> For the complete documentation index, see [llms.txt](https://docs.ionos.com/cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ionos.com/cloud/ai/ai-model-hub/how-tos/opencode-integration.md).

# OpenCode Integration

[<mark style="color:blue;">OpenCode</mark>](https://opencode.ai) is a terminal-based AI coding assistant. Because the AI Model Hub exposes an OpenAI-compatible API, you can connect OpenCode to it using the `@ai-sdk/openai-compatible` SDK package, no custom adapter required.

By the end of this guide, you will have OpenCode configured to use the AI Model Hub as its model provider.

## Prerequisites

* An <code class="expression">space.vars.ionos\_cloud</code> account with access to the AI Model Hub
* [<mark style="color:blue;">OpenCode</mark>](https://opencode.ai) installed on your system
* An <code class="expression">space.vars.ionos\_cloud</code> API authentication token

## Step 1: Get an Authentication Token

You need an authentication token to access the AI Model Hub. For instructions on how to generate a token in the Data Center Designer (DCD), see [<mark style="color:blue;">Generate authentication token</mark>](/cloud/set-up-ionos-cloud/management/identity-access-management/token-manager.md).

{% hint style="info" %} <code class="expression">space.vars.ionos\_cloud</code> tokens are JSON Web Tokens (JWTs) with an expiration date. If your token stops working, check the `exp` claim and generate a new token if needed.
{% endhint %}

## Step 2: Set the Token as an Environment Variable

Add the token to your shell profile so it persists across terminal sessions.

{% tabs %}
{% tab title="Zsh" %}
Add the following line to your `~/.zshrc` file:

```bash
export IONOS_API_TOKEN="your-token-here"
```

Then reload the profile:

```bash
source ~/.zshrc
```

{% endtab %}

{% tab title="Bash" %}
Add the following line to your `~/.bashrc` file:

```bash
export IONOS_API_TOKEN="your-token-here"
```

Then reload the profile:

```bash
source ~/.bashrc
```

{% endtab %}
{% endtabs %}

Replace `your-token-here` with the token you generated in Step 1.

To verify that the variable is set, run:

```bash
echo $IONOS_API_TOKEN
```

The terminal displays your token.

## Step 3: Select a Language Model

The AI Model Hub offers a variety of large language models. Choose the model that best fits your use case from the AI Model Hub [<mark style="color:blue;">Models</mark>](/cloud/ai/ai-model-hub/models.md).

{% hint style="info" %} <code class="expression">space.vars.ionos\_cloud</code> periodically adds and retires models. For the latest list, see the [<mark style="color:blue;">LLMs</mark>](/cloud/ai/ai-model-hub/models/llms.md) page or query the API directly:

```bash
curl -s -H "Authorization: Bearer $IONOS_API_TOKEN" \
  https://openai.inference.de-txl.ionos.com/v1/models | jq '.data[].id'
```

{% endhint %}

## Step 4: Configure OpenCode

Open your OpenCode configuration file at `~/.config/opencode/opencode.json` and add the `provider` block. If the file already exists with other configuration, merge the `provider` section into it.

### Single model

To configure a single model, use the following example:

```json
{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "ionos": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "IONOS Cloud AI Model Hub",
      "options": {
        "baseURL": "https://openai.inference.de-txl.ionos.com/v1",
        "apiKey": "{env:IONOS_API_TOKEN}"
      },
      "models": {
        "meta-llama/Meta-Llama-3.1-8B-Instruct": {
          "name": "Llama 3.1 8B Instruct",
          "limit": {
            "context": 131072,
            "output": 8192
          }
        }
      }
    }
  }
}
```

