Codex MCP server removal
Codex MCP server removal
Deprecated. Use the Codex app server or the Codex plugin for Claude Code
The codex mcp-server command and the standalone codex-mcp-server binary have
been removed. Integrations that launch either command must migrate before
upgrading Codex. The previous MCP tool reference and Agents SDK examples on this
page are no longer supported.
Use the Codex app server
Use the Codex app server for integrations that need authentication, conversation history, approvals, and streamed agent events.
The app server uses its own JSON-RPC protocol. It isn't an MCP server or a drop-in replacement for an MCP client: update your integration to use the app-server protocol instead of MCP tool calls. The app-server command is experimental and isn't supported for production workloads.
Connect Codex to MCP tools
Codex continues to support external MCP servers.
Use codex mcp to manage those connections. The removal affects hosting Codex
as an MCP server.