# Use Codex CLI with Bridge

URL: https://bridge.wekoya.tech/guides/codex-cli
Updated: 2026-11-08

**In short:** Add Bridge as a model provider in `~/.codex/config.toml` with `wire_api = "responses"`, put your Bridge key in `WEKOYA_API_KEY`, and run `codex`. Codex then works with Claude, Gemini, GPT or any Bridge model that supports tool calling, billed in naira from your balance.

## Set it up

1. [Create a free account](https://bridge.wekoya.tech/sign-up) with your email.
2. Open Billing in the console and top up your naira balance by bank transfer to your own account number.
3. Create a key under API keys. It starts with `wk_live_` and is shown once, so keep it somewhere safe.
4. Add this to `~/.codex/config.toml` (Codex ignores providers in a project's own config file):

```toml
model = "claude-sonnet-5-5"
model_provider = "bridge"

[model_providers.bridge]
name = "Bridge by Wekoya"
base_url = "https://wekoya-api.wekoya.tech/v1"
env_key = "WEKOYA_API_KEY"
wire_api = "responses"
```

```bash
export WEKOYA_API_KEY=wk_live_...
codex
```

## What to know

- Codex only speaks OpenAI's Responses API (its own [config reference](https://learn.chatgpt.com/docs/config-file/config-reference) says so), which Bridge serves at `/v1/responses`. See [Responses API and Codex](https://bridge.wekoya.tech/docs/responses).
- Pick a model with tool calling ("Tool calling: Yes" on its page); Codex edits files and runs commands through tools.
- Codex's built-in web search is not available through Bridge; Codex works without it.
- Change models by editing `model`, or for one run with `codex -m gemini-3.5-flash-lite`.

[Create a free account](https://bridge.wekoya.tech/sign-up)

## Common questions

**Can Codex use Claude models?**

Yes, through Bridge. Set model to a Claude ID such as claude-sonnet-5-5 with Bridge as the provider.

**Why does Codex need the Responses API?**

Current Codex releases only accept wire_api = "responses" for custom providers. Bridge answers the Responses API, so Codex works with it.

## Read next

- [Responses API and Codex docs](https://bridge.wekoya.tech/docs/responses)
- [Use a coding agent](https://bridge.wekoya.tech/docs/agent)