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Test run

C# MCP SDK

Duplicate Response

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ImplementationC# MCP SDKv2.2.0

StatusPassed

Transportstdio

TestedSep 26, 2026

Durationnull ms

Observations

Recorded behavior from this compatibility test.

No call-level duplicate error surfaced
Same-session ping succeeded after the duplicate response.

Run details

Scenario: Duplicate Response
Category: protocol
Version: 2.2.0
Run ID: test-run-0-10-0-c-mcp-sdk-2-2-0-stdio-duplicate-response

Implementation repository

MCP compatibility data, with evidence and limitations in context.

Methodology & limitations Source code MCP Failure Lab

C# MCP SDK: Duplicate Response | MCP Failure Observatory