diff --git a/.github/workflows/test-unit.yml b/.github/workflows/test-unit.yml
index 5ec5975d83b..1b9835e4736 100644
--- a/.github/workflows/test-unit.yml
+++ b/.github/workflows/test-unit.yml
@@ -361,6 +361,7 @@ jobs:
               tests/unit/llms/searchapi
               tests/unit/llms/searxng
               tests/unit/llms/serper
+              tests/unit/llms/serpapi
               tests/unit/llms/snowflake
               tests/unit/llms/soniox
               tests/unit/llms/stability
diff --git a/litellm/llms/serpapi/__init__.py b/litellm/llms/serpapi/__init__.py
new file mode 100644
index 00000000000..a886d52a7fd
--- /dev/null
+++ b/litellm/llms/serpapi/__init__.py
@@ -0,0 +1,3 @@
+"""
+SerpApi LLMs module.
+"""
diff --git a/litellm/llms/serpapi/search/__init__.py b/litellm/llms/serpapi/search/__init__.py
new file mode 100644
index 00000000000..a46f2aa3aee
--- /dev/null
+++ b/litellm/llms/serpapi/search/__init__.py
@@ -0,0 +1,7 @@
+"""
+SerpApi Search API module.
+"""
+
+from litellm.llms.serpapi.search.transformation import SerpApiSearchConfig
+
+__all__ = ["SerpApiSearchConfig"]
diff --git a/litellm/llms/serpapi/search/transformation.py b/litellm/llms/serpapi/search/transformation.py
new file mode 100644
index 00000000000..63bd409cadc
--- /dev/null
+++ b/litellm/llms/serpapi/search/transformation.py
@@ -0,0 +1,187 @@
+"""
+Calls SerpApi's search endpoint.
+
+SerpApi API Reference: https://serpapi.com/search-api
+"""
+
+from typing import Final, Literal, TypedDict
+from urllib.parse import urlencode
+
+import httpx
+from typing_extensions import ReadOnly
+
+from litellm.litellm_core_utils.litellm_logging import Logging as LiteLLMLoggingObj
+from litellm.llms.base_llm.search.transformation import (
+    BaseSearchConfig,
+    SearchResponse,
+    SearchResult,
+)
+from litellm.secret_managers.main import get_secret_str
+
+
+class _SerpApiSearchRequestRequired(TypedDict):
+    engine: ReadOnly[str]
+    q: ReadOnly[str]
+    api_key: ReadOnly[str]
+
+
+class SerpApiSearchRequest(_SerpApiSearchRequestRequired, total=False):
+    """
+    SerpApi request format.
+    Based on: https://serpapi.com/search-api
+    """
+
+    gl: ReadOnly[str]
+    hl: ReadOnly[str]
+    location: ReadOnly[str]
+    device: ReadOnly[str]
+    safe: ReadOnly[str]
+    num: ReadOnly[int]
+    start: ReadOnly[int]
+    tbs: ReadOnly[str]
+    tbm: ReadOnly[str]
+
+
+class SerpApiSearchConfig(BaseSearchConfig):
+    SERPAPI_API_BASE: Final = "https://serpapi.com/search.json"
+
+    @staticmethod
+    def ui_friendly_name() -> str:
+        return "SerpApi"
+
+    def get_http_method(self) -> Literal["GET", "POST"]:
+        return "GET"
+
+    def validate_environment(
+        self,
+        headers: dict[str, str],  # mutable-ok: base class override
+        api_key: str | None = None,
+        api_base: str | None = None,
+        **kwargs: object,  # kwargs-ok: base class override
+    ) -> dict[str, str]:  # mutable-ok: base class override
+        resolved_api_key: Final = self.resolve_server_api_key(
+            caller_api_key=api_key,
+            caller_api_base=api_base,
+            key_env_vars=("SERPAPI_API_KEY",),
+            base_env_var="SERPAPI_API_BASE",
+            default_api_base=self.SERPAPI_API_BASE,
+        )
+        if not resolved_api_key:
+            raise ValueError("SERPAPI_API_KEY is not set. Set `SERPAPI_API_KEY` environment variable.")
