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Expose RequestParams._meta in ClientSession.call_tool #1231

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Expose RequestParams._meta in ClientSession.call_tool #1231

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7750c5f
feat: expose RequestParams._meta in ClientSession.call_tool
samchenatti Aug 3, 2025
16a171f
style: apply ruff format
samchenatti Aug 3, 2025
9b0efae
refactor: make _meta handling more readable
samchenatti Aug 4, 2025
d5c0549
fix: reorder meta argument to avoid a BC
samchenatti Aug 4, 2025
f021dec
Merge branch 'main' into expose_meta_in_tool_calling
samchenatti Sep 23, 2025
8f2ebb6
Use RequestParams.Meta for _meta in call_tool
samchenatti Oct 14, 2025
05e6b27
Implement test to assert _meta behavior in tool call
samchenatti Oct 14, 2025
796938e
Use default CallToolRequest.method value in call_tool
samchenatti Oct 14, 2025
701611d
Include None case for test_client_tool_call_with_meta
samchenatti Oct 14, 2025
2b61abb
Reimplement test_client_tool_call_with_meta to goes through all the p…
samchenatti Oct 14, 2025
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4 changes: 2 additions & 2 deletions src/mcp/client/session.py
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Original file line number Diff line number Diff line change
Expand Up @@ -286,6 +286,7 @@ async def call_tool(
name: str,
arguments: dict[str, Any] | None = None,
read_timeout_seconds: timedelta | None = None,
meta: dict[str, Any] | None = None,
progress_callback: ProgressFnT | None = None,
) -> types.CallToolResult:
"""Send a tools/call request with optional progress callback support."""
Expand All @@ -295,8 +296,7 @@ async def call_tool(
types.CallToolRequest(
method="tools/call",
params=types.CallToolRequestParams(
name=name,
arguments=arguments,
name=name, arguments=arguments, _meta=types.RequestParams.Meta(**(meta or {}))
),
)
),
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