release: 1.9.0

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "1.8.0"
+  ".": "1.9.0"
 }

.stats.yml

@@ -1,4 +1,4 @@
 configured_endpoints: 21
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase%2Fbrowserbase-921d3c61c7aa06269f74bee63cee993597944f913429caa2aa2e00dd51fab60f.yml
-openapi_spec_hash: d35b9613c41bf172fa2b28aceef10b39
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/browserbase%2Fbrowserbase-3683b291883198719787c333144da6650b6c287db400e0b21f54797f6e986a24.yml
+openapi_spec_hash: 4da0b34a056487d20ed56a3b0b1c078e
 config_hash: cf04ecfb8dad5fbd8b85be25d6e9ec55

CHANGELOG.md

@@ -1,5 +1,29 @@
 # Changelog
 
+## 1.9.0 (2026-04-18)
+
+Full Changelog: [v1.8.0...v1.9.0](https://github.com/browserbase/sdk-python/compare/v1.8.0...v1.9.0)
+
+### Features
+
+* [CORE-1928][apps/api] Add `PENDING` as a valid session state ([4f1248d](https://github.com/browserbase/sdk-python/commit/4f1248dfb1bf79194f65854a6fcd6a0d53433ba1))
+
+
+### Bug Fixes
+
+* **client:** preserve hardcoded query params when merging with user params ([953fd3e](https://github.com/browserbase/sdk-python/commit/953fd3ecd54a7ffc2ee390eac67f2063df89b8e9))
+* ensure file data are only sent as 1 parameter ([a837357](https://github.com/browserbase/sdk-python/commit/a83735708037eec6cb4807e4220ca7452b5b6503))
+
+
+### Performance Improvements
+
+* **client:** optimize file structure copying in multipart requests ([4146f22](https://github.com/browserbase/sdk-python/commit/4146f22bb6c054e7491e4c10021dff3e9e2c8824))
+
+
+### Chores
+
+* **tests:** bump steady to v0.22.1 ([bafb680](https://github.com/browserbase/sdk-python/commit/bafb68055a4f36ef6b7d6a308606db9e8d33257b))
+
 ## 1.8.0 (2026-04-06)
 
 Full Changelog: [v1.7.0...v1.8.0](https://github.com/browserbase/sdk-python/compare/v1.7.0...v1.8.0)

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "browserbase"
-version = "1.8.0"
+version = "1.9.0"
 description = "The official Python library for the Browserbase API"
 dynamic = ["readme"]
 license = "Apache-2.0"

scripts/mock

@@ -22,9 +22,9 @@ echo "==> Starting mock server with URL ${URL}"
 # Run steady mock on the given spec
 if [ "$1" == "--daemon" ]; then
   # Pre-install the package so the download doesn't eat into the startup timeout
-  npm exec --package=@stdy/cli@0.20.2 -- steady --version
+  npm exec --package=@stdy/cli@0.22.1 -- steady --version
 
-  npm exec --package=@stdy/cli@0.20.2 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-form-array-format=comma --validator-query-object-format=brackets --validator-form-object-format=brackets "$URL" &> .stdy.log &
+  npm exec --package=@stdy/cli@0.22.1 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-form-array-format=comma --validator-query-object-format=brackets --validator-form-object-format=brackets "$URL" &> .stdy.log &
 
   # Wait for server to come online via health endpoint (max 30s)
   echo -n "Waiting for server"
@@ -48,5 +48,5 @@ if [ "$1" == "--daemon" ]; then
 
   echo
 else
-  npm exec --package=@stdy/cli@0.20.2 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-form-array-format=comma --validator-query-object-format=brackets --validator-form-object-format=brackets "$URL"
+  npm exec --package=@stdy/cli@0.22.1 -- steady --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-form-array-format=comma --validator-query-object-format=brackets --validator-form-object-format=brackets "$URL"
 fi

