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Cline is an open-source AI coding agent for VS Code (Apache-2.0, source). It plans, edits across files, and runs commands, with an approval step before each action.

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Setup

1

Open the Cline settings panel

Click the gear icon in the Cline sidebar.
2

Select the provider

Choose OpenAI Compatible as the API Provider.
3

Set the base URL and key

4

Set the model ID

Enter any model ID from the catalog — for example anthropic/claude-sonnet-4-6.

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Choosing a model

Cline is an agent, so the model needs tool calling. Pick a model the catalog marks with the tools capability. Cline tracks input, output, and cache tokens per task in its own UI. The same calls appear in Opper traces with cost attached.

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Troubleshooting

Check the key is an Opper key (they start with op-) and that you selected OpenAI Compatible, not OpenAI.
Copy the model ID exactly from the catalog, including the provider prefix.
The model likely doesn’t support tool calling well. Switch to a model the catalog marks with the tools capability.

Kilo Code

Same setup, different VS Code agent.

All integrations

Every app that runs on Opper.