diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 258473af..e694959a 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1 +1 @@
-{"packages/toolbox-langchain":"0.2.1","packages/toolbox-core":"0.2.1","packages/toolbox-llamaindex":"0.2.1"}
+{"packages/toolbox-langchain":"0.3.0","packages/toolbox-core":"0.3.0","packages/toolbox-llamaindex":"0.3.0"}
diff --git a/packages/toolbox-core/CHANGELOG.md b/packages/toolbox-core/CHANGELOG.md
index 48c6b393..d3a71a0c 100644
--- a/packages/toolbox-core/CHANGELOG.md
+++ b/packages/toolbox-core/CHANGELOG.md
@@ -1,5 +1,25 @@
 # Changelog
 
+## [0.3.0](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-core-v0.2.1...toolbox-core-v0.3.0) (2025-07-02)
+
+
+### Features
+
+* **toolbox-core:** Add support for optional parameters ([#290](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/290)) ([3c8360c](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/3c8360cc09a5a75412075ff3f156f854614f7a86))
+
+
+### Bug Fixes
+
+* **deps:** update dependency mypy to v1.16.1 ([#286](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/286)) ([10e59e1](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/10e59e1b12e5a0dc58f9724a55aca8ed057c0ea2))
+* **deps:** update dependency pytest to v8.4.1 ([#288](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/288)) ([4237fff](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/4237fffddf18a274fda6a23f16354a0199da9506))
+* **deps:** update python-nonmajor ([#289](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/289), [#284](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/284)) ([2725fd2](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/2725fd2bc82150e1f6b4bc3df16dec9e29e4f83a), [492d35f](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/492d35f61360494e60944f8f5939cc23dabca80f))
+* **toolbox-core:** Expose authorization token requirements on `ToolboxTool` ([#294](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/294)) ([d7c3311](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/d7c3311db18eb2785a4c5dc89233a91fc222d84d))
+
+
+### Documentation
+
+* Add complete e2e working quickstart link across all quickstart sections ([#296](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/296)) ([b839bc5](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/b839bc5acd10142888739c2abaff215a32eb3e62))
+
 ## [0.2.1](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-core-v0.2.0...toolbox-core-v0.2.1) (2025-06-13)
 
 
diff --git a/packages/toolbox-core/src/toolbox_core/version.py b/packages/toolbox-core/src/toolbox_core/version.py
index 171fc877..4e7883cf 100644
--- a/packages/toolbox-core/src/toolbox_core/version.py
+++ b/packages/toolbox-core/src/toolbox_core/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.2.1"
+__version__ = "0.3.0"
diff --git a/packages/toolbox-langchain/CHANGELOG.md b/packages/toolbox-langchain/CHANGELOG.md
index 51d8b633..cde3390f 100644
--- a/packages/toolbox-langchain/CHANGELOG.md
+++ b/packages/toolbox-langchain/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## [0.3.0](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-langchain-v0.2.1...toolbox-langchain-v0.3.0) (2025-07-02)
+
+
+### Features
+
+* **toolbox-core:** Add support for optional parameters ([#290](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/290)) ([3c8360c](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/3c8360cc09a5a75412075ff3f156f854614f7a86))
+
+
+### Bug Fixes
+
+* **deps:** update dependency mypy to v1.16.1 ([#286](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/286)) ([10e59e1](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/10e59e1b12e5a0dc58f9724a55aca8ed057c0ea2))
+* **deps:** update dependency pytest to v8.4.1 ([#288](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/288)) ([4237fff](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/4237fffddf18a274fda6a23f16354a0199da9506))
+* **deps:** update python-nonmajor ([#289](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/289), [#295](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/295), [#284](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/284)) ([2725fd2](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/2725fd2bc82150e1f6b4bc3df16dec9e29e4f83a), [ac2bcf5](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/ac2bcf535cddd5fa116495d38a0f1af7bd81b297), [492d35f](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/492d35f61360494e60944f8f5939cc23dabca80f))
+
+
+### Documentation
+
+* Add complete e2e working quickstart link across all quickstart sections ([#296](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/296)) ([b839bc5](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/b839bc5acd10142888739c2abaff215a32eb3e62))
+
 ## [0.2.1](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-langchain-v0.2.0...toolbox-langchain-v0.2.1) (2025-06-13)
 
