chore: Remove service account support

given it was not correctly supported.

PiperOrigin-RevId: 773137317

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,35 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+** Please make sure you read the contribution guide and file the issues in the right place. **
+[Contribution guide.](https://google.github.io/adk-docs/contributing-guide/)
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Install '...'
+2. Run '....'
+3. Open '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Python version(python -V):
+ - ADK version(pip show google-adk):
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,23 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+** Please make sure you read the contribution guide and file the issues in the right place. **
+[Contribution guide.](https://google.github.io/adk-docs/contributing-guide/)
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/release-please.yml

@@ -0,0 +1,5 @@
+releaseType: python
+handleGHRelease: true
+bumpMinorPreMajor: false
+extraFiles:
+  - src/google/adk/version.py

.github/release-trigger.yml

@@ -0,0 +1 @@
+enabled: true

.github/workflows/check-file-contents.yml

@@ -0,0 +1,113 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: "Check file contents"
+
+on:
+  pull_request:
+    paths:
+      - '**.py'
+
+jobs:
+  check-file-contents:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Check for logger pattern in all changed Python files
+        run: |
+          git fetch origin ${{ github.base_ref }}
+          CHANGED_FILES=$(git diff --diff-filter=ACMR --name-only origin/${{ github.base_ref }}...HEAD | grep -E '\.py$' || true)
+          if [ -n "$CHANGED_FILES" ]; then
+            echo "Changed Python files to check:"
+            echo "$CHANGED_FILES"
+            echo ""
+
+            # Check for 'logger = logging.getLogger(__name__)' in changed .py files.
+            # The grep command will exit with a non-zero status code if the pattern is not found.
+            # We invert the exit code with ! so the step succeeds if the pattern is NOT found.
+            set +e
+            FILES_WITH_FORBIDDEN_LOGGER=$(grep -lE 'logger = logging\.getLogger\(__name__\)' $CHANGED_FILES)
+            GREP_EXIT_CODE=$?
+            set -e
+
+            # grep exits with 0 if matches are found, 1 if no matches are found.
+            # A non-zero exit code other than 1 indicates an error.
+            if [ $GREP_EXIT_CODE -eq 0 ]; then
+              echo "❌ Found forbidden use of 'logger = logging.getLogger(__name__)'. Please use 'logger = logging.getLogger('google_adk.' + __name__)' instead."
+              echo "The following files contain the forbidden pattern:"
+              echo "$FILES_WITH_FORBIDDEN_LOGGER"
+              exit 1
+            elif [ $GREP_EXIT_CODE -eq 1 ]; then
+              echo "✅ No instances of 'logger = logging.getLogger(__name__)' found in changed Python files."
+            fi
+          else
+            echo "✅ No relevant Python files found."
+          fi
+
+      - name: Check for import pattern in certain changed Python files
+        run: |
+          git fetch origin ${{ github.base_ref }}
+          CHANGED_FILES=$(git diff --diff-filter=ACMR --name-only origin/${{ github.base_ref }}...HEAD | grep -E '\.py$' | grep -v -E '__init__.py$|version.py$|tests/.*|contributing/samples/' || true)
+          if [ -n "$CHANGED_FILES" ]; then
+            echo "Changed Python files to check:"
+            echo "$CHANGED_FILES"
+            echo ""
+
+            # Use grep -L to find files that DO NOT contain the pattern.
+            # This command will output a list of non-compliant files.
+            FILES_MISSING_IMPORT=$(grep -L 'from __future__ import annotations' $CHANGED_FILES)
+
+            # Check if the list of non-compliant files is empty
+            if [ -z "$FILES_MISSING_IMPORT" ]; then
+              echo "✅ All modified Python files include 'from __future__ import annotations'."
+              exit 0
+            else
+              echo "❌ The following files are missing 'from __future__ import annotations':"
+              echo "$FILES_MISSING_IMPORT"
+              echo "This import is required to allow forward references in type annotations without quotes."
+              exit 1
+            fi
+          else
+            echo "✅ No relevant Python files found."
+          fi
+
+      - name: Check for import from cli package in certain changed Python files
+        run: |
+          git fetch origin ${{ github.base_ref }}
+          CHANGED_FILES=$(git diff --diff-filter=ACMR --name-only origin/${{ github.base_ref }}...HEAD | grep -E '\.py$' | grep -v -E 'cli/.*|tests/.*|contributing/samples/' || true)
+          if [ -n "$CHANGED_FILES" ]; then
+            echo "Changed Python files to check:"
+            echo "$CHANGED_FILES"
+            echo ""
+
+            set +e
+            FILES_WITH_FORBIDDEN_IMPORT=$(grep -lE '^from.*cli.*import.*$' $CHANGED_FILES)
+            GREP_EXIT_CODE=$?
+            set -e
+
+            if [[ $GREP_EXIT_CODE -eq 0 ]]; then
+              echo "❌ Do not import from the cli package outside of the cli package. If you need to reuse the code elsewhere, please move the code outside of the cli package."
+              echo "The following files contain the forbidden pattern:"
+              echo "$FILES_WITH_FORBIDDEN_IMPORT"
+              exit 1
+            else
+              echo "✅ No instances of importing from the cli package found in relevant changed Python files."
+            fi
+          else
+            echo "✅ No relevant Python files found."
+          fi

.github/workflows/isort.yml

@@ -0,0 +1,69 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Check sorting of imports
+
+on:
+  pull_request:
+    paths:
+      - '**.py'
+      - 'pyproject.toml'
+
+jobs:
+  isort-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install isort
+        run: |
+          pip install isort
+
+      - name: Run isort on changed files
+        id: run_isort
+        run: |
+          git fetch origin ${{ github.base_ref }}
+          CHANGED_FILES=$(git diff --diff-filter=ACMR --name-only origin/${{ github.base_ref }}...HEAD | grep -E '\.py$' || true)
+          if [ -n "$CHANGED_FILES" ]; then
+            echo "Changed Python files:"
+            echo "$CHANGED_FILES"
+            echo ""
+            FORMATTED_FILES=$(echo "$CHANGED_FILES" | tr '\n' ' ')
+
+            # Run isort --check
+            set +e
+            isort --check $CHANGED_FILES
+            RESULT=$?
+            set -e
+            if [ $RESULT -ne 0 ]; then
+              echo ""
+              echo "❌ isort check failed!"
+              echo "👉 To fix import order, run locally:"
+              echo ""
+              echo "    isort $FORMATTED_FILES"
+              echo ""
+              exit $RESULT
+            fi
+          else
+            echo "No Python files changed. Skipping isort check."
+          fi

.github/workflows/pyink.yml

@@ -0,0 +1,69 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Check Pyink Formatting
+
+on:
+  pull_request:
+    paths:
+      - '**.py'
+      - 'pyproject.toml'
+
+jobs:
+  pyink-check:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.x'
+
+      - name: Install pyink
+        run: |
+          pip install pyink
+
+      - name: Run pyink on changed files
+        id: run_pyink
+        run: |
+          git fetch origin ${{ github.base_ref }}
+          CHANGED_FILES=$(git diff --diff-filter=ACMR --name-only origin/${{ github.base_ref }}...HEAD | grep -E '\.py$' || true)
+          if [ -n "$CHANGED_FILES" ]; then
+            echo "Changed Python files:"
+            echo "$CHANGED_FILES"
+            echo ""
+            FORMATTED_FILES=$(echo "$CHANGED_FILES" | tr '\n' ' ')
+
+            # Run pyink --check
+            set +e
+            pyink --check --diff --config pyproject.toml $CHANGED_FILES
+            RESULT=$?
+            set -e
+            if [ $RESULT -ne 0 ]; then
+              echo ""
+              echo "❌ Pyink formatting check failed!"
+              echo "👉 To fix formatting, run locally:"
+              echo ""
+              echo "    pyink --config pyproject.toml $FORMATTED_FILES"
+              echo ""
+              exit $RESULT
+            fi
+          else
+            echo "No Python files changed. Skipping pyink check."
+          fi

