Introduces two major capabilities:
- Workflow runtime: graph-based execution engine for composing
deterministic execution flows for agentic apps, with support for
routing, fan-out/fan-in, loops, retry, state management, dynamic
nodes, human-in-the-loop, and nested workflows
- Task API: structured agent-to-agent delegation with multi-turn
task mode, single-turn controlled output, mixed delegation
patterns, human-in-the-loop, and task agents as workflow nodes
Co-Authored-By: Bo Yang <ybo@google.com>
Co-Authored-By: George Weale <gweale@google.com>
Co-Authored-By: Sean Zhou <seanzhougoogle@google.com>
Co-Authored-By: Shangjie Chen <deanchen@google.com>
Co-Authored-By: Swapnil Agarwal <swapnilag@google.com>
Co-Authored-By: Wei Sun <weisun@google.com>
Co-Authored-By: Xuan Yang <xygoogle@google.com>
Co-Authored-By: Yifan Wang <wanyif@google.com>
Change-Id: I35932c50cfe29ff68559e3781713dbb5eb7b3382
Merge https://github.com/google/adk-python/pull/3932
## Summary
Upgrade GitHub Actions to their latest versions to ensure compatibility with Node 24, as Node 20 will reach end-of-life in April 2026.
## Changes
| Action | Old Version(s) | New Version | Release | Files |
|--------|---------------|-------------|---------|-------|
| `actions/checkout` | [`v5`](https://github.com/actions/checkout/releases/tag/v5) | [`v6`](https://github.com/actions/checkout/releases/tag/v6) | [Release](https://github.com/actions/checkout/releases/tag/v6) | analyze-releases-for-adk-docs-updates.yml, check-file-contents.yml, discussion_answering.yml, isort.yml, pr-triage.yml, pyink.yml, python-unit-tests.yml, stale-bot.yml, triage.yml, upload-adk-docs-to-vertex-ai-search.yml |
## Context
Per [GitHub's announcement](https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/), Node 20 is being deprecated and runners will begin using Node 24 by default starting March 4th, 2026.
### Why this matters
- **Node 20 EOL**: April 2026
- **Node 24 default**: March 4th, 2026
- **Action**: Update to latest action versions that support Node 24
### Security Note
Actions that were previously pinned to commit SHAs remain pinned to SHAs (updated to the latest release SHA) to maintain the security benefits of immutable references.
### Testing
These changes only affect CI/CD workflow configurations and should not impact application functionality. The workflows should be tested by running them on a branch before merging.
Co-authored-by: Xiang (Sean) Zhou <seanzhougoogle@google.com>
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/adk-python/pull/3932 from salmanmkc:upgrade-github-actions-node24 0ffbb0b7b5
PiperOrigin-RevId: 845813166
Verified with uv on Python 3.12 and 3.13 using the same ignores as CI.
3.12:
uv python install 3.12 && uv venv --python 3.12 .venv && source .venv/bin/activate
uv sync --extra test --extra eval --extra a2a
python -m pytest tests/unittests --ignore=tests/unittests/artifacts/test_artifact_service.py --ignore=tests/unittests/tools/google_api_tool/test_googleapi_to_openapi_converter.py
3.13: repeated the above with 3.13 (separate env)
Result: All unit tests passed
PiperOrigin-RevId: 794669437
* Move unit tests to root package.
* Adds deps to "test" extra, and mark two broken tests in tests/unittests/auth/test_auth_handler.py
* Adds github workflow
* minor fix in lite_llm.py for python 3.9.
* format pyproject.toml