 
diff --git a/packages/toolbox-langchain/pyproject.toml b/packages/toolbox-langchain/pyproject.toml
index 64b66bbb..07b16bfe 100644
--- a/packages/toolbox-langchain/pyproject.toml
+++ b/packages/toolbox-langchain/pyproject.toml
@@ -9,7 +9,7 @@ authors = [
     {name = "Google LLC", email = "googleapis-packages@google.com"}
 ]
 dependencies = [
-    "toolbox-core==0.2.1",              # x-release-please-version
+    "toolbox-core==0.3.0",              # x-release-please-version
     "langchain-core>=0.2.23,<1.0.0",
     "PyYAML>=6.0.1,<7.0.0",
     "pydantic>=2.7.0,<3.0.0",
diff --git a/packages/toolbox-langchain/src/toolbox_langchain/version.py b/packages/toolbox-langchain/src/toolbox_langchain/version.py
index 171fc877..4e7883cf 100644
--- a/packages/toolbox-langchain/src/toolbox_langchain/version.py
+++ b/packages/toolbox-langchain/src/toolbox_langchain/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.2.1"
+__version__ = "0.3.0"
diff --git a/packages/toolbox-llamaindex/CHANGELOG.md b/packages/toolbox-llamaindex/CHANGELOG.md
index 5cdc3064..7e87caee 100644
--- a/packages/toolbox-llamaindex/CHANGELOG.md
+++ b/packages/toolbox-llamaindex/CHANGELOG.md
@@ -1,5 +1,25 @@
 # Changelog
 
+## [0.3.0](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-llamaindex-v0.2.1...toolbox-llamaindex-v0.3.0) (2025-07-02)
+
+
+### Features
+
+* **toolbox-core:** Add support for optional parameters ([#290](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/290)) ([3c8360c](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/3c8360cc09a5a75412075ff3f156f854614f7a86))
+
+
+### Bug Fixes
+
+* **deps:** update dependency mypy to v1.16.1 ([#286](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/286)) ([10e59e1](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/10e59e1b12e5a0dc58f9724a55aca8ed057c0ea2))
+* **deps:** update dependency pytest to v8.4.1 ([#288](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/288)) ([4237fff](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/4237fffddf18a274fda6a23f16354a0199da9506))
+* **deps:** update python-nonmajor ([#289](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/289), [#295](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/295), [#284](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/284)) ([2725fd2](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/2725fd2bc82150e1f6b4bc3df16dec9e29e4f83a), [ac2bcf5](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/ac2bcf535cddd5fa116495d38a0f1af7bd81b297), [492d35f](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/492d35f61360494e60944f8f5939cc23dabca80f))
+
+
+### Documentation
+
+* Add complete e2e working quickstart link across all quickstart sections ([#296](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/296)) ([b839bc5](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/b839bc5acd10142888739c2abaff215a32eb3e62))
+* **toolbox-llamaindex:** Partially reverts change to restore installation section ([#297](https://github.com/googleapis/mcp-toolbox-sdk-python/issues/297)) ([a2d4ef1](https://github.com/googleapis/mcp-toolbox-sdk-python/commit/a2d4ef1b02e0c0be7f69059fd9c8decce6b0a92b))
+
 ## [0.2.1](https://github.com/googleapis/mcp-toolbox-sdk-python/compare/toolbox-llamaindex-v0.2.0...toolbox-llamaindex-v0.2.1) (2025-06-13)
 
 
diff --git a/packages/toolbox-llamaindex/pyproject.toml b/packages/toolbox-llamaindex/pyproject.toml
index 9b48ab54..c231a811 100644
--- a/packages/toolbox-llamaindex/pyproject.toml
+++ b/packages/toolbox-llamaindex/pyproject.toml
@@ -9,7 +9,7 @@ authors = [
     {name = "Google LLC", email = "googleapis-packages@google.com"}
 ]
 dependencies = [
-    "toolbox-core==0.2.1",              # x-release-please-version
+    "toolbox-core==0.3.0",              # x-release-please-version
     "llama-index>=0.12.0,<1.0.0",
     "PyYAML>=6.0.1,<7.0.0",
     "pydantic>=2.8.0,<3.0.0",
diff --git a/packages/toolbox-llamaindex/src/toolbox_llamaindex/version.py b/packages/toolbox-llamaindex/src/toolbox_llamaindex/version.py
index 171fc877..4e7883cf 100644
--- a/packages/toolbox-llamaindex/src/toolbox_llamaindex/version.py
+++ b/packages/toolbox-llamaindex/src/toolbox_llamaindex/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "0.2.1"
+__version__ = "0.3.0"