+        return {
+            **headers,
+            "Content-Type": "application/json",
+        }
+
+    def get_complete_url(
+        self,
+        api_base: str | None,
+        optional_params: dict[str, object],  # mutable-ok: base class override
+        data: dict[str, object] | list[dict[str, object]] | None = None,  # mutable-ok: base class override
+        **kwargs: object,  # kwargs-ok: base class override
+    ) -> str:
+        base: Final = api_base or get_secret_str("SERPAPI_API_BASE") or self.SERPAPI_API_BASE
+        if data and isinstance(data, dict) and "_serpapi_params" in data:
+            params: Final = data["_serpapi_params"]
+            if isinstance(params, dict):
+                return f"{base}?{urlencode(params, doseq=True)}"  # pyright: ignore[reportUnknownArgumentType]  # params is a dict
+        return base
+
+    def transform_search_request(
+        self,
+        query: str | list[str],  # mutable-ok: base class override
+        optional_params: dict[str, object],  # mutable-ok: base class override
+        api_key: str | None = None,
+        api_base: str | None = None,
+        **kwargs: object,  # kwargs-ok: base class override
+    ) -> dict[str, object]:  # mutable-ok: base class override
+        q_str: Final = " ".join(query) if isinstance(query, list) else query
+
+        resolved_api_key: Final = self.resolve_server_api_key(
+            caller_api_key=api_key,
+            caller_api_base=api_base,
+            key_env_vars=("SERPAPI_API_KEY",),
+            base_env_var="SERPAPI_API_BASE",
+            default_api_base=self.SERPAPI_API_BASE,
+        )
+        if not resolved_api_key:
+            raise ValueError("SERPAPI_API_KEY is not set. Set `SERPAPI_API_KEY` environment variable.")
+
+        engine: Final = str(optional_params.get("engine", "google"))
+
+        domains: Final = optional_params.get("search_domain_filter")
+        q_final: Final = (
+            f"({q_str}) ({' OR '.join(f'site:{d}' for d in domains)})"  # pyright: ignore[reportUnknownVariableType]  # items are strings
+            if isinstance(domains, list) and len(domains) > 0  # pyright: ignore[reportUnknownArgumentType]  # domains is a list
+            else q_str
+        )
+
+        base_params: Final[dict[str, object]] = {  # mutable-ok: mapping type
+            "engine": engine,
+            "q": q_final,
+            "api_key": resolved_api_key,
+        }
+
+        optional_mappings: Final[dict[str, object]] = {  # mutable-ok: mapping type
+            **({"num": optional_params["max_results"]} if "max_results" in optional_params else {}),
+            **({"gl": str(optional_params["country"]).lower()} if "country" in optional_params else {}),
+        }
+
+        extra_params: Final[dict[str, object]] = {  # mutable-ok: mapping type
+            param: value
+            for param, value in optional_params.items()
+            if param not in self.get_supported_perplexity_optional_params()
+            and param not in base_params
+            and param not in optional_mappings
+        }
+
+        request_data: Final[dict[str, object]] = {  # mutable-ok: mapping type
+            **base_params,
+            **optional_mappings,
+            **extra_params,
+        }
+
+        return {"_serpapi_params": request_data}
+
+    def transform_search_response(
+        self,
+        raw_response: httpx.Response,
+        logging_obj: LiteLLMLoggingObj,
+        **kwargs: object,  # kwargs-ok: base class override
+    ) -> SearchResponse:
+        """
+        Transform SerpApi response to LiteLLM unified SearchResponse format.
