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feat(core): add support for MCP 2026 stateless draft and auto-negotiation fallback - #704

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anubhav756 merged 19 commits into
anubhav-mcp-draftfrom
anubhav-draft-negotiation
Jul 1, 2026
Merged

anubhav756 merged 19 commits into
anubhav-mcp-draftfrom
anubhav-draft-negotiation

test: parameterize integration tests to run comprehensively for both …

caf7b85
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Google Cloud Build / adk-python-sdk-pr-py314 (toolbox-testing-438616) succeeded Jul 1, 2026 in 12m 21s

Summary

Build Information

Trigger adk-python-sdk-pr-py314
Build 6570bbf3-de6e-48da-82e4-8d1e36a89a5f
Start 2026-07-01T06:27:21-07:00
Duration 12m11.992s
Status SUCCESS

Steps

Step Status Duration
Install requirements SUCCESS 11m45.877s
Run integration tests SUCCESS 19.649s

Details


starting build "6570bbf3-de6e-48da-82e4-8d1e36a89a5f"

FETCHSOURCE
From https://github.com/googleapis/mcp-toolbox-sdk-python
 * branch            caf7b85471876bc72c0f04cfe505e841cf3fbb92 -> FETCH_HEAD
HEAD is now at caf7b85 test: parameterize integration tests to run comprehensively for both stable and draft MCP versions
GitCommit:
caf7b85471876bc72c0f04cfe505e841cf3fbb92
BUILD
Starting Step #0 - "Install requirements"
Step #0 - "Install requirements": Pulling image: python:3.14
Step #0 - "Install requirements": 3.14: Pulling from library/python
Step #0 - "Install requirements": aa3e9ef32f73: Pulling fs layer
Step #0 - "Install requirements": 3f59c84a7863: Pulling fs layer
Step #0 - "Install requirements": 30d0db852850: Pulling fs layer
Step #0 - "Install requirements": 0252e6abaf0f: Pulling fs layer
Step #0 - "Install requirements": bec7375c137e: Pulling fs layer
Step #0 - "Install requirements": e47c398c1abe: Pulling fs layer
Step #0 - "Install requirements": a07254a044f1: Pulling fs layer
Step #0 - "Install requirements": a07254a044f1: Waiting
Step #0 - "Install requirements": bec7375c137e: Verifying Checksum
Step #0 - "Install requirements": bec7375c137e: Download complete
Step #0 - "Install requirements": a07254a044f1: Verifying Checksum
Step #0 - "Install requirements": a07254a044f1: Download complete
Step #0 - "Install requirements": 3f59c84a7863: Download complete
Step #0 - "Install requirements": e47c398c1abe: Verifying Checksum
Step #0 - "Install requirements": e47c398c1abe: Download complete
Step #0 - "Install requirements": aa3e9ef32f73: Download complete
Step #0 - "Install requirements": 30d0db852850: Verifying Checksum
Step #0 - "Install requirements": 30d0db852850: Download complete
Step #0 - "Install requirements": 0252e6abaf0f: Verifying Checksum
Step #0 - "Install requirements": 0252e6abaf0f: Download complete
Step #0 - "Install requirements": aa3e9ef32f73: Pull complete
Step #0 - "Install requirements": 3f59c84a7863: Pull complete
Step #0 - "Install requirements": 30d0db852850: Pull complete
Step #0 - "Install requirements": 0252e6abaf0f: Pull complete
Step #0 - "Install requirements": bec7375c137e: Pull complete
Step #0 - "Install requirements": e47c398c1abe: Pull complete
Step #0 - "Install requirements": a07254a044f1: Pull complete
Step #0 - "Install requirements": Digest: sha256:09b29c360b84742bf98eba40b214f7f6b4b53286bb2c8a8b5b1afa188a8d9c0e
Step #0 - "Install requirements": Status: Downloaded newer image for python:3.14
Step #0 - "Install requirements": docker.io/library/python:3.14
Step #0 - "Install requirements": Collecting uv
Step #0 - "Install requirements":   Downloading uv-0.11.26-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (11 kB)
Step #0 - "Install requirements": Downloading uv-0.11.26-py3-none-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (26.3 MB)
Step #0 - "Install requirements":    ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 26.3/26.3 MB 131.0 MB/s  0:00:00
Step #0 - "Install requirements": Installing collected packages: uv
Step #0 - "Install requirements": Successfully installed uv-0.11.26
