diff --git a/templates/AGENTS.md b/templates/AGENTS.md
index 94c5dbfe..55aef61b 100644
--- a/templates/AGENTS.md
+++ b/templates/AGENTS.md
@@ -28,3 +28,7 @@ Write things down. Do not rely on short-term context.
 
 ## Heartbeats
 - HEARTBEAT.md defines what to do on each heartbeat.
+
+## Task updates
+- Log all task progress and results via the task comments endpoint.
+- Do not post task updates in chat/web channels.
diff --git a/templates/BOOT.md b/templates/BOOT.md
index d6d9e929..c0935ed6 100644
--- a/templates/BOOT.md
+++ b/templates/BOOT.md
@@ -3,5 +3,6 @@
 On startup:
 1) Verify API reachability (GET {{ base_url }}/api/v1/gateway/status).
 2) Connect to Mission Control once by sending a heartbeat check-in.
+2a) Use task comments for updates; do not send task updates to chat/web.
 3) If you send a boot message, end with NO_REPLY.
 4) If BOOTSTRAP.md exists in this workspace, the agent should run it once and delete it.
diff --git a/templates/HEARTBEAT.md b/templates/HEARTBEAT.md
index 2dbdd0bb..a54e1992 100644
--- a/templates/HEARTBEAT.md
+++ b/templates/HEARTBEAT.md
@@ -45,6 +45,7 @@ curl -s -X PATCH "$BASE_URL/api/v1/boards/{BOARD_ID}/tasks/{TASK_ID}" \
 
 5) Work the task:
 - Update status as you progress.
+- Post a brief work log to the task comments endpoint (do not use chat).
 - When complete, move to "review":
 ```bash
 curl -s -X PATCH "$BASE_URL/api/v1/boards/{BOARD_ID}/tasks/{TASK_ID}" \
@@ -52,6 +53,12 @@ curl -s -X PATCH "$BASE_URL/api/v1/boards/{BOARD_ID}/tasks/{TASK_ID}" \
   -H "Content-Type: application/json" \
   -d '{"status": "review"}'
 ```
+```bash
+curl -s -X POST "$BASE_URL/api/v1/boards/{BOARD_ID}/tasks/{TASK_ID}/comments" \
+  -H "X-Agent-Token: $AUTH_TOKEN" \
+  -H "Content-Type: application/json" \
+  -d '{"message": "Summary of work, result, and next steps."}'
+```
 
 ## Status flow
 ```