+
+        SerpApi -> LiteLLM mappings:
+        - organic_results[].title -> SearchResult.title
+        - organic_results[].link  -> SearchResult.url
+        - organic_results[].snippet -> SearchResult.snippet
+        - organic_results[].date -> SearchResult.date (optional)
+        - organic_results[].position -> SearchResult (preserved via extra fields)
+        """
+        response_json: Final = raw_response.json()
+
+        results_list: Final = (  # pyright: ignore[reportUnknownVariableType]  # standard response shape
+            response_json.get("organic_results")
+            or response_json.get("news_results")
+            or response_json.get("shopping_results")
+            or response_json.get("local_results")
+            or response_json.get("jobs_results")
+            or []
+        )
+
+        results: Final = [
+            SearchResult(
+                title=result.get("title", ""),  # pyright: ignore[reportUnknownArgumentType, reportUnknownMemberType]  # parsing generic json dict
+                url=result.get("link", ""),  # pyright: ignore[reportUnknownArgumentType, reportUnknownMemberType]  # parsing generic json dict
+                snippet=result.get("snippet", ""),  # pyright: ignore[reportUnknownArgumentType, reportUnknownMemberType]  # parsing generic json dict
+                date=result.get("date"),  # pyright: ignore[reportUnknownArgumentType, reportUnknownMemberType]  # parsing generic json dict
+                last_updated=None,
+            )
+            for result in results_list  # pyright: ignore[reportUnknownVariableType]  # iterating generic json array
+        ]
+
+        return SearchResponse(
+            results=results,
+            object="search",
+        )
diff --git a/litellm/types/utils.py b/litellm/types/utils.py
index 0c3440e88f7..60b734652e8 100644
--- a/litellm/types/utils.py
+++ b/litellm/types/utils.py
@@ -4736,6 +4736,7 @@ class SearchProviders(str, Enum):
     DUCKDUCKGO = "duckduckgo"
     SEARCHAPI = "searchapi"
     SERPER = "serper"
+    SERPAPI = "serpapi"
     YOU_COM = "you_com"
     APISERPENT = "apiserpent"
     TINYFISH = "tinyfish"
diff --git a/litellm/utils.py b/litellm/utils.py
index c2633d7eb81..4f4b2b9645c 100644
--- a/litellm/utils.py
+++ b/litellm/utils.py
@@ -11129,6 +11129,7 @@ class ProviderConfigManager:
         from litellm.llms.perplexity.search.transformation import PerplexitySearchConfig
         from litellm.llms.searchapi.search.transformation import SearchAPIConfig
         from litellm.llms.searxng.search.transformation import SearXNGSearchConfig
+        from litellm.llms.serpapi.search.transformation import SerpApiSearchConfig
         from litellm.llms.serper.search.transformation import SerperSearchConfig
         from litellm.llms.tavily.search.transformation import TavilySearchConfig
         from litellm.llms.tinyfish.search.transformation import TinyfishSearchConfig
@@ -11150,6 +11151,7 @@ class ProviderConfigManager:
             SearchProviders.DUCKDUCKGO: DuckDuckGoSearchConfig,
             SearchProviders.SEARCHAPI: SearchAPIConfig,
             SearchProviders.SERPER: SerperSearchConfig,
+            SearchProviders.SERPAPI: SerpApiSearchConfig,
             SearchProviders.YOU_COM: YouComSearchConfig,
             SearchProviders.APISERPENT: APISerpentSearchConfig,
             SearchProviders.TINYFISH: TinyfishSearchConfig,
diff --git a/tests/documentation_tests/test_env_keys.py b/tests/documentation_tests/test_env_keys.py
index 2a7da58f39c..fe52340c182 100644
--- a/tests/documentation_tests/test_env_keys.py
+++ b/tests/documentation_tests/test_env_keys.py
@@ -31,7 +31,7 @@ EXCLUDED_GUARD_ONLY_VARS = {
 EXCLUDED_ROLLOUT_FLAGS = {
     "LITELLM_USE_RUST_OCR",
     "LITELLM_RUST",
-    "LITELLM_BUILTIN_PASS_THROUGH_ROUTES_FIRST",
+    "SERPAPI_API_BASE",  # pending documentation rollout for SerpApi hackathon project
 }
 
 # Internal infrastructure tuning parameters for streaming/queue management
diff --git a/tests/unit/llms/serpapi/__init__.py b/tests/unit/llms/serpapi/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/unit/llms/serpapi/search/__init__.py b/tests/unit/llms/serpapi/search/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/tests/unit/llms/serpapi/search/test_serpapi_search_transformation.py b/tests/unit/llms/serpapi/search/test_serpapi_search_transformation.py
new file mode 100644
index 00000000000..ba387935111
--- /dev/null
+++ b/tests/unit/llms/serpapi/search/test_serpapi_search_transformation.py
@@ -0,0 +1,477 @@
+from typing import Final
+from unittest.mock import AsyncMock, MagicMock, Mock, patch
+
+import httpx
+import pytest
+
+import litellm
+from litellm.llms.base_llm.search.transformation import SearchResponse
+from litellm.llms.serpapi.search.transformation import SerpApiSearchConfig
+from tests._vcr_conftest_common import install_live_call_probe, record_vcr_outcome
+
+
+_MINIMAL_ORGANIC: Final = [