Step #0 - "Install requirements": WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager, possibly rendering your system unusable. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv. Use the --root-user-action option if you know what you are doing and want to suppress this warning.
Step #0 - "Install requirements": Using CPython 3.14.6 interpreter at: /usr/local/bin/python3
Step #0 - "Install requirements": Creating virtual environment at: /workspace/venv
Step #0 - "Install requirements": Activate with: source /workspace/venv/bin/activate
Step #0 - "Install requirements": Using Python 3.14.6 environment at: /workspace/venv
Step #0 - "Install requirements": Resolved 1 package in 292ms
Step #0 - "Install requirements": Downloading uv (25.0MiB)
Step #0 - "Install requirements":  Downloaded uv
Step #0 - "Install requirements": Prepared 1 package in 528ms
Step #0 - "Install requirements": warning: Failed to hardlink files; falling back to full copy. This may lead to degraded performance.
Step #0 - "Install requirements":          If the cache and target directories are on different filesystems, hardlinking may not be supported.
Step #0 - "Install requirements":          If this is intentional, set `export UV_LINK_MODE=copy` or use `--link-mode=copy` to suppress this warning.
Step #0 - "Install requirements": Installed 1 package in 59ms
Step #0 - "Install requirements":  + uv==0.11.26
Step #0 - "Install requirements": Using Python 3.14.6 environment at: /workspace/venv
Step #0 - "Install requirements": Resolved 124 packages in 2.56s
Step #0 - "Install requirements":    Building toolbox-core @ file:///workspace/packages/toolbox-core
Step #0 - "Install requirements": Downloading google-adk (2.7MiB)
Step #0 - "Install requirements": Downloading google-cloud-aiplatform (8.9MiB)
Step #0 - "Install requirements": Downloading pyarrow (46.6MiB)
Step #0 - "Install requirements": Downloading sqlalchemy (3.1MiB)
Step #0 - "Install requirements": Downloading grpcio (6.5MiB)
Step #0 - "Install requirements": Downloading aiohttp (1.7MiB)
Step #0 - "Install requirements": Downloading google-api-python-client (14.9MiB)
Step #0 - "Install requirements": Downloading pydantic-core (2.0MiB)
Step #0 - "Install requirements": Downloading google-cloud-discoveryengine (3.2MiB)
Step #0 - "Install requirements": Downloading cryptography (4.5MiB)
Step #0 - "Install requirements":       Built toolbox-core @ file:///workspace/packages/toolbox-core
Step #0 - "Install requirements":  Downloaded pydantic-core
Step #0 - "Install requirements":  Downloaded aiohttp
Step #0 - "Install requirements":  Downloaded sqlalchemy
Step #0 - "Install requirements":  Downloaded grpcio
Step #0 - "Install requirements":  Downloaded cryptography
Step #0 - "Install requirements":  Downloaded google-adk
Step #0 - "Install requirements":  Downloaded google-cloud-discoveryengine
Step #0 - "Install requirements":  Downloaded google-api-python-client
Step #0 - "Install requirements":  Downloaded pyarrow
Step #0 - "Install requirements":  Downloaded google-cloud-aiplatform
Step #0 - "Install requirements": Prepared 124 packages in 3.63s
Step #0 - "Install requirements": warning: Failed to hardlink files; falling back to full copy. This may lead to degraded performance.
Step #0 - "Install requirements":          If the cache and target directories are on different filesystems, hardlinking may not be supported.
Step #0 - "Install requirements":          If this is intentional, set `export UV_LINK_MODE=copy` or use `--link-mode=copy` to suppress this warning.
Step #0 - "Install requirements": Installed 124 packages in 1.78s
Step #0 - "Install requirements":  + aiohappyeyeballs==2.6.2
Step #0 - "Install requirements":  + aiohttp==3.14.1
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Step #0 - "Install requirements":  + annotated-types==0.7.0
Step #0 - "Install requirements":  + anyio==4.14.1
Step #0 - "Install requirements":  + attrs==26.1.0
Step #0 - "Install requirements":  + authlib==1.7.2
Step #0 - "Install requirements":  + certifi==2026.6.17
