> ## Documentation Index
> Fetch the complete documentation index at: https://www.edenai.co/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Codex CLI

> Configure Codex CLI, OpenAI's open-source local coding agent, to use Eden AI for access to 500+ models behind a single API key.

export const TechArticleSchema = ({title, description, path, articleSection, about, proficiencyLevel = "Beginner", dependencies, keywords = [], datePublished, dateModified, image, inLanguage = "en"}) => {
  const baseUrl = "https://www.edenai.co/docs";
  const canonicalUrl = `${baseUrl}/${path}`.replace(/\/+$/, "");
  const ogParams = new URLSearchParams({
    division: articleSection || "",
    title: title || "",
    description: description || ""
  });
  const resolvedImage = image || `https://edenai.mintlify.app/_mintlify/api/og?${ogParams.toString()}`;
  const data = {
    "@context": "https://schema.org",
    "@type": "TechArticle",
    "@id": `${canonicalUrl}#techarticle`,
    mainEntityOfPage: {
      "@type": "WebPage",
      "@id": canonicalUrl
    },
    headline: title,
    name: title,
    description: description,
    url: canonicalUrl,
    inLanguage: inLanguage,
    isPartOf: {
      "@type": "WebSite",
      name: "Eden AI Documentation",
      url: baseUrl
    },
    author: [{
      "@type": "Organization",
      name: "Eden AI",
      url: "https://www.edenai.co/"
    }],
    publisher: {
      "@type": "Organization",
      name: "Eden AI",
      url: "https://www.edenai.co/",
      logo: {
        "@type": "ImageObject",
        url: "https://www.edenai.co/assets/logo.png"
      }
    }
  };
  if (articleSection) data.articleSection = articleSection;
  if (about) data.about = {
    "@type": "Thing",
    name: about
  };
  if (proficiencyLevel) data.proficiencyLevel = proficiencyLevel;
  if (dependencies) data.dependencies = dependencies;
  if (keywords && keywords.length) data.keywords = keywords;
  if (datePublished) data.datePublished = datePublished;
  if (dateModified) data.dateModified = dateModified;
  data.image = Array.isArray(resolvedImage) ? resolvedImage : [resolvedImage];
  const json = JSON.stringify(data);
  const schemaId = `techarticle-${canonicalUrl}`;
  React.useEffect(() => {
    if (typeof document === "undefined") return;
    document.querySelectorAll(`script[data-schema-id="${schemaId}"]`).forEach(n => n.remove());
    const script = document.createElement("script");
    script.type = "application/ld+json";
    script.dataset.schemaId = schemaId;
    script.textContent = json;
    document.head.appendChild(script);
    return () => script.remove();
  }, [json, schemaId]);
  return null;
};

<TechArticleSchema title={"Codex CLI"} description={"Configure Codex CLI, OpenAI's open-source local coding agent, to use Eden AI for access to 500+ models behind a single API key."} path="v3/integrations/codex-cli" articleSection="Coding Agents" about={"AI Coding Assistants"} proficiencyLevel="Intermediate" keywords={["Eden AI", "AI API", "Codex"]} datePublished="2026-05-06T00:00:00Z" dateModified="2026-05-07T00:00:00Z" />

Configure [Codex CLI](https://github.com/openai/codex), OpenAI's open-source local coding agent, to use Eden AI for access to 500+ models behind a single API key.

## Overview

Codex CLI runs in your terminal and edits code in your project. Pointing it at Eden AI gives you:

* **500+ models**: switch between Codex variants, Claude, Gemini, and more without reinstalling
* **One API key**: unified billing and monitoring across providers
* **Provider failover**: keep working when an upstream provider has an incident

## Prerequisites

* Codex CLI installed ([install instructions](https://github.com/openai/codex))
* Eden AI API key from [app.edenai.run](https://app.edenai.run) → **API Keys**

## Setup

### 1. Configure `~/.codex/config.toml`

Codex CLI reads its provider settings from `~/.codex/config.toml`. Add an `edenai` provider and point Codex at it:

<CodeGroup>
  ```toml ~/.codex/config.toml theme={null}
  model_provider = "edenai"
  model = "openai/gpt-5.1-codex"
  model_reasoning_effort = "high"

  [model_providers.edenai]
  name = "Eden AI"
  base_url = "https://api.edenai.run/v3"
  env_key = "EDENAI_API_KEY"
  wire_api = "responses"
  ```
</CodeGroup>

### 2. Export your API key

<CodeGroup>
  ```bash bash / zsh theme={null}
  export EDENAI_API_KEY="YOUR_EDEN_AI_API_KEY"
  ```

  ```powershell PowerShell theme={null}
  $env:EDENAI_API_KEY = "YOUR_EDEN_AI_API_KEY"
  ```
</CodeGroup>

To make it permanent, add the `export` line to `~/.bashrc` or `~/.zshrc` and reload your shell.

### 3. Launch Codex

```bash theme={null}
codex
```

Codex now sends requests to Eden AI using the model you set in `config.toml`.

## Switching models

Eden AI uses the `provider/model` format. Update the `model` field in `~/.codex/config.toml` (or pass `--model` on the command line) to switch:

<CodeGroup>
  ```toml Codex variants theme={null}
  model = "openai/gpt-5.1-codex"        # default
  model = "openai/gpt-5.1-codex-mini"   # cheaper, faster
  model = "openai/gpt-5.1-codex-max"    # largest context
  model = "openai/gpt-5.3-codex"        # latest
  ```

  ```toml Other providers theme={null}
  model = "anthropic/claude-sonnet-4-5"
  model = "google/gemini-2.5-pro"
  model = "openai/gpt-4o"
  ```
</CodeGroup>

Browse the full catalog via [List Models](/v3/llms/listing-models) or `GET https://api.edenai.run/v3/models`.

## Troubleshooting

### Authentication errors

Verify the API key is loaded in your shell and that it has LLM access:

```bash theme={null}
echo $EDENAI_API_KEY

curl -X POST https://api.edenai.run/v3/chat/completions \
  -H "Authorization: Bearer $EDENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "openai/gpt-5.1-codex", "messages": [{"role": "user", "content": "ping"}]}'
```

### Model not found

Use the full `provider/model` string (e.g. `openai/gpt-5.1-codex`, not `gpt-5.1-codex`). Confirm the ID is in the catalog returned by `GET /v3/models`.

### Connection issues

Confirm `base_url` is exactly `https://api.edenai.run/v3` — Codex appends `/chat/completions` itself. Check Eden AI status at [app-edenai.instatus.com](https://app-edenai.instatus.com).

## Next Steps

* [Claude Code](./claude-code) — Anthropic's official CLI on Eden AI
* [OpenCode](./opencode) — terminal coding agent with auto-generated config
* [Chat Completions](/v3/llms/chat-completions) — full reference for the underlying endpoint