.github/workflows/python-unit-tests.yml

@@ -0,0 +1,61 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Python Unit Tests
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.10", "3.11"]
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v4
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v5
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install uv
+      run: curl -LsSf https://astral.sh/uv/install.sh | sh
+
+    - name: Install dependencies
+      run: |
+        uv venv .venv
+        source .venv/bin/activate
+        uv sync --extra test --extra eval --extra a2a
+
+    - name: Run unit tests with pytest
+      run: |
+        source .venv/bin/activate
+        if [[ "${{ matrix.python-version }}" == "3.9" ]]; then
+          pytest tests/unittests \
+            --ignore=tests/unittests/a2a \
+            --ignore=tests/unittests/tools/mcp_tool \
+            --ignore=tests/unittests/artifacts/test_artifact_service.py \
+            --ignore=tests/unittests/tools/google_api_tool/test_googleapi_to_openapi_converter.py
+        else
+          pytest tests/unittests \
+            --ignore=tests/unittests/artifacts/test_artifact_service.py \
+            --ignore=tests/unittests/tools/google_api_tool/test_googleapi_to_openapi_converter.py
+        fi

.github/workflows/triage.yml

@@ -0,0 +1,43 @@
+name: ADK Issue Triaging Agent
+
+on:
+  issues:
+    types: [opened, reopened]
+  schedule:
+    - cron: '0 */6 * * *' # every 6h
+
+jobs:
+  agent-triage-issues:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      contents: read
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.11'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install requests google-adk
+
+      - name: Run Triaging Script
+        env:
+          GITHUB_TOKEN: ${{ secrets.ADK_TRIAGE_AGENT }}
+          GOOGLE_API_KEY: ${{ secrets.GOOGLE_API_KEY }}
+          GOOGLE_GENAI_USE_VERTEXAI: 0
+          OWNER: 'google'
+          REPO: 'adk-python'
+          INTERACTIVE: 0
+          EVENT_NAME: ${{ github.event_name }} # 'issues', 'schedule', etc.
+          ISSUE_NUMBER: ${{ github.event.issue.number }}
+          ISSUE_TITLE: ${{ github.event.issue.title }}
+          ISSUE_BODY: ${{ github.event.issue.body }}
+          ISSUE_COUNT_TO_PROCESS: '3' # Process 3 issues at a time on schedule
+        run: python contributing/samples/adk_triaging_agent/main.py

.gitignore

@@ -0,0 +1,99 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual Environment
+venv/
+ENV/
+env/
+.env
+.venv
+env.bak/
+venv.bak/
+
+# IDE
+.idea/
+.vscode/
+*.swp
+*.swo
+.DS_Store
+
+# Testing
+.coverage
+htmlcov/
+.tox/
+.nox/
+.pytest_cache/
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# Logs
+*.log
+logs/
+log/
+
+# Local development settings
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Google Cloud specific
+.gcloudignore
+.gcloudignore.local
+
+# Documentation
+docs/_build/
+site/
+
+# Misc
+.DS_Store
+Thumbs.db
+*.bak
+*.tmp
+*.temp

