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Each automation picks its own model and harness. You can switch providers without rebuilding your automations, and you can run on your own API keys or your ChatGPT subscription instead of the usage included in your plan.

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Choose a model

In the automation editor, click Choose model in the Agent instructions toolbar. Pick a provider, then a model from its list. Model lists are loaded from each provider’s current catalog. The provider decides at run time whether a model is available to your key.

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Choose a harness

The harness is the agent program that runs the model in the sandbox. When you pick a model, Superlog switches to a compatible harness: Codex for OpenAI, the Claude Agent SDK (shown as Anthropic) for Anthropic, and OpenCode for the others. Click Harness to change it. All harnesses run unattended, without approval prompts.

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Where inference comes from

Superlog picks the inference source when each run starts:
  1. ChatGPT subscription, if one is connected and the automation uses the Codex harness.
  2. Your API key for the model’s provider. With several keys for one provider, the newest is used.
  3. Included usage from your plan, if neither of the above applies.
If the provider rejects your key, or your key cannot use the selected model, the run fails with a message that names the problem. It does not fall back to included usage.

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Add an API key

1

Open model settings

Go to Settings → Models.
2

Add the key

Under Add an API key, choose the provider, enter a label, and paste the key. Click Add key.
3

Check the result

Superlog checks the key against the provider’s model list before saving it. The key appears under API keys with its label, provider, last four characters, and status.
From then on, every automation that uses that provider runs on your key, and your provider bills the model usage. Keys are encrypted and never enter the automation sandbox. Click Replace to rotate a key, or Remove to delete it. A key that an automation is using cannot be removed.

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Connect a ChatGPT subscription

Automations that use the Codex harness can run on a ChatGPT plan. The subscription takes priority over any OpenAI API key, and usage counts against that plan’s Codex limits.
1

Start the sign-in

Go to Settings → Models, click Connect ChatGPT, then Connect subscription.
2

Enter the code

Superlog shows a one-time code. Click Continue to ChatGPT, sign in, and enter the code. If ChatGPT asks, enable device-code login in your ChatGPT security settings.
3

Finish

When the sign-in completes, the subscription appears with Codex harness only. Every automation in the workspace can use it.
If the subscription stops working, it shows Reconnect. Sign in again to restore it.
Superlog uses OpenAI’s official Codex client for sign-in and inference. Your tokens are encrypted, and each run’s sandbox holds only placeholders that are replaced at the network boundary. Anthropic subscription sign-in is not available.