diff --git a/docs/prompt-pool-routing-map.md b/docs/prompt-pool-routing-map.md
index 85edd08..91046b3 100644
--- a/docs/prompt-pool-routing-map.md
+++ b/docs/prompt-pool-routing-map.md
@@ -884,6 +884,9 @@ pair metadata through the core Python APIs, then verifies:
 - profile-save and accumulator endpoint payload handlers are smoke-tested
   without importing ComfyUI, and the reversible index switch keeps pick/input
   and route/output behavior stable.
+- Krea2, SDXL, and caption formatter nodes are checked against their public
+  Python formatter APIs for metadata-driven pair inputs, so ComfyUI wrappers
+  cannot silently drift from route behavior.
 
 ## Editing Cheatsheet
 
diff --git a/tools/prompt_smoke.py b/tools/prompt_smoke.py
index 7f36eca..a02154b 100644
--- a/tools/prompt_smoke.py
+++ b/tools/prompt_smoke.py
@@ -5848,6 +5848,126 @@ def smoke_node_formatter_registration() -> None:
     _expect("formatter_profile" in sdxl_inputs, "SDXL Formatter lost formatter_profile input")
     _expect("tooltip" in sdxl_inputs["formatter_profile"][1], "SDXL formatter_profile tooltip injection missing")
 
+    pair = pb.build_insta_of_pair(
+        row_number=1,
+        start_index=1,
+        seed=4311,
+        ethnicity="any",
+        figure="random",
+        no_plus_women=False,
+        no_black=False,
+        trigger=Trigger,
+        prepend_trigger_to_prompt=True,
+        options_json=_insta_options(),
+        character_cast=_character_cast(),
+        hardcore_position_config=_action_filter("penetration_only"),
+    )
+    pair_metadata = _json(pair)
+
+    expected_krea_pair = krea_formatter.format_krea2_prompt(
+        "",
+        metadata_json=pair_metadata,
+        input_hint="metadata_json",
+        target="hardcore",
+        detail_level="balanced",
+        style_mode="preserve",
+        extra_positive="node krea pair marker",
+        extra_negative="node krea pair negative",
+    )
+    node_krea_pair = krea_node().build(
+        "",
+        "metadata_json",
+        "hardcore",
+        "balanced",
+        "preserve",
+        False,
+        metadata_json=pair_metadata,
+        extra_positive="node krea pair marker",
+        extra_negative="node krea pair negative",
+    )
+    _expect(
+        node_krea_pair
+        == (
+            expected_krea_pair["krea_prompt"],
+            expected_krea_pair["negative_prompt"],
+            expected_krea_pair["krea_softcore_prompt"],
+            expected_krea_pair["krea_hardcore_prompt"],
+            expected_krea_pair["softcore_negative_prompt"],
+            expected_krea_pair["hardcore_negative_prompt"],
+            expected_krea_pair["method"],
+        ),
+        "Krea2 Formatter node output drifted from public metadata formatter",
+    )
+
+    expected_sdxl_pair = sdxl_formatter.format_sdxl_prompt(
+        "",
+        metadata_json=pair_metadata,
+        input_hint="metadata_json",
+        target="hardcore",
+        formatter_profile="manual_controls",
+        style_preset="flat_vector_pony",
+        quality_preset="pony_high",
+        trigger=SdxlTrigger,
+        prepend_trigger=True,
+        preserve_trigger=False,
+        nude_weight=1.29,
+        extra_positive="node sdxl pair marker",
+        extra_negative="node sdxl pair negative",
+    )
+    node_sdxl_pair = sxcp_nodes.NODE_CLASS_MAPPINGS["SxCPSDXLFormatter"]().build(
+        "",
+        "metadata_json",
+        "hardcore",
+        "manual_controls",
+        "flat_vector_pony",
+        "pony_high",
+        SdxlTrigger,
+        True,
+        False,
+        1.29,
+        metadata_json=pair_metadata,
+        extra_positive="node sdxl pair marker",
+        extra_negative="node sdxl pair negative",
+    )
+    _expect(
+        node_sdxl_pair
+        == (
+            expected_sdxl_pair["sdxl_prompt"],
+            expected_sdxl_pair["negative_prompt"],
+            expected_sdxl_pair["sdxl_softcore_prompt"],
+            expected_sdxl_pair["sdxl_hardcore_prompt"],
+            expected_sdxl_pair["softcore_negative_prompt"],
+            expected_sdxl_pair["hardcore_negative_prompt"],
+            expected_sdxl_pair["method"],
+        ),
+        "SDXL Formatter node output drifted from public metadata formatter",
+    )
+
+    expected_caption_pair = caption_naturalizer.naturalize_caption(
+        "",
+        metadata_json=pair_metadata,
+        input_hint="metadata_json",
+        trigger=Trigger,
+        include_trigger=True,
+        detail_level="balanced",
+        style_policy="drop_style_tail",
+        caption_profile="training_dense",
+    )
+    node_caption_pair = sxcp_nodes.NODE_CLASS_MAPPINGS["SxCPCaptionNaturalizer"]().build(
+        "",
+        "metadata_json",
+        "training_dense",
+        "balanced",
+        "drop_style_tail",
+        Trigger,
+        True,
+        metadata_json=pair_metadata,
+    )
+    _expect(
+        node_caption_pair == expected_caption_pair,
+        "Caption Naturalizer node output drifted from public metadata formatter",
+    )
+
 
 def smoke_node_insta_registration() -> None:
     required_nodes = [