Langflow + Token Harbor

Get a key from /dashboard/api-keys, then follow these steps.

Langflow → Settings → Model Providers → OpenAI Compatible:
  Base URL: https://tokenharbor.ai/v1
  API Key : YOUR_thk_KEY
  Model   : deepseek-v4.1-flash:free (or any Token Harbor model)
Save to discover models, enable the required models, then select them in a Language Model component.
Official reference: https://docs.langflow.org/bundles-openai-compatible

Replace YOUR_thk_KEY with your key. Fetch the available model IDs with an authenticated GET https://tokenharbor.ai/v1/models, or use tokenharbor models. The example free model uses your weekly allowance.

The Connect CLI prints the current values; application settings remain under your control. Send a short test message after saving.