diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 7dfd1d0..49bf3ce 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -1,4 +1,4 @@
-name: Test
+name: CI
 
 on:
   push:
@@ -27,3 +27,24 @@ jobs:
 
       - name: Lint
         run: pip install ruff && ruff check molecule_agent/ molecule_plugin/
+
+  all-required:
+    name: all-required
+    needs: [test]
+    # required: all matrix variants must succeed
+    if: always()
+    runs-on: ubuntu-latest
+    steps:
+      - name: Verify all required jobs passed
+        run: |
+          # Collect results from all test matrix variants
+          results="${{ needs.test.result }}"
+          echo "Matrix results: $results"
+          # Any result that is not "success" is a failure condition
+          if [[ "$results" == *"failure"* ]] || \
+             [[ "$results" == *"cancelled"* ]] || \
+             [[ "$results" == *"skipped"* ]]; then
+            echo "One or more required jobs did not succeed: $results"
+            exit 1
+          fi
+          echo "All required jobs passed."
diff --git a/CLAUDE.md b/CLAUDE.md
index 1ebea23..2f8044e 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -219,6 +219,21 @@ python -m molecule_agent verify-sha256 ./my-plugin-dir
   shut the loop down cleanly. Cursor optionally persisted to `--cursor-file` so
   restarts resume from the last-seen activity row.
 
+- **`run_heartbeat_loop(stop_event)` and `run_agent_loop(stop_event)`** (KI-009):
+  Both loops accept an optional `threading.Event` parameter. When the event is set
+  from another thread, the loop exits immediately with return value `"stopped"`.
+  The check runs before `max_iterations` so a signal always wins. Useful for
+  embedding the client in a long-running process that needs a clean shutdown path:
+  ```python
+  import threading, time
+  from molecule_agent import RemoteAgentClient
+  stop = threading.Event()
+  client = RemoteAgentClient(...)
+  # Signal-safe: call stop.set() from any thread to stop the loop
+  terminal = client.run_heartbeat_loop(stop_event=stop)
+  # terminal == "stopped" if stop.set() was called, else "paused"/"deleted"
+  ```
+
 ---
 
 ## Relevant platform docs
diff --git a/molecule_agent/README.md b/molecule_agent/README.md
index 535125b..0c2e711 100644
--- a/molecule_agent/README.md
+++ b/molecule_agent/README.md
@@ -54,8 +54,11 @@ secrets = client.pull_secrets()
 client.install_plugin("molecule-dev")
 client.install_plugin("my-plugin", source="github://acme/my-plugin")
 
-# 4. Run the heartbeat + state-poll loop until the platform pauses/deletes us.
-terminal = client.run_heartbeat_loop()
+# 4. Run the heartbeat + state-poll loop until the platform pauses/deletes us
+#    or until stop_event.set() is called from another thread.
+import threading
+stop = threading.Event()
+terminal = client.run_heartbeat_loop(stop_event=stop)
 print(f"loop exited: {terminal}")
 ```
 
@@ -75,8 +78,8 @@ A runnable demo with full setup walkthrough lives at
 | `call_peer(target, message)` | 30.6 | Direct A2A with proxy fallback; response may be wrapped in OFFSEC-003 boundary markers — use ``strip_a2a_boundary()`` to remove them |
 | `fetch_inbound(since_id=…)` | 30.8c | One-shot poll of `/workspaces/:id/activity` for inbound A2A |
 | `reply(msg, text)` | 30.8c | Smart-routes reply to `/notify` (canvas user) or `/a2a` (peer) |
-| `run_heartbeat_loop()` | combo | Drives heartbeat + state-poll on a timer; exits on pause/delete |
-| `run_agent_loop(handler)` | combo | Heartbeat + state + **inbound dispatch**; exits on pause/delete |
+| `run_heartbeat_loop(stop_event=None)` | combo | Drives heartbeat + state-poll on a timer; exits on pause/delete or when `stop_event.set()` is called from another thread (KI-009) |
+| `run_agent_loop(handler, stop_event=None)` | combo | Heartbeat + state + **inbound dispatch**; exits on pause/delete or when `stop_event.set()` is called from another thread (KI-009) |
 
 ## Inbound delivery — push vs poll
 
diff --git a/molecule_agent/__init__.py b/molecule_agent/__init__.py
index a9f4f83..2b50dc6 100644
--- a/molecule_agent/__init__.py
+++ b/molecule_agent/__init__.py
@@ -9,6 +9,7 @@ and detect pause/resume/delete — all via the Phase 30.1–30.5 HTTP contract.
 
 Intended usage::
 
+    import threading
     from molecule_agent import RemoteAgentClient
 
     client = RemoteAgentClient(
@@ -18,7 +19,8 @@ Intended usage::
     )
     client.register()                # mints + persists the auth token
     env = client.pull_secrets()      # decrypted secrets dict
-    client.run_heartbeat_loop()      # background heartbeat + state-poll
+    stop = threading.Event()
+    client.run_heartbeat_loop(stop_event=stop)  # background heartbeat; stop.set() to exit cleanly
 
 See ``sdk/python/examples/remote-agent/`` for a runnable demo.