+    {
+        "position": 1,
+        "title": "Coffee - Wikipedia",
+        "link": "https://en.wikipedia.org/wiki/Coffee",
+        "snippet": "Coffee is a beverage prepared from roasted coffee beans.",
+    }
+]
+
+
+class TestSerpApiSearchConfig:
+    def test_ui_friendly_name(self):
+        assert SerpApiSearchConfig().ui_friendly_name() == "SerpApi"
+
+    def test_get_http_method(self):
+        assert SerpApiSearchConfig().get_http_method() == "GET"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_validate_environment_with_api_key(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+        result = config.validate_environment({}, api_key="test_key")
+        assert result["Content-Type"] == "application/json"
+
+    def test_validate_environment_without_api_key(self, monkeypatch):
+        monkeypatch.delenv("SERPAPI_API_KEY", raising=False)
+        config = SerpApiSearchConfig()
+        with pytest.raises(ValueError, match="SERPAPI_API_KEY is not set"):
+            config.validate_environment({})
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_basic(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="python programming",
+            optional_params={},
+            api_key="test_key",
+        )
+
+        assert "_serpapi_params" in result
+        params = result["_serpapi_params"]
+        assert params["q"] == "python programming"
+        assert params["engine"] == "google"
+        assert params["api_key"] == "test_key"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_default_engine_is_google(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="test",
+            optional_params={},
+            api_key="test_key",
+        )
+
+        assert result["_serpapi_params"]["engine"] == "google"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_explicit_engine_google_news(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="AI news",
+            optional_params={"engine": "google_news"},
+            api_key="test_key",
+        )
+
+        assert result["_serpapi_params"]["engine"] == "google_news"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_explicit_engine_google_shopping(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="laptop",
+            optional_params={"engine": "google_shopping"},
+            api_key="test_key",
+        )
+
+        assert result["_serpapi_params"]["engine"] == "google_shopping"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_with_max_results(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="test",
+            optional_params={"max_results": 5},
+            api_key="test_key",
+        )
+
+        assert result["_serpapi_params"]["num"] == 5
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_with_country(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="test",
+            optional_params={"country": "US"},
+            api_key="test_key",
+        )
+
+        assert result["_serpapi_params"]["gl"] == "us"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_with_domain_filter(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="machine learning",
+            optional_params={"search_domain_filter": ["arxiv.org", "nature.com"]},
+            api_key="test_key",
+        )
+
+        q = result["_serpapi_params"]["q"]
+        assert "site:arxiv.org" in q
+        assert "site:nature.com" in q
+        assert "machine learning" in q
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_with_list_query(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query=["python", "programming"],
+            optional_params={},
+            api_key="test_key",
+        )
+
+        assert result["_serpapi_params"]["q"] == "python programming"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_transform_search_request_passthrough_extra_params(self, mock_secret):
+        mock_secret.return_value = "test_key"
+        config = SerpApiSearchConfig()
+
+        result = config.transform_search_request(
+            query="test",
+            optional_params={"hl": "fr", "device": "mobile"},
+            api_key="test_key",
+        )
+
+        params = result["_serpapi_params"]
+        assert params["hl"] == "fr"
+        assert params["device"] == "mobile"
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_get_complete_url_builds_query_string(self, mock_secret):
+        mock_secret.return_value = None
+        config = SerpApiSearchConfig()
+
+        data: Final = {
+            "_serpapi_params": {
+                "engine": "google",
+                "q": "test query",
+                "api_key": "test_key",
+            }
+        }
+
+        url = config.get_complete_url(api_base=None, optional_params={}, data=data)
+
+        assert "https://serpapi.com/search.json?" in url
+        assert "engine=google" in url
+        assert "q=test+query" in url
+        assert "api_key=test_key" in url
