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Codex

OpenAI's Codex CLI supports MCP over stdio. Configuration lives in ~/.codex/config.toml.

Configure​

[[mcp_servers]]
name = "versionx"
command = "versionx"
args = ["mcp", "--transport", "stdio"]

Restart the Codex session. The Versionx tools are available as versionx.inspect, versionx.plan, etc.

Notes​

  • Codex favors fewer, workflow-shaped tools. Versionx's ~10-tool design fits cleanly.
  • versionx.propose_and_apply uses MCP elicitation; Codex supports elicitation in recent builds. On older builds, Versionx falls back to plan followed by apply.

See also​