CHANGELOG.md

@@ -0,0 +1,362 @@
+# Changelog
+
+## [1.3.0](https://github.com/google/adk-python/compare/v1.2.1...v1.3.0) (2025-06-11)
+
+
+### Features
+
+* Add memory_service option to CLI ([416dc6f](https://github.com/google/adk-python/commit/416dc6feed26e55586d28f8c5132b31413834c88))
+* Add support for display_name and description when deploying to agent engine ([aaf1f9b](https://github.com/google/adk-python/commit/aaf1f9b930d12657bfc9b9d0abd8e2248c1fc469))
+* Dev UI: Trace View
+  * New trace tab which contains all traces grouped by user messages
+  * Click each row will open corresponding event details
+  * Hover each row will highlight the corresponding message in dialog
+* Dev UI: Evaluation
+  * Evaluation Configuration: users can now configure custom threshold for the metrics used for each eval run ([d1b0587](https://github.com/google/adk-python/commit/d1b058707eed72fd4987d8ec8f3b47941a9f7d64))
+  * Each eval case added can now be viewed and edited. Right now we only support edit of text.
+  * Show the used metric in evaluation history ([6ed6351](https://github.com/google/adk-python/commit/6ed635190c86d5b2ba0409064cf7bcd797fd08da))
+* Tool enhancements:
+  * Add url_context_tool ([fe1de7b](https://github.com/google/adk-python/commit/fe1de7b10326a38e0d5943d7002ac7889c161826))
+  * Support to customize timeout for mcpstdio connections ([54367dc](https://github.com/google/adk-python/commit/54367dcc567a2b00e80368ea753a4fc0550e5b57))
+  * Introduce write protected mode to BigQuery tools ([6c999ca](https://github.com/google/adk-python/commit/6c999caa41dca3a6ec146ea42b0a794b14238ec2))
+
+
+
+### Bug Fixes
+
+* Agent Engine deployment:
+  * Correct help text formatting for `adk deploy agent_engine` ([13f98c3](https://github.com/google/adk-python/commit/13f98c396a2fa21747e455bb5eed503a553b5b22))
+  * Handle project and location in the .env properly when deploying to Agent Engine ([0c40542](https://github.com/google/adk-python/commit/0c4054200fd50041f0dce4b1c8e56292b99a8ea8))
+* Fix broken agent graphs ([3b1f2ae](https://github.com/google/adk-python/commit/3b1f2ae9bfdb632b52e6460fc5b7c9e04748bd50))
+* Forward `__annotations__` to the fake func for FunctionTool inspection ([9abb841](https://github.com/google/adk-python/commit/9abb8414da1055ab2f130194b986803779cd5cc5))
+* Handle the case when agent loading error doesn't have msg attribute in agent loader ([c224626](https://github.com/google/adk-python/commit/c224626ae189d02e5c410959b3631f6bd4d4d5c1))
+* Prevent agent_graph.py throwing when workflow agent is root agent ([4b1c218](https://github.com/google/adk-python/commit/4b1c218cbe69f7fb309b5a223aa2487b7c196038))
+* Remove display_name for non-Vertex file uploads ([cf5d701](https://github.com/google/adk-python/commit/cf5d7016a0a6ccf2b522df6f2d608774803b6be4))
+
+
+### Documentation
+
+* Add DeepWiki badge to README ([f38c08b](https://github.com/google/adk-python/commit/f38c08b3057b081859178d44fa2832bed46561a9))
+* Update code example in tool declaration to reflect BigQuery artifact description ([3ae6ce1](https://github.com/google/adk-python/commit/3ae6ce10bc5a120c48d84045328c5d78f6eb85d4))
+
+
+## [1.2.1](https://github.com/google/adk-python/compare/v1.2.0...v1.2.1) (2025-06-04)
+
+
+### Bug Fixes
+
+* Import deprecated from typing_extensions ([068df04](https://github.com/google/adk-python/commit/068df04bcef694725dd36e09f4476b5e67f1b456))
+
+
+## [1.2.0](https://github.com/google/adk-python/compare/v1.1.1...v1.2.0) (2025-06-04)
+
+
+### Features
+
+* Add agent engine as a deployment option to the ADK CLI ([2409c3e](https://github.com/google/adk-python/commit/2409c3ef192262c80f5328121f6dc4f34265f5cf))
+* Add an option to use gcs artifact service in adk web. ([8d36dbd](https://github.com/google/adk-python/commit/8d36dbda520b1c0dec148e1e1d84e36ddcb9cb95))
+* Add index tracking to handle parallel tool call using litellm ([05f4834](https://github.com/google/adk-python/commit/05f4834759c9b1f0c0af9d89adb7b81ea67d82c8))
+* Add sortByColumn functionality to List Operation ([af95dd2](https://github.com/google/adk-python/commit/af95dd29325865ec30a1945b98e65e457760e003))
+* Add implementation for  `get_eval_case`, `update_eval_case` and `delete_eval_case` for the local eval sets manager. ([a7575e0](https://github.com/google/adk-python/commit/a7575e078a564af6db3f42f650e94ebc4f338918))
+* Expose more config of VertexAiSearchTool from latest Google GenAI SDK ([2b5c89b](https://github.com/google/adk-python/commit/2b5c89b3a94e82ea4a40363ea8de33d9473d7cf0))
+* New Agent Visualization ([da4bc0e](https://github.com/google/adk-python/commit/da4bc0efc0dd96096724559008205854e97c3fd1))
+* Set the max width and height of view image dialog to be 90% ([98a635a](https://github.com/google/adk-python/commit/98a635afee399f64e0a813d681cd8521fbb49500))
+* Support Langchain StructuredTool for Langchain tool ([7e637d3](https://github.com/google/adk-python/commit/7e637d3fa05ca3e43a937e7158008d2b146b1b81))
+* Support Langchain tools that has run_manager in _run args and don't have args_schema populated ([3616bb5](https://github.com/google/adk-python/commit/3616bb5fc4da90e79eb89039fb5e302d6a0a14ec))
+* Update for anthropic models ([16f7d98](https://github.com/google/adk-python/commit/16f7d98acf039f21ec8a99f19eabf0ef4cb5268c))
+* Use bigquery scope by default in bigquery credentials. ([ba5b80d](https://github.com/google/adk-python/commit/ba5b80d5d774ff5fdb61bd43b7849057da2b4edf))
+* Add jira_agent adk samples code which connect Jira cloud ([8759a25](https://github.com/google/adk-python/commit/8759a2525170edb2f4be44236fa646a93ba863e6))
+* Render HTML artifact in chat window ([5c2ad32](https://github.com/google/adk-python/commit/5c2ad327bf4262257c3bc91010c3f8c303d3a5f5))
+* Add export to json button in the chat window ([fc3e374](https://github.com/google/adk-python/commit/fc3e374c86c4de87b4935ee9c56b6259f00e8ea2))
+* Add tooltip to the export session button ([2735942](https://github.com/google/adk-python/commit/273594215efe9dbed44d4ef85e6234bd7ba7b7ae))
+
+
+### Bug Fixes
+
+* Add adk icon for UI ([2623c71](https://github.com/google/adk-python/commit/2623c710868d832b6d5119f38e22d82adb3de66b))
+* Add cache_ok option to remove sa warning. ([841e10a](https://github.com/google/adk-python/commit/841e10ae353e0b1b3d020a26d6cac6f37981550e))
+* Add support for running python main function in UnsafeLocalCodeExecutor when the code has an if __name__ == "__main__" statement. ([95e33ba](https://github.com/google/adk-python/commit/95e33baf57e9c267a758e08108cde76adf8af69b))
+* Adk web not working on some env for windows, fixes https://github.com/google/adk-web/issues/34 ([daac8ce](https://github.com/google/adk-python/commit/daac8cedfe6d894f77ea52784f0a6d19003b2c00))
+* Assign empty inputSchema to MCP tool when converting an ADK tool that wraps a function which takes no parameters. ([2a65c41](https://github.com/google/adk-python/commit/2a65c4118bb2aa97f2a13064db884bd63c14a5f7))
+* Call all tools in parallel calls during partial authentication ([0e72efb](https://github.com/google/adk-python/commit/0e72efb4398ce6a5d782bcdcb770b2473eb5af2e))
+* Continue fetching events if there are multiple pages. ([6506302](https://github.com/google/adk-python/commit/65063023a5a7cb6cd5db43db14a411213dc8acf5))
+* Do not convert "false" value to dict ([60ceea7](https://github.com/google/adk-python/commit/60ceea72bde2143eb102c60cf33b365e1ab07d8f))
+* Enhance agent loader exception handler and expose precise error information ([7b51ae9](https://github.com/google/adk-python/commit/7b51ae97245f6990c089183734aad41fe59b3330))
+* Ensure function description is copied when ignoring parameters ([7fdc6b4](https://github.com/google/adk-python/commit/7fdc6b4417e5cf0fbc72d3117531914353d3984a))
+* Filter memory by app_name and user_id. ([db4bc98](https://github.com/google/adk-python/commit/db4bc9809c7bb6b0d261973ca7cfd87b392694be))
+* Fix filtering by user_id for vertex ai session service listing ([9d4ca4e](https://github.com/google/adk-python/commit/9d4ca4ed44cf10bc87f577873faa49af469acc25))
+* fix parameter schema generation for gemini ([5a67a94](https://github.com/google/adk-python/commit/5a67a946d2168b80dd6eba008218468c2db2e74e))
+* Handle non-indexed function call chunks with incremental fallback index ([b181cbc](https://github.com/google/adk-python/commit/b181cbc8bc629d1c9bfd50054e47a0a1b04f7410))
+* Handles function tool parsing corner case where type hints are stored as strings. ([a8a2074](https://github.com/google/adk-python/commit/a8a20743f92cd63c3d287a3d503c1913dd5ad5ae))
+* Introduce PreciseTimestamp to fix mysql datetime precision issue. ([841e10a](https://github.com/google/adk-python/commit/841e10ae353e0b1b3d020a26d6cac6f37981550e))
+* match arg case in errors ([b226a06](https://github.com/google/adk-python/commit/b226a06c0bf798f85a53c591ad12ee582703af6d))
+* ParallelAgent should only append to its immediate sub-agent, not transitive descendants ([ec8bc73](https://github.com/google/adk-python/commit/ec8bc7387c84c3f261c44cedfe76eb1f702e7b17))
+* Relax openapi spec to gemini schema conversion to tolerate more cases ([b1a74d0](https://github.com/google/adk-python/commit/b1a74d099fae44d41750b79e58455282d919dd78))
+* Remove labels from config when using API key from Google AI Studio to call model ([5d29716](https://github.com/google/adk-python/commit/5d297169d08a2d0ea1a07641da2ac39fa46b68a4))
+* **sample:** Correct text artifact saving in artifact_save_text sample ([5c6001d](https://github.com/google/adk-python/commit/5c6001d90fe6e1d15a2db6b30ecf9e7b6c26eee4))
+* Separate thinking from text parts in streaming mode ([795605a](https://github.com/google/adk-python/commit/795605a37e1141e37d86c9b3fa484a3a03e7e9a6))
+* Simplify content for ollama provider ([eaee49b](https://github.com/google/adk-python/commit/eaee49bc897c20231ecacde6855cccfa5e80d849))
+* Timeout issues for mcpstdio server when mcp tools are incorrect. ([45ef668](https://github.com/google/adk-python/commit/45ef6684352e3c8082958bece8610df60048f4a3))
+* **transfer_to_agent:** update docstring for clarity and accuracy ([854a544](https://github.com/google/adk-python/commit/854a5440614590c2a3466cf652688ba57d637205))
+* Update unit test code for test_connection ([b0403b2](https://github.com/google/adk-python/commit/b0403b2d98b2776d15475f6b525409670e2841fc))
+* Use inspect.cleandoc on function docstrings in generate_function_declaration. ([f7cb666](https://github.com/google/adk-python/commit/f7cb66620be843b8d9f3d197d6e8988e9ee0dfca))
+* Restore errors path ([32c5ffa](https://github.com/google/adk-python/commit/32c5ffa8ca5e037f41ff345f9eecf5b26f926ea1))
+* Unused import for deprecated ([ccd05e0](https://github.com/google/adk-python/commit/ccd05e0b00d0327186e3b1156f1b0216293efe21))
+* Prevent JSON parsing errors and preserve non-ascii characters in telemetry ([d587270](https://github.com/google/adk-python/commit/d587270327a8de9f33b3268de5811ac756959850))
+* Raise HTTPException when running evals in fast_api if google-adk[eval] is not installed ([1de5c34](https://github.com/google/adk-python/commit/1de5c340d8da1cedee223f6f5a8c90070a9f0298))
+* Fix typos in README for sample bigquery_agent and oauth_calendar_agent ([9bdd813](https://github.com/google/adk-python/commit/9bdd813be15935af5c5d2a6982a2391a640cab23))
+* Make tool_call one span for telemetry and renamed to execute_tool ([999a7fe](https://github.com/google/adk-python/commit/999a7fe69d511b1401b295d23ab3c2f40bccdc6f))
+* Use media type in chat window. Remove isArtifactImage and isArtifactAudio reference ([1452dac](https://github.com/google/adk-python/commit/1452dacfeb6b9970284e1ddeee6c4f3cb56781f8))
+* Set output_schema correctly for LiteLllm ([6157db7](https://github.com/google/adk-python/commit/6157db77f2fba4a44d075b51c83bff844027a147))