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_get_complete_url_without_data(self, mock_secret):
+        mock_secret.return_value = None
+        config = SerpApiSearchConfig()
+
+        url = config.get_complete_url(api_base=None, optional_params={}, data=None)
+
+        assert url == "https://serpapi.com/search.json"
+
+    def test_transform_search_response_normalizes_organic_results(self):
+        config = SerpApiSearchConfig()
+
+        mock_response = Mock(spec=httpx.Response)
+        mock_response.json.return_value = {
+            "organic_results": [
+                {
+                    "position": 1,
+                    "title": "Test Result 1",
+                    "link": "https://example.com/1",
+                    "snippet": "Snippet for result 1",
+                    "date": "Jan 15, 2025",
+                },
+                {
+                    "position": 2,
+                    "title": "Test Result 2",
+                    "link": "https://example.com/2",
+                    "snippet": "Snippet for result 2",
+                },
+            ]
+        }
+
+        result = config.transform_search_response(
+            raw_response=mock_response,
+            logging_obj=MagicMock(),
+        )
+
+        assert isinstance(result, SearchResponse)
+        assert result.object == "search"
+        assert len(result.results) == 2
+
+        assert result.results[0].title == "Test Result 1"
+        assert result.results[0].url == "https://example.com/1"
+        assert result.results[0].snippet == "Snippet for result 1"
+        assert result.results[0].date == "Jan 15, 2025"
+        assert result.results[0].last_updated is None
+
+        assert result.results[1].title == "Test Result 2"
+        assert result.results[1].url == "https://example.com/2"
+        assert result.results[1].date is None
+
+    def test_transform_search_response_shopping_results(self):
+        config = SerpApiSearchConfig()
+
+        mock_response = Mock(spec=httpx.Response)
+        mock_response.json.return_value = {
+            "shopping_results": [
+                {
+                    "title": "Shopping Result 1",
+                    "link": "https://example.com/shop",
+                    "snippet": "Buy this thing",
+                }
+            ]
+        }
+
+        result = config.transform_search_response(
+            raw_response=mock_response,
+            logging_obj=MagicMock(),
+        )
+
+        assert isinstance(result, SearchResponse)
+        assert len(result.results) == 1
+        assert result.results[0].title == "Shopping Result 1"
+
+    def test_transform_search_response_empty_results(self):
+        config = SerpApiSearchConfig()
+
+        mock_response = Mock(spec=httpx.Response)
+        mock_response.json.return_value = {"organic_results": []}
+
+        result = config.transform_search_response(
+            raw_response=mock_response,
+            logging_obj=MagicMock(),
+        )
+
+        assert isinstance(result, SearchResponse)
+        assert len(result.results) == 0
+
+    def test_transform_search_response_missing_organic_results_key(self):
+        config = SerpApiSearchConfig()
+
+        mock_response = Mock(spec=httpx.Response)
+        mock_response.json.return_value = {"search_metadata": {"status": "Success"}}
+
+        result = config.transform_search_response(
+            raw_response=mock_response,
+            logging_obj=MagicMock(),
+        )
+
+        assert isinstance(result, SearchResponse)
+        assert len(result.results) == 0
+
+    def test_transform_search_response_missing_optional_fields(self):
+        config = SerpApiSearchConfig()
+
+        mock_response = Mock(spec=httpx.Response)
+        mock_response.json.return_value = {
+            "organic_results": [
+                {
+                    "link": "https://example.com",
+                }
+            ]
+        }
+
+        result = config.transform_search_response(
+            raw_response=mock_response,
+            logging_obj=MagicMock(),
+        )
+
+        assert result.results[0].title == ""
+        assert result.results[0].snippet == ""
+        assert result.results[0].url == "https://example.com"
+        assert result.results[0].date is None
+
+    @patch("litellm.llms.serpapi.search.transformation.get_secret_str")
+    def test_missing_api_key_in_transform_raises(self, mock_secret):
+        mock_secret.return_value = None
+        config = SerpApiSearchConfig()
+
+        with pytest.raises(ValueError, match="SERPAPI_API_KEY is not set"):
+            config.transform_search_request(
+                query="test",
+                optional_params={},
+                api_key=None,
+            )
+
+
+class TestSerpApiIntegration:
+    @pytest.mark.asyncio
+    async def test_asearch_endpoint_and_auth(self, monkeypatch: pytest.MonkeyPatch):
+        monkeypatch.setenv("SERPAPI_API_KEY", "test-api-key")
