# Codex CLI

[Codex CLI](https://github.com/openai/codex) is OpenAI's terminal-based AI coding assistant. Use this MCP server setup when you want to use Sonar tools from within a Codex CLI workflow.

If you prefer using a centrally managed MCP server, see the [#mcp-server-in-sonarqube-cloud](#mcp-server-in-sonarqube-cloud "mention") article below.

## Set up MCP for Codex CLI

### Environment variables

The following [#common-variables](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/environment-variables#common-variables "mention") are required. Note that `SONARQUBE_TOKEN` applies to stdio transport only. For HTTP, HTTPS, or the embedded SonarQube Cloud MCP server, use the `Authorization: Bearer <YourSonarQubeUserToken>` header instead.

* `SONARQUBE_TOKEN`: Your SonarQube user token (stdio transport).
* `SONARQUBE_ORG`: Your SonarQube Cloud organization key. Required for SonarQube Cloud only.
* `SONARQUBE_URL`: Your SonarQube Server or Community Build URL. Also required for SonarQube Cloud in the US region (`https://sonarqube.us`). Not needed for SonarQube Cloud in the EU region.

{% hint style="danger" %}
Your SonarQube token is a sensitive credential. Use environment variables to pass tokens rather than hardcoding them in configuration files. Never commit tokens to version control.
{% endhint %}

### Transport options

The SonarQube MCP Server supports three transport modes. Use [#stdio](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#stdio "mention") for local development and most use cases, [#https](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#https "mention") for production and team deployments, and [#http](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#http "mention") only on trusted internal networks.

#### Stdio (recommended)

Use [#stdio](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#stdio "mention") for local development or when you are the only user. It is also the transport used by [Agentic Analysis and Context Augmentation](#agentic-analysis-and-context-augmentation).

In your `~/.codex/config.toml` file, add the following configuration:

{% hint style="warning" %}
*User tokens* are required when setting up connected mode or an MCP Server between SonarQube (Server, Cloud) and SonarQube for IDE. Note that the binding will not function properly if *project tokens*, *global tokens*, or *scoped organization tokens* are used during the setup process.
{% endhint %}

{% hint style="success" %}
SONARQUBE\_URL should be defined as `https://sonarqube.us` each time you use a SonarQube Cloud configuration (SONARQUBE\_TOKEN + SONARQUBE\_ORG) and want to connect to US instance. See the [#common-variables](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/environment-variables#common-variables "mention") article which explains when to use these variables.
{% endhint %}

{% hint style="info" %}
This code sample configures the MCP server using [#stdio](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#stdio "mention") transport, where `SONARQUBE_TOKEN` is passed as an environment variable.

For [#http](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#http "mention"), [#https](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#https "mention"), or the [#mcp-server-in-sonarqube-cloud](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#mcp-server-in-sonarqube-cloud "mention"), the `SONARQUBE_TOKEN` header is deprecated. Pass the token using the `"Authorization": "Bearer <YourSonarQubeUserToken>"` header instead.
{% endhint %}

**Codex CLI with SonarQube Cloud**

```toml
[mcp_servers.sonarqube]
command = "docker"
args = ["run", "--rm", "-i", "--init", "--pull=always", "-e", "SONARQUBE_TOKEN", "-e", "SONARQUBE_ORG", "mcp/sonarqube"]
env = { "SONARQUBE_TOKEN" = "<YourSonarQubeUserToken>", "SONARQUBE_ORG" = "<YourOrganizationName>" }
```

**Codex CLI with SonarQube Server**

```toml
[mcp_servers.sonarqube]
command = "docker"
args = ["run", "--rm", "-i", "--init", "--pull=always", "-e", "SONARQUBE_TOKEN", "-e", "SONARQUBE_URL", "mcp/sonarqube"]
env = { "SONARQUBE_TOKEN" = "<YourSonarQubeUserToken>", "SONARQUBE_URL" = "<YourSonarQubeServerURL>" }
```

#### HTTPS

Use HTTPS when connecting Codex CLI to a shared MCP server deployed for a team. This requires an [HTTPS transport server](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#https) to be running and accessible.

Add the following to your `~/.codex/config.toml` file:

```toml
[mcp_servers.sonarqube]
url = "https://<YourSonarQubeMCPServer>:8443/mcp"
headers = { "Authorization" = "Bearer <YourSonarQubeUserToken>" }
```

#### HTTP

{% hint style="danger" %}
The HTTP [#transport-mode](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#transport-mode "mention") is not recommended. Use [#stdio](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#stdio "mention") for local development or [#https](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#https "mention") for multi-user production deployments.
{% endhint %}

Use HTTP only on a trusted internal network or for local testing. This requires an [HTTP transport server](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#http) to be running.

Add the following to your `~/.codex/config.toml` file:

```toml
[mcp_servers.sonarqube]
url = "http://<YourSonarQubeMCPServer>:8080/mcp"
headers = { "Authorization" = "Bearer <YourSonarQubeUserToken>" }
```

## Agentic Analysis and Context Augmentation

When using SonarQube Cloud's Agentic Analysis and Context Augmentation services, your `SONARQUBE_TOKEN` will allow your local MCP server configured for [#stdio](https://docs.sonarsource.com/sonarqube-mcp-server/build-and-configure/configure#stdio "mention") mode to authenticate to the SonarQube Cloud API. See the SonarQube Cloud pages [Agentic Analysis](https://app.gitbook.com/s/B4UT2GNiZKjtxFtcFAL7/analyzing-source-code/agentic-analysis "mention") and [Context Augmentation](https://app.gitbook.com/s/B4UT2GNiZKjtxFtcFAL7/analyzing-source-code/context-augmentation "mention") to get the correct configuration details.

## MCP Server in SonarQube Cloud

Use the embedded SonarQube Cloud MCP server to avoid running and maintaining your own MCP infrastructure while always using the current server version. The embedded server exposes a smaller, fixed subset of tools; for the available toolsets and configuration details, check SonarQube Cloud's [SonarQube MCP Server #MCP Server in SonarQube Cloud](https://app.gitbook.com/s/B4UT2GNiZKjtxFtcFAL7/ai-capabilities/sonarqube-mcp-server#mcp-server-in-sonarqube-cloud "mention") page.

## Use Sonar tools from Codex CLI

Once connected, Codex CLI can call SonarQube MCP tools on your behalf. See the [tools](https://docs.sonarsource.com/sonarqube-mcp-server/using/tools "mention") page for the full list of available tools.

{% hint style="info" %}
Concrete workflow examples for this IDE will be added after engineering review.
{% endhint %}