+* Update pending event dialog style ([1db601c](https://github.com/google/adk-python/commit/1db601c4bd90467b97a2f26fe9d90d665eb3c740))
+* Remove the gap between event holder and image ([63822c3](https://github.com/google/adk-python/commit/63822c3fa8b0bdce2527bd0d909c038e2b66dd98))
+
+
+### Documentation
+
+* Adds a sample agent to illustrate state usage via `callbacks`. ([18fbe3c](https://github.com/google/adk-python/commit/18fbe3cbfc9f2af97e4b744ec0a7552331b1d8e3))
+* Fix typos in documentation ([7aaf811](https://github.com/google/adk-python/commit/7aaf8116169c210ceda35c649b5b49fb65bbb740))
+* Change eval_dataset to eval_dataset_file_path_or_dir ([62d7bf5](https://github.com/google/adk-python/commit/62d7bf58bb1c874caaf3c56a614500ae3b52f215))
+* Fix broken link to A2A example ([0d66a78](https://github.com/google/adk-python/commit/0d66a7888b68380241b92f7de394a06df5a0cc06))
+* Fix typo in envs.py ([bd588bc](https://github.com/google/adk-python/commit/bd588bce50ccd0e70b96c7291db035a327ad4d24))
+* Updates CONTRIBUTING.md to refine setup process using uv. ([04e07b4](https://github.com/google/adk-python/commit/04e07b4a1451123272641a256c6af1528ea6523e))
+* Create and update project documentation including README.md and CONTRIBUTING.md ([f180331](https://github.com/google/adk-python/commit/f1803312c6a046f94c23cfeaed3e8656afccf7c3))
+* Rename the root agent in the example to match the example name ([94c0aca](https://github.com/google/adk-python/commit/94c0aca685f1dfa4edb44caaedc2de25cc0caa41))
+* ADK: add section comment ([349a414](https://github.com/google/adk-python/commit/349a414120fbff0937966af95864bd683f063d08))
+
+
+### Chore
+
+* Miscellaneous changes ([0724a83](https://github.com/google/adk-python/commit/0724a83aa9cda00c1b228ed47a5baa7527bb4a0a), [a9dcc58](https://github.com/google/adk-python/commit/a9dcc588ad63013d063dbe37095c0d2e870142c3), [ac52eab](https://github.com/google/adk-python/commit/ac52eab88eccafa451be7584e24aea93ff15f3f3), [a0714b8](https://github.com/google/adk-python/commit/a0714b8afc55461f315ede8451b17aad18d698dd))
+* Enable release-please workflow ([57d99aa](https://github.com/google/adk-python/commit/57d99aa7897fb229f41c2a08034606df1e1e6064))
+* Added unit test coverage for local_eval_sets_manager.py ([174afb3](https://github.com/google/adk-python/commit/174afb3975bdc7e5f10c26f3eebb17d2efa0dd59))
+* Extract common options for `adk web` and `adk api_server` ([01965bd](https://github.com/google/adk-python/commit/01965bdd74a9dbdb0ce91a924db8dee5961478b8))
+
+## 1.1.1
+
+### Features
+* Add BigQuery first-party tools. See [here](https://github.com/google/adk-python/commit/d6c6bb4b2489a8b7a4713e4747c30d6df0c07961) for more details.
+
+
+## 1.1.0
+
+### Features
+
+* Extract agent loading logic from fast_api.py to a separate AgentLoader class and support more agent definition folder/file structure.
+* Added audio play in web UI.
+* Added input transcription support for live/streaming.
+* Added support for storing eval run history locally in adk eval cli.
+* Image artifacts can now be clicked directly in chat message to view.
+* Left side panel can now be resized.
+
+### Bug Fixes
+
+* Avoid duplicating log in stderr.
+* Align event filtering and ordering logic.
+* Add handling for None param.annotation.
+* Fixed several minor bugs regarding eval tab in web UI.
+
+### Miscellaneous Chores
+
+* Updates mypy config in pyproject.toml.
+* Add google search agent in samples.
+* Update filtered schema parameters for Gemini API.
+* Adds autoformat.sh for formatting codebase.
+
+## 1.0.0
+
+### ⚠ BREAKING CHANGES
+
+* Evaluation dataset schema is finalized with strong-type pydantic models.
+  (previously saved eval file needs re-generation, for both adk eval cli and
+  the eval tab in adk web UI).
+* `BuiltInCodeExecutor` (in code_executors package) replaces
+  `BuiltInCodeExecutionTool` (previously in tools package).
+* All methods in services are now async, including session service, artifact
+  service and memory service.
+  * `list_events` and `close_session` methods are removed from session service.
+* agent.py file structure with MCP tools are now easier and simpler ([now](https://github.com/google/adk-python/blob/3b5232c14f48e1d5b170f3698d91639b079722c8/contributing/samples/mcp_stdio_server_agent/agent.py#L33) vs [before](https://github.com/google/adk-python/blob/a4adb739c0d86b9ae4587547d2653d568f6567f2/contributing/samples/mcp_agent/agent.py#L41)).
+  Old format is not working anymore.
+* `Memory` schema and `MemoryService` is redesigned.
+* Mark various class attributes as private in the classes in the `tools` package.
+* Disabled session state injection if instruction provider is used.
+  (so that you can have `{var_name}` in the instruction, which is required for code snippets)
+* Toolbox integration is revamped: tools/toolbox_tool.py → tools/toolbox_toolset.py.
+* Removes the experimental `remote_agent.py`. We'll redesign it and bring it back.
+
+### Features
+
+* Dev UI:
+  * A brand new trace view for overall agent invocation.
+  * A revamped evaluation tab and comparison view for checking eval results.
+* Introduced `BaseToolset` to allow dynamically add/remove tools for agents.
+  * Revamped MCPToolset with the new BaseToolset interface.
+  * Revamped GoogleApiTool, GoogleApiToolset and ApplicationIntegrationToolset with the new BaseToolset interface.
+  * Resigned agent.py file structure when needing MCPToolset.
+  * Added ToolboxToolset.
+* Redesigned strong-typed agent evaluation schema.
+  * Allows users to create more cohesive eval sets.
+  * Allows evals to be extended for non-text modality.
+  * Allows for a structured interaction with the uber eval system.
+* Redesigned Memory schema and MemoryService interfaces.
+* Added token usage to LlmResponse.
+* Allowed specifying `--adk_version` in `adk deploy cloud_run` cli. Default is the current version.
+
+### Bug Fixes
+
+* Fixed `adk deploy cloud_run` failing bug.
+* Fixed logs not being printed due to `google-auth` library.
+
+### Miscellaneous Chores
+
+* Display full help text when adk cli receives invalid arguments.
+* `adk web` now binds `127.0.0.1` by default, instead of 0.0.0.0.
+* `InMemoryRunner` now takes `BaseAgent` in constructor.
+* Various docstring improvements.
+* Various UI tweaks.
+* Various bug fixes.
+* Update various contributing/samples for contributors to validate the implementation.
+
+
+## 0.5.0
+
+### ⚠ BREAKING CHANGES
+
+* Updated artifact and memory service interface to be async. Agents that
+  interact with these services through callbacks or tools will now need to
+  adjust their invocation methods to be async (using await), or ensure calls
+  are wrapped in an asynchronous executor like asyncio.run(). Any service that
+  extends the base interface must also be updated.
+
+### Features
+
+* Introduced the ability to chain model callbacks.
+* Added support for async agent and model callbacks.
+* Added input transcription support for live/streaming.
+* Captured all agent code error and display on UI.
+* Set param required tag to False by default in openapi_tool.
+* Updated evaluation functions to be asynchronous.
+
+### Bug Fixes
+
+* Ensured a unique ID is generated for every event.
+* Fixed the issue when openapi_specparser has parameter.required as None.
+* Updated the 'type' value on the items/properties nested structures for Anthropic models to adhere to JSON schema.
+* Fix litellm error issues.
+
+### Miscellaneous Chores
+
+* Regenerated API docs.
+* Created a `developer` folder and added samples.
+* Updated the contributing guide.
+* Docstring improvements, typo fixings, GitHub action to enforce code styles on formatting and imports, etc.
+
+## 0.4.0
+
+### ⚠ BREAKING CHANGES
+* Set the max size of strings in database columns. MySQL mandates that all VARCHAR-type fields must specify their lengths.
+* Extract content encode/decode logic to a shared util, resolve issues with JSON serialization, and update key length for DB table to avoid key too long issue in mysql.
+* Enhance `FunctionTool` to verify if the model is providing all the mandatory arguments.
+
+### Features
+* Update ADK setup guide to improve onboarding experience.
+* feat: add ordering to recent events in database session service.
+* feat(llm_flows): support async before/after tool callbacks.
+* feat: Added --replay and --resume options to adk run cli. Check adk run --help for more details.
+* Created a new Integration Connector Tool (underlying of the ApplicationIntegrationToolSet) so that we do not force LLM to provide default value.
+
+### Bug Fixes
+
+* Don't send content with empty text to LLM.
+* Fix google search reading undefined for `renderedContent`.
+
+### Miscellaneous Chores
+* Docstring improvements, typo fixings, github action to enfore code styles on formatting and imports, etc.
+
+## 0.3.0
+
+### ⚠ BREAKING CHANGES
+
+* Auth: expose `access_token` and `refresh_token` at top level of auth
+  credentials, instead of a `dict`
+  ([commit](https://github.com/google/adk-python/commit/956fb912e8851b139668b1ccb8db10fd252a6990)).
+
+### Features
+
+* Added support for running agents with MCPToolset easily on `adk web`.
+* Added `custom_metadata` field to `LlmResponse`, which can be used to tag
+  LlmResponse via `after_model_callback`.
+* Added `--session_db_url` to `adk deploy cloud_run` option.
+* Many Dev UI improvements:
+  * Better google search result rendering.
+  * Show websocket close reason in Dev UI.
+  * Better error message showing for audio/video.
+
+### Bug Fixes
+
+* Fixed MCP tool json schema parsing issue.
+* Fixed issues in DatabaseSessionService that leads to crash.
+* Fixed functions.py.
+* Fixed `skip_summarization` behavior in `AgentTool`.
+
+### Miscellaneous Chores
+
+* README.md improvements.
+* Various code improvements.
+* Various typo fixes.
+* Bump min version of google-genai to 1.11.0.
+
+## 0.2.0
+
+### ⚠ BREAKING CHANGES
+
+* Fix typo in method name in `Event`: has_trailing_code_exeuction_result --> has_trailing_code_execution_result.
+
+### Features
+
+* `adk` CLI:
+  * Introduce `adk create` cli tool to help creating agents.
+  * Adds `--verbosity` option to `adk deploy cloud_run` to show detailed cloud
+    run deploy logging.
+* Improve the initialization error message for `DatabaseSessionService`.
+* Lazy loading for Google 1P tools to minimize the initial latency.
+* Support emitting state-change-only events from planners.
+* Lots of Dev UI updates, including:
+  * Show planner thoughts and actions in the Dev UI.
+  * Support MCP tools in Dev UI.
+    (NOTE: `agent.py` interface is temp solution and is subject to change)
+  * Auto-select the only app if only one app is available.
+  * Show grounding links generated by Google Search Tool.
+* `.env` file is reloaded on every agent run.
+
+### Bug Fixes
+
+* `LiteLlm`: arg parsing error and python 3.9 compatibility.
+* `DatabaseSessionService`: adds the missing fields; fixes event with empty
+  content not being persisted.
+* Google API Discovery response parsing issue.
+* `load_memory_tool` rendering issue in Dev UI.
+* Markdown text overflows in Dev UI.
+
+### Miscellaneous Chores
+
+* Adds unit tests in Github action.
+* Improves test coverage.
+* Various typo fixes.
+
+## 0.1.0
+
+### Features
+
+* Initial release of the Agent Development Kit (ADK).
+* Multi-agent, agent-as-workflow, and custom agent support
+* Tool authentication support
+* Rich tool support, e.g. built-in tools, google-cloud tools, third-party tools, and MCP tools
+* Rich callback support
+* Built-in code execution capability
+* Asynchronous runtime and execution
+* Session, and memory support
+* Built-in evaluation support
+* Development UI that makes local development easy
+* Deploy to Google Cloud Run, Agent Engine
+* (Experimental) Live(Bidi) audio/video agent support and Compositional Function Calling(CFC) support

