Go MCP SDK: Malformed Missing

StatusFailed

Transportstdio

TestedOct 4, 2026

Duration120 ms

Observations

Recorded behavior from this compatibility test.

connection closed: calling "tools/call": client is closing: invalid message version tag ""; expected "2.0"

Supporting records captured for this run.

error

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

View raw evidence

connection closed: calling "tools/call": client is closing: invalid message version tag ""; expected "2.0"