diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3738b2c03..403ec062a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@
 - CI: fix lint ordering after merge cleanup (#156) — thanks @steipete.
 - CI: consolidate checks to avoid redundant installs (#144) — thanks @thewilloftheshadow.
 - WhatsApp: support `gifPlayback` for MP4 GIF sends via CLI/gateway.
+- Sessions: prevent `sessions_send` timeouts by running nested agent turns on a separate lane.
 - Auto-reply: drop final payloads when block streaming to avoid duplicate Discord sends.
 - Auto-reply: fix typing TTL to 2 minutes and log TTL with s/m units.
 - Bash tool: default auto-background delay to 10s.
diff --git a/src/agents/clawdis-tools.sessions.test.ts b/src/agents/clawdis-tools.sessions.test.ts
index 9fab95ac0..c30d5a71b 100644
--- a/src/agents/clawdis-tools.sessions.test.ts
+++ b/src/agents/clawdis-tools.sessions.test.ts
@@ -183,6 +183,9 @@ describe("sessions tools", () => {
       (call) => call.method === "chat.history",
     );
     expect(agentCalls).toHaveLength(2);
+    for (const call of agentCalls) {
+      expect(call.params).toMatchObject({ lane: "nested" });
+    }
     expect(waitCalls).toHaveLength(1);
     expect(historyOnlyCalls).toHaveLength(1);
     expect(waitCalls[0]?.params).toMatchObject({ afterMs: 1234 });
diff --git a/src/agents/clawdis-tools.ts b/src/agents/clawdis-tools.ts
index 3c9c367f0..7e2ca4d15 100644
--- a/src/agents/clawdis-tools.ts
+++ b/src/agents/clawdis-tools.ts
@@ -2748,6 +2748,7 @@ function createSessionsSendTool(): AnyAgentTool {
         sessionKey: resolvedKey,
         idempotencyKey,
         deliver: false,
+        lane: "nested",
       };
 
       if (timeoutSeconds === 0) {
diff --git a/src/commands/agent.ts b/src/commands/agent.ts
index 1300f493b..83ca4e1f9 100644
--- a/src/commands/agent.ts
+++ b/src/commands/agent.ts
@@ -60,6 +60,7 @@ type AgentCommandOpts = {
   provider?: string; // delivery provider (whatsapp|telegram|...)
   bestEffortDeliver?: boolean;
   abortSignal?: AbortSignal;
+  lane?: string;
 };
 
 type SessionResolution = {
@@ -383,6 +384,7 @@ export async function agentCommand(
       verboseLevel: resolvedVerboseLevel,
       timeoutMs,
       runId: sessionId,
+      lane: opts.lane,
       abortSignal: opts.abortSignal,
       onAgentEvent: (evt) => {
         emitAgentEvent({
diff --git a/src/gateway/protocol/schema.ts b/src/gateway/protocol/schema.ts
index cd1de8060..796cbac98 100644
--- a/src/gateway/protocol/schema.ts
+++ b/src/gateway/protocol/schema.ts
@@ -208,6 +208,7 @@ export const AgentParamsSchema = Type.Object(
     deliver: Type.Optional(Type.Boolean()),
     channel: Type.Optional(Type.String()),
     timeout: Type.Optional(Type.Integer({ minimum: 0 })),
+    lane: Type.Optional(Type.String()),
     idempotencyKey: NonEmptyString,
   },
   { additionalProperties: false },
diff --git a/src/gateway/server-methods.ts b/src/gateway/server-methods.ts
index 02c0dc002..ca4af6440 100644
--- a/src/gateway/server-methods.ts
+++ b/src/gateway/server-methods.ts
@@ -2930,6 +2930,7 @@ export async function handleGatewayRequest(
         thinking?: string;
         deliver?: boolean;
         channel?: string;
+        lane?: string;
         idempotencyKey: string;
         timeout?: number;
       };
@@ -3118,6 +3119,7 @@ export async function handleGatewayRequest(
           timeout: params.timeout?.toString(),
           bestEffortDeliver,
           surface: "VoiceWake",
+          lane: params.lane,
         },
         defaultRuntime,
         deps,