CONTRIBUTING.md

@@ -2,9 +2,25 @@
 
 We'd love to accept your patches and contributions to this project.
 
-## Before you begin
+- [How to contribute](#how-to-contribute)
+- [Before you begin](#before-you-begin)
+  - [Sign our Contributor License Agreement](#sign-our-contributor-license-agreement)
+  - [Review our community guidelines](#review-our-community-guidelines)
+- [Contribution workflow](#contribution-workflow)
+  - [Finding Issues to Work On](#finding-issues-to-work-on)
+  - [Requirement for PRs](#requirement-for-prs)
+  - [Large or Complex Changes](#large-or-complex-changes)
+  - [Testing Requirements](#testing-requirements)
+    - [Unit Tests](#unit-tests)
+    - [Manual End-to-End (E2E) Tests](#manual-end-to-end-e2e-tests)
+  - [Documentation](#documentation)
+  - [Development Setup](#development-setup)
+  - [Code reviews](#code-reviews)
 
-### Sign our Contributor License Agreement
+
+# Before you begin
+
+## Sign our Contributor License Agreement
 
 Contributions to this project must be accompanied by a
 [Contributor License Agreement](https://cla.developers.google.com/about) (CLA).
@@ -18,16 +34,178 @@ was for a different project), you probably don't need to do it again.
 Visit <https://cla.developers.google.com/> to see your current agreements or to
 sign a new one.
 
-### Review our community guidelines
+## Review our community guidelines
 
 This project follows
 [Google's Open Source Community Guidelines](https://opensource.google/conduct/).
 
-## Contribution process
+# Contribution workflow
 
-### Code reviews
+## Finding Issues to Work On
+
+- Browse issues labeled **`good first issue`** (newcomer-friendly) or **`help wanted`** (general contributions).
+- For other issues, please kindly ask before contributing to avoid duplication.
+
+
+## Requirement for PRs
+
+- All PRs, other than small documentation or typo fixes, should have a Issue assoicated. If not, please create one.
+- Small, focused PRs. Keep changes minimal—one concern per PR.
+- For bug fixes or features, please provide logs or screenshot after the fix is applied to help reviewers better understand the fix.
+- Please include a `testing plan` section in your PR to talk about how you will test. This will save time for PR review. See `Testing Requirements` section for more details.
+
+## Large or Complex Changes
+For substantial features or architectural revisions:
+
+- Open an Issue First: Outline your proposal, including design considerations and impact.
+- Gather Feedback: Discuss with maintainers and the community to ensure alignment and avoid duplicate work
+
+## Testing Requirements
+
+To maintain code quality and prevent regressions, all code changes must include comprehensive tests and verifiable end-to-end (E2E) evidence.
+
+
+### Unit Tests
+
+Please add or update unit tests for your change. Please include a summary of passed `pytest` results.
+
+Requirements for unit tests:
+
+- **Coverage:** Cover new features, edge cases, error conditions, and typical use cases.
+- **Location:** Add or update tests under `tests/unittests/`, following existing naming conventions (e.g., `test_<module>_<feature>.py`).
+- **Framework:** Use `pytest`. Tests should be:
+  - Fast and isolated.
+  - Written clearly with descriptive names.
+  - Free of external dependencies (use mocks or fixtures as needed).
+- **Quality:** Aim for high readability and maintainability; include docstrings or comments for complex scenarios.
+
+### Manual End-to-End (E2E) Tests
+
+Manual E2E tests ensure integrated flows work as intended. Your tests should cover all scenarios. Sometimes, it's also good to ensure relevant functionality is not impacted.
+
+Depending on your change:
+
+- **ADK Web:**
+  - Use the `adk web` to verify functionality.
+  - Capture and attach relevant screenshots demonstrating the UI/UX changes or outputs.
+  - Label screenshots clearly in your PR description.
+
+- **Runner:**
+  - Provide the testing setup. For example, the agent definition, and the runner setup.
+  - Execute the `runner` tool to reproduce workflows.
+  - Include the command used and console output showing test results.
+  - Highlight sections of the log that directly relate to your change.
+
+## Documentation
+
+For any changes that impact user-facing documentation (guides, API reference, tutorials), please open a PR in the [adk-docs](https://github.com/google/adk-docs) repository to update relevant part before or alongside your code PR.
+
+## Development Setup
+1.  **Clone the repository:**
+
+    ```shell
+    gh repo clone google/adk-python
+    cd adk-python
+    ```
+
+2.  **Install uv:**
+
+    Check out [uv installation guide](https://docs.astral.sh/uv/getting-started/installation/).
+
+3.  **Create and activate a virtual environment:**
+
+    **NOTE**: ADK supports Python 3.9+. Python 3.11 and above is strongly recommended.
+
+    Create a workspace venv using uv.
+
+    ```shell
+    uv venv --python "python3.11" ".venv"
+    ```
+
+    Activate the workspace venv.
+
+    ```shell
+    source .venv/bin/activate
+    ```
+
+    **windows**
+    ```shell
+    source .\.venv\Scripts\activate
+    ```
+
+4.  **Install dependencies:**
+
+    ```shell
+    uv sync --all-extras
+    ```
+
+    **NOTE**: for convenience, installing all extra deps as a starting point.
+
+5.  **Run unit tests:**
+
+    ```shell
+    pytest ./tests/unittests
+    ```
+
+    NOTE: for accurately repro test failure, only include `test` and `eval` as
+    extra dependencies.
+
+    ```shell
+    uv sync --extra test --extra eval
+    pytest ./tests/unittests
+    ```
+
+6.  **Auto-format the code:**
+
+    **NOTE**: We use `isort` and `pyink` for styles. Use the included
+    autoformat.sh to auto-format.
+
+    ```shell
+    ./autoformat.sh
+    ```
+
+7. **Build the wheel file:**
+
+    ```shell
+    uv build
+    ```
+
+8.  **Test the locally built wheel file:**
+    Have a simple testing folder setup as mentioned in the
+    [quickstart](https://google.github.io/adk-docs/get-started/quickstart/).
+
+    Then following below steps to test your changes:
+
+    Create a clean venv and activate it:
+
+    ```shell
+    VENV_PATH=~/venvs/adk-quickstart
+    ```
+
+    ```shell
+    command -v deactivate >/dev/null 2>&1 && deactivate
+    ```
+
+    ```shell
+    rm -rf $VENV_PATH \
+      && python3 -m venv $VENV_PATH \
+      && source $VENV_PATH/bin/activate
+    ```
+
+    Install the locally built wheel file:
+
+    ```shell
+    pip install dist/google_adk-<version>-py3-none-any.whl
+    ```
+
+## Contributing Resources
+
+[Contributing folder](https://github.com/google/adk-python/tree/main/contributing/samples) has resources that is helpful for contributors.
+
+
+## Code reviews
 
