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litellm/tests/unit/experimental_mcp_client
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joshua-berri 4aec80f5ee
fix(mcp): upgrade to MCP SDK 2.3.0 and raise the per-event SSE size cap (#47034) 
* fix(mcp): upgrade to MCP SDK 2.3.0 and raise the per-event SSE size cap

MCP SDK 2.x reads Streamable HTTP responses through httpx2's SSE parser,
which rejects any single event over 1 MiB, so a large tools/call result
failed with 'SSE stream ended without a response'. mcp 2.3.0 exposes
max_sse_event_size, and MCPClient now passes a 64 MiB default,
configurable with LITELLM_MCP_MAX_SSE_EVENT_SIZE_BYTES

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

* fix(mcp): fall back for invalid SSE event limits

* test(mcp): verify configured SSE limits and recovery

* chore(mcp): remove redundant dependency comment

---------

Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Co-authored-by: Joshua Valluru <326636767+joshua-berri@users.noreply.github.com>
2026-10-20 16:00:00 -07:00
..
__init__.py test: move tests/test_litellm root and small trees into tests/unit (#43186) 2026-09-25 11:30:43 -07:00
test_mcp_client.py fix(mcp): upgrade to MCP SDK 2.3.0 and raise the per-event SSE size cap (#47034) 2026-10-20 16:00:00 -07:00
test_tools.py feat(mcp): add portable catalog pagination (#44446) 2026-10-06 18:54:50 -07:00