diff --git a/harbor/hooks.py b/harbor/hooks.py
index b1f2c8d..a6b7c6e 100644
--- a/harbor/hooks.py
+++ b/harbor/hooks.py
@@ -21,9 +21,13 @@ Output formats, from the hosts' own code (see integrations/README.md):
   claude, codex, deepseek  context as {"hookSpecificOutput": {"hookEventName": ..., "additionalContext": ...}}
   kimi, generic            context as plain stdout
   claude, codex, deepseek, kimi
-                           decisions as Claude-compatible JSON at exit 0 - {"hookSpecificOutput": {"permissionDecision":
-                           "deny", ...}} before a tool, {"decision": "block", "reason": ...} at a stop - because a
-                           host that runs the command through PowerShell turns exit code 2 into 1
+                           decisions before a tool as Claude-compatible JSON at exit 0 - {"hookSpecificOutput":
+                           {"permissionDecision": "deny", ...}} - because a host that runs the command through PowerShell
+                           turns exit code 2 into 1
+  claude, codex, deepseek  a stop's keep-going as {"decision": "block", "reason": ...} at exit 0
+  kimi                     a stop's keep-going as exit code 2 with the reason on stderr: Kimi's agent-core reads a
+                           top-level {"decision": "block"} as allow, and it runs hooks through cmd.exe, which passes
+                           exit code 2 through. Kimi honours one keep-going per turn
   opencode, generic        decisions as exit code 2 with the reason on stderr (the OpenCode plugin spawns directly)
 
 Hooks fail open: if Harbor itself is broken they print a warning to stderr and let the agent continue.
@@ -39,6 +43,7 @@ from .core import Harbor
 BLOCK = 2
 JSON_CONTEXT_HOSTS = ("claude", "codex", "deepseek")
 JSON_DECISION_HOSTS = ("claude", "codex", "deepseek", "kimi")
+EXIT_CODE_STOP_HOSTS = ("kimi",)          # a stop's keep-going: exit 2 + stderr (see above)
 EVENT_NAMES = {"session-start": "SessionStart", "prompt-submit": "UserPromptSubmit"}
 
 
@@ -181,7 +186,7 @@ def _deny_tool(host, text):
 
 
 def _keep_going(host, text):
-    if host in JSON_DECISION_HOSTS:
+    if host in JSON_DECISION_HOSTS and host not in EXIT_CODE_STOP_HOSTS:
         print(json.dumps({"decision": "block", "reason": text}))
         return 0
     print(text, file=sys.stderr)
diff --git a/tests/test_review3.py b/tests/test_review3.py
index 8c05a44..2702af5 100644
--- a/tests/test_review3.py
+++ b/tests/test_review3.py
@@ -1,4 +1,5 @@
 """Regression tests for the correctness review of rounds five and six."""
+import json
 import os
 import re
 import shutil
@@ -358,6 +359,21 @@ class AttentionWithoutFalseAlarms(HarborCase):
         self.assertFalse(any(a["kind"] == "ack_overdue" and f"#{m['id']}" in a["text"] for a in self.h.attention()))
 
 
+class KimiStopKeepGoing(unittest.TestCase):
+    def test_kimi_gets_exit_2_and_stderr_others_get_json(self):
+        import contextlib, io
+        from harbor import hooks
+        out, err = io.StringIO(), io.StringIO()
+        with contextlib.redirect_stdout(out), contextlib.redirect_stderr(err):
+            code = hooks._keep_going("kimi", "keep going")
+        self.assertEqual((code, out.getvalue(), err.getvalue().strip()), (2, "", "keep going"))
+        out = io.StringIO()
+        with contextlib.redirect_stdout(out):
+            code = hooks._keep_going("codex", "keep going")
+        self.assertEqual(code, 0)
+        self.assertEqual(json.loads(out.getvalue())["decision"], "block")
+
+
 class HooksVisible(HarborCase):
     def test_mcp_without_hooks_needs_attention(self):
         self.h.connect("Codex", "mcp", "codex")