 All submissions, including submissions by project members, require review. We
 use GitHub pull requests for this purpose. Consult
 [GitHub Help](https://help.github.com/articles/about-pull-requests/) for more
-information on using pull requests.
+information on using pull requests.

README.md

@@ -1,98 +1,142 @@
 # Agent Development Kit (ADK)
 
 [![License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](LICENSE)
+[![Python Unit Tests](https://github.com/google/adk-python/actions/workflows/python-unit-tests.yml/badge.svg)](https://github.com/google/adk-python/actions/workflows/python-unit-tests.yml)
+[![r/agentdevelopmentkit](https://img.shields.io/badge/Reddit-r%2Fagentdevelopmentkit-FF4500?style=flat&logo=reddit&logoColor=white)](https://www.reddit.com/r/agentdevelopmentkit/)
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/google/adk-python)
 
 <html>
-    <h1 align="center">
-      <img src="assets/agent-development-kit.png" width="256"/>
-    </h1>
+    <h2 align="center">
+      <img src="https://raw.githubusercontent.com/google/adk-python/main/assets/agent-development-kit.png" width="256"/>
+    </h2>
     <h3 align="center">
       An open-source, code-first Python toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.
     </h3>
     <h3 align="center">
       Important Links:
-      <a href="https://google.github.io/adk-docs/">Docs</a> &
-      <a href="https://github.com/google/adk-samples">Samples</a>.
+      <a href="https://google.github.io/adk-docs/">Docs</a>, 
+      <a href="https://github.com/google/adk-samples">Samples</a>,
+      <a href="https://github.com/google/adk-java">Java ADK</a> &
+      <a href="https://github.com/google/adk-web">ADK Web</a>.
     </h3>
 </html>
 
-The Agent Development Kit (ADK) is designed for developers seeking fine-grained control and flexibility when building advanced AI agents that are tightly integrated with services in Google Cloud. It allows you to define agent behavior, orchestration, and tool use directly in code, enabling robust debugging, versioning, and deployment anywhere – from your laptop to the cloud.
+Agent Development Kit (ADK) is a flexible and modular framework for developing and deploying AI agents. While optimized for Gemini and the Google ecosystem, ADK is model-agnostic, deployment-agnostic, and is built for compatibility with other frameworks. ADK was designed to make agent development feel more like software development, to make it easier for developers to create, deploy, and orchestrate agentic architectures that range from simple tasks to complex workflows.
+
 
 ---
 
 ## ✨ Key Features
 
-* **Code-First Development:** Define agents, tools, and orchestration logic for maximum control, testability, and versioning.
-* **Multi-Agent Architecture:** Build modular and scalable applications by composing multiple specialized agents in flexible hierarchies.
-* **Rich Tool Ecosystem:** Equip agents with diverse capabilities using pre-built tools, custom Python functions, API specifications, or integrating existing tools.
-* **Flexible Orchestration:** Define workflows using built-in agents for predictable pipelines, or leverage LLM-driven dynamic routing for adaptive behavior.
-* **Integrated Developer Experience:** Develop, test, and debug locally with a CLI and visual web UI.
-* **Built-in Evaluation:** Measure agent performance by evaluating response quality and step-by-step execution trajectory.
-* **Deployment Ready:** Containerize and deploy your agents anywhere – scale with Vertex AI Agent Engine, Cloud Run, or Docker.
-* **Native Streaming Support:** Build real-time, interactive experiences with native support for bidirectional streaming (text and audio).
-* **State, Memory & Artifacts:** Manage short-term conversational context, configure long-term memory, and handle file uploads/downloads.
-* **Extensibility:** Customize agent behavior deeply with callbacks and easily integrate third-party tools and services.
+- **Rich Tool Ecosystem**: Utilize pre-built tools, custom functions,
+  OpenAPI specs, or integrate existing tools to give agents diverse
+  capabilities, all for tight integration with the Google ecosystem.
+
+- **Code-First Development**: Define agent logic, tools, and orchestration
+  directly in Python for ultimate flexibility, testability, and versioning.
+
+- **Modular Multi-Agent Systems**: Design scalable applications by composing
+  multiple specialized agents into flexible hierarchies.
+
+- **Deploy Anywhere**: Easily containerize and deploy agents on Cloud Run or
+  scale seamlessly with Vertex AI Agent Engine.
+
+## 🤖 Agent2Agent (A2A) Protocol and ADK Integration
+
+For remote agent-to-agent communication, ADK integrates with the
+[A2A protocol](https://github.com/google-a2a/A2A/).
+See this [example](https://github.com/google-a2a/a2a-samples/tree/main/samples/python/agents/google_adk)
+for how they can work together.
 
 ## 🚀 Installation
 
-You can install the ADK using `pip`:
+### Stable Release (Recommended)
+
+You can install the latest stable version of ADK using `pip`:
 
 ```bash
 pip install google-adk
 ```
 
-## 🏁 Getting Started
+The release cadence is weekly.
 
-Create your first agent (`my_agent/agent.py`):
+This version is recommended for most users as it represents the most recent official release.
+
+### Development Version
+Bug fixes and new features are merged into the main branch on GitHub first. If you need access to changes that haven't been included in an official PyPI release yet, you can install directly from the main branch:
+
+```bash
+pip install git+https://github.com/google/adk-python.git@main
+```
+
+Note: The development version is built directly from the latest code commits. While it includes the newest fixes and features, it may also contain experimental changes or bugs not present in the stable release. Use it primarily for testing upcoming changes or accessing critical fixes before they are officially released.
+
+## 📚 Documentation
+
+Explore the full documentation for detailed guides on building, evaluating, and
+deploying agents:
+
+* **[Documentation](https://google.github.io/adk-docs)**
+
+## 🏁 Feature Highlight
+
+### Define a single agent:
 
 ```python
-# my_agent/agent.py
 from google.adk.agents import Agent
 from google.adk.tools import google_search
 
 root_agent = Agent(
     name="search_assistant",
-    model="gemini-2.0-flash-exp", # Or your preferred Gemini model
+    model="gemini-2.0-flash", # Or your preferred Gemini model
     instruction="You are a helpful assistant. Answer user questions using Google Search when needed.",
     description="An assistant that can search the web.",
     tools=[google_search]
 )
 ```
 
-Create `my_agent/__init__.py`:
+### Define a multi-agent system:
+
+Define a multi-agent system with coordinator agent, greeter agent, and task execution agent. Then ADK engine and the model will guide the agents works together to accomplish the task.
 
 ```python
-# my_agent/__init__.py
-from . import agent
+from google.adk.agents import LlmAgent, BaseAgent
+
+# Define individual agents
+greeter = LlmAgent(name="greeter", model="gemini-2.0-flash", ...)
+task_executor = LlmAgent(name="task_executor", model="gemini-2.0-flash", ...)
+
+# Create parent agent and assign children via sub_agents
+coordinator = LlmAgent(
+    name="Coordinator",
+    model="gemini-2.0-flash",
+    description="I coordinate greetings and tasks.",
+    sub_agents=[ # Assign sub_agents here
+        greeter,
+        task_executor
+    ]
+)
 ```
 
