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Arize Phoenix ships Claude Code, Codex and Cursor plugins plus an MCP skills root in two releases a day apart
Phoenix 20.10.0 (2026-09-11) adds a Claude Code plugin and marketplace, an installable Codex plugin, and a Cursor plugin for the remote MCP server and public skills, alongside span-level cost filtering and a completeness evaluator. Phoenix 20.11.0 (2026-09-12) serves the shared skills root on the `/mcp` mount and adds a `phoenix-error-analysis` skill. One fix in 20.10.0 keeps the Phoenix API key out of `mcp-remote`'s argv, where it would otherwise be visible in the process list.
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