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Step #0 - "Install requirements":  + cryptography==49.0.0
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Step #0 - "Install requirements":  + distro==1.9.0
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Step #0 - "Install requirements":  + fastapi==0.138.2
Step #0 - "Install requirements":  + frozenlist==1.8.0
Step #0 - "Install requirements":  + google-adk==1.34.1
Step #0 - "Install requirements":  + google-api-core==2.31.0
Step #0 - "Install requirements":  + google-api-python-client==2.198.0
Step #0 - "Install requirements":  + google-auth==2.53.0
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Step #0 - "Install requirements":  + mcp==1.28.1
Step #0 - "Install requirements":  + mmh3==5.2.1
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Step #0 - "Install requirements":  + oauthlib==3.3.1
Step #0 - "Install requirements":  + opentelemetry-api==1.41.1
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Step #0 - "Install requirements":  + opentelemetry-exporter-otlp-proto-common==1.41.1
Step #0 - "Install requirements":  + opentelemetry-exporter-otlp-proto-http==1.41.1
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Step #0 - "Install requirements":  + opentelemetry-semantic-conventions==0.62b1
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Step #0 - "Install requirements":  + pycparser==3.0
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Step #0 - "Install requirements":  + pyjwt==2.13.0
Step #0 - "Install requirements":  + pyopenssl==26.3.0
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Step #0 - "Install requirements":  + requests==2.34.2
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Step #0 - "Install requirements":  + typing-inspection==0.4.2
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Step #0 - "Install requirements":  + uritemplate==4.2.0
Step #0 - "Install requirements":  + urllib3==2.7.0
Step #0 - "Install requirements":  + uvicorn==0.49.0
Step #0 - "Install requirements":  + watchdog==6.0.0
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Step #0 - "Install requirements":  + wrapt==2.2.2
Step #0 - "Install requirements":  + yarl==1.24.2
Step #0 - "Install requirements":  + zipp==4.1.0
Step #0 - "Install requirements": Using Python 3.14.6 environment at: /workspace/venv
Step #0 - "Install requirements": Resolved 160 packages in 2.02s
Step #0 - "Install requirements":    Building toolbox-adk @ file:///workspace/packages/toolbox-adk
Step #0 - "Install requirements": Downloading pygments (1.2MiB)
Step #0 - "Install requirements": Downloading ast-serialize (1.2MiB)
Step #0 - "Install requirements": Downloading jedi (4.7MiB)
Step #0 - "Install requirements": Downloading mypy (14.3MiB)
Step #0 - "Install requirements": Downloading black (1.8MiB)
Step #0 - "Install requirements":  Downloaded ast-serialize
Step #0 - "Install requirements":  Downloaded black
Step #0 - "Install requirements":       Built toolbox-adk @ file:///workspace/packages/toolbox-adk
Step #0 - "Install requirements":  Downloaded pygments
Step #0 - "Install requirements":  Downloaded mypy
Step #0 - "Install requirements":  Downloaded jedi
Step #0 - "Install requirements":    Building numpy==2.1.3
Step #0 - "Install requirements":       Built numpy==2.1.3
Step #0 - "Install requirements": Prepared 36 packages in 11m 03s
Step #0 - "Install requirements": warning: Failed to hardlink files; falling back to full copy. This may lead to degraded performance.
Step #0 - "Install requirements":          If the cache and target directories are on different filesystems, hardlinking may not be supported.
Step #0 - "Install requirements":          If this is intentional, set `export UV_LINK_MODE=copy` or use `--link-mode=copy` to suppress this warning.
Step #0 - "Install requirements": Installed 36 packages in 1.03s
Step #0 - "Install requirements":  + ast-serialize==0.6.0
Step #0 - "Install requirements":  + asttokens==3.0.1
Step #0 - "Install requirements":  + black==26.5.1
