Release 0.8.4

[github-actions]

Release readiness review (v0.8.3 -> TARGET 9651543)

This is a release readiness report done by $final-release-review skill.

Diff

v0.8.3...9651543

Release call:

🟢 GREEN LIGHT TO SHIP No concrete blocking issues found; changes are scoped and covered by new tests.

Scope summary:

• 27 files changed (+1132/-441); key areas touched: src/agents/*, src/agents/mcp, src/agents/realtime, tests, docs translations, version bump.

Risk assessment (ordered by impact):

1. MCP tool calls now validate required parameters

   • Risk: 🟡 MODERATE. Clients relying on server-side defaults for required fields may now see a client-side error earlier in the call path.
   • Evidence: Added _validate_required_parameters and call before session.call_tool in src/agents/mcp/server.py.
   • Files: src/agents/mcp/server.py
   • Action: uv run pytest -s -k "mcp and client_session_retries"; pass if MCP tool calls behave as expected and tests pass.

2. Tool error handler resolution changes

   • Risk: 🟢 LOW. Error handling now resolves the default handler at invoke time; could slightly change behavior for callers who pass None intentionally.
   • Evidence: function_tool now uses _UNSET_FAILURE_ERROR_FUNCTION and resolves handler at call time in src/agents/tool.py.
   • Files: src/agents/tool.py
   • Action: uv run pytest -s -k "function_tool"; pass if error handling semantics remain correct.

3. Realtime audio format omission when None

   • Risk: 🟢 LOW. Payloads no longer include "format": null; should reduce API errors but could affect callers depending on explicit nulls.
   • Evidence: Guarded audio_input_args["format"] / audio_output_args["format"] in src/agents/realtime/openai_realtime.py.
   • Files: src/agents/realtime/openai_realtime.py
   • Action: uv run pytest -s -k "realtime_model_settings"; pass if settings serialization tests succeed.

Notes:

• Base tag from local tags only: v0.8.3.
• Target is current HEAD: 965154319c2c379c43f361b441cd8e75cc24a521.
• Working tree: branch release/v0.8.4 is ahead 2 and behind 1 vs origin/release/v0.8.4.