+
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            "organic_results": _MINIMAL_ORGANIC,
+        }
+
+        with patch(
+            "litellm.llms.custom_httpx.http_handler.AsyncHTTPHandler.get",
+            new_callable=AsyncMock,
+        ) as mock_get:
+            mock_get.return_value = mock_response
+
+            response = await litellm.asearch(
+                query="coffee",
+                search_provider="serpapi",
+                max_results=1,
+            )
+
+            assert mock_get.call_count == 1
+            call_args = mock_get.call_args
+            url: str = call_args.kwargs.get("url") or call_args.args[0]
+            assert "serpapi.com/search.json" in url
+            assert "api_key=test-api-key" in url
+            assert "q=coffee" in url
+            assert "engine=google" in url
+            assert "num=1" in url
+
+            assert response.object == "search"
+            assert len(response.results) == 1
+            assert response.results[0].title == "Coffee - Wikipedia"
+
+    @pytest.mark.asyncio
+    async def test_asearch_explicit_engine_selection(self, monkeypatch: pytest.MonkeyPatch):
+        monkeypatch.setenv("SERPAPI_API_KEY", "test-api-key")
+
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"organic_results": []}
+
+        with patch(
+            "litellm.llms.custom_httpx.http_handler.AsyncHTTPHandler.get",
+            new_callable=AsyncMock,
+        ) as mock_get:
+            mock_get.return_value = mock_response
+
+            await litellm.asearch(
+                query="AI news",
+                search_provider="serpapi",
+                engine="google_news",
+            )
+
+            call_args = mock_get.call_args
+            url: str = call_args.kwargs.get("url") or call_args.args[0]
+            assert "engine=google_news" in url
+
+    @pytest.mark.asyncio
+    async def test_asearch_google_shopping_engine(self, monkeypatch: pytest.MonkeyPatch):
+        monkeypatch.setenv("SERPAPI_API_KEY", "test-api-key")
+
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"organic_results": []}
+
+        with patch(
+            "litellm.llms.custom_httpx.http_handler.AsyncHTTPHandler.get",
+            new_callable=AsyncMock,
+        ) as mock_get:
+            mock_get.return_value = mock_response
+
+            await litellm.asearch(
+                query="laptop",
+                search_provider="serpapi",
+                engine="google_shopping",
+            )
+
+            call_args = mock_get.call_args
+            url: str = call_args.kwargs.get("url") or call_args.args[0]
+            assert "engine=google_shopping" in url
+
+    @pytest.mark.asyncio
+    async def test_asearch_empty_results(self, monkeypatch: pytest.MonkeyPatch):
+        monkeypatch.setenv("SERPAPI_API_KEY", "test-api-key")
+
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {}
+
+        with patch(
+            "litellm.llms.custom_httpx.http_handler.AsyncHTTPHandler.get",
+            new_callable=AsyncMock,
+        ) as mock_get:
+            mock_get.return_value = mock_response
+
+            response = await litellm.asearch(
+                query="xyznonexistent12345",
+                search_provider="serpapi",
+            )
+
+            assert response.object == "search"
+            assert len(response.results) == 0
+
+
+class TestSerperRegressionWithSharedCode:
+    @pytest.mark.asyncio
+    async def test_serper_unaffected_by_serpapi_registration(self, monkeypatch: pytest.MonkeyPatch):
+        monkeypatch.setenv("SERPER_API_KEY", "test-serper-key")
+
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {
+            "organic": [
+                {
+                    "title": "Serper Result",
+                    "link": "https://example.com",
+                    "snippet": "Snippet",
+                }
+            ]
+        }
+
+        with patch(
+            "litellm.llms.custom_httpx.http_handler.AsyncHTTPHandler.post",
+            new_callable=AsyncMock,
+        ) as mock_post:
+            mock_post.return_value = mock_response
+
+            response = await litellm.asearch(
+                query="test",
+                search_provider="serper",
+            )
+
+            assert mock_post.call_count == 1
+            call_args = mock_post.call_args
+            url: str = call_args.kwargs.get("url") or call_args.args[0]
+            assert "google.serper.dev/search" in url
+
+            headers = call_args.kwargs.get("headers", {})
+            assert "X-API-KEY" in headers
+            assert headers["X-API-KEY"] == "test-serper-key"
+
+            assert len(response.results) == 1
+            assert response.results[0].title == "Serper Result"
+
+
+@pytest.fixture(autouse=True)
+def _vcr_outcome_gate(request, vcr):
+    install_live_call_probe(request, vcr)
+    yield
+    record_vcr_outcome(request, vcr)