Step #0 - "Install requirements":  + coverage==7.14.3
Step #0 - "Install requirements":  + decorator==5.3.1
Step #0 - "Install requirements":  + executing==2.2.1
Step #0 - "Install requirements":  + iniconfig==2.3.0
Step #0 - "Install requirements":  + ipython==9.15.0
Step #0 - "Install requirements":  + ipython-pygments-lexers==1.1.1
Step #0 - "Install requirements":  + isort==8.0.1
Step #0 - "Install requirements":  + jedi==0.20.0
Step #0 - "Install requirements":  + librt==0.12.0
Step #0 - "Install requirements":  + matplotlib-inline==0.2.2
Step #0 - "Install requirements":  + mypy==2.1.0
Step #0 - "Install requirements":  + mypy-extensions==1.1.0
Step #0 - "Install requirements":  + numpy==2.1.3
Step #0 - "Install requirements":  + parso==0.8.7
Step #0 - "Install requirements":  + pathspec==1.1.1
Step #0 - "Install requirements":  + pexpect==4.9.0
Step #0 - "Install requirements":  + platformdirs==4.10.0
Step #0 - "Install requirements":  + pluggy==1.6.0
Step #0 - "Install requirements":  + prompt-toolkit==3.0.52
Step #0 - "Install requirements":  + psutil==7.2.2
Step #0 - "Install requirements":  + ptyprocess==0.7.0
Step #0 - "Install requirements":  + pure-eval==0.2.3
Step #0 - "Install requirements":  + pygments==2.20.0
Step #0 - "Install requirements":  + pytest==9.0.3
Step #0 - "Install requirements":  + pytest-asyncio==1.4.0
Step #0 - "Install requirements":  + pytest-cov==7.1.0
Step #0 - "Install requirements":  + pytest-mock==3.15.1
Step #0 - "Install requirements":  + pytokens==0.4.1
Step #0 - "Install requirements":  + stack-data==0.6.3
Step #0 - "Install requirements":  + tokenize-rt==6.2.0
Step #0 - "Install requirements":  + toolbox-adk==1.0.1 (from file:///workspace/packages/toolbox-adk)
Step #0 - "Install requirements":  + traitlets==5.15.1
Step #0 - "Install requirements":  + wcwidth==0.8.2
Finished Step #0 - "Install requirements"
Starting Step #1 - "Run integration tests"
Step #1 - "Run integration tests": Already have image (with digest): python:3.14
Step #1 - "Run integration tests": ============================= test session starts ==============================
Step #1 - "Run integration tests": platform linux -- Python 3.14.6, pytest-9.0.3, pluggy-1.6.0
Step #1 - "Run integration tests": rootdir: /workspace/packages/toolbox-adk
Step #1 - "Run integration tests": configfile: pyproject.toml
Step #1 - "Run integration tests": plugins: cov-7.1.0, mock-3.15.1, asyncio-1.4.0, anyio-4.14.1
Step #1 - "Run integration tests": asyncio: mode=Mode.STRICT, debug=False, asyncio_default_fixture_loop_scope=None, asyncio_default_test_loop_scope=function
Step #1 - "Run integration tests": collected 118 items
Step #1 - "Run integration tests": 
Step #1 - "Run integration tests": tests/integration/test_integration.py ...............................s.. [ 28%]
Step #1 - "Run integration tests": .............................s                                           [ 54%]
Step #1 - "Run integration tests": tests/unit/test_client.py ..............                                 [ 66%]
Step #1 - "Run integration tests": tests/unit/test_credentials.py ................                          [ 79%]
Step #1 - "Run integration tests": tests/unit/test_tool.py ..............                                   [ 91%]
Step #1 - "Run integration tests": tests/unit/test_toolset.py ..........                                    [100%]
Step #1 - "Run integration tests": 
Step #1 - "Run integration tests": =============================== warnings summary ===============================
Step #1 - "Run integration tests": ../../venv/lib/python3.14/site-packages/google/genai/types.py:42
Step #1 - "Run integration tests":   /workspace/venv/lib/python3.14/site-packages/google/genai/types.py:42: DeprecationWarning: '_UnionGenericAlias' is deprecated and slated for removal in Python 3.17
Step #1 - "Run integration tests":     VersionedUnionType = Union[builtin_types.UnionType, _UnionGenericAlias]
Step #1 - "Run integration tests": 
Step #1 - "Run integration tests": tests/integration/test_integration.py: 24 warnings
