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Eduard van Valkenburg f2d02e58b3 Python: Add hosting core and Responses channel (#6580)
* Add Python hosting core and Responses channel

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Address hosting core review feedback

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Adopt source pyright typing setup for hosting packages

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* Cover ResponsesChannel custom path routing

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* Align hosting tests with package layout

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* Fix hosting workflow fixture imports in aggregate tests

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* Apply useful Responses channel hardening

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* Fix hosting package typing checks

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* Fix hosting pyright under Python 3.11

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* Avoid static diskcache dependency in hosting

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* Fix aggregate typing and Docker test resilience

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* Simplify local Responses workflow sample

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* Clarify generic hosting is not Foundry hosting

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* Revert "Clarify generic hosting is not Foundry hosting"

This reverts commit 73b584d919053bed43a258d75dc2b76406e9c181.

* Clarify isolation key source flexibility

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* Clarify isolation header reuse boundary

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* Support multimodal Responses channel outputs

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* Preserve multimodal streaming Responses output

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* Stream Responses output items from updates

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* Improve Responses streaming output handling

* Tighten Responses channel default option handling

- Restore full option parsing in parse_responses_request: known fields
  are remapped (max_output_tokens→max_tokens, parallel_tool_calls→
  allow_multiple_tool_calls), transport/session keys excluded, None
  values dropped, everything else forwarded as-is so run_hook can
  inspect the full set.
- Add a default _strip_options_hook on ResponsesChannel that removes
  all parsed options before reaching the agent. Callers cannot inject
  generation params (temperature, instructions, tools, …) unless the
  host explicitly allows it.
- A custom run_hook replaces the default entirely and receives the
  full ChannelRequest.options plus the raw protocol_request.
- Update tests to cover remap, default-strip, and custom-hook paths.
- Clarify host debug-log docstring to match new option flow.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
2026-06-23 20:56:46 +00:00

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