scripts/test

@@ -43,7 +43,7 @@ elif ! steady_is_running ; then
   echo -e "To run the server, pass in the path or url of your OpenAPI"
   echo -e "spec to the steady command:"
   echo
-  echo -e "  \$ ${YELLOW}npm exec --package=@stdy/cli@0.20.2 -- steady path/to/your.openapi.yml --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-form-array-format=comma --validator-query-object-format=brackets --validator-form-object-format=brackets${NC}"
+  echo -e "  \$ ${YELLOW}npm exec --package=@stdy/cli@0.22.1 -- steady path/to/your.openapi.yml --host 127.0.0.1 -p 4010 --validator-query-array-format=comma --validator-form-array-format=comma --validator-query-object-format=brackets --validator-form-object-format=brackets${NC}"
   echo
 
   exit 1

src/browserbase/_base_client.py

@@ -540,6 +540,10 @@ def _build_request(
                 files = cast(HttpxRequestFiles, ForceMultipartDict())
 
         prepared_url = self._prepare_url(options.url)
+        # preserve hard-coded query params from the url
+        if params and prepared_url.query:
+            params = {**dict(prepared_url.params.items()), **params}
+            prepared_url = prepared_url.copy_with(raw_path=prepared_url.raw_path.split(b"?", 1)[0])
         if "_" in prepared_url.host:
             # work around https://github.com/encode/httpx/discussions/2880
             kwargs["extensions"] = {"sni_hostname": prepared_url.host.replace("_", "-")}

src/browserbase/_files.py

@@ -3,8 +3,8 @@
 import io
 import os
 import pathlib
-from typing import overload
-from typing_extensions import TypeGuard
+from typing import Sequence, cast, overload
+from typing_extensions import TypeVar, TypeGuard
 
 import anyio
 
@@ -17,7 +17,9 @@
     HttpxFileContent,
     HttpxRequestFiles,
 )
-from ._utils import is_tuple_t, is_mapping_t, is_sequence_t
+from ._utils import is_list, is_mapping, is_tuple_t, is_mapping_t, is_sequence_t
+
+_T = TypeVar("_T")
 
 
 def is_base64_file_input(obj: object) -> TypeGuard[Base64FileInput]:
@@ -121,3 +123,51 @@ async def async_read_file_content(file: FileContent) -> HttpxFileContent:
         return await anyio.Path(file).read_bytes()
 
     return file
+
+
+def deepcopy_with_paths(item: _T, paths: Sequence[Sequence[str]]) -> _T:
+    """Copy only the containers along the given paths.
+
+    Used to guard against mutation by extract_files without copying the entire structure.
+    Only dicts and lists that lie on a path are copied; everything else
+    is returned by reference.
+
+    For example, given paths=[["foo", "files", "file"]] and the structure:
+        {
+            "foo": {
+                "bar": {"baz": {}},
+                "files": {"file": <content>}
+            }
+        }
+    The root dict, "foo", and "files" are copied (they lie on the path).
+    "bar" and "baz" are returned by reference (off the path).
+    """
+    return _deepcopy_with_paths(item, paths, 0)
+
+
+def _deepcopy_with_paths(item: _T, paths: Sequence[Sequence[str]], index: int) -> _T:
+    if not paths:
+        return item
+    if is_mapping(item):
+        key_to_paths: dict[str, list[Sequence[str]]] = {}
+        for path in paths:
+            if index < len(path):
+                key_to_paths.setdefault(path[index], []).append(path)
+
+        # if no path continues through this mapping, it won't be mutated and copying it is redundant
+        if not key_to_paths:
+            return item
+
+        result = dict(item)
+        for key, subpaths in key_to_paths.items():
+            if key in result:
+                result[key] = _deepcopy_with_paths(result[key], subpaths, index + 1)
+        return cast(_T, result)
+    if is_list(item):
+        array_paths = [path for path in paths if index < len(path) and path[index] == "<array>"]
+
+        # if no path expects a list here, nothing will be mutated inside it - return by reference
+        if not array_paths:
+            return cast(_T, item)
+        return cast(_T, [_deepcopy_with_paths(entry, array_paths, index + 1) for entry in item])
+    return item

src/browserbase/_utils/__init__.py

@@ -24,7 +24,6 @@
     coerce_integer as coerce_integer,
     file_from_path as file_from_path,
     strip_not_given as strip_not_given,
-    deepcopy_minimal as deepcopy_minimal,
     get_async_library as get_async_library,
     maybe_coerce_float as maybe_coerce_float,
     get_required_header as get_required_header,

