Buyer · Install

OpenAI Codex

Add the Custena MCP server to Codex by appending a block to ~/.codex/config.toml and authenticating with codex mcp login custena.

OpenAI Codex - add MCP server manually

Open (or create) this file:

~/.codex/config.toml

And append this block:

[mcp_servers.custena]

url = "https://api.custena.com/mcp"

Then authenticate (Codex does its own OAuth flow against Custena):

codex mcp login custena

Do not add bearer_token or default_tools_approval_mode under [mcp_servers.custena] - Codex rejects both for streamable_http servers. Authentication is handled by codex mcp login.