Codex

Add WaveAPI as a model provider in Codex’s config.toml to use GPT, Claude, Gemini, DeepSeek, GLM, Kimi, Qwen and other text models in Codex. Codex CLI and the Codex desktop app read the same configuration.

Prerequisites

Codex CLI installed (codex --version prints a version) or the Codex desktop app. See the Codex docs for installation.
An API key created in the console.

Configure

1. Set the API key

Codex reads the key from the WAVEAPI_API_KEY environment variable.

read -s "WAVEAPI_API_KEY?WaveAPI API Key: "; echo
echo "export WAVEAPI_API_KEY=\"$WAVEAPI_API_KEY\"" >> ~/.zshrc
launchctl setenv WAVEAPI_API_KEY "$WAVEAPI_API_KEY"

read -rs -p "WaveAPI API Key: " WAVEAPI_API_KEY; echo
echo "export WAVEAPI_API_KEY=\"$WAVEAPI_API_KEY\"" >> ~/.bashrc

$key = Read-Host "WaveAPI API Key" -AsSecureString
[Environment]::SetEnvironmentVariable("WAVEAPI_API_KEY", [System.Net.NetworkCredential]::new("", $key).Password, "User")

launchctl setenv makes the variable visible to the Codex desktop app; restart the app afterwards. On Windows, open a new terminal after setting it.

2. Edit config.toml

Edit ~/.codex/config.toml (Windows: %USERPROFILE%\.codex\config.toml):

model = "gpt-5.4"
model_provider = "waveapi"

[model_providers.waveapi]
name = "WaveAPI"
base_url = "https://api.qingbo.ai/v1"
env_key = "WAVEAPI_API_KEY"
wire_api = "responses"

Field	Value
`model`	Default model ID
`model_provider`	`waveapi`, matching `[model_providers.waveapi]` below
`base_url`	`https://api.qingbo.ai/v1`
`env_key`	Name of the environment variable holding the key
`wire_api`	`responses`

model and model_provider must be at the top of the file, before any [...] table. Inside a table they become fields of that table, and Codex keeps asking you to sign in to ChatGPT.

Verify

codex exec "Introduce yourself in one sentence."

A reply means the configuration works.

Available models

Every text model except deepseek-v3.1-terminus can be used in Codex. Model IDs and prices are in the Text models overview. Switch models with /model in Codex, or pick one at launch:

codex -m claude-sonnet-5

Generate images and videos

Codex can also generate images, videos and audio through WaveAPI’s MCP tools; see MCP & Skill.

Common errors

Symptom	Cause	Fix
Asks you to sign in to ChatGPT on start	`model_provider` did not take effect	Make sure `model_provider = "waveapi"` is at the top of the file, before any `[...]` table
Says the `WAVEAPI_API_KEY` environment variable is missing	The Codex process cannot see the variable	Terminal: open a new terminal or run `source ~/.zshrc`. Desktop app: run `launchctl setenv`, then restart the app
`401`	The API key is invalid or disabled	Check the key in the console
`400` saying the model is unavailable	The model does not support the Responses endpoint	Use any model other than `deepseek-v3.1-terminus`

Developer Tools

Agent Tools

Prerequisites

Configure

1. Set the API key

2. Edit config.toml

Verify

Available models

Generate images and videos

Common errors