Show HN: What the Harness? LLM agent inconsistencies in MCP implementation

Hi HN,

We (Polytomic) noticed that LLM agents (Claude, Codex, Grok, Amp, etc) are inconsistent in their MCP implementations.

We made tables inspired by the browser-compatibility tables of yore that list the differences.

Hope you find this as useful as we did!

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Comments URL: https://news.ycombinator.com/item?id=50170765

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