### All available models

To make all AI Model Hub models available in OpenCode, use the following configuration:

```json
{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "ionos": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "IONOS Cloud AI Model Hub",
      "options": {
        "baseURL": "https://openai.inference.de-txl.ionos.com/v1",
        "apiKey": "{env:IONOS_API_TOKEN}"
      },
      "models": {
        "Qwen/Qwen3.5-9B": {
          "name": "Qwen3.5 9B",
          "limit": {
            "context": 262144,
            "output": 8192
          }
        },
        "meta-llama/Meta-Llama-3.1-8B-Instruct": {
          "name": "Llama 3.1 8B Instruct",
          "limit": {
            "context": 131072,
            "output": 8192
          }
        },
        "mistralai/Mistral-Nemo-Instruct-2407": {
          "name": "Mistral Nemo 12B",
          "limit": {
            "context": 131072,
            "output": 8192
          }
        },
        "mistralai/Mistral-Small-24B-Instruct": {
          "name": "Mistral Small 24B",
          "limit": {
            "context": 131072,
            "output": 8192
          }
        },
        "Qwen/Qwen3.8-27B": {
          "name": "Qwen3.8 27B",
          "limit": {
            "context": 262144,
            "output": 8192
          }
        },
        "meta-llama/Llama-3.3-70B-Instruct": {
          "name": "Llama 3.3 70B Instruct",
          "limit": {
            "context": 131072,
            "output": 8192
          }
        },
        "Qwen/Qwen3-Coder-Next": {
          "name": "Qwen3 Coder Next 80B",
          "limit": {
            "context": 262144,
            "output": 8192
          }
        },
        "openai/gpt-oss-120b": {
          "name": "GPT-OSS 120B",
          "limit": {
            "context": 131072,
            "output": 8192
          }
        },
        "Qwen/Qwen3.5-397B-A17B": {
          "name": "Qwen3.5 397B A17B",
          "limit": {
            "context": 262144,
            "output": 8192
          }
        }
      }
    }
  }
}
```

### Configuration fields

| **Field**                   | **Description**                                                                                                        |
| --------------------------- | ---------------------------------------------------------------------------------------------------------------------- |
| `npm`                       | The AI SDK package. Use `@ai-sdk/openai-compatible` for any OpenAI-compatible API.                                     |
| `name`                      | Display name shown in the OpenCode model picker.                                                                       |
| `options.baseURL`           | The <code class="expression">space.vars.ionos\_cloud</code> OpenAI-compatible inference endpoint. Must end with `/v1`. |
| `options.apiKey`            | References the `IONOS_API_TOKEN` environment variable using `{env:...}` syntax.                                        |
| `models.<id>`               | The model identifier. Must match the exact ID from the AI Model Hub API.                                               |
| `models.<id>.name`          | A human-readable display name for the model.                                                                           |
| `models.<id>.limit.context` | Maximum input context window in tokens.                                                                                |
| `models.<id>.limit.output`  | Maximum output tokens the model can generate per response.                                                             |

## Step 5: Select a Model in OpenCode

1. Start OpenCode.
2. Use the `/models` command to open the model picker.
3. Your models appear under the **IONOS CLOUD AI Model Hub** provider.
4. Select the model you want to use.

## Troubleshooting

### Unauthorized or 401 error

* Verify your token is set: `echo $IONOS_API_TOKEN`
* Ensure the token has not expired: <code class="expression">space.vars.ionos\_cloud</code> JWTs have an `exp` claim.
* Generate a new token from the DCD if needed.

### Model not found

* Model identifiers are case-sensitive and must match exactly.
* Run the model list query in Step 3 to confirm the identifier.
* Review the [<mark style="color:blue;">Models</mark>](/cloud/ai/ai-model-hub/models/llms.md) for retirement notices.

### Connection timeout

* Confirm the base URL is `https://openai.inference.de-txl.ionos.com/v1`.
* The URL must end with `/v1`, not `/v1/chat/completions`.
* Verify that your network allows outbound `HTTPS` to `inference.de-txl.ionos.com`.

### Token not picked up by OpenCode

* Ensure your shell profile has been sourced: `source ~/.zshrc` or `source ~/.bashrc`.
* Restart OpenCode after changing environment variables.
* Verify the configuration uses `{env:IONOS_API_TOKEN}` and not a hardcoded token value.


---

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