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Evan MattsonandGitHub
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* Python: Fix hosted MCP replay producing orphan function_call_output Resolves part of #5546. After a turn ran a hosted MCP / Foundry-toolbox-MCP tool, the next turn's replayed input array carried a function_call_output with an mcp_* call_id and no matching function_call, and the Responses API returned a 400. Two layers covered here: * Chat-client serialize layer (packages/openai): adds mcp_server_tool_call and mcp_server_tool_result cases to _prepare_message_for_openai and _prepare_content_for_openai. Pairs are coalesced via a post-pass into a single mcp_call input item carrying both arguments and output. Orphan results are dropped (debug-logged) rather than serialized as orphan function_call_output, which is what the Responses API rejected. * Host read layer (packages/foundry_hosting): _item_to_message and _output_item_to_message now route custom_tool_call_output whose call_id.startswith("mcp_") to Content.from_mcp_server_tool_result. Non-mcp_ call_ids continue to produce Content.from_function_result. Symmetric with the host write-side choice for hosted-MCP results. Two further fixes (agentserver SDK additions, host write-side single-item emission) remain tracked on the issue and depend on an SDK release. * Python: Fix pyright unknown-type in _stringify_mcp_output cast(Sequence[Any], output) after the isinstance check so pyright stops flagging the loop variable as unknown. Also normalizes a couple of em-dashes in docstrings I introduced in the prior commit. * Python: Harden _stringify_mcp_output for dict-shaped MCP outputs Address Copilot review on PR #5581. Today the helper falls back to str() for any non-string, non-text-attribute entry, which produces Python repr (single-quoted dicts) for the canonical MCP raw-JSON text-content shape `{"type": "text", "text": "..."}` and any other dict-shaped output. Three small changes: * List-entry path: prefer plain string entries, then `.text` attribute (Content objects), then `entry["text"]` for Mapping entries in the canonical MCP shape, then JSON-encode anything else. * Final fallback: `json.dumps(output, default=str)` so Mappings and scalars produce valid JSON rather than Python repr. * Two new unit tests covering the dict-with-text shape and the non-text-dict JSON fallback. * Python: Suppress mypy redundant-cast on _stringify_mcp_output narrowing The cast is needed by pyright (reportUnknownVariableType) but mypy considers it redundant after the preceding isinstance narrowing. Pyright's behavior is correct for the strict-mode reporting we run, so keep the cast and silence mypy on the line.
Foundry Hosting
This package provides the integration of Agent Framework agents and workflows with the Foundry Agent Server, which can be hosted on Foundry infrastructure.