Skip to main content
Connect Cline to CMX so requests from the Cline VS Code extension pass through the local gateway. CMX compresses eligible context in the background, reducing your provider token usage across longer coding sessions, without requiring any changes to how you use Cline.
Prerequisites: CMX must be installed and signed in on your device. Cline must already be installed in VS Code with a configured model provider. CMX does not replace your provider account; you continue managing your provider sign-in through Cline as usual.
1

Set Up CMX

Run the guided setup command to sign in, start the local gateway, and detect your coding agents:
Follow the browser sign-in prompt. Once setup completes, the CMX gateway starts at 127.0.0.1:17322 and is ready to accept connections.
2

Connect Cline

Open the CMX terminal UI and connect Cline to your provider:
  1. Navigate to CONFIG → Cline.
  2. Refresh the provider list to make sure your configured provider appears.
  3. Select the provider you use in Cline.
  4. Click Connect.
  5. Reload the VS Code window so Cline picks up the new routing through CMX.
Cline will now send all requests through the CMX gateway instead of directly to your provider.
3

Verify the Connection

Confirm that Cline is routing through CMX correctly:
Send a request from Cline as you normally would. Then check CMX for activity:
New requests should appear in the stats output. If you see activity, the connection is working.
Short conversations may show little or no compression. Savings grow with longer sessions as eligible older context accumulates. Compare stats across a full coding session to get a representative picture.

​
Troubleshooting

If requests from Cline are not appearing in cmx stats after a coding session:
  1. Reload the VS Code window so the new routing takes effect.
  2. Check the selected connection by opening CONFIG → Cline in CMX and confirming the correct provider is connected.
  3. Run the diagnostics command:
For more detailed guidance, see the troubleshooting guide. If the issue persists, contact support with your CMX version, OS, and a description of what happened. Using a tool that is not listed under Providers? See Connect Any OpenAI or Anthropic Agent to CMX for instructions on connecting other tools via a custom base URL, or suggest a provider for us to integrate next.
Last modified on September 22, 2026