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Supergateway: Invalid JSON-RPC Version | MCP Failure Observatory

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Test run

Supergateway

Invalid JSON-RPC Version

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ImplementationSupergatewayv4.0.0

StatusPassed

Transportstdio

TestedSep 24, 2026

Durationnull ms

Observations

Recorded behavior from this compatibility test.

The malformed response reached the bound and recovery passed.

Evidence

Supporting records captured for this run.

1

observation

The malformed response reached the bound and recovery passed.

Source: https://github.com/anilloutombam/mcp-failure-lab/blob/main/docs/compatibility/supergateway-4.0.0.md

View raw evidence

The malformed response reached the bound and recovery passed.

Run details

Scenario: Invalid JSON-RPC Version
Category: protocol
Version: 4.0.0
Run ID: qdC4SZPTacxoSuu1k1MpQh

Source report Implementation repository

MCP compatibility data, with evidence and limitations in context.

Methodology & limitations Source code MCP Failure Lab