From 9212dfb52baf907546da080359b3f89d3b6dbb53 Mon Sep 17 00:00:00 2001
From: Charles Packer <packercharles@gmail.com>
Date: Sun, 16 Nov 2025 23:44:06 -0800
Subject: [PATCH] feat: add --sleeptime CLI flag (#94)

Co-authored-by: Letta <noreply@letta.com>
---
 src/agent/create.ts | 3 +--
 src/headless.ts     | 6 ++++--
 src/index.ts        | 7 +++++--
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/agent/create.ts b/src/agent/create.ts
index f3f43bb..7663a59 100644
--- a/src/agent/create.ts
+++ b/src/agent/create.ts
@@ -239,10 +239,9 @@ export async function createAgent(
 
   // Update persona block for sleeptime agents (only if persona was newly created, not shared)
   if (enableSleeptime && newGlobalBlockIds.persona) {
-    await client.agents.blocks.modify("persona", {
+    await client.agents.blocks.modify("memory_persona", {
       agent_id: agent.id,
       value: SLEEPTIME_MEMORY_PERSONA,
-      label: "memory_persona",
       description: "Instructions for the sleep-time memory management agent",
     });
   }
diff --git a/src/headless.ts b/src/headless.ts
index 5d4ae55..4e2c914 100644
--- a/src/headless.ts
+++ b/src/headless.ts
@@ -49,6 +49,7 @@ export async function handleHeadlessCommand(
       skills: { type: "string" },
       link: { type: "boolean" },
       unlink: { type: "boolean" },
+      sleeptime: { type: "boolean" },
     },
     strict: false,
     allowPositionals: true,
@@ -81,6 +82,7 @@ export async function handleHeadlessCommand(
   const specifiedAgentId = values.agent as string | undefined;
   const shouldContinue = values.continue as boolean | undefined;
   const forceNew = values.new as boolean | undefined;
+  const sleeptimeFlag = (values.sleeptime as boolean | undefined) ?? undefined;
 
   // Priority 1: Try to use --agent specified ID
   if (specifiedAgentId) {
@@ -102,7 +104,7 @@ export async function handleHeadlessCommand(
       forceNew,
       skillsDirectory,
       settings.parallelToolCalls,
-      settings.enableSleeptime,
+      sleeptimeFlag ?? settings.enableSleeptime,
     );
   }
 
@@ -143,7 +145,7 @@ export async function handleHeadlessCommand(
       false,
       skillsDirectory,
       settings.parallelToolCalls,
-      settings.enableSleeptime,
+      sleeptimeFlag ?? settings.enableSleeptime,
     );
   }
 
diff --git a/src/index.ts b/src/index.ts
index 9cc17c7..c3717a9 100755
--- a/src/index.ts
+++ b/src/index.ts
@@ -33,6 +33,7 @@ OPTIONS
   --output-format <fmt> Output format for headless mode (text, json, stream-json)
                         Default: text
   --skills <path>       Custom path to skills directory (default: .skills in current directory)
+  --sleeptime           Enable sleeptime memory management (only for new agents)
 
 BEHAVIOR
   By default, letta auto-resumes the last agent used in the current directory
@@ -95,6 +96,7 @@ async function main() {
         skills: { type: "string" },
         link: { type: "boolean" },
         unlink: { type: "boolean" },
+        sleeptime: { type: "boolean" },
       },
       strict: true,
       allowPositionals: true,
@@ -137,6 +139,7 @@ async function main() {
   const specifiedAgentId = (values.agent as string | undefined) ?? null;
   const specifiedModel = (values.model as string | undefined) ?? undefined;
   const skillsDirectory = (values.skills as string | undefined) ?? undefined;
+  const sleeptimeFlag = (values.sleeptime as boolean | undefined) ?? undefined;
   const isHeadless = values.prompt || values.run || !process.stdin.isTTY;
 
   // Check if API key is configured
@@ -364,7 +367,7 @@ async function main() {
             forceNew,
             skillsDirectory,
             settings.parallelToolCalls,
-            settings.enableSleeptime,
+            sleeptimeFlag ?? settings.enableSleeptime,
           );
         }
 
@@ -410,7 +413,7 @@ async function main() {
             false,
             skillsDirectory,
             settings.parallelToolCalls,
-            settings.enableSleeptime,
+            sleeptimeFlag ?? settings.enableSleeptime,
           );
         }