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Java MCP SDK: Missing Jsonrpc Recovery | MCP Failure Observatory

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Test run

Java MCP SDK

Missing Jsonrpc Recovery

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ImplementationJava MCP SDKv2.0.1

StatusFailed

Transportstdio

TestedOct 4, 2026

Duration4.6 s

Observations

Recorded behavior from this compatibility test.

AssertionError: Same-client ping failed after malformed response

Evidence

Supporting records captured for this run.

1

error

AssertionError: Same-client ping failed after malformed response

Source: https://github.com/anilloutombam/mcp-failure-lab/blob/main/docs/compatibility/v0.12.0.md

View raw evidence

AssertionError: Same-client ping failed after malformed response

Run details

Scenario: Missing Jsonrpc Recovery
Category: protocol
Version: 2.0.1
Run ID: SSdKRdF7e0XIFT3zzQYAjr

Source report Implementation repository

MCP compatibility data, with evidence and limitations in context.

Methodology & limitations Source code MCP Failure Lab