-Run it via the CLI (from the directory *containing* `my_agent`):
+### Development UI
+
+A built-in development UI to help you test, evaluate, debug, and showcase your agent(s).
+
+<img src="https://raw.githubusercontent.com/google/adk-python/main/assets/adk-web-dev-ui-function-call.png"/>
+
+###  Evaluate Agents
 
 ```bash
-adk run my_agent
+adk eval \
+    samples_for_testing/hello_world \
+    samples_for_testing/hello_world/hello_world_eval_set_001.evalset.json
 ```
 
-Or launch the Web UI from the folder that contains `my_agent` folder:
-
-```bash
-adk web
-```
-
-For a full step-by-step guide, check out the [quickstart](https://google.github.io/adk-docs/get-started/quickstart/) or [sample agents](https://github.com/google/adk-samples).
-
-## 📚 Resources
-
-Explore the full documentation for detailed guides on building, evaluating, and deploying agents:
-
-*   **[Get Started](https://google.github.io/adk-docs/get-started/)**
-*   **[Browse Sample Agents](https://github.com/google/adk-samples)**
-*   **[Evaluate Agents](https://google.github.io/adk-docs/guides/evaluate-agents/)**
-*   **[Deploy Agents](https://google.github.io/adk-docs/deploy/)**
-*   **[API Reference](https://google.github.io/adk-docs/api-reference/)**
-
 ## 🤝 Contributing
 
-We welcome contributions from the community! Whether it's bug reports, feature requests, documentation improvements, or code contributions, please see our [**Contributing Guidelines**](./CONTRIBUTING.md) to get started.
+We welcome contributions from the community! Whether it's bug reports, feature requests, documentation improvements, or code contributions, please see our
+- [General contribution guideline and flow](https://google.github.io/adk-docs/contributing-guide/#questions).
+- Then if you want to contribute code, please read [Code Contributing Guidelines](./CONTRIBUTING.md) to get started.
 
 ## 📄 License
 

autoformat.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Autoformat ADK codebase.
+
+if ! command -v isort &> /dev/null
+then
+    echo "isort not found, refer to CONTRIBUTING.md to set up dev environment first."
+    exit
+fi
+
+if ! command -v pyink &> /dev/null
+then
+    echo "pyink not found, refer to CONTRIBUTING.md to set up dev environment first."
+    exit
+fi
+
+echo '---------------------------------------'
+echo '|  Organizing imports for src/...'
+echo '---------------------------------------'
+
+isort src/
+echo 'All done! ✨ 🍰 ✨'
+
+echo '---------------------------------------'
+echo '|  Organizing imports for tests/...'
+echo '---------------------------------------'
+
+isort tests/
+echo 'All done! ✨ 🍰 ✨'
+
+echo '---------------------------------------'
+echo '|  Organizing imports for contributing/...'
+echo '---------------------------------------'
+
+isort contributing/
+echo 'All done! ✨ 🍰 ✨'
+
+echo '---------------------------------------'
+echo '|  Auto-formatting src/...'
+echo '---------------------------------------'
+
+find -L src/ -type f -name "*.py" -exec pyink --config pyproject.toml {} +
+
+echo '---------------------------------------'
+echo '|  Auto-formatting tests/...'
+echo '---------------------------------------'
+
+find -L tests/ -type f -name "*.py" -exec pyink --config pyproject.toml {} +
+
+echo '---------------------------------------'
+echo '|  Auto-formatting contributing/...'
+echo '---------------------------------------'
+
+find -L contributing/ -type f -name "*.py" -exec pyink --config pyproject.toml {} +

contributing/README.md

@@ -0,0 +1,9 @@
+# Contributing Resources
+
+This folder host resources for ADK contributors, for example, testing samples etc.
+
+## Samples
+
+Samples folder host samples to test different features. The samples are usually minimal and simplistic to test one or a few scenarios.
+
+**Note**: This is different from the [google/adk-samples](https://github.com/google/adk-samples) repo, which hosts more complex e2e samples for customers to use or modify directly.

contributing/samples/adk_triaging_agent/README.md

@@ -0,0 +1,67 @@
+# ADK Issue Triaging Assistant
+
+The ADK Issue Triaging Assistant is a Python-based agent designed to help manage and triage GitHub issues for the `google/adk-python` repository. It uses a large language model to analyze new and unlabelled issues, recommend appropriate labels based on a predefined set of rules, and apply them.
+
+This agent can be operated in two distinct modes: an interactive mode for local use or as a fully automated GitHub Actions workflow.
+
+---
+
+## Interactive Mode
+
+This mode allows you to run the agent locally to review its recommendations in real-time before any changes are made to your repository's issues.
+
+### Features
+* **Web Interface**: The agent's interactive mode can be rendered in a web browser using the ADK's `adk web` command.
+* **User Approval**: In interactive mode, the agent is instructed to ask for your confirmation before applying a label to a GitHub issue.
+
+### Running in Interactive Mode
+To run the agent in interactive mode, first set the required environment variables. Then, execute the following command in your terminal:
+
+```bash
+adk web
+```
+This will start a local server and provide a URL to access the agent's web interface in your browser.
+
+---
+
+## GitHub Workflow Mode
+
+For automated, hands-off issue triaging, the agent can be integrated directly into your repository's CI/CD pipeline using a GitHub Actions workflow.
+
+### Workflow Triggers
+The GitHub workflow is configured to run on specific triggers:
+
+1.  **Issue Events**: The workflow executes automatically whenever a new issue is `opened` or an existing one is `reopened`.
+
+2.  **Scheduled Runs**: The workflow also runs on a recurring schedule (every 6 hours) to process any unlabelled issues that may have been missed.
+
+### Automated Labeling
+When running as part of the GitHub workflow, the agent operates non-interactively. It identifies the best label and applies it directly without requiring user approval. This behavior is configured by setting the `INTERACTIVE` environment variable to `0` in the workflow file.
+
+### Workflow Configuration
+The workflow is defined in a YAML file (`.github/workflows/triage.yml`). This file contains the steps to check out the code, set up the Python environment, install dependencies, and run the triaging script with the necessary environment variables and secrets.
+
+---
+
+## Setup and Configuration
+
+Whether running in interactive or workflow mode, the agent requires the following setup.
+
+### Dependencies
+The agent requires the following Python libraries.
+
+```bash
+pip install --upgrade pip
+pip install google-adk requests
+```
+
+### Environment Variables
+The following environment variables are required for the agent to connect to the necessary services.
+
+* `GITHUB_TOKEN`: **(Required)** A GitHub Personal Access Token with `issues:write` permissions. Needed for both interactive and workflow modes.
+* `GOOGLE_API_KEY`: **(Required)** Your API key for the Gemini API. Needed for both interactive and workflow modes.
+* `OWNER`: The GitHub organization or username that owns the repository (e.g., `google`). Needed for both modes.
+* `REPO`: The name of the GitHub repository (e.g., `adk-python`). Needed for both modes.
+* `INTERACTIVE`: Controls the agent's interaction mode. For the automated workflow, this is set to `0`. For interactive mode, it should be set to `1` or left unset.
+
+For local execution in interactive mode, you can place these variables in a `.env` file in the project's root directory. For the GitHub workflow, they should be configured as repository secrets.

