Codex CLI

OpenAI's Codex CLI supports custom model providers in ~/.codex/config.toml:

model = "default"
model_provider = "dodorouter"

[model_providers.dodorouter]
name = "DodoRouter"
base_url = "{base_url}/r/{router}/v1"
env_key = "DODO_API_KEY"

env_key names an environment variable Codex reads the API key from, so the key itself never has to live in the config file:

export DODO_API_KEY="sk-dodo-YOUR_KEY"
codex exec "Reply with exactly the single word: pong"

Verified: Codex CLI's default streaming mode renders the response live in the terminal (codex then pong), and DodoRouter's own logs confirm the underlying completion ("pong", finish_reason: "stop", HTTP 200, tokens billed correctly). An earlier version of DodoRouter's streamed Responses API didn't emit the item-lifecycle events Codex CLI's client strictly requires before a text delta, which caused it to log OutputTextDelta without active item and stall — that's now fixed. All four integrations in this section are clean.