Cline (VS Code)
Cline is a VS Code AI coding assistant (formerly Claude Dev) that supports the OpenAI-compatible protocol. TokOne plugs in directly as a model source.
Install
- Open VS Code and go to the Extensions panel (
Cmd/Ctrl + Shift + X). - Search "Cline" and click Install.
- A Cline icon appears in the left activity bar — click it to open the panel.
Configure
Open the Cline panel, click the gear icon at the top-right to open settings, then fill in:
| Field | Value |
|---|---|
| API Provider | OpenAI Compatible |
| Base URL | https://api.tokone.ai |
| API Key | your sk-xxx |
| Model ID | gpt-5.5 (or gpt-5.4) |
Click "Done" / "Save".
Model ID is case-sensitive
Cline passes the Model ID to the upstream API verbatim. gpt-5.5 is all lowercase; writing GPT-5.5 returns 404.
Verify
Back in the main panel, start a new task and type Describe the currently open project in one sentence. Cline should call the model and reply. The request also appears on the console "Usage" page.
FAQ
404 / model does not exist
The Model ID is wrong or has the wrong case. See Models; the common ones are gpt-5.5 and gpt-5.4.
401
- The API Key was copied with leading/trailing spaces — re-copy it.
- The key is disabled — check its status on the console "API Key" page.
No "OpenAI Compatible" in the API Provider dropdown
Older Cline versions use OpenAI + a "Use Custom Base URL" toggle. Upgrade to the latest version.
I want to use Claude models
Cline also supports the Anthropic provider — configure it with an Anthropic-group key from the TokOne console.
Next steps
- Models — model pricing and context
- API Endpoints — protocol notes