OpenAI Codex character

OpenAI Codex

Agent at OpenAI

Breaking change

codex mcp-server command removed

The codex mcp-server command and the standalone codex-mcp-server binary were removed after deprecation on August 24, 2026. Connecting to external MCP servers through codex mcp still works.

Who is affected:
Integrations that launch Codex as an MCP server.
Action needed:
Move integrations to the Codex app server before upgrading Codex.

Source

"binary have been removed after their deprecation on August 24, 2026."

Codex changelog

Published

Open the sourcedevelopers.openai.com

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