diff --git a/.github/workflows/opencode-review.yml b/.github/workflows/opencode-review.yml
index e73a7a0000..bb2ccfdb74 100644
--- a/.github/workflows/opencode-review.yml
+++ b/.github/workflows/opencode-review.yml
@@ -327,6 +327,8 @@ jobs:
           HEAD_SHA: ${{ github.event.pull_request.head.sha }}
           PR_DRAFT: ${{ github.event.pull_request.draft }}
           BASE_BRANCH: ${{ github.event.pull_request.base.ref }}
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+          HEAD_REF: ${{ github.event.pull_request.head.ref }}
           WORKFLOW_SHA: ${{ github.workflow_sha }}
         run: |
           set -euo pipefail
@@ -411,8 +413,12 @@ jobs:
           jq -cn \
             --arg target_repository "$TARGET_REPOSITORY" \
             --arg pr_number "$PR_NUMBER" \
-            --arg base_branch "$BASE_BRANCH" \
-            '{event_type:"merge-scheduler",client_payload:{target_repository:$target_repository,pr_number:$pr_number,base_branch:$base_branch,max_prs:"1",review_dispatch_limit:"1",trigger_reviews:true,enable_auto_merge:false,update_branches:false,dry_run:false}}' |
+            --arg pr_base_ref "$BASE_BRANCH" \
+            --arg pr_base_sha "$BASE_SHA" \
+            --arg pr_head_ref "$HEAD_REF" \
+            --arg pr_head_sha "$HEAD_SHA" \
+            --arg required_run_id "$GITHUB_RUN_ID" \
+            '{event_type:"opencode-review",client_payload:{target_repository:$target_repository,pr_number:$pr_number,pr_base_ref:$pr_base_ref,pr_base_sha:$pr_base_sha,pr_head_ref:$pr_head_ref,pr_head_sha:$pr_head_sha,required_run_id:$required_run_id}}' |
             GH_TOKEN="$app_token" gh api -X POST repos/ContextualWisdomLab/.github/dispatches --input -
 
       - name: Fail closed without a current-head OpenCode verdict
diff --git a/tests/test_required_workflow_queue_contract.py b/tests/test_required_workflow_queue_contract.py
index 5b0e993a5e..4a1f717f42 100644
--- a/tests/test_required_workflow_queue_contract.py
+++ b/tests/test_required_workflow_queue_contract.py
@@ -211,6 +211,25 @@ def test_privileged_review_retries_use_default_branch_repository_dispatch() -> N
     assert '"gh",\n        "workflow",\n        "run"' not in autofix_scheduler
 
 
+def test_required_opencode_dispatch_does_not_wait_on_merge_scheduler() -> None:
+    """Dispatch review execution directly so polling cannot starve its producer."""
+    workflow = workflow_text("opencode-review.yml")
+    dispatch = workflow_step(workflow, "Request current-head OpenCode review execution")
+
+    assert 'event_type:"opencode-review"' in dispatch
+    assert 'event_type:"merge-scheduler"' not in dispatch
+    assert 'required_run_id:$required_run_id' in dispatch
+    for field in (
+        "target_repository",
+        "pr_number",
+        "pr_base_ref",
+        "pr_base_sha",
+        "pr_head_ref",
+        "pr_head_sha",
+    ):
+        assert f"{field}:${field}" in dispatch
+
+
 def test_no_central_workflow_exposes_branch_selected_manual_dispatch() -> None:
     """Every central manual entrypoint must load code from the default branch."""
     workflow_files = sorted((REPO_ROOT / ".github" / "workflows").glob("*.yml"))