/delivery-evidence.ts
+++ b/src/agents/pi-embedded-runner/delivery-evidence.ts
@@ -11,6 +11,10 @@ type AgentPayloadLike = {
 
 export type AgentDeliveryEvidence = {
   payloads?: unknown;
+  deliveryStatus?: {
+    status?: unknown;
+    errorMessage?: unknown;
+  };
   didSendViaMessagingTool?: unknown;
   messagingToolSentTexts?: unknown;
   messagingToolSentMediaUrls?: unknown;
@@ -106,3 +110,15 @@ export function hasOutboundDeliveryEvidence(result: AgentDeliveryEvidence): bool
     hasPositiveNumber(result.meta?.toolSummary?.calls)
   );
 }
+
+export function getAgentCommandDeliveryFailure(result: AgentDeliveryEvidence): string | undefined {
+  const status = result.deliveryStatus?.status;
+  if (status !== "failed" && status !== "partial_failed") {
+    return undefined;
+  }
+  const message = result.deliveryStatus?.errorMessage;
+  if (hasNonEmptyString(message)) {
+    return message;
+  }
+  return status === "partial_failed" ? "agent delivery partially failed" : "agent delivery failed";
+}
diff --git a/src/agents/subagent-announce-delivery.test.ts b/src/agents/subagent-announce-delivery.test.ts
index 081e193985b..ea3ee5df722 100644
--- a/src/agents/subagent-announce-delivery.test.ts
+++ b/src/agents/subagent-announce-delivery.test.ts
@@ -732,6 +732,48 @@ describe("deliverSubagentAnnouncement completion delivery", () => {
     expect(sendMessage).not.toHaveBeenCalled();
   });
 
+  it("reports requester-agent delivery failure even when output stayed visible", async () => {
+    const callGateway = createGatewayMock({
+      result: {
+        payloads: [{ text: "Tests passed and the PR is ready for review." }],
+        deliveryStatus: {
+          status: "failed",
+          errorMessage: "Slack send failed: channel not found",
+        },
+      },
+    });
+    const sendMessage = createSendMessageMock();
+    const result = await deliverSlackThreadAnnouncement({
+      callGateway,
+      sendMessage,
+      sessionId: "requester-session-4",
+      isActive: false,
+      expectsCompletionMessage: true,
+      directIdempotencyKey: "announce-thread-delivery-status-failed",
+      internalEvents: [
+        {
+          type: "task_completion",
+          source: "subagent",
+          childSessionKey: "agent:worker:subagent:child",
+          childSessionId: "child-session-id",
+          announceType: "subagent task",
+          taskLabel: "thread completion smoke",
+          status: "ok",
+          statusLabel: "completed successfully",
+          result: "child completion output",
+          replyInstruction: "Summarize the result.",
+        },
+      ],
+    });
+
+    expectRecordFields(result, {
+      delivered: false,
+      path: "direct",
+      error: "Slack send failed: channel not found",
+    });
+    expect(sendMessage).not.toHaveBeenCalled();
+  });
+
   it("does not raw-send grouped child results when requester-agent output is empty", async () => {
     const callGateway = createGatewayMock({
       result: {
diff --git a/src/agents/subagent-announce-delivery.ts b/src/agents/subagent-announce-delivery.ts
index 847c41149df..c03659ef12d 100644
--- a/src/agents/subagent-announce-delivery.ts
+++ b/src/agents/subagent-announce-delivery.ts
@@ -23,6 +23,7 @@ import {
 import { buildAnnounceIdempotencyKey, resolveQueueAnnounceId } from "./announce-idempotency.js";
 import type { AgentInternalEvent } from "./internal-events.js";
 import {
+  getAgentCommandDeliveryFailure,
   getGatewayAgentResult,
   hasMessagingToolDeliveryEvidence,
   hasVisibleAgentPayload,
@@ -571,6 +572,11 @@ function hasGatewayAgentMessagingToolDelivery(response: unknown): boolean {
   return Boolean(result && hasMessagingToolDeliveryEvidence(result));
 }
 
+function getGatewayAgentCommandDeliveryFailure(response: unknown): string | undefined {
+  const result = getGatewayAgentResult(response);
+  return result ? getAgentCommandDeliveryFailure(result) : undefined;
+}
+
 function isGatewayAgentRunPending(response: unknown): boolean {
   if (!response || typeof response !== "object") {
     return false;
@@ -850,6 +856,16 @@ async function sendSubagentAnnounceDirectly(params: {
         error: "completion agent did not deliver through the message tool",
       };
     }
+    const directDeliveryFailure = shouldDeliverAgentFinal
+      ? getGatewayAgentCommandDeliveryFailure(directAnnounceResponse)
+      : undefined;
+    if (directDeliveryFailure) {
+      return {
+        delivered: false,
+        path: "direct",
+        error: directDeliveryFailure,
+      };
+    }
     if (
       params.expectsCompletionMessage &&
       shouldDeliverAgentFinal &&
diff --git a/src/commands/agent-via-gateway.ts b/src/commands/agent-via-gateway.ts
index bad292a6de4..90f69760c0b 100644
--- a/src/commands/agent-via-gateway.ts
+++ b/src/commands/agent-via-gateway.ts
@@ -23,6 +23,7 @@ type AgentGatewayResult = {
     mediaUrl?: string | null;
     mediaUrls?: string[];
   }>;
+  deliveryStatus?: unknown;
   meta?: unknown;
 };