src/browserbase/_utils/_utils.py

@@ -86,8 +86,9 @@ def _extract_items(
     index += 1
     if is_dict(obj):
         try:
-            # We are at the last entry in the path so we must remove the field
-            if (len(path)) == index:
+            # Remove the field if there are no more dict keys in the path,
+            # only "<array>" traversal markers or end.
+            if all(p == "<array>" for p in path[index:]):
                 item = obj.pop(key)
             else:
                 item = obj[key]
@@ -176,21 +177,6 @@ def is_iterable(obj: object) -> TypeGuard[Iterable[object]]:
     return isinstance(obj, Iterable)
 
 
-def deepcopy_minimal(item: _T) -> _T:
-    """Minimal reimplementation of copy.deepcopy() that will only copy certain object types:
-
-    - mappings, e.g. `dict`
-    - list
-
-    This is done for performance reasons.
-    """
-    if is_mapping(item):
-        return cast(_T, {k: deepcopy_minimal(v) for k, v in item.items()})
-    if is_list(item):
-        return cast(_T, [deepcopy_minimal(entry) for entry in item])
-    return item
-
-
 # copied from https://github.com/Rapptz/RoboDanny
 def human_join(seq: Sequence[str], *, delim: str = ", ", final: str = "or") -> str:
     size = len(seq)

src/browserbase/_version.py

@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "browserbase"
-__version__ = "1.8.0"  # x-release-please-version
+__version__ = "1.9.0"  # x-release-please-version

src/browserbase/resources/extensions.py

@@ -7,8 +7,9 @@
 import httpx
 
 from ..types import extension_create_params
+from .._files import deepcopy_with_paths
 from .._types import Body, Query, Headers, NoneType, NotGiven, FileTypes, not_given
-from .._utils import extract_files, path_template, maybe_transform, deepcopy_minimal, async_maybe_transform
+from .._utils import extract_files, path_template, maybe_transform, async_maybe_transform
 from .._compat import cached_property
 from .._resource import SyncAPIResource, AsyncAPIResource
 from .._response import (
@@ -66,7 +67,7 @@ def create(
 
           timeout: Override the client-level default timeout for this request, in seconds
         """
-        body = deepcopy_minimal({"file": file})
+        body = deepcopy_with_paths({"file": file}, [["file"]])
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])
         # It should be noted that the actual Content-Type header that will be
         # sent to the server will contain a `boundary` parameter, e.g.
@@ -193,7 +194,7 @@ async def create(
 
           timeout: Override the client-level default timeout for this request, in seconds
         """
-        body = deepcopy_minimal({"file": file})
+        body = deepcopy_with_paths({"file": file}, [["file"]])
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])
         # It should be noted that the actual Content-Type header that will be
         # sent to the server will contain a `boundary` parameter, e.g.

src/browserbase/resources/sessions/sessions.py

@@ -255,7 +255,7 @@ def list(
         self,
         *,
         q: str | Omit = omit,
-        status: Literal["RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"] | Omit = omit,
+        status: Literal["PENDING", "RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"] | Omit = omit,
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
         extra_headers: Headers | None = None,
@@ -527,7 +527,7 @@ async def list(
         self,
         *,
         q: str | Omit = omit,
-        status: Literal["RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"] | Omit = omit,
+        status: Literal["PENDING", "RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"] | Omit = omit,
         # Use the following arguments if you need to pass additional parameters to the API that aren't available via kwargs.
         # The extra values given here take precedence over values defined on the client or passed to this method.
         extra_headers: Headers | None = None,