contributing/samples/adk_triaging_agent/agent.py

@@ -0,0 +1,145 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+
+from google.adk import Agent
+import requests
+
+GITHUB_TOKEN = os.getenv("GITHUB_TOKEN")
+if not GITHUB_TOKEN:
+  raise ValueError("GITHUB_TOKEN environment variable not set")
+
+OWNER = os.getenv("OWNER", "google")
+REPO = os.getenv("REPO", "adk-python")
+BOT_LABEL = os.getenv("BOT_LABEL", "bot_triaged")
+
+BASE_URL = "https://api.github.com"
+
+headers = {
+    "Authorization": f"token {GITHUB_TOKEN}",
+    "Accept": "application/vnd.github.v3+json",
+}
+
+ALLOWED_LABELS = [
+    "documentation",
+    "services",
+    "question",
+    "tools",
+    "eval",
+    "live",
+    "models",
+    "tracing",
+    "core",
+    "web",
+]
+
+
+def is_interactive():
+  return os.environ.get("INTERACTIVE", "1").lower() in ["true", "1"]
+
+
+def list_issues(issue_count: int):
+  """
+  Generator to list all issues for the repository by handling pagination.
+
+  Args:
+    issue_count: number of issues to return
+
+  """
+  query = f"repo:{OWNER}/{REPO} is:open is:issue no:label"
+
+  unlabelled_issues = []
+  url = f"{BASE_URL}/search/issues"
+
+  params = {
+      "q": query,
+      "sort": "created",
+      "order": "desc",
+      "per_page": issue_count,
+      "page": 1,
+  }
+  response = requests.get(url, headers=headers, params=params, timeout=60)
+  response.raise_for_status()
+  json_response = response.json()
+  issues = json_response.get("items", None)
+  if not issues:
+    return []
+  for issue in issues:
+    if not issue.get("labels", None) or len(issue["labels"]) == 0:
+      unlabelled_issues.append(issue)
+  return unlabelled_issues
+
+
+def add_label_to_issue(issue_number: str, label: str):
+  """
+  Add the specified label to the given issue number.
+
+  Args:
+    issue_number: issue number of the Github issue, in string foramt.
+    label: label to assign
+  """
+  print(f"Attempting to add label '{label}' to issue #{issue_number}")
+  if label not in ALLOWED_LABELS:
+    error_message = (
+        f"Error: Label '{label}' is not an allowed label. Will not apply."
+    )
+    print(error_message)
+    return {"status": "error", "message": error_message, "applied_label": None}
+
+  url = f"{BASE_URL}/repos/{OWNER}/{REPO}/issues/{issue_number}/labels"
+  payload = [label, BOT_LABEL]
+  response = requests.post(url, headers=headers, json=payload, timeout=60)
+  response.raise_for_status()
+  return response.json()
+
+
+approval_instruction = (
+    "Only label them when the user approves the labeling!"
+    if is_interactive()
+    else (
+        "Do not ask for user approval for labeling! If you can't find a"
+        " appropriate labels for the issue, do not label it."
+    )
+)
+
+root_agent = Agent(
+    model="gemini-2.5-pro-preview-05-06",
+    name="adk_triaging_assistant",
+    description="Triage ADK issues.",
+    instruction=f"""
+      You are a Github adk-python repo triaging bot. You will help get issues, and recommend a label.
+      IMPORTANT: {approval_instruction}
+      Here are the rules for labeling:
+      - If the user is asking about documentation-related questions, label it with "documentation".
+      - If it's about session, memory services, label it with "services"
+      - If it's about UI/web, label it with "web"
+      - If the user is asking about a question, label it with "question"
+      - If it's related to tools, label it with "tools"
+      - If it's about agent evalaution, then label it with "eval".
+      - If it's about streaming/live, label it with "live".
+      - If it's about model support(non-Gemini, like Litellm, Ollama, OpenAI models), label it with "models".
+      - If it's about tracing, label it with "tracing".
+      - If it's agent orchestration, agent definition, label it with "core".
+      - If you can't find a appropriate labels for the issue, follow the previous instruction that starts with "IMPORTANT:".
+
+      Present the followings in an easy to read format highlighting issue number and your label.
+      - the issue summary in a few sentence
+      - your label recommendation and justification
+    """,
+    tools=[
+        list_issues,
+        add_label_to_issue,
+    ],
+)

contributing/samples/adk_triaging_agent/main.py

@@ -0,0 +1,164 @@
+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import asyncio
+import os
+import time
+
+import agent
+from dotenv import load_dotenv
+from google.adk.agents.run_config import RunConfig
+from google.adk.runners import InMemoryRunner
+from google.adk.sessions import Session
+from google.genai import types
+import requests
+
+load_dotenv(override=True)
+
+OWNER = os.getenv("OWNER", "google")
+REPO = os.getenv("REPO", "adk-python")
+GITHUB_TOKEN = os.getenv("GITHUB_TOKEN")
+BASE_URL = "https://api.github.com"
+headers = {
+    "Authorization": f"token {GITHUB_TOKEN}",
+    "Accept": "application/vnd.github.v3+json",
+}
+
+if not GITHUB_TOKEN:
+  print(
+      "Warning: GITHUB_TOKEN environment variable not set. API calls might"
+      " fail."
+  )
+
+
+async def fetch_specific_issue_details(issue_number: int):
+  """Fetches details for a single issue if it's unlabelled."""
+  if not GITHUB_TOKEN:
+    print("Cannot fetch issue details: GITHUB_TOKEN is not set.")
+    return None
+
+  url = f"{BASE_URL}/repos/{OWNER}/{REPO}/issues/{issue_number}"
+  print(f"Fetching details for specific issue: {url}")
+  try:
+    response = requests.get(url, headers=headers, timeout=60)
+    response.raise_for_status()
+    issue_data = response.json()
+    if not issue_data.get("labels") or len(issue_data["labels"]) == 0:
+      print(f"Issue #{issue_number} is unlabelled. Proceeding.")
+      return {
+          "number": issue_data["number"],
+          "title": issue_data["title"],
+          "body": issue_data.get("body", ""),
+      }
+    else:
+      print(f"Issue #{issue_number} is already labelled. Skipping.")
+      return None
+  except requests.exceptions.RequestException as e:
+    print(f"Error fetching issue #{issue_number}: {e}")
+    if hasattr(e, "response") and e.response is not None:
+      print(f"Response content: {e.response.text}")
+    return None
+
+
+async def main():
+  app_name = "triage_app"
+  user_id_1 = "triage_user"
+  runner = InMemoryRunner(
+      agent=agent.root_agent,
+      app_name=app_name,
+  )
+  session_11 = await runner.session_service.create_session(
+      app_name=app_name, user_id=user_id_1
+  )
+
+  async def run_agent_prompt(session: Session, prompt_text: str):
+    content = types.Content(
+        role="user", parts=[types.Part.from_text(text=prompt_text)]
+    )
+    print(f"\n>>>> Agent Prompt: {prompt_text}")
+    final_agent_response_parts = []
+    async for event in runner.run_async(
+        user_id=user_id_1,
+        session_id=session.id,
+        new_message=content,
+        run_config=RunConfig(save_input_blobs_as_artifacts=False),
+    ):
+      if event.content.parts and event.content.parts[0].text:
+        print(f"** {event.author} (ADK): {event.content.parts[0].text}")
+        if event.author == agent.root_agent.name:
+          final_agent_response_parts.append(event.content.parts[0].text)
+    print(f"<<<< Agent Final Output: {''.join(final_agent_response_parts)}\n")
+
+  event_name = os.getenv("EVENT_NAME")
+  issue_number_str = os.getenv("ISSUE_NUMBER")
+
+  if event_name == "issues" and issue_number_str:
+    print(f"EVENT: Processing specific issue due to '{event_name}' event.")
+    try:
+      issue_number = int(issue_number_str)
+      specific_issue = await fetch_specific_issue_details(issue_number)
+
+      if specific_issue:
+        prompt = (
+            f"A new GitHub issue #{specific_issue['number']} has been opened or"
+            f" reopened. Title: \"{specific_issue['title']}\"\nBody:"
+            f" \"{specific_issue['body']}\"\n\nBased on the rules, recommend an"
+            " appropriate label and its justification."
+            " Then, use the 'add_label_to_issue' tool to apply the label "
+            "directly to this issue."
+            f" The issue number is {specific_issue['number']}."
+        )
+        await run_agent_prompt(session_11, prompt)
+      else:
+        print(
+            f"No unlabelled issue details found for #{issue_number} or an error"
+            " occurred. Skipping agent interaction."
+        )
+
+    except ValueError:
+      print(f"Error: Invalid ISSUE_NUMBER received: {issue_number_str}")
+
+  else:
+    print(f"EVENT: Processing batch of issues (event: {event_name}).")
+    issue_count_str = os.getenv("ISSUE_COUNT_TO_PROCESS", "3")
+    try:
+      num_issues_to_process = int(issue_count_str)
+    except ValueError:
+      print(f"Warning: Invalid ISSUE_COUNT_TO_PROCESS. Defaulting to 3.")
+      num_issues_to_process = 3
+
+    prompt = (
+        f"List the first {num_issues_to_process} unlabelled open issues from"
+        f" the {OWNER}/{REPO} repository. For each issue, provide a summary,"
+        " recommend a label with justification, and then use the"
+        " 'add_label_to_issue' tool to apply the recommended label directly."
+    )
+    await run_agent_prompt(session_11, prompt)
+
+
+if __name__ == "__main__":
+  start_time = time.time()
+  print(
+      "Script start time:",
+      time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime(start_time)),
+  )
+  print("------------------------------------")
+  asyncio.run(main())
+  end_time = time.time()
+  print("------------------------------------")
+  print(
+      "Script end time:",
+      time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime(end_time)),
+  )
+  print("Total script execution time:", f"{end_time - start_time:.2f} seconds")