Step #1 - "Run integration tests":   /workspace/packages/toolbox-core/src/toolbox_core/utils.py:165: DeprecationWarning: 'asyncio.iscoroutinefunction' is deprecated and slated for removal in Python 3.16; use inspect.iscoroutinefunction() instead
Step #1 - "Run integration tests":     if asyncio.iscoroutinefunction(source):
Step #1 - "Run integration tests": 
Step #1 - "Run integration tests": tests/integration/test_integration.py: 18 warnings
Step #1 - "Run integration tests":   /workspace/packages/toolbox-core/src/toolbox_core/utils.py:56: UserWarning: This connection is using HTTP. To prevent credential exposure, please ensure all communication is sent over HTTPS.
Step #1 - "Run integration tests":     warnings.warn(
Step #1 - "Run integration tests": 
Step #1 - "Run integration tests": tests/integration/test_integration.py::TestToolboxAdkIntegration::test_3lo_flow_simulation[http://localhost:5000]
Step #1 - "Run integration tests": tests/integration/test_integration.py::TestToolboxAdkIntegration::test_3lo_flow_simulation[http://localhost:5000]
Step #1 - "Run integration tests": tests/integration/test_integration.py::TestToolboxAdkIntegration::test_3lo_flow_simulation[http://localhost:5001]
Step #1 - "Run integration tests": tests/integration/test_integration.py::TestToolboxAdkIntegration::test_3lo_flow_simulation[http://localhost:5001]
Step #1 - "Run integration tests": tests/unit/test_credentials.py::TestCredentialStrategy::test_from_adk_auth_config
Step #1 - "Run integration tests": tests/unit/test_tool.py::TestToolboxTool::test_3lo_request_credential_when_missing
Step #1 - "Run integration tests": tests/unit/test_tool.py::TestToolboxTool::test_3lo_uses_existing_credential
Step #1 - "Run integration tests": tests/unit/test_tool.py::TestToolboxTool::test_3lo_exception_reraise
Step #1 - "Run integration tests": tests/unit/test_tool.py::TestToolboxTool::test_3lo_exception_fallback
Step #1 - "Run integration tests":   /workspace/venv/lib/python3.14/site-packages/google/adk/auth/auth_tool.py:94: DeprecationWarning: This method is deprecated. Use credential_key instead.
Step #1 - "Run integration tests":     self.credential_key = self.get_credential_key()
Step #1 - "Run integration tests": 
Step #1 - "Run integration tests": -- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
Step #1 - "Run integration tests": ================================ tests coverage ================================
Step #1 - "Run integration tests": _______________ coverage: platform linux, python 3.14.6-final-0 ________________
Step #1 - "Run integration tests": 
Step #1 - "Run integration tests": Name                             Stmts   Miss  Cover
Step #1 - "Run integration tests": ----------------------------------------------------
Step #1 - "Run integration tests": src/toolbox_adk/__init__.py          6      0   100%
Step #1 - "Run integration tests": src/toolbox_adk/client.py           79      0   100%
Step #1 - "Run integration tests": src/toolbox_adk/credentials.py      74      3    96%
Step #1 - "Run integration tests": src/toolbox_adk/tool.py            128      4    97%
Step #1 - "Run integration tests": src/toolbox_adk/toolset.py          55      0   100%
Step #1 - "Run integration tests": src/toolbox_adk/version.py           1      0   100%
Step #1 - "Run integration tests": ----------------------------------------------------
Step #1 - "Run integration tests": TOTAL                              343      7    98%
Step #1 - "Run integration tests": Required test coverage of 90% reached. Total coverage: 97.96%
Step #1 - "Run integration tests": ================= 116 passed, 2 skipped, 52 warnings in 13.20s =================
Finished Step #1 - "Run integration tests"
PUSH
DONE

Build Log: https://console.cloud.google.com/logs/viewer?advancedFilter=resource.type%3D%22build%22+AND+resource.labels.build_id%3D%226570bbf3-de6e-48da-82e4-8d1e36a89a5f%22+AND+resource.labels.build_trigger_id%3D%22ebfe27b5-a462-408b-a147-84a7a2295c4b%22&project=toolbox-testing-438616