Codex

Codex connects over HTTP with a bearer token, so no bridge and no Node.js setup is needed. The one thing that makes it different from Claude Code is where the token lives.

⚠️

Codex stores only the name of an environment variable — config.toml gets bearer_token_env_var, never the token itself. The variable has to exist in every shell that starts Codex. A bare export dies with the terminal, and the failure then looks like a rejected key rather than a missing variable.

Before you start

In AOV.ai Cart Drawer, open Settings → MCP connectors and add a connection. Choose the access level, then create a key. Copy the key when it is shown — it is shown once. See Authentication.

Add the server

Open a terminal on the machine where Codex is installed. This exports the token for this session, appends it to your shell profile so future terminals have it, and registers the server:

export AOV_CART_DRAWER_MCP_TOKEN="aov_mcp_YOUR_KEY"
echo 'export AOV_CART_DRAWER_MCP_TOKEN="aov_mcp_YOUR_KEY"' >> "${ZDOTDIR:-$HOME}/.zshrc"
 
codex mcp add aov-cart-drawer-your-store \
  --url https://aov-cart-drawer.firebaseapp.com/mcp \
  --bearer-token-env-var AOV_CART_DRAWER_MCP_TOKEN

Replace aov-cart-drawer-your-store with a name that includes your store, and aov_mcp_YOUR_KEY with your key.

The profile line targets ~/.zshrc. On bash, add the same export line to ~/.bashrc instead. Creating a new key means adding another line; the last export in the file wins.

If the server name already exists, remove the old entry first:

codex mcp remove aov-cart-drawer-your-store

Check it worked

Restart the Codex CLI, or the Codex IDE extension. In a chat, type /mcp. You should see aov-cart-drawer-your-store listed, with 12 or 13 tools for Read only, or 44 for Read and write.

Then ask something only your store can answer:

Is my cart drawer working right now?

If the server is listed but the question comes back with a refusal, the address is right and the token is not — see Troubleshooting.

Authentication
ChatGPT Desktop — same config file, different app
Troubleshooting

Claude Code Cursor

Codex

Before you start

Add the server

Check it worked

Related