src/browserbase/resources/sessions/uploads.py

@@ -6,8 +6,9 @@
 
 import httpx
 
+from ..._files import deepcopy_with_paths
 from ..._types import Body, Query, Headers, NotGiven, FileTypes, not_given
-from ..._utils import extract_files, path_template, maybe_transform, deepcopy_minimal, async_maybe_transform
+from ..._utils import extract_files, path_template, maybe_transform, async_maybe_transform
 from ..._compat import cached_property
 from ..._resource import SyncAPIResource, AsyncAPIResource
 from ..._response import (
@@ -69,7 +70,7 @@ def create(
         """
         if not id:
             raise ValueError(f"Expected a non-empty value for `id` but received {id!r}")
-        body = deepcopy_minimal({"file": file})
+        body = deepcopy_with_paths({"file": file}, [["file"]])
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])
         # It should be noted that the actual Content-Type header that will be
         # sent to the server will contain a `boundary` parameter, e.g.
@@ -132,7 +133,7 @@ async def create(
         """
         if not id:
             raise ValueError(f"Expected a non-empty value for `id` but received {id!r}")
-        body = deepcopy_minimal({"file": file})
+        body = deepcopy_with_paths({"file": file}, [["file"]])
         files = extract_files(cast(Mapping[str, object], body), paths=[["file"]])
         # It should be noted that the actual Content-Type header that will be
         # sent to the server will contain a `boundary` parameter, e.g.

src/browserbase/types/session.py

@@ -32,7 +32,7 @@ class Session(BaseModel):
 
     started_at: datetime = FieldInfo(alias="startedAt")
 
-    status: Literal["RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"]
+    status: Literal["PENDING", "RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"]
 
     updated_at: datetime = FieldInfo(alias="updatedAt")
 

src/browserbase/types/session_list_params.py

@@ -16,4 +16,4 @@ class SessionListParams(TypedDict, total=False):
     for the schema of this query.
     """
 
-    status: Literal["RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"]
+    status: Literal["PENDING", "RUNNING", "ERROR", "TIMED_OUT", "COMPLETED"]

tests/api_resources/test_sessions.py

@@ -189,7 +189,7 @@ def test_method_list(self, client: Browserbase) -> None:
     def test_method_list_with_all_params(self, client: Browserbase) -> None:
         session = client.sessions.list(
             q="q",
-            status="RUNNING",
+            status="PENDING",
         )
         assert_matches_type(SessionListResponse, session, path=["response"])
 
@@ -423,7 +423,7 @@ async def test_method_list(self, async_client: AsyncBrowserbase) -> None:
     async def test_method_list_with_all_params(self, async_client: AsyncBrowserbase) -> None:
         session = await async_client.sessions.list(
             q="q",
-            status="RUNNING",
+            status="PENDING",
         )
         assert_matches_type(SessionListResponse, session, path=["response"])
 

tests/test_client.py

@@ -429,6 +429,30 @@ def test_default_query_option(self) -> None:
 
         client.close()
 
+    def test_hardcoded_query_params_in_url(self, client: Browserbase) -> None:
+        request = client._build_request(FinalRequestOptions(method="get", url="/foo?beta=true"))
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true"}
+
+        request = client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/foo?beta=true",
+                params={"limit": "10", "page": "abc"},
+            )
+        )
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true", "limit": "10", "page": "abc"}
+
+        request = client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/files/a%2Fb?beta=true",
+                params={"limit": "10"},
+            )
+        )
+        assert request.url.raw_path == b"/files/a%2Fb?beta=true&limit=10"
+
     def test_request_extra_json(self, client: Browserbase) -> None:
         request = client._build_request(
             FinalRequestOptions(
@@ -1330,6 +1354,30 @@ async def test_default_query_option(self) -> None:
 
         await client.close()
 
+    async def test_hardcoded_query_params_in_url(self, async_client: AsyncBrowserbase) -> None:
+        request = async_client._build_request(FinalRequestOptions(method="get", url="/foo?beta=true"))
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true"}
+
+        request = async_client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/foo?beta=true",
+                params={"limit": "10", "page": "abc"},
+            )
+        )
+        url = httpx.URL(request.url)
+        assert dict(url.params) == {"beta": "true", "limit": "10", "page": "abc"}
+
+        request = async_client._build_request(
+            FinalRequestOptions(
+                method="get",
+                url="/files/a%2Fb?beta=true",
+                params={"limit": "10"},
+            )
+        )
+        assert request.url.raw_path == b"/files/a%2Fb?beta=true&limit=10"
+
     def test_request_extra_json(self, client: Browserbase) -> None:
         request = client._build_request(
             FinalRequestOptions(