diff --git a/README.md b/README.md
index 9134872..cb65b6f 100644
--- a/README.md
+++ b/README.md
@@ -133,6 +133,8 @@ Useful flags:
 - `--once` run one polling cycle and exit
 - `--retry-failed` retry failed PRs without waiting for a new head SHA
 
+Note: the monitor dispatches Codex through explicit `--task/--agent/--base` flags for compatibility with both older and newer `scripts/codex-agent.sh` argument parsing.
+
 ## Important behavior defaults
 
 - No command defaults to `gx status`.
diff --git a/scripts/review-bot-watch.sh b/scripts/review-bot-watch.sh
index a41cefd..dd43e5d 100755
--- a/scripts/review-bot-watch.sh
+++ b/scripts/review-bot-watch.sh
@@ -262,7 +262,11 @@ process_one_pr() {
 
   echo "[review-bot-watch] Dispatching Codex agent for PR #${pr} (${head_branch})"
   set +e
-  bash "$repo_root/scripts/codex-agent.sh" "$task_name" "$AGENT_NAME" "$BASE_BRANCH" -- exec "$prompt"
+  bash "$repo_root/scripts/codex-agent.sh" \
+    --task "$task_name" \
+    --agent "$AGENT_NAME" \
+    --base "$BASE_BRANCH" \
+    -- exec "$prompt"
   local exit_code="$?"
   set -e
 
diff --git a/templates/scripts/review-bot-watch.sh b/templates/scripts/review-bot-watch.sh
index a41cefd..dd43e5d 100755
--- a/templates/scripts/review-bot-watch.sh
+++ b/templates/scripts/review-bot-watch.sh
@@ -262,7 +262,11 @@ process_one_pr() {
 
   echo "[review-bot-watch] Dispatching Codex agent for PR #${pr} (${head_branch})"
   set +e
-  bash "$repo_root/scripts/codex-agent.sh" "$task_name" "$AGENT_NAME" "$BASE_BRANCH" -- exec "$prompt"
+  bash "$repo_root/scripts/codex-agent.sh" \
+    --task "$task_name" \
+    --agent "$AGENT_NAME" \
+    --base "$BASE_BRANCH" \
+    -- exec "$prompt"
   local exit_code="$?"
   set -e
 
diff --git a/test/install.test.js b/test/install.test.js
index 96807de..bdaee80 100644
--- a/test/install.test.js
+++ b/test/install.test.js
@@ -293,6 +293,14 @@ test('review-bot-watch script prints help after setup', () => {
   assert.match(helpResult.stdout, /Continuously monitor GitHub pull requests targeting a base branch/);
 });
 
+test('review-bot-watch uses explicit codex-agent flags for argument parsing compatibility', () => {
+  const script = fs.readFileSync(path.resolve(__dirname, '..', 'scripts', 'review-bot-watch.sh'), 'utf8');
+  assert.match(script, /--task \"\$task_name\"/);
+  assert.match(script, /--agent \"\$AGENT_NAME\"/);
+  assert.match(script, /--base \"\$BASE_BRANCH\"/);
+  assert.match(script, /-- exec \"\$prompt\"/);
+});
+
 test('setup blocks in-place maintenance writes on protected main after initialization', () => {
   const repoDir = initRepoOnBranch('main');